./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-esbmc-regression/Double_div.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e4cbd3-a17f-499d-9385-df3f58e1e165/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e4cbd3-a17f-499d-9385-df3f58e1e165/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e4cbd3-a17f-499d-9385-df3f58e1e165/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e4cbd3-a17f-499d-9385-df3f58e1e165/bin/uautomizer-j4sWxH34Be/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-esbmc-regression/Double_div.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e4cbd3-a17f-499d-9385-df3f58e1e165/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e4cbd3-a17f-499d-9385-df3f58e1e165/bin/uautomizer-j4sWxH34Be --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 2f4e199f6665b6821475945a72290dab8d4d620db3a5150842d6f2ec9f4c430d ........................................................................................................................................................................................................................................ 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_03e4cbd3-a17f-499d-9385-df3f58e1e165/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e4cbd3-a17f-499d-9385-df3f58e1e165/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e4cbd3-a17f-499d-9385-df3f58e1e165/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e4cbd3-a17f-499d-9385-df3f58e1e165/bin/uautomizer-j4sWxH34Be/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-esbmc-regression/Double_div.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e4cbd3-a17f-499d-9385-df3f58e1e165/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e4cbd3-a17f-499d-9385-df3f58e1e165/bin/uautomizer-j4sWxH34Be --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 2f4e199f6665b6821475945a72290dab8d4d620db3a5150842d6f2ec9f4c430d ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e4cbd3-a17f-499d-9385-df3f58e1e165/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 19:19:16,232 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 19:19:16,234 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 19:19:16,270 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 19:19:16,271 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 19:19:16,273 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 19:19:16,275 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 19:19:16,278 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 19:19:16,280 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 19:19:16,282 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 19:19:16,283 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 19:19:16,285 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 19:19:16,286 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 19:19:16,287 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 19:19:16,290 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 19:19:16,292 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 19:19:16,293 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 19:19:16,295 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 19:19:16,298 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 19:19:16,301 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 19:19:16,316 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 19:19:16,323 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 19:19:16,325 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 19:19:16,326 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 19:19:16,331 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 19:19:16,331 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 19:19:16,332 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 19:19:16,333 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 19:19:16,334 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 19:19:16,335 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 19:19:16,336 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 19:19:16,337 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 19:19:16,338 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 19:19:16,340 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 19:19:16,341 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 19:19:16,342 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 19:19:16,343 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 19:19:16,343 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 19:19:16,344 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 19:19:16,359 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 19:19:16,360 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 19:19:16,362 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e4cbd3-a17f-499d-9385-df3f58e1e165/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-21 19:19:16,389 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 19:19:16,389 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 19:19:16,390 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 19:19:16,390 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 19:19:16,392 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 19:19:16,392 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 19:19:16,392 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 19:19:16,392 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 19:19:16,393 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 19:19:16,393 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 19:19:16,393 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 19:19:16,394 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 19:19:16,394 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-21 19:19:16,394 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 19:19:16,394 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-21 19:19:16,395 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 19:19:16,395 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 19:19:16,395 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 19:19:16,395 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-21 19:19:16,396 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 19:19:16,396 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 19:19:16,396 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 19:19:16,397 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:19:16,397 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 19:19:16,397 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 19:19:16,397 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-21 19:19:16,398 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 19:19:16,398 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-21 19:19:16,398 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-21 19:19:16,398 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-21 19:19:16,399 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-21 19:19:16,399 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 19:19:16,399 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_03e4cbd3-a17f-499d-9385-df3f58e1e165/bin/uautomizer-j4sWxH34Be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e4cbd3-a17f-499d-9385-df3f58e1e165/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2f4e199f6665b6821475945a72290dab8d4d620db3a5150842d6f2ec9f4c430d [2021-10-21 19:19:16,659 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 19:19:16,686 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 19:19:16,689 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 19:19:16,691 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 19:19:16,692 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 19:19:16,693 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e4cbd3-a17f-499d-9385-df3f58e1e165/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/floats-esbmc-regression/Double_div.i [2021-10-21 19:19:16,775 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e4cbd3-a17f-499d-9385-df3f58e1e165/bin/uautomizer-j4sWxH34Be/data/31bb9a78a/8962719b46b64dfeaeeafd9b5897301f/FLAGfbb9ac9be [2021-10-21 19:19:17,307 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 19:19:17,307 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e4cbd3-a17f-499d-9385-df3f58e1e165/sv-benchmarks/c/floats-esbmc-regression/Double_div.i [2021-10-21 19:19:17,320 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e4cbd3-a17f-499d-9385-df3f58e1e165/bin/uautomizer-j4sWxH34Be/data/31bb9a78a/8962719b46b64dfeaeeafd9b5897301f/FLAGfbb9ac9be [2021-10-21 19:19:17,699 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e4cbd3-a17f-499d-9385-df3f58e1e165/bin/uautomizer-j4sWxH34Be/data/31bb9a78a/8962719b46b64dfeaeeafd9b5897301f [2021-10-21 19:19:17,702 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 19:19:17,704 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 19:19:17,705 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 19:19:17,705 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 19:19:17,717 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 19:19:17,718 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:19:17" (1/1) ... [2021-10-21 19:19:17,719 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@287e03ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:19:17, skipping insertion in model container [2021-10-21 19:19:17,719 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:19:17" (1/1) ... [2021-10-21 19:19:17,729 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 19:19:17,749 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 19:19:17,899 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_03e4cbd3-a17f-499d-9385-df3f58e1e165/sv-benchmarks/c/floats-esbmc-regression/Double_div.i[804,817] [2021-10-21 19:19:17,912 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:19:17,922 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 19:19:17,937 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_03e4cbd3-a17f-499d-9385-df3f58e1e165/sv-benchmarks/c/floats-esbmc-regression/Double_div.i[804,817] [2021-10-21 19:19:17,940 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:19:17,954 INFO L208 MainTranslator]: Completed translation [2021-10-21 19:19:17,955 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:19:17 WrapperNode [2021-10-21 19:19:17,955 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 19:19:17,957 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 19:19:17,957 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 19:19:17,957 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 19:19:17,966 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:19:17" (1/1) ... [2021-10-21 19:19:17,974 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:19:17" (1/1) ... [2021-10-21 19:19:17,992 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 19:19:17,993 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 19:19:17,993 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 19:19:17,993 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 19:19:18,003 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:19:17" (1/1) ... [2021-10-21 19:19:18,003 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:19:17" (1/1) ... [2021-10-21 19:19:18,005 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:19:17" (1/1) ... [2021-10-21 19:19:18,005 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:19:17" (1/1) ... [2021-10-21 19:19:18,010 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:19:17" (1/1) ... [2021-10-21 19:19:18,014 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:19:17" (1/1) ... [2021-10-21 19:19:18,015 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:19:17" (1/1) ... [2021-10-21 19:19:18,017 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 19:19:18,018 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 19:19:18,019 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 19:19:18,019 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 19:19:18,020 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:19:17" (1/1) ... [2021-10-21 19:19:18,029 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:19:18,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e4cbd3-a17f-499d-9385-df3f58e1e165/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:19:18,059 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e4cbd3-a17f-499d-9385-df3f58e1e165/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 19:19:18,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e4cbd3-a17f-499d-9385-df3f58e1e165/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 19:19:18,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 19:19:18,120 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 19:19:18,120 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 19:19:18,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 19:19:18,297 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 19:19:18,298 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-21 19:19:18,300 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:19:18 BoogieIcfgContainer [2021-10-21 19:19:18,300 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 19:19:18,303 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 19:19:18,303 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 19:19:18,307 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 19:19:18,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 07:19:17" (1/3) ... [2021-10-21 19:19:18,308 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a87ab49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:19:18, skipping insertion in model container [2021-10-21 19:19:18,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:19:17" (2/3) ... [2021-10-21 19:19:18,309 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a87ab49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:19:18, skipping insertion in model container [2021-10-21 19:19:18,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:19:18" (3/3) ... [2021-10-21 19:19:18,311 INFO L111 eAbstractionObserver]: Analyzing ICFG Double_div.i [2021-10-21 19:19:18,318 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 19:19:18,318 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-21 19:19:18,379 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 19:19:18,388 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 [2021-10-21 19:19:18,388 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-21 19:19:18,405 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 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) [2021-10-21 19:19:18,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-21 19:19:18,411 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:19:18,412 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-21 19:19:18,413 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:19:18,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:19:18,420 INFO L82 PathProgramCache]: Analyzing trace with hash 889633835, now seen corresponding path program 1 times [2021-10-21 19:19:18,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:19:18,432 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630557087] [2021-10-21 19:19:18,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:19:18,434 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:19:18,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:19:18,557 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:19:18,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:19:18,599 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:19:18,601 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-21 19:19:18,602 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:19:18,605 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-21 19:19:18,612 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 19:19:18,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 07:19:18 BoogieIcfgContainer [2021-10-21 19:19:18,631 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 19:19:18,659 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 19:19:18,660 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 19:19:18,660 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 19:19:18,661 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:19:18" (3/4) ... [2021-10-21 19:19:18,665 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-21 19:19:18,665 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 19:19:18,669 INFO L168 Benchmark]: Toolchain (without parser) took 962.39 ms. Allocated memory was 94.4 MB in the beginning and 123.7 MB in the end (delta: 29.4 MB). Free memory was 68.0 MB in the beginning and 101.3 MB in the end (delta: -33.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:19:18,670 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 94.4 MB. Free memory was 64.7 MB in the beginning and 64.6 MB in the end (delta: 53.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:19:18,672 INFO L168 Benchmark]: CACSL2BoogieTranslator took 250.58 ms. Allocated memory is still 94.4 MB. Free memory was 67.8 MB in the beginning and 58.3 MB in the end (delta: 9.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-21 19:19:18,673 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.40 ms. Allocated memory is still 94.4 MB. Free memory was 58.3 MB in the beginning and 57.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:19:18,675 INFO L168 Benchmark]: Boogie Preprocessor took 25.00 ms. Allocated memory is still 94.4 MB. Free memory was 57.0 MB in the beginning and 56.0 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:19:18,676 INFO L168 Benchmark]: RCFGBuilder took 281.89 ms. Allocated memory is still 94.4 MB. Free memory was 55.8 MB in the beginning and 47.4 MB in the end (delta: 8.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-21 19:19:18,684 INFO L168 Benchmark]: TraceAbstraction took 328.78 ms. Allocated memory is still 94.4 MB. Free memory was 46.8 MB in the beginning and 34.4 MB in the end (delta: 12.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-21 19:19:18,686 INFO L168 Benchmark]: Witness Printer took 5.62 ms. Allocated memory is still 123.7 MB. Free memory is still 101.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:19:18,694 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 94.4 MB. Free memory was 64.7 MB in the beginning and 64.6 MB in the end (delta: 53.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 250.58 ms. Allocated memory is still 94.4 MB. Free memory was 67.8 MB in the beginning and 58.3 MB in the end (delta: 9.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 35.40 ms. Allocated memory is still 94.4 MB. Free memory was 58.3 MB in the beginning and 57.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.00 ms. Allocated memory is still 94.4 MB. Free memory was 57.0 MB in the beginning and 56.0 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 281.89 ms. Allocated memory is still 94.4 MB. Free memory was 55.8 MB in the beginning and 47.4 MB in the end (delta: 8.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 328.78 ms. Allocated memory is still 94.4 MB. Free memory was 46.8 MB in the beginning and 34.4 MB in the end (delta: 12.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Witness Printer took 5.62 ms. Allocated memory is still 123.7 MB. Free memory is still 101.3 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, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 13]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 29, overapproximation of someBinaryArithmeticDOUBLEoperation at line 21. Possible FailurePath: [L20] double x = 1.0; [L21] double x1 = x/2.5; [L23] COND FALSE !(x1 != x) [L13] COND TRUE !(cond) [L13] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 233.4ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 10.4ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 12.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 7.0ms SsaConstructionTime, 41.2ms SatisfiabilityAnalysisTime, 0.0ms InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 [2021-10-21 19:19:18,762 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e4cbd3-a17f-499d-9385-df3f58e1e165/bin/uautomizer-j4sWxH34Be/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-e943c26 [2021-10-21 19:19:21,491 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 19:19:21,495 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 19:19:21,564 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 19:19:21,565 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 19:19:21,570 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 19:19:21,574 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 19:19:21,582 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 19:19:21,586 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 19:19:21,592 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 19:19:21,594 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 19:19:21,596 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 19:19:21,597 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 19:19:21,600 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 19:19:21,603 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 19:19:21,605 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 19:19:21,608 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 19:19:21,609 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 19:19:21,614 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 19:19:21,624 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 19:19:21,627 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 19:19:21,629 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 19:19:21,632 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 19:19:21,635 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 19:19:21,645 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 19:19:21,646 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 19:19:21,647 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 19:19:21,649 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 19:19:21,650 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 19:19:21,651 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 19:19:21,652 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 19:19:21,653 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 19:19:21,656 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 19:19:21,657 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 19:19:21,666 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 19:19:21,667 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 19:19:21,668 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 19:19:21,668 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 19:19:21,669 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 19:19:21,671 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 19:19:21,672 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 19:19:21,678 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e4cbd3-a17f-499d-9385-df3f58e1e165/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-10-21 19:19:21,732 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 19:19:21,733 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 19:19:21,733 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 19:19:21,734 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 19:19:21,736 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 19:19:21,737 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 19:19:21,737 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 19:19:21,737 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 19:19:21,737 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 19:19:21,738 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 19:19:21,739 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 19:19:21,740 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-21 19:19:21,740 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 19:19:21,740 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-21 19:19:21,741 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-21 19:19:21,741 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-21 19:19:21,741 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 19:19:21,741 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 19:19:21,742 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 19:19:21,742 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-21 19:19:21,742 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 19:19:21,742 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 19:19:21,743 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 19:19:21,743 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:19:21,743 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 19:19:21,744 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 19:19:21,744 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-21 19:19:21,744 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-21 19:19:21,745 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-21 19:19:21,745 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-21 19:19:21,745 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-21 19:19:21,745 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-21 19:19:21,746 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 19:19:21,746 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-21 19:19:21,747 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_03e4cbd3-a17f-499d-9385-df3f58e1e165/bin/uautomizer-j4sWxH34Be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e4cbd3-a17f-499d-9385-df3f58e1e165/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2f4e199f6665b6821475945a72290dab8d4d620db3a5150842d6f2ec9f4c430d [2021-10-21 19:19:22,176 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 19:19:22,199 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 19:19:22,202 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 19:19:22,203 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 19:19:22,204 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 19:19:22,205 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e4cbd3-a17f-499d-9385-df3f58e1e165/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/floats-esbmc-regression/Double_div.i [2021-10-21 19:19:22,290 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e4cbd3-a17f-499d-9385-df3f58e1e165/bin/uautomizer-j4sWxH34Be/data/a53453bcf/dfa902447c8641d48720283536f63cad/FLAG178354c9b [2021-10-21 19:19:22,907 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 19:19:22,908 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e4cbd3-a17f-499d-9385-df3f58e1e165/sv-benchmarks/c/floats-esbmc-regression/Double_div.i [2021-10-21 19:19:22,915 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e4cbd3-a17f-499d-9385-df3f58e1e165/bin/uautomizer-j4sWxH34Be/data/a53453bcf/dfa902447c8641d48720283536f63cad/FLAG178354c9b [2021-10-21 19:19:23,277 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e4cbd3-a17f-499d-9385-df3f58e1e165/bin/uautomizer-j4sWxH34Be/data/a53453bcf/dfa902447c8641d48720283536f63cad [2021-10-21 19:19:23,283 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 19:19:23,286 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 19:19:23,291 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 19:19:23,291 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 19:19:23,296 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 19:19:23,297 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:19:23" (1/1) ... [2021-10-21 19:19:23,299 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@315fdb25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:19:23, skipping insertion in model container [2021-10-21 19:19:23,300 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:19:23" (1/1) ... [2021-10-21 19:19:23,312 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 19:19:23,329 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 19:19:23,483 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_03e4cbd3-a17f-499d-9385-df3f58e1e165/sv-benchmarks/c/floats-esbmc-regression/Double_div.i[804,817] [2021-10-21 19:19:23,495 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:19:23,512 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 19:19:23,528 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_03e4cbd3-a17f-499d-9385-df3f58e1e165/sv-benchmarks/c/floats-esbmc-regression/Double_div.i[804,817] [2021-10-21 19:19:23,531 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:19:23,575 INFO L208 MainTranslator]: Completed translation [2021-10-21 19:19:23,576 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:19:23 WrapperNode [2021-10-21 19:19:23,576 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 19:19:23,577 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 19:19:23,578 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 19:19:23,578 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 19:19:23,596 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:19:23" (1/1) ... [2021-10-21 19:19:23,611 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:19:23" (1/1) ... [2021-10-21 19:19:23,634 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 19:19:23,636 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 19:19:23,636 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 19:19:23,636 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 19:19:23,646 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:19:23" (1/1) ... [2021-10-21 19:19:23,646 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:19:23" (1/1) ... [2021-10-21 19:19:23,650 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:19:23" (1/1) ... [2021-10-21 19:19:23,651 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:19:23" (1/1) ... [2021-10-21 19:19:23,658 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:19:23" (1/1) ... [2021-10-21 19:19:23,678 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:19:23" (1/1) ... [2021-10-21 19:19:23,680 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:19:23" (1/1) ... [2021-10-21 19:19:23,683 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 19:19:23,684 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 19:19:23,684 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 19:19:23,684 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 19:19:23,685 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:19:23" (1/1) ... [2021-10-21 19:19:23,696 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:19:23,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e4cbd3-a17f-499d-9385-df3f58e1e165/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:19:23,740 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e4cbd3-a17f-499d-9385-df3f58e1e165/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 19:19:23,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e4cbd3-a17f-499d-9385-df3f58e1e165/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 19:19:23,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-21 19:19:23,800 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 19:19:23,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 19:19:23,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 19:19:27,279 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 19:19:27,280 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-21 19:19:27,282 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:19:27 BoogieIcfgContainer [2021-10-21 19:19:27,282 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 19:19:27,284 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 19:19:27,285 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 19:19:27,288 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 19:19:27,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 07:19:23" (1/3) ... [2021-10-21 19:19:27,289 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26ff259b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:19:27, skipping insertion in model container [2021-10-21 19:19:27,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:19:23" (2/3) ... [2021-10-21 19:19:27,290 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26ff259b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:19:27, skipping insertion in model container [2021-10-21 19:19:27,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:19:27" (3/3) ... [2021-10-21 19:19:27,292 INFO L111 eAbstractionObserver]: Analyzing ICFG Double_div.i [2021-10-21 19:19:27,299 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 19:19:27,299 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-21 19:19:27,372 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 19:19:27,380 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 [2021-10-21 19:19:27,380 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-21 19:19:27,394 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 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) [2021-10-21 19:19:27,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-21 19:19:27,400 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:19:27,401 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-21 19:19:27,402 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:19:27,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:19:27,409 INFO L82 PathProgramCache]: Analyzing trace with hash 889633835, now seen corresponding path program 1 times [2021-10-21 19:19:27,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:19:27,432 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1119412632] [2021-10-21 19:19:27,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:19:27,434 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:19:27,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e4cbd3-a17f-499d-9385-df3f58e1e165/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:19:27,435 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e4cbd3-a17f-499d-9385-df3f58e1e165/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:19:27,437 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e4cbd3-a17f-499d-9385-df3f58e1e165/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-21 19:19:27,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:19:27,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-21 19:19:27,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:19:34,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:19:34,010 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:19:36,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:19:36,253 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:19:36,253 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1119412632] [2021-10-21 19:19:36,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1119412632] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:19:36,254 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:19:36,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-21 19:19:36,256 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639752207] [2021-10-21 19:19:36,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 19:19:36,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:19:36,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 19:19:36,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=11, Unknown=1, NotChecked=0, Total=20 [2021-10-21 19:19:36,287 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 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 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 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) [2021-10-21 19:19:43,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:19:43,783 INFO L93 Difference]: Finished difference Result 21 states and 27 transitions. [2021-10-21 19:19:43,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 19:19:43,786 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 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 6 [2021-10-21 19:19:43,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:19:43,794 INFO L225 Difference]: With dead ends: 21 [2021-10-21 19:19:43,795 INFO L226 Difference]: Without dead ends: 9 [2021-10-21 19:19:43,799 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 9616.4ms TimeCoverageRelationStatistics Valid=18, Invalid=23, Unknown=1, NotChecked=0, Total=42 [2021-10-21 19:19:43,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-10-21 19:19:43,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-10-21 19:19:43,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 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) [2021-10-21 19:19:43,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2021-10-21 19:19:43,837 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2021-10-21 19:19:43,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:19:43,837 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2021-10-21 19:19:43,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 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) [2021-10-21 19:19:43,838 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2021-10-21 19:19:43,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-21 19:19:43,838 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:19:43,839 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2021-10-21 19:19:43,853 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e4cbd3-a17f-499d-9385-df3f58e1e165/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-10-21 19:19:44,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e4cbd3-a17f-499d-9385-df3f58e1e165/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:19:44,040 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:19:44,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:19:44,041 INFO L82 PathProgramCache]: Analyzing trace with hash 292915403, now seen corresponding path program 1 times [2021-10-21 19:19:44,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:19:44,042 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1556421081] [2021-10-21 19:19:44,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:19:44,043 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:19:44,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e4cbd3-a17f-499d-9385-df3f58e1e165/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:19:44,044 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e4cbd3-a17f-499d-9385-df3f58e1e165/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:19:44,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e4cbd3-a17f-499d-9385-df3f58e1e165/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-21 19:19:44,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:19:44,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-21 19:19:44,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:19:49,866 WARN L860 $PredicateComparison]: unable to prove that (and (= c_ULTIMATE.start_main_~x1~0 (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-10-21 19:19:57,295 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2021-10-21 19:19:57,295 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:20:04,012 WARN L838 $PredicateComparison]: unable to prove that (not (fp.eq (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0))) c_ULTIMATE.start_main_~x1~0)) is different from false [2021-10-21 19:20:11,410 WARN L838 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) is different from false [2021-10-21 19:20:13,663 WARN L860 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) is different from true [2021-10-21 19:20:20,409 WARN L838 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1) .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) is different from false [2021-10-21 19:20:22,650 WARN L860 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1) .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) is different from true [2021-10-21 19:20:22,651 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2021-10-21 19:20:22,651 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:20:22,652 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1556421081] [2021-10-21 19:20:22,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1556421081] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-21 19:20:22,662 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:20:22,662 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-21 19:20:22,663 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033388692] [2021-10-21 19:20:22,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-21 19:20:22,666 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:20:22,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-21 19:20:22,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=20, Unknown=7, NotChecked=44, Total=90 [2021-10-21 19:20:22,671 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 10 states, 10 states have (on average 1.3) internal successors, (13), 9 states have internal predecessors, (13), 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) [2021-10-21 19:20:24,944 WARN L860 $PredicateComparison]: unable to prove that (and (not (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1) .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-10-21 19:20:27,207 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (and (not (let ((.cse0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0))) (= (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1) c_ULTIMATE.start_main_~x1~0) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-10-21 19:20:44,134 WARN L207 SmtUtils]: Spent 8.81 s on a formula simplification. DAG size of input: 15 DAG size of output: 12 [2021-10-21 19:20:47,666 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0)))) (and (= (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1.0) .cse0) .cse0) c_ULTIMATE.start_main_~x~0) (= c_currentRoundingMode roundNearestTiesToEven) (= c_ULTIMATE.start_main_~x1~0 (fp.div roundNearestTiesToEven c_ULTIMATE.start_main_~x~0 .cse0)))) is different from true [2021-10-21 19:20:50,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:20:50,424 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2021-10-21 19:20:50,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 19:20:50,425 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.3) internal successors, (13), 9 states have internal predecessors, (13), 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 8 [2021-10-21 19:20:50,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:20:50,426 INFO L225 Difference]: With dead ends: 14 [2021-10-21 19:20:50,426 INFO L226 Difference]: Without dead ends: 10 [2021-10-21 19:20:50,428 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 44601.3ms TimeCoverageRelationStatistics Valid=28, Invalid=31, Unknown=11, NotChecked=112, Total=182 [2021-10-21 19:20:50,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-10-21 19:20:50,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-10-21 19:20:50,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 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) [2021-10-21 19:20:50,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2021-10-21 19:20:50,432 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2021-10-21 19:20:50,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:20:50,433 INFO L470 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2021-10-21 19:20:50,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.3) internal successors, (13), 9 states have internal predecessors, (13), 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) [2021-10-21 19:20:50,433 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2021-10-21 19:20:50,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-21 19:20:50,434 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:20:50,434 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2021-10-21 19:20:50,453 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e4cbd3-a17f-499d-9385-df3f58e1e165/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-21 19:20:50,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e4cbd3-a17f-499d-9385-df3f58e1e165/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:20:50,638 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:20:50,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:20:50,639 INFO L82 PathProgramCache]: Analyzing trace with hash 492108272, now seen corresponding path program 2 times [2021-10-21 19:20:50,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:20:50,640 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [631294378] [2021-10-21 19:20:50,640 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 19:20:50,641 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:20:50,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e4cbd3-a17f-499d-9385-df3f58e1e165/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:20:50,645 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e4cbd3-a17f-499d-9385-df3f58e1e165/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:20:50,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e4cbd3-a17f-499d-9385-df3f58e1e165/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-21 19:20:51,597 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-21 19:20:51,598 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:20:51,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-21 19:20:51,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:20:55,725 WARN L860 $PredicateComparison]: unable to prove that (and (= c_ULTIMATE.start_main_~x1~0 (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-10-21 19:21:00,976 WARN L207 SmtUtils]: Spent 5.23 s on a formula simplification that was a NOOP. DAG size: 3 [2021-10-21 19:21:03,337 WARN L860 $PredicateComparison]: unable to prove that (and (= c_currentRoundingMode roundNearestTiesToEven) (= c_ULTIMATE.start_main_~x1~0 (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0) .cse0)))) is different from true [2021-10-21 19:21:12,367 WARN L207 SmtUtils]: Spent 5.76 s on a formula simplification that was a NOOP. DAG size: 3 [2021-10-21 19:21:14,725 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (and (= c_ULTIMATE.start_main_~x~0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0) .cse0)) (= (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x~0 .cse0) c_ULTIMATE.start_main_~x1~0) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-10-21 19:21:14,787 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2021-10-21 19:21:14,788 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:21:24,309 WARN L838 $PredicateComparison]: unable to prove that (or (not (fp.eq (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0))) c_ULTIMATE.start_main_~x1~0)) (fp.eq c_ULTIMATE.start_main_~x1~0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) is different from false [2021-10-21 19:21:26,443 WARN L860 $PredicateComparison]: unable to prove that (or (not (fp.eq (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0))) c_ULTIMATE.start_main_~x1~0)) (fp.eq c_ULTIMATE.start_main_~x1~0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) is different from true [2021-10-21 19:21:36,593 WARN L207 SmtUtils]: Spent 5.27 s on a formula simplification that was a NOOP. DAG size: 8 [2021-10-21 19:21:38,871 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))))) is different from false [2021-10-21 19:21:41,149 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))))) is different from true [2021-10-21 19:21:46,580 WARN L207 SmtUtils]: Spent 5.42 s on a formula simplification that was a NOOP. DAG size: 9 [2021-10-21 19:21:52,373 WARN L207 SmtUtils]: Spent 5.79 s on a formula simplification that was a NOOP. DAG size: 9 [2021-10-21 19:21:54,764 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1) .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))))) is different from false [2021-10-21 19:21:57,159 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1) .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))))) is different from true [2021-10-21 19:22:02,995 WARN L207 SmtUtils]: Spent 5.82 s on a formula simplification that was a NOOP. DAG size: 11 [2021-10-21 19:22:08,481 WARN L207 SmtUtils]: Spent 5.48 s on a formula simplification that was a NOOP. DAG size: 11 [2021-10-21 19:22:10,884 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1) .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0))))) is different from false [2021-10-21 19:22:13,280 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1) .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0))))) is different from true [2021-10-21 19:22:13,281 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2021-10-21 19:22:13,281 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:22:13,282 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [631294378] [2021-10-21 19:22:13,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [631294378] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-21 19:22:13,282 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:22:13,282 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 13 [2021-10-21 19:22:13,283 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919709040] [2021-10-21 19:22:13,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-21 19:22:13,283 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:22:13,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-21 19:22:13,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=32, Unknown=11, NotChecked=112, Total=182 [2021-10-21 19:22:13,285 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand has 14 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 13 states have internal predecessors, (17), 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) [2021-10-21 19:22:15,726 WARN L860 $PredicateComparison]: unable to prove that (and (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1) .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-10-21 19:22:18,146 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (and (= (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) c_ULTIMATE.start_main_~x1~0) (let ((.cse1 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse0) .cse0))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse1 .cse0) .cse1)) (fp.eq .cse1 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))))) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-10-21 19:22:20,424 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (and (= c_ULTIMATE.start_main_~x1~0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0)) (= c_currentRoundingMode roundNearestTiesToEven) (let ((.cse1 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse0))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse1 .cse0) .cse1)) (fp.eq .cse1 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))))))) is different from false [2021-10-21 19:22:23,055 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (and (= c_ULTIMATE.start_main_~x1~0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0)) (= c_currentRoundingMode roundNearestTiesToEven) (let ((.cse1 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse0))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse1 .cse0) .cse1)) (fp.eq .cse1 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))))))) is different from true [2021-10-21 19:22:26,890 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (and (or (not (fp.eq (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse0) c_ULTIMATE.start_main_~x1~0)) (fp.eq c_ULTIMATE.start_main_~x1~0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (= c_currentRoundingMode roundNearestTiesToEven) (= c_ULTIMATE.start_main_~x1~0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0) .cse0)))) is different from true [2021-10-21 19:22:54,170 WARN L207 SmtUtils]: Spent 23.53 s on a formula simplification. DAG size of input: 22 DAG size of output: 16 [2021-10-21 19:23:06,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:23:06,361 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2021-10-21 19:23:06,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-21 19:23:06,363 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 13 states have internal predecessors, (17), 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 9 [2021-10-21 19:23:06,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:23:06,364 INFO L225 Difference]: With dead ends: 18 [2021-10-21 19:23:06,364 INFO L226 Difference]: Without dead ends: 12 [2021-10-21 19:23:06,365 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 11 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 71495.8ms TimeCoverageRelationStatistics Valid=58, Invalid=78, Unknown=18, NotChecked=308, Total=462 [2021-10-21 19:23:06,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-10-21 19:23:06,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-10-21 19:23:06,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 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) [2021-10-21 19:23:06,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2021-10-21 19:23:06,373 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 9 [2021-10-21 19:23:06,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:23:06,374 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2021-10-21 19:23:06,374 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 13 states have internal predecessors, (17), 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) [2021-10-21 19:23:06,374 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2021-10-21 19:23:06,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-21 19:23:06,375 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:23:06,375 INFO L512 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1] [2021-10-21 19:23:06,396 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e4cbd3-a17f-499d-9385-df3f58e1e165/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-21 19:23:06,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e4cbd3-a17f-499d-9385-df3f58e1e165/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:23:06,576 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:23:06,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:23:06,577 INFO L82 PathProgramCache]: Analyzing trace with hash 522938704, now seen corresponding path program 3 times [2021-10-21 19:23:06,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:23:06,578 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1374528904] [2021-10-21 19:23:06,579 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-21 19:23:06,579 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:23:06,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e4cbd3-a17f-499d-9385-df3f58e1e165/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:23:06,581 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e4cbd3-a17f-499d-9385-df3f58e1e165/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:23:06,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e4cbd3-a17f-499d-9385-df3f58e1e165/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-21 19:23:07,653 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-21 19:23:07,653 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:23:07,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-21 19:23:07,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:23:14,834 WARN L860 $PredicateComparison]: unable to prove that (and (= (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0))) c_ULTIMATE.start_main_~x1~0) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-10-21 19:23:21,382 WARN L207 SmtUtils]: Spent 5.14 s on a formula simplification that was a NOOP. DAG size: 7 [2021-10-21 19:23:26,544 WARN L207 SmtUtils]: Spent 5.16 s on a formula simplification that was a NOOP. DAG size: 7 [2021-10-21 19:23:33,375 WARN L838 $PredicateComparison]: unable to prove that (and (= (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0))) c_ULTIMATE.start_main_~x1~0) (exists ((v_ULTIMATE.start_main_~x~0_16 (_ FloatingPoint 11 53))) (let ((.cse0 (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~x~0_16 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0))))) (and (not (fp.eq .cse0 v_ULTIMATE.start_main_~x~0_16)) (= .cse0 c_ULTIMATE.start_main_~x~0)))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-10-21 19:23:35,504 WARN L860 $PredicateComparison]: unable to prove that (and (= (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0))) c_ULTIMATE.start_main_~x1~0) (exists ((v_ULTIMATE.start_main_~x~0_16 (_ FloatingPoint 11 53))) (let ((.cse0 (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~x~0_16 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0))))) (and (not (fp.eq .cse0 v_ULTIMATE.start_main_~x~0_16)) (= .cse0 c_ULTIMATE.start_main_~x~0)))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-10-21 19:23:43,494 WARN L207 SmtUtils]: Spent 5.18 s on a formula simplification that was a NOOP. DAG size: 7 [2021-10-21 19:23:48,697 WARN L207 SmtUtils]: Spent 5.20 s on a formula simplification that was a NOOP. DAG size: 7 [2021-10-21 19:23:55,569 WARN L838 $PredicateComparison]: unable to prove that (and (fp.eq (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0))) c_ULTIMATE.start_main_~x~0) (exists ((v_ULTIMATE.start_main_~x~0_16 (_ FloatingPoint 11 53))) (let ((.cse0 (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~x~0_16 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0))))) (and (not (fp.eq .cse0 v_ULTIMATE.start_main_~x~0_16)) (= .cse0 c_ULTIMATE.start_main_~x~0)))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-10-21 19:23:57,704 WARN L860 $PredicateComparison]: unable to prove that (and (fp.eq (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0))) c_ULTIMATE.start_main_~x~0) (exists ((v_ULTIMATE.start_main_~x~0_16 (_ FloatingPoint 11 53))) (let ((.cse0 (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~x~0_16 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0))))) (and (not (fp.eq .cse0 v_ULTIMATE.start_main_~x~0_16)) (= .cse0 c_ULTIMATE.start_main_~x~0)))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-10-21 19:24:10,030 WARN L207 SmtUtils]: Spent 5.15 s on a formula simplification that was a NOOP. DAG size: 9 [2021-10-21 19:24:15,192 WARN L207 SmtUtils]: Spent 5.15 s on a formula simplification that was a NOOP. DAG size: 7 [2021-10-21 19:24:22,590 WARN L207 SmtUtils]: Spent 5.13 s on a formula simplification that was a NOOP. DAG size: 8 [2021-10-21 19:24:37,119 WARN L207 SmtUtils]: Spent 5.19 s on a formula simplification that was a NOOP. DAG size: 3 [2021-10-21 19:24:42,269 WARN L207 SmtUtils]: Spent 5.15 s on a formula simplification that was a NOOP. DAG size: 9 [2021-10-21 19:24:47,438 WARN L207 SmtUtils]: Spent 5.17 s on a formula simplification that was a NOOP. DAG size: 8 [2021-10-21 19:24:52,642 WARN L207 SmtUtils]: Spent 5.20 s on a formula simplification that was a NOOP. DAG size: 3 [2021-10-21 19:24:57,811 WARN L207 SmtUtils]: Spent 5.16 s on a formula simplification that was a NOOP. DAG size: 7 [2021-10-21 19:25:00,108 WARN L838 $PredicateComparison]: unable to prove that (exists ((v_ULTIMATE.start_main_~x~0_16 (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven v_ULTIMATE.start_main_~x~0_16 .cse1))) (and (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0) (let ((.cse2 (fp.eq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))))) (or (and (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)) (not .cse2)) (and .cse2 (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32))))) (not (fp.eq .cse0 v_ULTIMATE.start_main_~x~0_16)))))) is different from false [2021-10-21 19:25:02,289 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ULTIMATE.start_main_~x~0_16 (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven v_ULTIMATE.start_main_~x~0_16 .cse1))) (and (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0) (let ((.cse2 (fp.eq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))))) (or (and (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)) (not .cse2)) (and .cse2 (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32))))) (not (fp.eq .cse0 v_ULTIMATE.start_main_~x~0_16)))))) is different from true [2021-10-21 19:25:14,687 WARN L207 SmtUtils]: Spent 5.23 s on a formula simplification that was a NOOP. DAG size: 9 [2021-10-21 19:25:19,897 WARN L207 SmtUtils]: Spent 5.21 s on a formula simplification that was a NOOP. DAG size: 7 [2021-10-21 19:25:22,169 WARN L838 $PredicateComparison]: unable to prove that (exists ((v_ULTIMATE.start_main_~x~0_16 (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven v_ULTIMATE.start_main_~x~0_16 .cse1))) (and (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0) (not (fp.eq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (not (fp.eq .cse0 v_ULTIMATE.start_main_~x~0_16)))))) is different from false [2021-10-21 19:25:24,354 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ULTIMATE.start_main_~x~0_16 (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven v_ULTIMATE.start_main_~x~0_16 .cse1))) (and (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0) (not (fp.eq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (not (fp.eq .cse0 v_ULTIMATE.start_main_~x~0_16)))))) is different from true [2021-10-21 19:25:24,354 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 9 not checked. [2021-10-21 19:25:24,355 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:25:35,811 WARN L838 $PredicateComparison]: unable to prove that (or (fp.eq c_ULTIMATE.start_main_~x1~0 c_ULTIMATE.start_main_~x~0) (not (fp.eq (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0))) c_ULTIMATE.start_main_~x1~0)) (fp.eq c_ULTIMATE.start_main_~x1~0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) is different from false [2021-10-21 19:25:37,944 WARN L860 $PredicateComparison]: unable to prove that (or (fp.eq c_ULTIMATE.start_main_~x1~0 c_ULTIMATE.start_main_~x~0) (not (fp.eq (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0))) c_ULTIMATE.start_main_~x1~0)) (fp.eq c_ULTIMATE.start_main_~x1~0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) is different from true [2021-10-21 19:25:43,157 WARN L207 SmtUtils]: Spent 5.20 s on a formula simplification that was a NOOP. DAG size: 6 [2021-10-21 19:25:48,341 WARN L207 SmtUtils]: Spent 5.18 s on a formula simplification that was a NOOP. DAG size: 8 [2021-10-21 19:25:55,404 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~x~0_18 (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~x~0_18 .cse1))) (or (fp.eq .cse0 v_ULTIMATE.start_main_~x~0_18) (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))))) is different from false [2021-10-21 19:25:57,660 WARN L860 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~x~0_18 (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~x~0_18 .cse1))) (or (fp.eq .cse0 v_ULTIMATE.start_main_~x~0_18) (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))))) is different from true [2021-10-21 19:26:02,856 WARN L207 SmtUtils]: Spent 5.18 s on a formula simplification that was a NOOP. DAG size: 6 [2021-10-21 19:26:08,052 WARN L207 SmtUtils]: Spent 5.19 s on a formula simplification that was a NOOP. DAG size: 8 [2021-10-21 19:26:18,131 WARN L207 SmtUtils]: Spent 5.20 s on a formula simplification that was a NOOP. DAG size: 6 [2021-10-21 19:26:23,320 WARN L207 SmtUtils]: Spent 5.19 s on a formula simplification that was a NOOP. DAG size: 8 [2021-10-21 19:26:33,460 WARN L207 SmtUtils]: Spent 5.23 s on a formula simplification that was a NOOP. DAG size: 6 [2021-10-21 19:26:38,658 WARN L207 SmtUtils]: Spent 5.20 s on a formula simplification that was a NOOP. DAG size: 8 [2021-10-21 19:26:48,733 WARN L207 SmtUtils]: Spent 5.20 s on a formula simplification that was a NOOP. DAG size: 6 [2021-10-21 19:26:53,938 WARN L207 SmtUtils]: Spent 5.20 s on a formula simplification that was a NOOP. DAG size: 8 [2021-10-21 19:26:58,884 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 9 not checked. [2021-10-21 19:26:58,885 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:26:58,885 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1374528904] [2021-10-21 19:26:58,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1374528904] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-21 19:26:58,885 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:26:58,885 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2021-10-21 19:26:58,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647778613] [2021-10-21 19:26:58,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-21 19:26:58,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:26:58,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-21 19:26:58,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=21, Unknown=13, NotChecked=98, Total=156 [2021-10-21 19:26:58,888 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 13 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 12 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) [2021-10-21 19:27:01,096 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ULTIMATE.start_main_~x~0_18 (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~x~0_18 .cse1))) (or (fp.eq .cse0 v_ULTIMATE.start_main_~x~0_18) (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-10-21 19:27:03,352 WARN L860 $PredicateComparison]: unable to prove that (and (forall ((v_ULTIMATE.start_main_~x~0_18 (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~x~0_18 .cse1))) (or (fp.eq .cse0 v_ULTIMATE.start_main_~x~0_18) (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-10-21 19:27:05,754 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (and (= (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x~0 .cse0) c_ULTIMATE.start_main_~x1~0) (forall ((v_ULTIMATE.start_main_~x~0_18 (_ FloatingPoint 11 53))) (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse1 (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~x~0_18 .cse2))) (or (fp.eq .cse1 v_ULTIMATE.start_main_~x~0_18) (fp.eq .cse1 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse1 .cse2) .cse1)))))) (or (fp.eq c_ULTIMATE.start_main_~x1~0 c_ULTIMATE.start_main_~x~0) (not (fp.eq (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse0) c_ULTIMATE.start_main_~x1~0)) (fp.eq c_ULTIMATE.start_main_~x1~0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (= c_currentRoundingMode roundNearestTiesToEven))) is different from false [2021-10-21 19:27:08,227 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (and (= (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x~0 .cse0) c_ULTIMATE.start_main_~x1~0) (forall ((v_ULTIMATE.start_main_~x~0_18 (_ FloatingPoint 11 53))) (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse1 (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~x~0_18 .cse2))) (or (fp.eq .cse1 v_ULTIMATE.start_main_~x~0_18) (fp.eq .cse1 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse1 .cse2) .cse1)))))) (or (fp.eq c_ULTIMATE.start_main_~x1~0 c_ULTIMATE.start_main_~x~0) (not (fp.eq (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse0) c_ULTIMATE.start_main_~x1~0)) (fp.eq c_ULTIMATE.start_main_~x1~0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-10-21 19:27:11,039 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.eq c_ULTIMATE.start_main_~x1~0 c_ULTIMATE.start_main_~x~0)) (.cse2 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0))) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (and (or (not .cse0) (fp.eq c_ULTIMATE.start_main_~x~0 .cse1)) (= (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x~0 .cse2) c_ULTIMATE.start_main_~x1~0) (exists ((v_ULTIMATE.start_main_~x~0_16 (_ FloatingPoint 11 53))) (let ((.cse3 (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~x~0_16 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0))))) (and (not (fp.eq .cse3 v_ULTIMATE.start_main_~x~0_16)) (= .cse3 c_ULTIMATE.start_main_~x~0)))) (forall ((v_ULTIMATE.start_main_~x~0_18 (_ FloatingPoint 11 53))) (let ((.cse5 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse4 (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~x~0_18 .cse5))) (or (fp.eq .cse4 v_ULTIMATE.start_main_~x~0_18) (fp.eq .cse4 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse4 .cse5) .cse4)))))) (or .cse0 (not (fp.eq (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse2) c_ULTIMATE.start_main_~x1~0)) (fp.eq c_ULTIMATE.start_main_~x1~0 .cse1)) (= c_currentRoundingMode roundNearestTiesToEven))) is different from false [2021-10-21 19:27:13,535 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.eq c_ULTIMATE.start_main_~x1~0 c_ULTIMATE.start_main_~x~0)) (.cse2 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0))) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (and (or (not .cse0) (fp.eq c_ULTIMATE.start_main_~x~0 .cse1)) (= (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x~0 .cse2) c_ULTIMATE.start_main_~x1~0) (exists ((v_ULTIMATE.start_main_~x~0_16 (_ FloatingPoint 11 53))) (let ((.cse3 (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~x~0_16 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0))))) (and (not (fp.eq .cse3 v_ULTIMATE.start_main_~x~0_16)) (= .cse3 c_ULTIMATE.start_main_~x~0)))) (forall ((v_ULTIMATE.start_main_~x~0_18 (_ FloatingPoint 11 53))) (let ((.cse5 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse4 (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~x~0_18 .cse5))) (or (fp.eq .cse4 v_ULTIMATE.start_main_~x~0_18) (fp.eq .cse4 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse4 .cse5) .cse4)))))) (or .cse0 (not (fp.eq (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse2) c_ULTIMATE.start_main_~x1~0)) (fp.eq c_ULTIMATE.start_main_~x1~0 .cse1)) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-10-21 19:27:15,801 WARN L838 $PredicateComparison]: unable to prove that (and (fp.eq (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0))) c_ULTIMATE.start_main_~x~0) (fp.eq c_ULTIMATE.start_main_~x~0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (exists ((v_ULTIMATE.start_main_~x~0_16 (_ FloatingPoint 11 53))) (let ((.cse0 (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~x~0_16 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0))))) (and (not (fp.eq .cse0 v_ULTIMATE.start_main_~x~0_16)) (= .cse0 c_ULTIMATE.start_main_~x~0)))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-10-21 19:27:17,929 WARN L860 $PredicateComparison]: unable to prove that (and (fp.eq (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0))) c_ULTIMATE.start_main_~x~0) (fp.eq c_ULTIMATE.start_main_~x~0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (exists ((v_ULTIMATE.start_main_~x~0_16 (_ FloatingPoint 11 53))) (let ((.cse0 (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~x~0_16 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0))))) (and (not (fp.eq .cse0 v_ULTIMATE.start_main_~x~0_16)) (= .cse0 c_ULTIMATE.start_main_~x~0)))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-10-21 19:27:20,201 WARN L838 $PredicateComparison]: unable to prove that (and (not (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32))) (exists ((v_ULTIMATE.start_main_~x~0_16 (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven v_ULTIMATE.start_main_~x~0_16 .cse1))) (and (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0) (let ((.cse2 (fp.eq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))))) (or (and (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)) (not .cse2)) (and .cse2 (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32))))) (not (fp.eq .cse0 v_ULTIMATE.start_main_~x~0_16))))))) is different from false [2021-10-21 19:27:20,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:27:20,220 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2021-10-21 19:27:20,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-21 19:27:20,220 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 12 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) Word has length 11 [2021-10-21 19:27:20,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:27:20,221 INFO L225 Difference]: With dead ends: 12 [2021-10-21 19:27:20,221 INFO L226 Difference]: Without dead ends: 0 [2021-10-21 19:27:20,222 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 12 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 50828.1ms TimeCoverageRelationStatistics Valid=34, Invalid=22, Unknown=22, NotChecked=228, Total=306 [2021-10-21 19:27:20,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-21 19:27:20,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-21 19:27:20,222 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) [2021-10-21 19:27:20,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-21 19:27:20,222 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2021-10-21 19:27:20,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:27:20,223 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-21 19:27:20,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 12 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) [2021-10-21 19:27:20,223 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-21 19:27:20,223 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-21 19:27:20,226 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:27:20,259 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e4cbd3-a17f-499d-9385-df3f58e1e165/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-21 19:27:20,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e4cbd3-a17f-499d-9385-df3f58e1e165/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:27:20,430 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-21 19:27:20,432 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:27:20,466 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:27:20,526 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:27:54,558 WARN L228 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e4cbd3-a17f-499d-9385-df3f58e1e165/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-10-21 19:27:54,559 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e4cbd3-a17f-499d-9385-df3f58e1e165/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:241) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:260) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:61) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.getRedundancy(SimplifyDDA.java:621) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.simplify.SimplifyDDAWithTimeout.getRedundancy(SimplifyDDAWithTimeout.java:120) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA$Simplifier.walk(SimplifyDDA.java:393) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.simplifyOnce(SimplifyDDA.java:649) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.simplify.SimplifyDDAWithTimeout.getSimplifiedTerm(SimplifyDDAWithTimeout.java:180) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:174) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplifyWithStatistics(SmtUtils.java:239) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplifyWithStatistics(SmtUtils.java:231) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter(HoareAnnotationComposer.java:149) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.(HoareAnnotationComposer.java:105) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeIcfgHoareAnnotation(BasicCegarLoop.java:1177) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop$CegarLoopResultBuilder.getResult(AbstractCegarLoop.java:831) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:350) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1465) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:658) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:237) ... 39 more [2021-10-21 19:27:54,563 INFO L168 Benchmark]: Toolchain (without parser) took 511276.04 ms. Allocated memory was 65.0 MB in the beginning and 79.7 MB in the end (delta: 14.7 MB). Free memory was 45.2 MB in the beginning and 28.3 MB in the end (delta: 16.9 MB). Peak memory consumption was 30.6 MB. Max. memory is 16.1 GB. [2021-10-21 19:27:54,563 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 65.0 MB. Free memory is still 45.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:27:54,563 INFO L168 Benchmark]: CACSL2BoogieTranslator took 285.38 ms. Allocated memory is still 65.0 MB. Free memory was 45.0 MB in the beginning and 48.6 MB in the end (delta: -3.6 MB). Peak memory consumption was 13.8 MB. Max. memory is 16.1 GB. [2021-10-21 19:27:54,564 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.88 ms. Allocated memory is still 65.0 MB. Free memory was 48.4 MB in the beginning and 47.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:27:54,564 INFO L168 Benchmark]: Boogie Preprocessor took 47.72 ms. Allocated memory is still 65.0 MB. Free memory was 47.1 MB in the beginning and 46.0 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:27:54,565 INFO L168 Benchmark]: RCFGBuilder took 3598.32 ms. Allocated memory is still 65.0 MB. Free memory was 45.8 MB in the beginning and 37.0 MB in the end (delta: 8.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-21 19:27:54,565 INFO L168 Benchmark]: TraceAbstraction took 507277.28 ms. Allocated memory was 65.0 MB in the beginning and 79.7 MB in the end (delta: 14.7 MB). Free memory was 36.4 MB in the beginning and 28.3 MB in the end (delta: 8.1 MB). Peak memory consumption was 23.0 MB. Max. memory is 16.1 GB. [2021-10-21 19:27:54,570 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### [2021-10-21 19:27:54,574 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e4cbd3-a17f-499d-9385-df3f58e1e165/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 65.0 MB. Free memory is still 45.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 285.38 ms. Allocated memory is still 65.0 MB. Free memory was 45.0 MB in the beginning and 48.6 MB in the end (delta: -3.6 MB). Peak memory consumption was 13.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 56.88 ms. Allocated memory is still 65.0 MB. Free memory was 48.4 MB in the beginning and 47.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 47.72 ms. Allocated memory is still 65.0 MB. Free memory was 47.1 MB in the beginning and 46.0 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 3598.32 ms. Allocated memory is still 65.0 MB. Free memory was 45.8 MB in the beginning and 37.0 MB in the end (delta: 8.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 507277.28 ms. Allocated memory was 65.0 MB in the beginning and 79.7 MB in the end (delta: 14.7 MB). Free memory was 36.4 MB in the beginning and 28.3 MB in the end (delta: 8.1 MB). Peak memory consumption was 23.0 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e4cbd3-a17f-499d-9385-df3f58e1e165/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e4cbd3-a17f-499d-9385-df3f58e1e165/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:241) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...