./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/filter1.c.v+nlh-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f8e1c903 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8af9ce-5549-4caa-9362-a95d1e812693/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8af9ce-5549-4caa-9362-a95d1e812693/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8af9ce-5549-4caa-9362-a95d1e812693/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8af9ce-5549-4caa-9362-a95d1e812693/bin/uautomizer-IVEQpCNsaX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/filter1.c.v+nlh-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8af9ce-5549-4caa-9362-a95d1e812693/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8af9ce-5549-4caa-9362-a95d1e812693/bin/uautomizer-IVEQpCNsaX --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 ae4391defacca69a38cbe50f54517d5a9901ae5aadf26a16d1de8c85a3ebd382 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 10:43:57,246 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 10:43:57,249 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 10:43:57,310 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 10:43:57,310 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 10:43:57,314 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 10:43:57,316 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 10:43:57,320 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 10:43:57,323 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 10:43:57,329 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 10:43:57,330 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 10:43:57,332 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 10:43:57,332 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 10:43:57,335 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 10:43:57,338 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 10:43:57,346 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 10:43:57,348 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 10:43:57,349 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 10:43:57,352 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 10:43:57,361 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 10:43:57,363 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 10:43:57,364 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 10:43:57,368 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 10:43:57,369 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 10:43:57,379 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 10:43:57,379 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 10:43:57,380 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 10:43:57,382 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 10:43:57,383 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 10:43:57,385 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 10:43:57,385 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 10:43:57,386 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 10:43:57,389 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 10:43:57,390 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 10:43:57,392 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 10:43:57,392 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 10:43:57,393 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 10:43:57,393 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 10:43:57,394 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 10:43:57,395 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 10:43:57,396 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 10:43:57,399 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8af9ce-5549-4caa-9362-a95d1e812693/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-09 10:43:57,443 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 10:43:57,444 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 10:43:57,444 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 10:43:57,445 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 10:43:57,446 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 10:43:57,447 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 10:43:57,447 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 10:43:57,447 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 10:43:57,447 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 10:43:57,447 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 10:43:57,448 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 10:43:57,449 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 10:43:57,449 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-09 10:43:57,449 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 10:43:57,449 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-09 10:43:57,449 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 10:43:57,450 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-09 10:43:57,450 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 10:43:57,450 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-09 10:43:57,450 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 10:43:57,450 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 10:43:57,451 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 10:43:57,451 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 10:43:57,451 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 10:43:57,451 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 10:43:57,451 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-09 10:43:57,452 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-09 10:43:57,452 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-09 10:43:57,452 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-09 10:43:57,452 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-09 10:43:57,452 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-09 10:43:57,452 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 10:43:57,453 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_5b8af9ce-5549-4caa-9362-a95d1e812693/bin/uautomizer-IVEQpCNsaX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8af9ce-5549-4caa-9362-a95d1e812693/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ae4391defacca69a38cbe50f54517d5a9901ae5aadf26a16d1de8c85a3ebd382 [2021-11-09 10:43:57,730 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 10:43:57,775 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 10:43:57,778 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 10:43:57,780 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 10:43:57,781 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 10:43:57,782 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8af9ce-5549-4caa-9362-a95d1e812693/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/float-benchs/filter1.c.v+nlh-reducer.c [2021-11-09 10:43:57,888 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8af9ce-5549-4caa-9362-a95d1e812693/bin/uautomizer-IVEQpCNsaX/data/e6be34848/95249f92143a46e5973f3cbe5f198da7/FLAG08a866bcf [2021-11-09 10:43:58,436 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 10:43:58,437 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8af9ce-5549-4caa-9362-a95d1e812693/sv-benchmarks/c/float-benchs/filter1.c.v+nlh-reducer.c [2021-11-09 10:43:58,446 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8af9ce-5549-4caa-9362-a95d1e812693/bin/uautomizer-IVEQpCNsaX/data/e6be34848/95249f92143a46e5973f3cbe5f198da7/FLAG08a866bcf [2021-11-09 10:43:58,800 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8af9ce-5549-4caa-9362-a95d1e812693/bin/uautomizer-IVEQpCNsaX/data/e6be34848/95249f92143a46e5973f3cbe5f198da7 [2021-11-09 10:43:58,802 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 10:43:58,804 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-09 10:43:58,813 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 10:43:58,813 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 10:43:58,816 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 10:43:58,817 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:43:58" (1/1) ... [2021-11-09 10:43:58,818 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57aa2dab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:43:58, skipping insertion in model container [2021-11-09 10:43:58,818 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:43:58" (1/1) ... [2021-11-09 10:43:58,824 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 10:43:58,847 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 10:43:59,039 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_5b8af9ce-5549-4caa-9362-a95d1e812693/sv-benchmarks/c/float-benchs/filter1.c.v+nlh-reducer.c[1372,1385] [2021-11-09 10:43:59,050 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_5b8af9ce-5549-4caa-9362-a95d1e812693/sv-benchmarks/c/float-benchs/filter1.c.v+nlh-reducer.c[2411,2424] [2021-11-09 10:43:59,058 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 10:43:59,069 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 10:43:59,088 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_5b8af9ce-5549-4caa-9362-a95d1e812693/sv-benchmarks/c/float-benchs/filter1.c.v+nlh-reducer.c[1372,1385] [2021-11-09 10:43:59,093 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_5b8af9ce-5549-4caa-9362-a95d1e812693/sv-benchmarks/c/float-benchs/filter1.c.v+nlh-reducer.c[2411,2424] [2021-11-09 10:43:59,098 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 10:43:59,112 INFO L208 MainTranslator]: Completed translation [2021-11-09 10:43:59,113 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:43:59 WrapperNode [2021-11-09 10:43:59,113 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 10:43:59,114 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-09 10:43:59,115 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-09 10:43:59,115 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-09 10:43:59,122 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:43:59" (1/1) ... [2021-11-09 10:43:59,129 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:43:59" (1/1) ... [2021-11-09 10:43:59,152 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-09 10:43:59,153 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 10:43:59,154 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 10:43:59,154 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 10:43:59,163 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:43:59" (1/1) ... [2021-11-09 10:43:59,164 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:43:59" (1/1) ... [2021-11-09 10:43:59,166 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:43:59" (1/1) ... [2021-11-09 10:43:59,166 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:43:59" (1/1) ... [2021-11-09 10:43:59,173 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:43:59" (1/1) ... [2021-11-09 10:43:59,176 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:43:59" (1/1) ... [2021-11-09 10:43:59,178 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:43:59" (1/1) ... [2021-11-09 10:43:59,181 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 10:43:59,183 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 10:43:59,183 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 10:43:59,183 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 10:43:59,184 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:43:59" (1/1) ... [2021-11-09 10:43:59,193 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 10:43:59,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8af9ce-5549-4caa-9362-a95d1e812693/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:43:59,234 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8af9ce-5549-4caa-9362-a95d1e812693/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 10:43:59,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8af9ce-5549-4caa-9362-a95d1e812693/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 10:43:59,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-09 10:43:59,289 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 10:43:59,290 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 10:43:59,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 10:43:59,589 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 10:43:59,589 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-09 10:43:59,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:43:59 BoogieIcfgContainer [2021-11-09 10:43:59,592 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 10:43:59,593 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 10:43:59,593 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 10:43:59,598 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 10:43:59,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 10:43:58" (1/3) ... [2021-11-09 10:43:59,599 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f45d4b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:43:59, skipping insertion in model container [2021-11-09 10:43:59,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:43:59" (2/3) ... [2021-11-09 10:43:59,599 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f45d4b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:43:59, skipping insertion in model container [2021-11-09 10:43:59,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:43:59" (3/3) ... [2021-11-09 10:43:59,601 INFO L111 eAbstractionObserver]: Analyzing ICFG filter1.c.v+nlh-reducer.c [2021-11-09 10:43:59,606 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 10:43:59,607 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-09 10:43:59,663 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 10:43:59,670 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 [2021-11-09 10:43:59,671 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-09 10:43:59,688 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 31 states have (on average 1.5806451612903225) internal successors, (49), 33 states have internal predecessors, (49), 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) [2021-11-09 10:43:59,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-09 10:43:59,695 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:43:59,695 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:43:59,696 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 10:43:59,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:43:59,702 INFO L85 PathProgramCache]: Analyzing trace with hash 775758574, now seen corresponding path program 1 times [2021-11-09 10:43:59,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:43:59,712 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234008563] [2021-11-09 10:43:59,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:43:59,713 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:43:59,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:43:59,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:43:59,946 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:43:59,946 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234008563] [2021-11-09 10:43:59,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234008563] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:43:59,948 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:43:59,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 10:43:59,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710475310] [2021-11-09 10:43:59,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 10:43:59,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:43:59,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 10:43:59,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 10:43:59,973 INFO L87 Difference]: Start difference. First operand has 34 states, 31 states have (on average 1.5806451612903225) internal successors, (49), 33 states have internal predecessors, (49), 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 2.6) internal successors, (13), 5 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) [2021-11-09 10:44:00,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:44:00,054 INFO L93 Difference]: Finished difference Result 47 states and 61 transitions. [2021-11-09 10:44:00,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-09 10:44:00,056 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 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 13 [2021-11-09 10:44:00,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:44:00,065 INFO L225 Difference]: With dead ends: 47 [2021-11-09 10:44:00,066 INFO L226 Difference]: Without dead ends: 34 [2021-11-09 10:44:00,069 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-09 10:44:00,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-11-09 10:44:00,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2021-11-09 10:44:00,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 30 states have (on average 1.3333333333333333) internal successors, (40), 31 states have internal predecessors, (40), 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) [2021-11-09 10:44:00,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 40 transitions. [2021-11-09 10:44:00,112 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 40 transitions. Word has length 13 [2021-11-09 10:44:00,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:44:00,113 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 40 transitions. [2021-11-09 10:44:00,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 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) [2021-11-09 10:44:00,114 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 40 transitions. [2021-11-09 10:44:00,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-09 10:44:00,115 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:44:00,115 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:44:00,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-09 10:44:00,116 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 10:44:00,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:44:00,117 INFO L85 PathProgramCache]: Analyzing trace with hash 845201395, now seen corresponding path program 1 times [2021-11-09 10:44:00,118 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:44:00,118 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542416184] [2021-11-09 10:44:00,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:44:00,119 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:44:00,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 10:44:00,146 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 10:44:00,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 10:44:00,228 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-09 10:44:00,228 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-09 10:44:00,230 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-09 10:44:00,233 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-11-09 10:44:00,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-09 10:44:00,238 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-09 10:44:00,242 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-09 10:44:00,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 10:44:00 BoogieIcfgContainer [2021-11-09 10:44:00,306 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-09 10:44:00,309 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-09 10:44:00,309 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-09 10:44:00,309 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-09 10:44:00,310 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:43:59" (3/4) ... [2021-11-09 10:44:00,316 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-09 10:44:00,317 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-09 10:44:00,323 INFO L168 Benchmark]: Toolchain (without parser) took 1514.18 ms. Allocated memory is still 127.9 MB. Free memory was 92.6 MB in the beginning and 58.6 MB in the end (delta: 34.0 MB). Peak memory consumption was 30.9 MB. Max. memory is 16.1 GB. [2021-11-09 10:44:00,325 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 88.1 MB. Free memory was 59.8 MB in the beginning and 59.8 MB in the end (delta: 27.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 10:44:00,327 INFO L168 Benchmark]: CACSL2BoogieTranslator took 300.93 ms. Allocated memory is still 127.9 MB. Free memory was 92.3 MB in the beginning and 101.2 MB in the end (delta: -8.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-09 10:44:00,329 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.37 ms. Allocated memory is still 127.9 MB. Free memory was 101.2 MB in the beginning and 99.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-09 10:44:00,334 INFO L168 Benchmark]: Boogie Preprocessor took 28.21 ms. Allocated memory is still 127.9 MB. Free memory was 99.6 MB in the beginning and 98.3 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 10:44:00,335 INFO L168 Benchmark]: RCFGBuilder took 409.19 ms. Allocated memory is still 127.9 MB. Free memory was 98.3 MB in the beginning and 86.5 MB in the end (delta: 11.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-09 10:44:00,336 INFO L168 Benchmark]: TraceAbstraction took 713.29 ms. Allocated memory is still 127.9 MB. Free memory was 85.9 MB in the beginning and 58.6 MB in the end (delta: 27.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. [2021-11-09 10:44:00,336 INFO L168 Benchmark]: Witness Printer took 8.49 ms. Allocated memory is still 127.9 MB. Free memory is still 58.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 10:44:00,344 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 88.1 MB. Free memory was 59.8 MB in the beginning and 59.8 MB in the end (delta: 27.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 300.93 ms. Allocated memory is still 127.9 MB. Free memory was 92.3 MB in the beginning and 101.2 MB in the end (delta: -8.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 38.37 ms. Allocated memory is still 127.9 MB. Free memory was 101.2 MB in the beginning and 99.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 28.21 ms. Allocated memory is still 127.9 MB. Free memory was 99.6 MB in the beginning and 98.3 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 409.19 ms. Allocated memory is still 127.9 MB. Free memory was 98.3 MB in the beginning and 86.5 MB in the end (delta: 11.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 713.29 ms. Allocated memory is still 127.9 MB. Free memory was 85.9 MB in the beginning and 58.6 MB in the end (delta: 27.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. * Witness Printer took 8.49 ms. Allocated memory is still 127.9 MB. Free memory is still 58.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 59]: 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 46, overapproximation of to_real at line 42. Possible FailurePath: [L1] int __return_main; [L13] int __tmp_129_0; [L14] int __tmp_129_1; [L15] int __tmp_129_2; [L16] int __tmp_112_0; [L17] int __return_134; VAL [__return_134=0, __return_main=0, __tmp_112_0=0, __tmp_129_0=0, __tmp_129_1=0, __tmp_129_2=0] [L20] double main__E0; [L21] double main__E1; [L22] double main__S; [L23] int main__i; [L24] main__E1 = 0 [L25] main__S = 0 [L26] main__i = 0 VAL [__return_134=0, __return_main=0, __tmp_112_0=0, __tmp_129_0=0, __tmp_129_1=0, __tmp_129_2=0] [L27] COND TRUE main__i <= 1000000 [L29] main__E0 = __VERIFIER_nondet_double() [L30] int main____CPAchecker_TMP_0; VAL [__return_134=0, __return_main=0, __tmp_112_0=0, __tmp_129_0=0, __tmp_129_1=0, __tmp_129_2=0] [L31] COND TRUE main__E0 >= -1.0 VAL [__return_134=0, __return_main=0, __tmp_112_0=0, __tmp_129_0=0, __tmp_129_1=0, __tmp_129_2=0] [L33] COND TRUE main__E0 <= 1.0 [L35] main____CPAchecker_TMP_0 = 1 VAL [__return_134=0, __return_main=0, __tmp_112_0=0, __tmp_129_0=0, __tmp_129_1=0, __tmp_129_2=0] [L36] COND TRUE main____CPAchecker_TMP_0 != 0 [L38] int main____CPAchecker_TMP_1; [L39] main____CPAchecker_TMP_1 = __VERIFIER_nondet_int() [L40] COND TRUE !(main____CPAchecker_TMP_1 == 0) [L42] main__S = 0 VAL [__return_134=0, __return_main=0, __tmp_112_0=0, __tmp_129_0=0, __tmp_129_1=0, __tmp_129_2=0] [L44] main__E1 = main__E0 [L45] int main____CPAchecker_TMP_2; VAL [__return_134=0, __return_main=0, __tmp_112_0=0, __tmp_129_0=0, __tmp_129_1=0, __tmp_129_2=0] [L46] COND FALSE !(main__S >= -10000.0) VAL [__return_134=0, __return_main=0, __tmp_112_0=0, __tmp_129_0=0, __tmp_129_1=0, __tmp_129_2=0] [L166] main____CPAchecker_TMP_2 = 0 VAL [__return_134=0, __return_main=0, __tmp_112_0=0, __tmp_129_0=0, __tmp_129_1=0, __tmp_129_2=0] [L53] int __tmp_1; [L54] __tmp_1 = main____CPAchecker_TMP_2 [L55] int __VERIFIER_assert__cond; [L56] __VERIFIER_assert__cond = __tmp_1 VAL [__return_134=0, __return_main=0, __tmp_112_0=0, __tmp_129_0=0, __tmp_129_1=0, __tmp_129_2=0] [L57] COND TRUE __VERIFIER_assert__cond == 0 VAL [__return_134=0, __return_main=0, __tmp_112_0=0, __tmp_129_0=0, __tmp_129_1=0, __tmp_129_2=0] [L59] reach_error() VAL [__return_134=0, __return_main=0, __tmp_112_0=0, __tmp_129_0=0, __tmp_129_1=0, __tmp_129_2=0] - UnprovableResult [Line: 105]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 34 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 45 SDtfs, 45 SDslu, 89 SDs, 0 SdLazy, 17 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=0, InterpolantAutomatonStates: 7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 20 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-09 10:44:00,402 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8af9ce-5549-4caa-9362-a95d1e812693/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8af9ce-5549-4caa-9362-a95d1e812693/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8af9ce-5549-4caa-9362-a95d1e812693/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8af9ce-5549-4caa-9362-a95d1e812693/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8af9ce-5549-4caa-9362-a95d1e812693/bin/uautomizer-IVEQpCNsaX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/filter1.c.v+nlh-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8af9ce-5549-4caa-9362-a95d1e812693/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8af9ce-5549-4caa-9362-a95d1e812693/bin/uautomizer-IVEQpCNsaX --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 ae4391defacca69a38cbe50f54517d5a9901ae5aadf26a16d1de8c85a3ebd382 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 10:44:03,007 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 10:44:03,010 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 10:44:03,068 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 10:44:03,069 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 10:44:03,074 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 10:44:03,076 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 10:44:03,084 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 10:44:03,087 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 10:44:03,096 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 10:44:03,097 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 10:44:03,099 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 10:44:03,100 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 10:44:03,103 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 10:44:03,106 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 10:44:03,112 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 10:44:03,114 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 10:44:03,123 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 10:44:03,125 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 10:44:03,132 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 10:44:03,135 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 10:44:03,137 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 10:44:03,139 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 10:44:03,142 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 10:44:03,148 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 10:44:03,149 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 10:44:03,149 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 10:44:03,151 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 10:44:03,152 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 10:44:03,153 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 10:44:03,153 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 10:44:03,154 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 10:44:03,157 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 10:44:03,158 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 10:44:03,159 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 10:44:03,159 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 10:44:03,161 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 10:44:03,161 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 10:44:03,161 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 10:44:03,163 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 10:44:03,164 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 10:44:03,170 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8af9ce-5549-4caa-9362-a95d1e812693/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-11-09 10:44:03,220 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 10:44:03,220 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 10:44:03,221 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 10:44:03,221 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 10:44:03,224 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 10:44:03,224 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 10:44:03,224 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 10:44:03,225 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 10:44:03,225 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 10:44:03,225 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 10:44:03,227 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 10:44:03,227 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-09 10:44:03,227 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 10:44:03,227 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-09 10:44:03,228 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-09 10:44:03,228 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-09 10:44:03,228 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 10:44:03,229 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-09 10:44:03,229 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 10:44:03,229 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-09 10:44:03,229 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 10:44:03,230 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 10:44:03,230 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 10:44:03,230 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 10:44:03,231 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 10:44:03,231 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 10:44:03,231 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-09 10:44:03,231 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-09 10:44:03,232 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-09 10:44:03,232 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-09 10:44:03,232 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-09 10:44:03,232 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-09 10:44:03,233 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 10:44:03,233 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-09 10:44:03,233 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_5b8af9ce-5549-4caa-9362-a95d1e812693/bin/uautomizer-IVEQpCNsaX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8af9ce-5549-4caa-9362-a95d1e812693/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ae4391defacca69a38cbe50f54517d5a9901ae5aadf26a16d1de8c85a3ebd382 [2021-11-09 10:44:03,659 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 10:44:03,700 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 10:44:03,703 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 10:44:03,704 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 10:44:03,705 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 10:44:03,706 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8af9ce-5549-4caa-9362-a95d1e812693/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/float-benchs/filter1.c.v+nlh-reducer.c [2021-11-09 10:44:03,772 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8af9ce-5549-4caa-9362-a95d1e812693/bin/uautomizer-IVEQpCNsaX/data/d5a1c5983/c10374e911584a9bb304df675e0b6472/FLAG8f2aea8aa [2021-11-09 10:44:04,330 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 10:44:04,331 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8af9ce-5549-4caa-9362-a95d1e812693/sv-benchmarks/c/float-benchs/filter1.c.v+nlh-reducer.c [2021-11-09 10:44:04,342 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8af9ce-5549-4caa-9362-a95d1e812693/bin/uautomizer-IVEQpCNsaX/data/d5a1c5983/c10374e911584a9bb304df675e0b6472/FLAG8f2aea8aa [2021-11-09 10:44:04,685 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8af9ce-5549-4caa-9362-a95d1e812693/bin/uautomizer-IVEQpCNsaX/data/d5a1c5983/c10374e911584a9bb304df675e0b6472 [2021-11-09 10:44:04,687 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 10:44:04,689 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-09 10:44:04,691 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 10:44:04,691 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 10:44:04,695 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 10:44:04,696 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:44:04" (1/1) ... [2021-11-09 10:44:04,697 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@485be1c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:44:04, skipping insertion in model container [2021-11-09 10:44:04,697 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:44:04" (1/1) ... [2021-11-09 10:44:04,704 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 10:44:04,730 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 10:44:04,878 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_5b8af9ce-5549-4caa-9362-a95d1e812693/sv-benchmarks/c/float-benchs/filter1.c.v+nlh-reducer.c[1372,1385] [2021-11-09 10:44:04,888 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_5b8af9ce-5549-4caa-9362-a95d1e812693/sv-benchmarks/c/float-benchs/filter1.c.v+nlh-reducer.c[2411,2424] [2021-11-09 10:44:04,895 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 10:44:04,925 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 10:44:04,964 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_5b8af9ce-5549-4caa-9362-a95d1e812693/sv-benchmarks/c/float-benchs/filter1.c.v+nlh-reducer.c[1372,1385] [2021-11-09 10:44:04,970 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_5b8af9ce-5549-4caa-9362-a95d1e812693/sv-benchmarks/c/float-benchs/filter1.c.v+nlh-reducer.c[2411,2424] [2021-11-09 10:44:04,976 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 10:44:05,032 INFO L208 MainTranslator]: Completed translation [2021-11-09 10:44:05,032 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:44:05 WrapperNode [2021-11-09 10:44:05,033 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 10:44:05,034 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-09 10:44:05,035 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-09 10:44:05,035 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-09 10:44:05,043 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:44:05" (1/1) ... [2021-11-09 10:44:05,079 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:44:05" (1/1) ... [2021-11-09 10:44:05,115 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-09 10:44:05,117 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 10:44:05,117 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 10:44:05,118 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 10:44:05,127 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:44:05" (1/1) ... [2021-11-09 10:44:05,128 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:44:05" (1/1) ... [2021-11-09 10:44:05,138 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:44:05" (1/1) ... [2021-11-09 10:44:05,138 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:44:05" (1/1) ... [2021-11-09 10:44:05,145 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:44:05" (1/1) ... [2021-11-09 10:44:05,147 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:44:05" (1/1) ... [2021-11-09 10:44:05,150 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:44:05" (1/1) ... [2021-11-09 10:44:05,154 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 10:44:05,155 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 10:44:05,155 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 10:44:05,155 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 10:44:05,156 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:44:05" (1/1) ... [2021-11-09 10:44:05,164 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 10:44:05,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8af9ce-5549-4caa-9362-a95d1e812693/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:44:05,188 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8af9ce-5549-4caa-9362-a95d1e812693/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 10:44:05,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8af9ce-5549-4caa-9362-a95d1e812693/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 10:44:05,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-09 10:44:05,226 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 10:44:05,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 10:44:05,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 10:44:09,737 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 10:44:09,737 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-09 10:44:09,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:44:09 BoogieIcfgContainer [2021-11-09 10:44:09,739 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 10:44:09,741 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 10:44:09,741 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 10:44:09,744 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 10:44:09,745 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 10:44:04" (1/3) ... [2021-11-09 10:44:09,746 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6249c29c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:44:09, skipping insertion in model container [2021-11-09 10:44:09,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:44:05" (2/3) ... [2021-11-09 10:44:09,746 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6249c29c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:44:09, skipping insertion in model container [2021-11-09 10:44:09,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:44:09" (3/3) ... [2021-11-09 10:44:09,748 INFO L111 eAbstractionObserver]: Analyzing ICFG filter1.c.v+nlh-reducer.c [2021-11-09 10:44:09,754 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 10:44:09,754 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-09 10:44:09,805 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 10:44:09,812 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 [2021-11-09 10:44:09,812 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-09 10:44:09,827 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 31 states have (on average 1.5806451612903225) internal successors, (49), 33 states have internal predecessors, (49), 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) [2021-11-09 10:44:09,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-09 10:44:09,832 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:44:09,833 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:44:09,834 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 10:44:09,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:44:09,840 INFO L85 PathProgramCache]: Analyzing trace with hash 775758574, now seen corresponding path program 1 times [2021-11-09 10:44:09,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 10:44:09,853 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [618572362] [2021-11-09 10:44:09,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:44:09,854 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 10:44:09,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8af9ce-5549-4caa-9362-a95d1e812693/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 10:44:09,858 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8af9ce-5549-4caa-9362-a95d1e812693/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 10:44:09,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8af9ce-5549-4caa-9362-a95d1e812693/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-09 10:44:09,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:44:09,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-09 10:44:09,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:44:10,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:44:10,093 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 10:44:10,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:44:10,204 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 10:44:10,205 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [618572362] [2021-11-09 10:44:10,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [618572362] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 10:44:10,206 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:44:10,206 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-09 10:44:10,208 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463264656] [2021-11-09 10:44:10,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 10:44:10,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 10:44:10,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 10:44:10,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-09 10:44:10,231 INFO L87 Difference]: Start difference. First operand has 34 states, 31 states have (on average 1.5806451612903225) internal successors, (49), 33 states have internal predecessors, (49), 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 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 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) [2021-11-09 10:44:10,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:44:10,372 INFO L93 Difference]: Finished difference Result 65 states and 86 transitions. [2021-11-09 10:44:10,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-09 10:44:10,381 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 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 13 [2021-11-09 10:44:10,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:44:10,390 INFO L225 Difference]: With dead ends: 65 [2021-11-09 10:44:10,390 INFO L226 Difference]: Without dead ends: 48 [2021-11-09 10:44:10,393 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-09 10:44:10,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-11-09 10:44:10,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 32. [2021-11-09 10:44:10,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 30 states have (on average 1.3333333333333333) internal successors, (40), 31 states have internal predecessors, (40), 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) [2021-11-09 10:44:10,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 40 transitions. [2021-11-09 10:44:10,431 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 40 transitions. Word has length 13 [2021-11-09 10:44:10,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:44:10,431 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 40 transitions. [2021-11-09 10:44:10,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 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) [2021-11-09 10:44:10,432 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 40 transitions. [2021-11-09 10:44:10,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-09 10:44:10,433 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:44:10,433 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:44:10,449 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8af9ce-5549-4caa-9362-a95d1e812693/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-09 10:44:10,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8af9ce-5549-4caa-9362-a95d1e812693/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 10:44:10,647 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 10:44:10,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:44:10,649 INFO L85 PathProgramCache]: Analyzing trace with hash 845201395, now seen corresponding path program 1 times [2021-11-09 10:44:10,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 10:44:10,650 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1668674661] [2021-11-09 10:44:10,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:44:10,651 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 10:44:10,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8af9ce-5549-4caa-9362-a95d1e812693/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 10:44:10,652 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8af9ce-5549-4caa-9362-a95d1e812693/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 10:44:10,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8af9ce-5549-4caa-9362-a95d1e812693/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-09 10:44:10,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:44:10,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-09 10:44:10,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:44:10,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:44:10,860 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 10:44:10,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:44:10,961 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 10:44:10,961 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1668674661] [2021-11-09 10:44:10,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1668674661] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 10:44:10,962 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:44:10,962 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-09 10:44:10,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593736201] [2021-11-09 10:44:10,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 10:44:10,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 10:44:10,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 10:44:10,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 10:44:10,966 INFO L87 Difference]: Start difference. First operand 32 states and 40 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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) [2021-11-09 10:44:13,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:44:13,423 INFO L93 Difference]: Finished difference Result 88 states and 111 transitions. [2021-11-09 10:44:13,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 10:44:13,424 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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 13 [2021-11-09 10:44:13,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:44:13,426 INFO L225 Difference]: With dead ends: 88 [2021-11-09 10:44:13,426 INFO L226 Difference]: Without dead ends: 68 [2021-11-09 10:44:13,427 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 10:44:13,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-11-09 10:44:13,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 38. [2021-11-09 10:44:13,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 36 states have (on average 1.2777777777777777) internal successors, (46), 37 states have internal predecessors, (46), 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) [2021-11-09 10:44:13,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2021-11-09 10:44:13,438 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 13 [2021-11-09 10:44:13,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:44:13,439 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2021-11-09 10:44:13,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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) [2021-11-09 10:44:13,440 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2021-11-09 10:44:13,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-09 10:44:13,441 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:44:13,441 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:44:13,463 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8af9ce-5549-4caa-9362-a95d1e812693/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-09 10:44:13,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8af9ce-5549-4caa-9362-a95d1e812693/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 10:44:13,658 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 10:44:13,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:44:13,659 INFO L85 PathProgramCache]: Analyzing trace with hash -1168948157, now seen corresponding path program 1 times [2021-11-09 10:44:13,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 10:44:13,661 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1277967473] [2021-11-09 10:44:13,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:44:13,661 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 10:44:13,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8af9ce-5549-4caa-9362-a95d1e812693/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 10:44:13,663 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8af9ce-5549-4caa-9362-a95d1e812693/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 10:44:13,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8af9ce-5549-4caa-9362-a95d1e812693/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-09 10:44:14,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:44:14,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-09 10:44:14,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:44:15,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:44:15,024 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 10:44:21,246 WARN L838 $PredicateComparison]: unable to prove that (fp.geq (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) c_ULTIMATE.start_main_~main__S~0) c_ULTIMATE.start_main_~main__E0~0) c_ULTIMATE.start_main_~main__E1~0) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10000.0))) is different from false [2021-11-09 10:44:23,297 WARN L860 $PredicateComparison]: unable to prove that (fp.geq (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) c_ULTIMATE.start_main_~main__S~0) c_ULTIMATE.start_main_~main__E0~0) c_ULTIMATE.start_main_~main__E1~0) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10000.0))) is different from true [2021-11-09 10:44:37,696 WARN L838 $PredicateComparison]: unable to prove that (or (fp.geq (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) c_ULTIMATE.start_main_~main__S~0) c_ULTIMATE.start_main_~main__E0~0) c_ULTIMATE.start_main_~main__E1~0) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10000.0))) (not (fp.leq c_ULTIMATE.start_main_~main__E0~0 ((_ to_fp 11 53) c_currentRoundingMode 1.0)))) is different from false [2021-11-09 10:44:39,744 WARN L860 $PredicateComparison]: unable to prove that (or (fp.geq (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) c_ULTIMATE.start_main_~main__S~0) c_ULTIMATE.start_main_~main__E0~0) c_ULTIMATE.start_main_~main__E1~0) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10000.0))) (not (fp.leq c_ULTIMATE.start_main_~main__E0~0 ((_ to_fp 11 53) c_currentRoundingMode 1.0)))) is different from true [2021-11-09 10:44:54,234 WARN L860 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_main_~main__E0~0 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (or (fp.geq (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) c_ULTIMATE.start_main_~main__S~0) ULTIMATE.start_main_~main__E0~0) c_ULTIMATE.start_main_~main__E1~0) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10000.0))) (not (fp.leq ULTIMATE.start_main_~main__E0~0 .cse0)) (not (fp.geq ULTIMATE.start_main_~main__E0~0 (fp.neg .cse0)))))) is different from true [2021-11-09 10:45:06,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:45:06,766 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 10:45:06,767 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1277967473] [2021-11-09 10:45:06,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1277967473] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 10:45:06,767 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:45:06,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2021-11-09 10:45:06,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555894692] [2021-11-09 10:45:06,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-09 10:45:06,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 10:45:06,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-09 10:45:06,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=30, Unknown=5, NotChecked=42, Total=110 [2021-11-09 10:45:06,771 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand has 11 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 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) [2021-11-09 10:45:09,233 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (and (forall ((ULTIMATE.start_main_~main__E0~0 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (or (fp.geq (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) c_ULTIMATE.start_main_~main__S~0) ULTIMATE.start_main_~main__E0~0) c_ULTIMATE.start_main_~main__E1~0) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10000.0))) (not (fp.leq ULTIMATE.start_main_~main__E0~0 .cse0)) (not (fp.geq ULTIMATE.start_main_~main__E0~0 (fp.neg .cse0)))))) (= .cse1 c_ULTIMATE.start_main_~main__E1~0) (= .cse1 c_ULTIMATE.start_main_~main__S~0) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-11-09 10:45:11,297 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (fp.geq c_ULTIMATE.start_main_~main__E0~0 (fp.neg .cse0)) (= .cse1 c_ULTIMATE.start_main_~main__E1~0) (= .cse1 c_ULTIMATE.start_main_~main__S~0) (or (fp.geq (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) c_ULTIMATE.start_main_~main__S~0) c_ULTIMATE.start_main_~main__E0~0) c_ULTIMATE.start_main_~main__E1~0) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10000.0))) (not (fp.leq c_ULTIMATE.start_main_~main__E0~0 .cse0))) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-11-09 10:45:13,363 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0)) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (and (fp.leq c_ULTIMATE.start_main_~main__E0~0 .cse0) (fp.geq c_ULTIMATE.start_main_~main__E0~0 (fp.neg .cse0)) (fp.geq (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) c_ULTIMATE.start_main_~main__S~0) c_ULTIMATE.start_main_~main__E0~0) c_ULTIMATE.start_main_~main__E1~0) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10000.0))) (= .cse1 c_ULTIMATE.start_main_~main__E1~0) (= .cse1 c_ULTIMATE.start_main_~main__S~0) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-11-09 10:45:16,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:45:16,713 INFO L93 Difference]: Finished difference Result 84 states and 103 transitions. [2021-11-09 10:45:16,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-09 10:45:16,715 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 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 13 [2021-11-09 10:45:16,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:45:16,716 INFO L225 Difference]: With dead ends: 84 [2021-11-09 10:45:16,716 INFO L226 Difference]: Without dead ends: 61 [2021-11-09 10:45:16,717 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 16.8s TimeCoverageRelationStatistics Valid=39, Invalid=33, Unknown=8, NotChecked=102, Total=182 [2021-11-09 10:45:16,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-11-09 10:45:16,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 30. [2021-11-09 10:45:16,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.2413793103448276) internal successors, (36), 29 states have internal predecessors, (36), 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) [2021-11-09 10:45:16,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2021-11-09 10:45:16,728 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 13 [2021-11-09 10:45:16,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:45:16,728 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2021-11-09 10:45:16,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 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) [2021-11-09 10:45:16,729 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2021-11-09 10:45:16,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-09 10:45:16,730 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:45:16,730 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:45:16,757 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8af9ce-5549-4caa-9362-a95d1e812693/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-09 10:45:16,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8af9ce-5549-4caa-9362-a95d1e812693/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 10:45:16,951 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 10:45:16,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:45:16,952 INFO L85 PathProgramCache]: Analyzing trace with hash 135134655, now seen corresponding path program 1 times [2021-11-09 10:45:16,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 10:45:16,952 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1384956920] [2021-11-09 10:45:16,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:45:16,953 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 10:45:16,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8af9ce-5549-4caa-9362-a95d1e812693/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 10:45:16,957 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8af9ce-5549-4caa-9362-a95d1e812693/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 10:45:16,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8af9ce-5549-4caa-9362-a95d1e812693/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-09 10:45:17,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:45:17,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-09 10:45:17,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:45:17,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:45:17,223 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 10:45:17,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:45:17,304 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 10:45:17,304 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1384956920] [2021-11-09 10:45:17,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1384956920] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 10:45:17,304 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:45:17,304 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-09 10:45:17,305 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839765233] [2021-11-09 10:45:17,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 10:45:17,305 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 10:45:17,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 10:45:17,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:45:17,306 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2021-11-09 10:45:17,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:45:17,337 INFO L93 Difference]: Finished difference Result 49 states and 60 transitions. [2021-11-09 10:45:17,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 10:45:17,337 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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 24 [2021-11-09 10:45:17,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:45:17,338 INFO L225 Difference]: With dead ends: 49 [2021-11-09 10:45:17,338 INFO L226 Difference]: Without dead ends: 29 [2021-11-09 10:45:17,339 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:45:17,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-11-09 10:45:17,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-11-09 10:45:17,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 28 states have internal predecessors, (33), 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) [2021-11-09 10:45:17,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2021-11-09 10:45:17,345 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 24 [2021-11-09 10:45:17,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:45:17,346 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2021-11-09 10:45:17,346 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2021-11-09 10:45:17,346 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2021-11-09 10:45:17,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-09 10:45:17,347 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:45:17,348 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:45:17,382 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8af9ce-5549-4caa-9362-a95d1e812693/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-09 10:45:17,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8af9ce-5549-4caa-9362-a95d1e812693/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 10:45:17,548 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 10:45:17,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:45:17,549 INFO L85 PathProgramCache]: Analyzing trace with hash -327957724, now seen corresponding path program 1 times [2021-11-09 10:45:17,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 10:45:17,549 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [376115785] [2021-11-09 10:45:17,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:45:17,550 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 10:45:17,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8af9ce-5549-4caa-9362-a95d1e812693/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 10:45:17,555 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8af9ce-5549-4caa-9362-a95d1e812693/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 10:45:17,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8af9ce-5549-4caa-9362-a95d1e812693/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-09 10:45:17,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:45:17,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-09 10:45:17,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:45:17,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:45:17,780 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 10:45:17,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:45:17,918 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 10:45:17,918 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [376115785] [2021-11-09 10:45:17,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [376115785] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 10:45:17,918 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:45:17,919 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-09 10:45:17,919 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644883309] [2021-11-09 10:45:17,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 10:45:17,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 10:45:17,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 10:45:17,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-09 10:45:17,921 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 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) [2021-11-09 10:45:18,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:45:18,127 INFO L93 Difference]: Finished difference Result 63 states and 73 transitions. [2021-11-09 10:45:18,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-09 10:45:18,128 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 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 24 [2021-11-09 10:45:18,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:45:18,129 INFO L225 Difference]: With dead ends: 63 [2021-11-09 10:45:18,129 INFO L226 Difference]: Without dead ends: 61 [2021-11-09 10:45:18,130 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-09 10:45:18,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-11-09 10:45:18,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 31. [2021-11-09 10:45:18,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.1666666666666667) internal successors, (35), 30 states have internal predecessors, (35), 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) [2021-11-09 10:45:18,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2021-11-09 10:45:18,152 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 24 [2021-11-09 10:45:18,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:45:18,152 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2021-11-09 10:45:18,153 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 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) [2021-11-09 10:45:18,153 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2021-11-09 10:45:18,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-09 10:45:18,154 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:45:18,154 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:45:18,174 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8af9ce-5549-4caa-9362-a95d1e812693/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-09 10:45:18,374 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8af9ce-5549-4caa-9362-a95d1e812693/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 10:45:18,375 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 10:45:18,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:45:18,375 INFO L85 PathProgramCache]: Analyzing trace with hash 401808482, now seen corresponding path program 1 times [2021-11-09 10:45:18,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 10:45:18,375 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [135393995] [2021-11-09 10:45:18,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:45:18,376 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 10:45:18,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8af9ce-5549-4caa-9362-a95d1e812693/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 10:45:18,378 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8af9ce-5549-4caa-9362-a95d1e812693/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 10:45:18,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8af9ce-5549-4caa-9362-a95d1e812693/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-09 10:45:18,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:45:19,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-09 10:45:19,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:46:00,063 WARN L838 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_main_~main__E1~0 (_ FloatingPoint 11 53)) (ULTIMATE.start_main_~main__E0~0 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (and (not (fp.geq (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 999.0 1000.0)) ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))) ULTIMATE.start_main_~main__E0~0) ULTIMATE.start_main_~main__E1~0) (fp.neg ((_ to_fp 11 53) roundNearestTiesToEven 10000.0)))) (fp.leq ULTIMATE.start_main_~main__E1~0 .cse0) (fp.geq ULTIMATE.start_main_~main__E0~0 (fp.neg .cse0))))) is different from false [2021-11-09 10:46:02,072 WARN L860 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_main_~main__E1~0 (_ FloatingPoint 11 53)) (ULTIMATE.start_main_~main__E0~0 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (and (not (fp.geq (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 999.0 1000.0)) ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))) ULTIMATE.start_main_~main__E0~0) ULTIMATE.start_main_~main__E1~0) (fp.neg ((_ to_fp 11 53) roundNearestTiesToEven 10000.0)))) (fp.leq ULTIMATE.start_main_~main__E1~0 .cse0) (fp.geq ULTIMATE.start_main_~main__E0~0 (fp.neg .cse0))))) is different from true [2021-11-09 10:46:54,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:46:54,558 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 10:47:02,796 WARN L838 $PredicateComparison]: unable to prove that (fp.geq (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) c_ULTIMATE.start_main_~main__S~0) c_ULTIMATE.start_main_~main__E0~0) c_ULTIMATE.start_main_~main__E1~0) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10000.0))) is different from false [2021-11-09 10:47:04,851 WARN L860 $PredicateComparison]: unable to prove that (fp.geq (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) c_ULTIMATE.start_main_~main__S~0) c_ULTIMATE.start_main_~main__E0~0) c_ULTIMATE.start_main_~main__E1~0) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10000.0))) is different from true [2021-11-09 10:47:19,322 WARN L838 $PredicateComparison]: unable to prove that (or (fp.geq (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) c_ULTIMATE.start_main_~main__S~0) c_ULTIMATE.start_main_~main__E0~0) c_ULTIMATE.start_main_~main__E1~0) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10000.0))) (not (fp.leq c_ULTIMATE.start_main_~main__E0~0 ((_ to_fp 11 53) c_currentRoundingMode 1.0)))) is different from false [2021-11-09 10:47:21,378 WARN L860 $PredicateComparison]: unable to prove that (or (fp.geq (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) c_ULTIMATE.start_main_~main__S~0) c_ULTIMATE.start_main_~main__E0~0) c_ULTIMATE.start_main_~main__E1~0) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10000.0))) (not (fp.leq c_ULTIMATE.start_main_~main__E0~0 ((_ to_fp 11 53) c_currentRoundingMode 1.0)))) is different from true [2021-11-09 10:47:35,902 WARN L860 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_main_~main__E0~0 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (or (fp.geq (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) c_ULTIMATE.start_main_~main__S~0) ULTIMATE.start_main_~main__E0~0) c_ULTIMATE.start_main_~main__E1~0) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10000.0))) (not (fp.leq ULTIMATE.start_main_~main__E0~0 .cse0)) (not (fp.geq ULTIMATE.start_main_~main__E0~0 (fp.neg .cse0)))))) is different from true [2021-11-09 10:49:05,252 WARN L860 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~main__E0~0_21 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (or (not (fp.geq v_ULTIMATE.start_main_~main__E0~0_21 (fp.neg .cse0))) (fp.geq (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) c_ULTIMATE.start_main_~main__S~0) v_ULTIMATE.start_main_~main__E0~0_21) c_ULTIMATE.start_main_~main__E0~0) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10000.0))) (not (fp.leq v_ULTIMATE.start_main_~main__E0~0_21 .cse0))))) is different from true [2021-11-09 10:49:25,817 WARN L860 $PredicateComparison]: unable to prove that (or (forall ((v_ULTIMATE.start_main_~main__E0~0_21 (_ FloatingPoint 11 53))) (or (not (fp.geq v_ULTIMATE.start_main_~main__E0~0_21 (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 1.0)))) (fp.geq (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) v_ULTIMATE.start_main_~main__E0~0_21) c_ULTIMATE.start_main_~main__E0~0) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10000.0))))) (not (fp.leq c_ULTIMATE.start_main_~main__E0~0 ((_ to_fp 11 53) c_currentRoundingMode 1.0)))) is different from true [2021-11-09 10:49:44,660 WARN L838 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_main_~main__E0~0 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (or (forall ((v_ULTIMATE.start_main_~main__E0~0_21 (_ FloatingPoint 11 53))) (or (not (fp.geq v_ULTIMATE.start_main_~main__E0~0_21 (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 1.0)))) (fp.geq (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) v_ULTIMATE.start_main_~main__E0~0_21) ULTIMATE.start_main_~main__E0~0) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10000.0))))) (not (fp.leq ULTIMATE.start_main_~main__E0~0 .cse0)) (not (fp.geq ULTIMATE.start_main_~main__E0~0 (fp.neg .cse0)))))) is different from false [2021-11-09 10:49:46,671 WARN L860 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_main_~main__E0~0 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (or (forall ((v_ULTIMATE.start_main_~main__E0~0_21 (_ FloatingPoint 11 53))) (or (not (fp.geq v_ULTIMATE.start_main_~main__E0~0_21 (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 1.0)))) (fp.geq (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) v_ULTIMATE.start_main_~main__E0~0_21) ULTIMATE.start_main_~main__E0~0) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10000.0))))) (not (fp.leq ULTIMATE.start_main_~main__E0~0 .cse0)) (not (fp.geq ULTIMATE.start_main_~main__E0~0 (fp.neg .cse0)))))) is different from true [2021-11-09 10:50:18,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:50:18,356 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 10:50:18,357 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [135393995] [2021-11-09 10:50:18,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [135393995] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 10:50:18,357 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:50:18,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 18 [2021-11-09 10:50:18,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002938591] [2021-11-09 10:50:18,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-09 10:50:18,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 10:50:18,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-09 10:50:18,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=84, Unknown=17, NotChecked=182, Total=342 [2021-11-09 10:50:18,360 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand has 19 states, 19 states have (on average 2.526315789473684) internal successors, (48), 18 states have internal predecessors, (48), 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) [2021-11-09 10:50:22,485 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((ULTIMATE.start_main_~main__E0~0 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (or (forall ((v_ULTIMATE.start_main_~main__E0~0_21 (_ FloatingPoint 11 53))) (or (not (fp.geq v_ULTIMATE.start_main_~main__E0~0_21 (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 1.0)))) (fp.geq (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) v_ULTIMATE.start_main_~main__E0~0_21) ULTIMATE.start_main_~main__E0~0) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10000.0))))) (not (fp.leq ULTIMATE.start_main_~main__E0~0 .cse0)) (not (fp.geq ULTIMATE.start_main_~main__E0~0 (fp.neg .cse0)))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-11-09 10:50:42,368 WARN L207 SmtUtils]: Spent 7.75 s on a formula simplification that was a NOOP. DAG size: 28 [2021-11-09 10:50:59,922 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (forall ((v_ULTIMATE.start_main_~main__E0~0_21 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (or (not (fp.geq v_ULTIMATE.start_main_~main__E0~0_21 (fp.neg .cse0))) (fp.geq (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) c_ULTIMATE.start_main_~main__S~0) v_ULTIMATE.start_main_~main__E0~0_21) c_ULTIMATE.start_main_~main__E0~0) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10000.0))) (not (fp.leq v_ULTIMATE.start_main_~main__E0~0_21 .cse0))))) (fp.leq c_ULTIMATE.start_main_~main__E0~0 .cse1) (forall ((v_ULTIMATE.start_main_~main__E0~0_21 (_ FloatingPoint 11 53))) (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (or (not (fp.geq v_ULTIMATE.start_main_~main__E0~0_21 (fp.neg .cse2))) (not (fp.leq v_ULTIMATE.start_main_~main__E0~0_21 .cse2)) (fp.geq (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) v_ULTIMATE.start_main_~main__E0~0_21) c_ULTIMATE.start_main_~main__E0~0) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10000.0)))))) (fp.geq c_ULTIMATE.start_main_~main__E0~0 (fp.neg .cse1)) (= ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)) c_ULTIMATE.start_main_~main__S~0) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-11-09 10:51:04,379 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (forall ((ULTIMATE.start_main_~main__E0~0 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (or (fp.geq (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) c_ULTIMATE.start_main_~main__S~0) ULTIMATE.start_main_~main__E0~0) c_ULTIMATE.start_main_~main__E1~0) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10000.0))) (not (fp.leq ULTIMATE.start_main_~main__E0~0 .cse0)) (not (fp.geq ULTIMATE.start_main_~main__E0~0 (fp.neg .cse0)))))) (fp.leq c_ULTIMATE.start_main_~main__E1~0 .cse1) (fp.geq c_ULTIMATE.start_main_~main__E1~0 (fp.neg .cse1)) (= ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)) c_ULTIMATE.start_main_~main__S~0) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-11-09 10:51:09,658 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse1 (fp.neg .cse0))) (and (fp.leq c_ULTIMATE.start_main_~main__E1~0 .cse0) (fp.geq c_ULTIMATE.start_main_~main__E1~0 .cse1) (fp.geq c_ULTIMATE.start_main_~main__E0~0 .cse1) (= ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)) c_ULTIMATE.start_main_~main__S~0) (or (fp.geq (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) c_ULTIMATE.start_main_~main__S~0) c_ULTIMATE.start_main_~main__E0~0) c_ULTIMATE.start_main_~main__E1~0) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10000.0))) (not (fp.leq c_ULTIMATE.start_main_~main__E0~0 .cse0))) (= c_currentRoundingMode roundNearestTiesToEven)))) is different from true [2021-11-09 10:51:14,183 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse1 (fp.neg .cse0))) (and (fp.leq c_ULTIMATE.start_main_~main__E1~0 .cse0) (fp.leq c_ULTIMATE.start_main_~main__E0~0 .cse0) (fp.geq c_ULTIMATE.start_main_~main__E1~0 .cse1) (fp.geq c_ULTIMATE.start_main_~main__E0~0 .cse1) (fp.geq (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) c_ULTIMATE.start_main_~main__S~0) c_ULTIMATE.start_main_~main__E0~0) c_ULTIMATE.start_main_~main__E1~0) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10000.0))) (= ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)) c_ULTIMATE.start_main_~main__S~0) (= c_currentRoundingMode roundNearestTiesToEven)))) is different from true [2021-11-09 10:52:02,302 WARN L207 SmtUtils]: Spent 5.07 s on a formula simplification that was a NOOP. DAG size: 28 [2021-11-09 10:52:21,453 WARN L207 SmtUtils]: Spent 14.40 s on a formula simplification that was a NOOP. DAG size: 38 [2021-11-09 10:52:42,380 WARN L207 SmtUtils]: Spent 7.30 s on a formula simplification that was a NOOP. DAG size: 30 [2021-11-09 10:52:54,745 WARN L207 SmtUtils]: Spent 7.09 s on a formula simplification that was a NOOP. DAG size: 33 [2021-11-09 10:53:00,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:53:00,911 INFO L93 Difference]: Finished difference Result 100 states and 113 transitions. [2021-11-09 10:53:00,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-09 10:53:00,922 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.526315789473684) internal successors, (48), 18 states have internal predecessors, (48), 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 24 [2021-11-09 10:53:00,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:53:00,923 INFO L225 Difference]: With dead ends: 100 [2021-11-09 10:53:00,923 INFO L226 Difference]: Without dead ends: 81 [2021-11-09 10:53:00,924 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 12 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 147.0s TimeCoverageRelationStatistics Valid=145, Invalid=251, Unknown=32, NotChecked=564, Total=992 [2021-11-09 10:53:00,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-11-09 10:53:00,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 64. [2021-11-09 10:53:00,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.1428571428571428) internal successors, (72), 63 states have internal predecessors, (72), 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) [2021-11-09 10:53:00,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 72 transitions. [2021-11-09 10:53:00,939 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 72 transitions. Word has length 24 [2021-11-09 10:53:00,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:53:00,940 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 72 transitions. [2021-11-09 10:53:00,940 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.526315789473684) internal successors, (48), 18 states have internal predecessors, (48), 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) [2021-11-09 10:53:00,940 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 72 transitions. [2021-11-09 10:53:00,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-09 10:53:00,941 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:53:00,942 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:53:00,962 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8af9ce-5549-4caa-9362-a95d1e812693/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-09 10:53:01,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8af9ce-5549-4caa-9362-a95d1e812693/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 10:53:01,161 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 10:53:01,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:53:01,161 INFO L85 PathProgramCache]: Analyzing trace with hash -2054568430, now seen corresponding path program 1 times [2021-11-09 10:53:01,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 10:53:01,162 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1277441368] [2021-11-09 10:53:01,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:53:01,162 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 10:53:01,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8af9ce-5549-4caa-9362-a95d1e812693/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 10:53:01,163 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8af9ce-5549-4caa-9362-a95d1e812693/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 10:53:01,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8af9ce-5549-4caa-9362-a95d1e812693/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-09 10:53:03,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:53:03,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-09 10:53:03,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:53:50,803 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((ULTIMATE.start_main_~main__E1~0 (_ FloatingPoint 11 53)) (ULTIMATE.start_main_~main__E0~0 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse3 (fp.neg .cse0))) (and (fp.leq ULTIMATE.start_main_~main__E1~0 .cse0) (= (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)))) (fp.mul c_currentRoundingMode .cse1 (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode .cse1 .cse2) ULTIMATE.start_main_~main__E1~0) .cse2)))) ULTIMATE.start_main_~main__E0~0) ULTIMATE.start_main_~main__E1~0) c_ULTIMATE.start_main_~main__S~0) (fp.leq ULTIMATE.start_main_~main__E0~0 .cse0) (fp.geq ULTIMATE.start_main_~main__E1~0 .cse3) (fp.geq ULTIMATE.start_main_~main__E0~0 .cse3))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-11-09 10:55:21,595 WARN L838 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_main_~main__E1~0 (_ FloatingPoint 11 53)) (ULTIMATE.start_main_~main__E0~0 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse3 (fp.neg .cse0))) (and (fp.leq ULTIMATE.start_main_~main__E0~0 .cse0) (not (fp.geq (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 999.0 1000.0)))) (fp.mul roundNearestTiesToEven .cse1 (let ((.cse2 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse1 .cse2) ULTIMATE.start_main_~main__E1~0) .cse2)))) ULTIMATE.start_main_~main__E0~0) ULTIMATE.start_main_~main__E1~0) (fp.neg ((_ to_fp 11 53) roundNearestTiesToEven 10000.0)))) (fp.leq ULTIMATE.start_main_~main__E1~0 .cse0) (fp.geq ULTIMATE.start_main_~main__E1~0 .cse3) (fp.geq ULTIMATE.start_main_~main__E0~0 .cse3))))) is different from false [2021-11-09 10:55:23,626 WARN L860 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_main_~main__E1~0 (_ FloatingPoint 11 53)) (ULTIMATE.start_main_~main__E0~0 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse3 (fp.neg .cse0))) (and (fp.leq ULTIMATE.start_main_~main__E0~0 .cse0) (not (fp.geq (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 999.0 1000.0)))) (fp.mul roundNearestTiesToEven .cse1 (let ((.cse2 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse1 .cse2) ULTIMATE.start_main_~main__E1~0) .cse2)))) ULTIMATE.start_main_~main__E0~0) ULTIMATE.start_main_~main__E1~0) (fp.neg ((_ to_fp 11 53) roundNearestTiesToEven 10000.0)))) (fp.leq ULTIMATE.start_main_~main__E1~0 .cse0) (fp.geq ULTIMATE.start_main_~main__E1~0 .cse3) (fp.geq ULTIMATE.start_main_~main__E0~0 .cse3))))) is different from true [2021-11-09 10:57:40,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:57:40,423 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 10:57:46,693 WARN L838 $PredicateComparison]: unable to prove that (fp.geq (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) c_ULTIMATE.start_main_~main__S~0) c_ULTIMATE.start_main_~main__E0~0) c_ULTIMATE.start_main_~main__E1~0) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10000.0))) is different from false [2021-11-09 10:57:48,746 WARN L860 $PredicateComparison]: unable to prove that (fp.geq (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) c_ULTIMATE.start_main_~main__S~0) c_ULTIMATE.start_main_~main__E0~0) c_ULTIMATE.start_main_~main__E1~0) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10000.0))) is different from true [2021-11-09 10:58:03,236 WARN L838 $PredicateComparison]: unable to prove that (or (fp.geq (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) c_ULTIMATE.start_main_~main__S~0) c_ULTIMATE.start_main_~main__E0~0) c_ULTIMATE.start_main_~main__E1~0) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10000.0))) (not (fp.leq c_ULTIMATE.start_main_~main__E0~0 ((_ to_fp 11 53) c_currentRoundingMode 1.0)))) is different from false [2021-11-09 10:58:05,293 WARN L860 $PredicateComparison]: unable to prove that (or (fp.geq (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) c_ULTIMATE.start_main_~main__S~0) c_ULTIMATE.start_main_~main__E0~0) c_ULTIMATE.start_main_~main__E1~0) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10000.0))) (not (fp.leq c_ULTIMATE.start_main_~main__E0~0 ((_ to_fp 11 53) c_currentRoundingMode 1.0)))) is different from true [2021-11-09 10:58:19,835 WARN L860 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_main_~main__E0~0 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (or (fp.geq (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) c_ULTIMATE.start_main_~main__S~0) ULTIMATE.start_main_~main__E0~0) c_ULTIMATE.start_main_~main__E1~0) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10000.0))) (not (fp.leq ULTIMATE.start_main_~main__E0~0 .cse0)) (not (fp.geq ULTIMATE.start_main_~main__E0~0 (fp.neg .cse0)))))) is different from true