./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1252a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7e70badd Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7fc0c7-e15e-4b92-abe8-33e76d73a66a/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7fc0c7-e15e-4b92-abe8-33e76d73a66a/bin/uautomizer-wIGwrQj20G/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7fc0c7-e15e-4b92-abe8-33e76d73a66a/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7fc0c7-e15e-4b92-abe8-33e76d73a66a/bin/uautomizer-wIGwrQj20G/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1252a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7fc0c7-e15e-4b92-abe8-33e76d73a66a/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7fc0c7-e15e-4b92-abe8-33e76d73a66a/bin/uautomizer-wIGwrQj20G --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 2743c9c1eae15f6a9812481781d831b3850f89be91644ec8a207d83f9a71b29e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 13:36:09,248 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 13:36:09,251 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 13:36:09,316 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 13:36:09,316 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 13:36:09,322 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 13:36:09,324 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 13:36:09,327 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 13:36:09,329 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 13:36:09,330 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 13:36:09,331 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 13:36:09,333 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 13:36:09,333 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 13:36:09,334 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 13:36:09,336 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 13:36:09,338 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 13:36:09,339 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 13:36:09,340 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 13:36:09,342 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 13:36:09,345 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 13:36:09,347 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 13:36:09,348 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 13:36:09,350 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 13:36:09,351 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 13:36:09,354 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 13:36:09,355 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 13:36:09,355 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 13:36:09,357 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 13:36:09,357 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 13:36:09,358 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 13:36:09,359 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 13:36:09,360 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 13:36:09,361 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 13:36:09,362 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 13:36:09,363 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 13:36:09,363 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 13:36:09,364 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 13:36:09,364 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 13:36:09,364 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 13:36:09,365 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 13:36:09,366 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 13:36:09,367 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7fc0c7-e15e-4b92-abe8-33e76d73a66a/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-23 13:36:09,393 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 13:36:09,393 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 13:36:09,393 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 13:36:09,393 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 13:36:09,395 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 13:36:09,395 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 13:36:09,395 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 13:36:09,395 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 13:36:09,396 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 13:36:09,396 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 13:36:09,396 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 13:36:09,396 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 13:36:09,396 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 13:36:09,397 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 13:36:09,397 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 13:36:09,397 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 13:36:09,397 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 13:36:09,400 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 13:36:09,400 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 13:36:09,400 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 13:36:09,400 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 13:36:09,401 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 13:36:09,401 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 13:36:09,401 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 13:36:09,401 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 13:36:09,402 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 13:36:09,402 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 13:36:09,402 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 13:36:09,403 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-23 13:36:09,403 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-23 13:36:09,404 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 13:36:09,404 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 13:36:09,404 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_fe7fc0c7-e15e-4b92-abe8-33e76d73a66a/bin/uautomizer-wIGwrQj20G/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7fc0c7-e15e-4b92-abe8-33e76d73a66a/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2743c9c1eae15f6a9812481781d831b3850f89be91644ec8a207d83f9a71b29e [2021-11-23 13:36:09,636 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 13:36:09,657 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 13:36:09,660 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 13:36:09,661 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 13:36:09,662 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 13:36:09,664 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7fc0c7-e15e-4b92-abe8-33e76d73a66a/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/float-newlib/double_req_bl_1252a.c [2021-11-23 13:36:09,729 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7fc0c7-e15e-4b92-abe8-33e76d73a66a/bin/uautomizer-wIGwrQj20G/data/065885841/c121ce22642a419491bad47e757278e4/FLAGc53d546e2 [2021-11-23 13:36:10,217 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 13:36:10,217 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7fc0c7-e15e-4b92-abe8-33e76d73a66a/sv-benchmarks/c/float-newlib/double_req_bl_1252a.c [2021-11-23 13:36:10,224 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7fc0c7-e15e-4b92-abe8-33e76d73a66a/bin/uautomizer-wIGwrQj20G/data/065885841/c121ce22642a419491bad47e757278e4/FLAGc53d546e2 [2021-11-23 13:36:10,581 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7fc0c7-e15e-4b92-abe8-33e76d73a66a/bin/uautomizer-wIGwrQj20G/data/065885841/c121ce22642a419491bad47e757278e4 [2021-11-23 13:36:10,585 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 13:36:10,586 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 13:36:10,590 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 13:36:10,590 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 13:36:10,593 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 13:36:10,594 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:36:10" (1/1) ... [2021-11-23 13:36:10,595 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44668154 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:36:10, skipping insertion in model container [2021-11-23 13:36:10,596 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:36:10" (1/1) ... [2021-11-23 13:36:10,604 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 13:36:10,621 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 13:36:10,841 WARN L230 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_fe7fc0c7-e15e-4b92-abe8-33e76d73a66a/sv-benchmarks/c/float-newlib/double_req_bl_1252a.c[2154,2167] [2021-11-23 13:36:10,844 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:36:10,851 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 13:36:10,875 WARN L230 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_fe7fc0c7-e15e-4b92-abe8-33e76d73a66a/sv-benchmarks/c/float-newlib/double_req_bl_1252a.c[2154,2167] [2021-11-23 13:36:10,876 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:36:10,889 INFO L208 MainTranslator]: Completed translation [2021-11-23 13:36:10,890 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:36:10 WrapperNode [2021-11-23 13:36:10,890 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 13:36:10,891 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 13:36:10,891 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 13:36:10,891 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 13:36:10,898 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:36:10" (1/1) ... [2021-11-23 13:36:10,907 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:36:10" (1/1) ... [2021-11-23 13:36:10,931 INFO L137 Inliner]: procedures = 18, calls = 20, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 129 [2021-11-23 13:36:10,932 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 13:36:10,933 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 13:36:10,933 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 13:36:10,933 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 13:36:10,941 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:36:10" (1/1) ... [2021-11-23 13:36:10,941 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:36:10" (1/1) ... [2021-11-23 13:36:10,944 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:36:10" (1/1) ... [2021-11-23 13:36:10,945 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:36:10" (1/1) ... [2021-11-23 13:36:10,972 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:36:10" (1/1) ... [2021-11-23 13:36:10,977 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:36:10" (1/1) ... [2021-11-23 13:36:10,979 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:36:10" (1/1) ... [2021-11-23 13:36:10,982 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 13:36:10,983 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 13:36:10,983 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 13:36:10,983 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 13:36:10,985 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:36:10" (1/1) ... [2021-11-23 13:36:10,992 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 13:36:11,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7fc0c7-e15e-4b92-abe8-33e76d73a66a/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:36:11,017 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7fc0c7-e15e-4b92-abe8-33e76d73a66a/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 13:36:11,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7fc0c7-e15e-4b92-abe8-33e76d73a66a/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 13:36:11,059 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 13:36:11,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 13:36:11,060 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 13:36:11,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-11-23 13:36:11,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 13:36:11,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 13:36:11,060 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 13:36:11,061 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 13:36:11,126 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 13:36:11,128 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 13:36:11,334 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 13:36:11,341 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 13:36:11,341 INFO L301 CfgBuilder]: Removed 6 assume(true) statements. [2021-11-23 13:36:11,343 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:36:11 BoogieIcfgContainer [2021-11-23 13:36:11,344 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 13:36:11,345 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 13:36:11,346 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 13:36:11,349 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 13:36:11,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:36:10" (1/3) ... [2021-11-23 13:36:11,350 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a441cf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:36:11, skipping insertion in model container [2021-11-23 13:36:11,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:36:10" (2/3) ... [2021-11-23 13:36:11,351 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a441cf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:36:11, skipping insertion in model container [2021-11-23 13:36:11,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:36:11" (3/3) ... [2021-11-23 13:36:11,353 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1252a.c [2021-11-23 13:36:11,358 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 13:36:11,359 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 13:36:11,408 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 13:36:11,415 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 [2021-11-23 13:36:11,416 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 13:36:11,431 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 30 states have (on average 1.6666666666666667) internal successors, (50), 31 states have internal predecessors, (50), 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) [2021-11-23 13:36:11,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-23 13:36:11,438 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:36:11,438 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:36:11,439 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:36:11,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:36:11,445 INFO L85 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2021-11-23 13:36:11,454 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:36:11,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008962162] [2021-11-23 13:36:11,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:36:11,456 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:36:11,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:36:11,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:36:11,631 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:36:11,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008962162] [2021-11-23 13:36:11,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008962162] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:36:11,633 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:36:11,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 13:36:11,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286860041] [2021-11-23 13:36:11,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:36:11,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 13:36:11,649 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:36:11,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 13:36:11,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 13:36:11,699 INFO L87 Difference]: Start difference. First operand has 32 states, 30 states have (on average 1.6666666666666667) internal successors, (50), 31 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:36:11,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:36:11,727 INFO L93 Difference]: Finished difference Result 62 states and 98 transitions. [2021-11-23 13:36:11,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 13:36:11,731 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-23 13:36:11,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:36:11,743 INFO L225 Difference]: With dead ends: 62 [2021-11-23 13:36:11,743 INFO L226 Difference]: Without dead ends: 29 [2021-11-23 13:36:11,747 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 13:36:11,757 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:36:11,759 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:36:11,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-11-23 13:36:11,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-11-23 13:36:11,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.4285714285714286) internal successors, (40), 28 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) [2021-11-23 13:36:11,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2021-11-23 13:36:11,809 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2021-11-23 13:36:11,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:36:11,809 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2021-11-23 13:36:11,809 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:36:11,810 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2021-11-23 13:36:11,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-23 13:36:11,811 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:36:11,811 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:36:11,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 13:36:11,812 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:36:11,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:36:11,818 INFO L85 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2021-11-23 13:36:11,818 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:36:11,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931943516] [2021-11-23 13:36:11,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:36:11,819 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:36:11,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:36:11,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:36:11,922 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:36:11,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931943516] [2021-11-23 13:36:11,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931943516] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:36:11,923 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:36:11,923 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 13:36:11,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928424718] [2021-11-23 13:36:11,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:36:11,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:36:11,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:36:11,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:36:11,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:36:11,927 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2021-11-23 13:36:11,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:36:11,980 INFO L93 Difference]: Finished difference Result 53 states and 67 transitions. [2021-11-23 13:36:11,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:36:11,981 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-23 13:36:11,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:36:11,983 INFO L225 Difference]: With dead ends: 53 [2021-11-23 13:36:11,983 INFO L226 Difference]: Without dead ends: 44 [2021-11-23 13:36:11,983 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:36:11,985 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 16 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:36:11,986 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 116 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:36:11,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-11-23 13:36:11,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 31. [2021-11-23 13:36:11,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.4) internal successors, (42), 30 states have internal predecessors, (42), 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) [2021-11-23 13:36:11,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2021-11-23 13:36:11,994 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2021-11-23 13:36:11,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:36:11,994 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2021-11-23 13:36:11,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2021-11-23 13:36:11,995 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2021-11-23 13:36:11,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-23 13:36:11,996 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:36:11,996 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:36:11,996 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 13:36:11,997 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:36:11,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:36:11,998 INFO L85 PathProgramCache]: Analyzing trace with hash 502201410, now seen corresponding path program 1 times [2021-11-23 13:36:11,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:36:11,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797990954] [2021-11-23 13:36:11,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:36:11,999 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:36:12,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:36:12,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:36:12,050 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:36:12,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797990954] [2021-11-23 13:36:12,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797990954] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:36:12,051 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:36:12,051 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 13:36:12,052 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238291925] [2021-11-23 13:36:12,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:36:12,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:36:12,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:36:12,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:36:12,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:36:12,054 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:36:12,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:36:12,099 INFO L93 Difference]: Finished difference Result 55 states and 69 transitions. [2021-11-23 13:36:12,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:36:12,100 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-23 13:36:12,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:36:12,101 INFO L225 Difference]: With dead ends: 55 [2021-11-23 13:36:12,101 INFO L226 Difference]: Without dead ends: 46 [2021-11-23 13:36:12,102 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:36:12,104 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 16 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:36:12,104 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 130 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:36:12,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-11-23 13:36:12,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 31. [2021-11-23 13:36:12,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.4) internal successors, (42), 30 states have internal predecessors, (42), 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) [2021-11-23 13:36:12,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2021-11-23 13:36:12,111 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 12 [2021-11-23 13:36:12,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:36:12,112 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2021-11-23 13:36:12,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:36:12,112 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2021-11-23 13:36:12,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-23 13:36:12,113 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:36:12,114 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:36:12,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 13:36:12,114 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:36:12,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:36:12,115 INFO L85 PathProgramCache]: Analyzing trace with hash -1951233721, now seen corresponding path program 1 times [2021-11-23 13:36:12,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:36:12,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989660472] [2021-11-23 13:36:12,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:36:12,116 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:36:12,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:36:12,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:36:12,163 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:36:12,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989660472] [2021-11-23 13:36:12,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989660472] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:36:12,164 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:36:12,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 13:36:12,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810488236] [2021-11-23 13:36:12,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:36:12,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:36:12,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:36:12,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:36:12,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:36:12,167 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 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) [2021-11-23 13:36:12,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:36:12,208 INFO L93 Difference]: Finished difference Result 55 states and 69 transitions. [2021-11-23 13:36:12,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:36:12,209 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 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 [2021-11-23 13:36:12,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:36:12,211 INFO L225 Difference]: With dead ends: 55 [2021-11-23 13:36:12,211 INFO L226 Difference]: Without dead ends: 46 [2021-11-23 13:36:12,211 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:36:12,213 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 16 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:36:12,214 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 130 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:36:12,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-11-23 13:36:12,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 31. [2021-11-23 13:36:12,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.4) internal successors, (42), 30 states have internal predecessors, (42), 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) [2021-11-23 13:36:12,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2021-11-23 13:36:12,223 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 13 [2021-11-23 13:36:12,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:36:12,224 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2021-11-23 13:36:12,224 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 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) [2021-11-23 13:36:12,224 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2021-11-23 13:36:12,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-23 13:36:12,225 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:36:12,225 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:36:12,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 13:36:12,225 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:36:12,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:36:12,226 INFO L85 PathProgramCache]: Analyzing trace with hash -555760345, now seen corresponding path program 1 times [2021-11-23 13:36:12,226 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:36:12,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943803382] [2021-11-23 13:36:12,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:36:12,227 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:36:12,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:36:12,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:36:12,317 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:36:12,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943803382] [2021-11-23 13:36:12,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943803382] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:36:12,317 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:36:12,317 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 13:36:12,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110574516] [2021-11-23 13:36:12,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:36:12,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:36:12,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:36:12,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:36:12,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:36:12,321 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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) [2021-11-23 13:36:12,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:36:12,398 INFO L93 Difference]: Finished difference Result 55 states and 69 transitions. [2021-11-23 13:36:12,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:36:12,401 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 14 [2021-11-23 13:36:12,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:36:12,402 INFO L225 Difference]: With dead ends: 55 [2021-11-23 13:36:12,403 INFO L226 Difference]: Without dead ends: 46 [2021-11-23 13:36:12,403 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:36:12,404 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 16 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:36:12,405 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 130 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:36:12,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-11-23 13:36:12,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 31. [2021-11-23 13:36:12,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.4) internal successors, (42), 30 states have internal predecessors, (42), 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) [2021-11-23 13:36:12,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2021-11-23 13:36:12,411 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 14 [2021-11-23 13:36:12,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:36:12,412 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2021-11-23 13:36:12,412 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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) [2021-11-23 13:36:12,412 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2021-11-23 13:36:12,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-23 13:36:12,413 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:36:12,413 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:36:12,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 13:36:12,414 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:36:12,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:36:12,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1219247017, now seen corresponding path program 1 times [2021-11-23 13:36:12,415 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:36:12,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417716797] [2021-11-23 13:36:12,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:36:12,416 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:36:12,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:36:12,441 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 13:36:12,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:36:12,477 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 13:36:12,477 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-23 13:36:12,479 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-23 13:36:12,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 13:36:12,491 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2021-11-23 13:36:12,494 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-23 13:36:12,543 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 01:36:12 BoogieIcfgContainer [2021-11-23 13:36:12,543 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-23 13:36:12,545 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 13:36:12,545 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 13:36:12,546 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 13:36:12,546 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:36:11" (3/4) ... [2021-11-23 13:36:12,550 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-23 13:36:12,550 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 13:36:12,553 INFO L158 Benchmark]: Toolchain (without parser) took 1963.94ms. Allocated memory was 102.8MB in the beginning and 123.7MB in the end (delta: 21.0MB). Free memory was 70.6MB in the beginning and 95.2MB in the end (delta: -24.6MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 13:36:12,554 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 102.8MB. Free memory was 57.7MB in the beginning and 57.7MB in the end (delta: 41.8kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 13:36:12,554 INFO L158 Benchmark]: CACSL2BoogieTranslator took 300.60ms. Allocated memory is still 102.8MB. Free memory was 70.4MB in the beginning and 76.6MB in the end (delta: -6.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 13:36:12,557 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.12ms. Allocated memory is still 102.8MB. Free memory was 76.6MB in the beginning and 74.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 13:36:12,557 INFO L158 Benchmark]: Boogie Preprocessor took 49.65ms. Allocated memory is still 102.8MB. Free memory was 74.6MB in the beginning and 73.2MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 13:36:12,558 INFO L158 Benchmark]: RCFGBuilder took 360.83ms. Allocated memory is still 102.8MB. Free memory was 73.2MB in the beginning and 60.3MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-23 13:36:12,559 INFO L158 Benchmark]: TraceAbstraction took 1197.97ms. Allocated memory was 102.8MB in the beginning and 123.7MB in the end (delta: 21.0MB). Free memory was 59.9MB in the beginning and 95.2MB in the end (delta: -35.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 13:36:12,559 INFO L158 Benchmark]: Witness Printer took 4.69ms. Allocated memory is still 123.7MB. Free memory is still 95.2MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 13:36:12,562 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 102.8MB. Free memory was 57.7MB in the beginning and 57.7MB in the end (delta: 41.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 300.60ms. Allocated memory is still 102.8MB. Free memory was 70.4MB in the beginning and 76.6MB in the end (delta: -6.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.12ms. Allocated memory is still 102.8MB. Free memory was 76.6MB in the beginning and 74.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 49.65ms. Allocated memory is still 102.8MB. Free memory was 74.6MB in the beginning and 73.2MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 360.83ms. Allocated memory is still 102.8MB. Free memory was 73.2MB in the beginning and 60.3MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 1197.97ms. Allocated memory was 102.8MB in the beginning and 123.7MB in the end (delta: 21.0MB). Free memory was 59.9MB in the beginning and 95.2MB in the end (delta: -35.3MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.69ms. Allocated memory is still 123.7MB. Free memory is still 95.2MB. There was no memory consumed. Max. memory is 16.1GB. * 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: 87]: 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 86, overapproximation of someUnaryDOUBLEoperation at line 81. Possible FailurePath: [L81] double x = -0.0; [L82] double y = 0.0; [L83] CALL, EXPR fmax_double(x, y) [L54] CALL, EXPR __fpclassify_double(x) [L26] __uint32_t msw, lsw; VAL [\old(x)=4294967298, x=4294967298] [L29] ieee_double_shape_type ew_u; [L30] ew_u.value = (x) [L31] EXPR ew_u.parts.msw [L31] (msw) = ew_u.parts.msw [L32] EXPR ew_u.parts.lsw [L32] (lsw) = ew_u.parts.lsw [L35-L36] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) VAL [\old(x)=4294967298, lsw=4294967297, msw=4293918721, x=4294967298] [L38-L39] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) VAL [\old(x)=4294967298, lsw=4294967297, msw=4293918721, x=4294967298] [L41-L42] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) VAL [\old(x)=4294967298, lsw=4294967297, msw=4293918721, x=4294967298] [L45-L46] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L49] return 0; VAL [\old(x)=4294967298, \result=0, lsw=4294967297, msw=4293918721, x=4294967298] [L54] RET, EXPR __fpclassify_double(x) [L54] COND TRUE __fpclassify_double(x) == 0 [L55] return y; VAL [\old(x)=4294967298, \old(y)=0, \result=0, x=4294967298, y=0] [L83] RET, EXPR fmax_double(x, y) [L83] double res = fmax_double(x, y); [L86] EXPR res == 0.0 && __signbit_double(res) == 0 VAL [res=0, res == 0.0 && __signbit_double(res) == 0=0, x=4294967298, y=0] [L86] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L87] reach_error() VAL [res=0, x=4294967298, y=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.1s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 64 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 64 mSDsluCounter, 549 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 298 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 86 IncrementalHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 251 mSDtfsCounter, 86 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, InterpolantAutomatonStates: 18, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 58 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 74 NumberOfCodeBlocks, 74 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 55 ConstructedInterpolants, 0 QuantifiedInterpolants, 71 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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 [2021-11-23 13:36:12,610 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7fc0c7-e15e-4b92-abe8-33e76d73a66a/bin/uautomizer-wIGwrQj20G/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_fe7fc0c7-e15e-4b92-abe8-33e76d73a66a/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7fc0c7-e15e-4b92-abe8-33e76d73a66a/bin/uautomizer-wIGwrQj20G/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7fc0c7-e15e-4b92-abe8-33e76d73a66a/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7fc0c7-e15e-4b92-abe8-33e76d73a66a/bin/uautomizer-wIGwrQj20G/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1252a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7fc0c7-e15e-4b92-abe8-33e76d73a66a/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7fc0c7-e15e-4b92-abe8-33e76d73a66a/bin/uautomizer-wIGwrQj20G --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 2743c9c1eae15f6a9812481781d831b3850f89be91644ec8a207d83f9a71b29e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 13:36:15,047 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 13:36:15,050 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 13:36:15,112 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 13:36:15,112 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 13:36:15,118 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 13:36:15,121 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 13:36:15,129 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 13:36:15,132 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 13:36:15,140 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 13:36:15,141 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 13:36:15,143 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 13:36:15,144 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 13:36:15,147 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 13:36:15,150 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 13:36:15,152 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 13:36:15,154 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 13:36:15,155 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 13:36:15,160 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 13:36:15,162 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 13:36:15,164 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 13:36:15,166 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 13:36:15,167 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 13:36:15,168 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 13:36:15,172 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 13:36:15,172 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 13:36:15,173 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 13:36:15,174 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 13:36:15,175 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 13:36:15,176 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 13:36:15,176 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 13:36:15,177 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 13:36:15,178 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 13:36:15,179 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 13:36:15,181 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 13:36:15,181 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 13:36:15,190 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 13:36:15,190 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 13:36:15,190 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 13:36:15,192 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 13:36:15,193 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 13:36:15,198 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7fc0c7-e15e-4b92-abe8-33e76d73a66a/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-11-23 13:36:15,234 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 13:36:15,235 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 13:36:15,235 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 13:36:15,235 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 13:36:15,237 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 13:36:15,237 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 13:36:15,237 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 13:36:15,238 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 13:36:15,238 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 13:36:15,238 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 13:36:15,238 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 13:36:15,239 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 13:36:15,239 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 13:36:15,239 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 13:36:15,239 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 13:36:15,240 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 13:36:15,240 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 13:36:15,240 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 13:36:15,240 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 13:36:15,241 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 13:36:15,241 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 13:36:15,241 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 13:36:15,241 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 13:36:15,242 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 13:36:15,242 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 13:36:15,242 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 13:36:15,242 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 13:36:15,243 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 13:36:15,243 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-23 13:36:15,243 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 13:36:15,243 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-23 13:36:15,244 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-23 13:36:15,244 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 13:36:15,244 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 13:36:15,244 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 13:36:15,245 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_fe7fc0c7-e15e-4b92-abe8-33e76d73a66a/bin/uautomizer-wIGwrQj20G/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7fc0c7-e15e-4b92-abe8-33e76d73a66a/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2743c9c1eae15f6a9812481781d831b3850f89be91644ec8a207d83f9a71b29e [2021-11-23 13:36:15,633 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 13:36:15,663 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 13:36:15,665 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 13:36:15,667 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 13:36:15,668 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 13:36:15,670 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7fc0c7-e15e-4b92-abe8-33e76d73a66a/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/float-newlib/double_req_bl_1252a.c [2021-11-23 13:36:15,743 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7fc0c7-e15e-4b92-abe8-33e76d73a66a/bin/uautomizer-wIGwrQj20G/data/2c8e1d012/7bd4a4a1e4d34e858541697e52707330/FLAG9d34eaedb [2021-11-23 13:36:16,239 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 13:36:16,243 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7fc0c7-e15e-4b92-abe8-33e76d73a66a/sv-benchmarks/c/float-newlib/double_req_bl_1252a.c [2021-11-23 13:36:16,252 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7fc0c7-e15e-4b92-abe8-33e76d73a66a/bin/uautomizer-wIGwrQj20G/data/2c8e1d012/7bd4a4a1e4d34e858541697e52707330/FLAG9d34eaedb [2021-11-23 13:36:16,602 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7fc0c7-e15e-4b92-abe8-33e76d73a66a/bin/uautomizer-wIGwrQj20G/data/2c8e1d012/7bd4a4a1e4d34e858541697e52707330 [2021-11-23 13:36:16,606 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 13:36:16,609 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 13:36:16,612 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 13:36:16,612 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 13:36:16,617 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 13:36:16,618 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:36:16" (1/1) ... [2021-11-23 13:36:16,621 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e25941d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:36:16, skipping insertion in model container [2021-11-23 13:36:16,621 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:36:16" (1/1) ... [2021-11-23 13:36:16,629 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 13:36:16,644 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 13:36:16,854 WARN L230 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_fe7fc0c7-e15e-4b92-abe8-33e76d73a66a/sv-benchmarks/c/float-newlib/double_req_bl_1252a.c[2154,2167] [2021-11-23 13:36:16,858 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:36:16,870 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 13:36:16,895 WARN L230 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_fe7fc0c7-e15e-4b92-abe8-33e76d73a66a/sv-benchmarks/c/float-newlib/double_req_bl_1252a.c[2154,2167] [2021-11-23 13:36:16,896 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:36:16,925 INFO L208 MainTranslator]: Completed translation [2021-11-23 13:36:16,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:36:16 WrapperNode [2021-11-23 13:36:16,926 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 13:36:16,927 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 13:36:16,927 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 13:36:16,928 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 13:36:16,937 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:36:16" (1/1) ... [2021-11-23 13:36:16,959 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:36:16" (1/1) ... [2021-11-23 13:36:16,985 INFO L137 Inliner]: procedures = 21, calls = 20, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 127 [2021-11-23 13:36:16,986 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 13:36:16,986 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 13:36:16,987 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 13:36:16,987 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 13:36:16,994 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:36:16" (1/1) ... [2021-11-23 13:36:16,994 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:36:16" (1/1) ... [2021-11-23 13:36:17,002 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:36:16" (1/1) ... [2021-11-23 13:36:17,002 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:36:16" (1/1) ... [2021-11-23 13:36:17,011 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:36:16" (1/1) ... [2021-11-23 13:36:17,016 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:36:16" (1/1) ... [2021-11-23 13:36:17,019 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:36:16" (1/1) ... [2021-11-23 13:36:17,023 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 13:36:17,024 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 13:36:17,024 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 13:36:17,024 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 13:36:17,025 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:36:16" (1/1) ... [2021-11-23 13:36:17,032 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 13:36:17,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7fc0c7-e15e-4b92-abe8-33e76d73a66a/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:36:17,059 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7fc0c7-e15e-4b92-abe8-33e76d73a66a/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 13:36:17,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7fc0c7-e15e-4b92-abe8-33e76d73a66a/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 13:36:17,103 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 13:36:17,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2021-11-23 13:36:17,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 13:36:17,103 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 13:36:17,104 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-23 13:36:17,104 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 13:36:17,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 13:36:17,104 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 13:36:17,181 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 13:36:17,183 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 13:36:17,436 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 13:36:17,443 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 13:36:17,443 INFO L301 CfgBuilder]: Removed 6 assume(true) statements. [2021-11-23 13:36:17,445 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:36:17 BoogieIcfgContainer [2021-11-23 13:36:17,445 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 13:36:17,447 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 13:36:17,447 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 13:36:17,450 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 13:36:17,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:36:16" (1/3) ... [2021-11-23 13:36:17,451 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7936045b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:36:17, skipping insertion in model container [2021-11-23 13:36:17,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:36:16" (2/3) ... [2021-11-23 13:36:17,452 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7936045b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:36:17, skipping insertion in model container [2021-11-23 13:36:17,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:36:17" (3/3) ... [2021-11-23 13:36:17,453 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1252a.c [2021-11-23 13:36:17,459 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 13:36:17,460 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 13:36:17,512 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 13:36:17,520 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 [2021-11-23 13:36:17,520 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 13:36:17,537 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 30 states have (on average 1.6666666666666667) internal successors, (50), 31 states have internal predecessors, (50), 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) [2021-11-23 13:36:17,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-23 13:36:17,544 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:36:17,545 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:36:17,545 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:36:17,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:36:17,552 INFO L85 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2021-11-23 13:36:17,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:36:17,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [663887540] [2021-11-23 13:36:17,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:36:17,566 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:36:17,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7fc0c7-e15e-4b92-abe8-33e76d73a66a/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:36:17,569 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7fc0c7-e15e-4b92-abe8-33e76d73a66a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:36:17,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7fc0c7-e15e-4b92-abe8-33e76d73a66a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 13:36:17,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:36:17,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-23 13:36:17,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:36:17,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:36:17,747 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:36:17,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:36:17,781 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:36:17,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [663887540] [2021-11-23 13:36:17,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [663887540] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:36:17,789 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:36:17,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-23 13:36:17,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911920835] [2021-11-23 13:36:17,794 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:36:17,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 13:36:17,801 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:36:17,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 13:36:17,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 13:36:17,851 INFO L87 Difference]: Start difference. First operand has 32 states, 30 states have (on average 1.6666666666666667) internal successors, (50), 31 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:36:17,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:36:17,880 INFO L93 Difference]: Finished difference Result 62 states and 98 transitions. [2021-11-23 13:36:17,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 13:36:17,884 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-23 13:36:17,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:36:17,896 INFO L225 Difference]: With dead ends: 62 [2021-11-23 13:36:17,896 INFO L226 Difference]: Without dead ends: 29 [2021-11-23 13:36:17,900 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 13:36:17,905 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:36:17,907 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:36:17,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-11-23 13:36:17,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-11-23 13:36:17,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.4285714285714286) internal successors, (40), 28 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) [2021-11-23 13:36:17,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2021-11-23 13:36:17,950 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2021-11-23 13:36:17,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:36:17,951 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2021-11-23 13:36:17,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:36:17,952 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2021-11-23 13:36:17,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-23 13:36:17,953 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:36:17,954 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:36:17,970 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7fc0c7-e15e-4b92-abe8-33e76d73a66a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-23 13:36:18,166 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7fc0c7-e15e-4b92-abe8-33e76d73a66a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:36:18,166 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:36:18,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:36:18,170 INFO L85 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2021-11-23 13:36:18,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:36:18,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [873228436] [2021-11-23 13:36:18,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:36:18,175 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:36:18,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7fc0c7-e15e-4b92-abe8-33e76d73a66a/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:36:18,177 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7fc0c7-e15e-4b92-abe8-33e76d73a66a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:36:18,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7fc0c7-e15e-4b92-abe8-33e76d73a66a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-23 13:36:18,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:36:18,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 13:36:18,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:36:18,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:36:18,360 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:36:18,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:36:18,428 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:36:18,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [873228436] [2021-11-23 13:36:18,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [873228436] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:36:18,429 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:36:18,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-23 13:36:18,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903906166] [2021-11-23 13:36:18,430 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:36:18,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 13:36:18,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:36:18,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 13:36:18,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-23 13:36:18,434 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 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) [2021-11-23 13:36:18,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:36:18,571 INFO L93 Difference]: Finished difference Result 68 states and 85 transitions. [2021-11-23 13:36:18,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 13:36:18,572 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-23 13:36:18,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:36:18,574 INFO L225 Difference]: With dead ends: 68 [2021-11-23 13:36:18,574 INFO L226 Difference]: Without dead ends: 59 [2021-11-23 13:36:18,575 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 13:36:18,578 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 32 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:36:18,579 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 151 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:36:18,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-11-23 13:36:18,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 31. [2021-11-23 13:36:18,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.4) internal successors, (42), 30 states have internal predecessors, (42), 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) [2021-11-23 13:36:18,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2021-11-23 13:36:18,593 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2021-11-23 13:36:18,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:36:18,594 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2021-11-23 13:36:18,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 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) [2021-11-23 13:36:18,594 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2021-11-23 13:36:18,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-23 13:36:18,597 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:36:18,597 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:36:18,614 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7fc0c7-e15e-4b92-abe8-33e76d73a66a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-23 13:36:18,813 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7fc0c7-e15e-4b92-abe8-33e76d73a66a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:36:18,814 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:36:18,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:36:18,815 INFO L85 PathProgramCache]: Analyzing trace with hash 1219247017, now seen corresponding path program 1 times [2021-11-23 13:36:18,815 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:36:18,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2091917276] [2021-11-23 13:36:18,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:36:18,816 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:36:18,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7fc0c7-e15e-4b92-abe8-33e76d73a66a/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:36:18,818 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7fc0c7-e15e-4b92-abe8-33e76d73a66a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:36:18,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7fc0c7-e15e-4b92-abe8-33e76d73a66a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-23 13:36:18,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:36:18,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-23 13:36:18,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:36:19,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:36:19,094 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:36:19,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:36:19,253 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:36:19,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2091917276] [2021-11-23 13:36:19,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2091917276] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:36:19,255 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:36:19,255 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-23 13:36:19,259 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507613564] [2021-11-23 13:36:19,259 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:36:19,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 13:36:19,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:36:19,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 13:36:19,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-23 13:36:19,264 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:36:19,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:36:19,337 INFO L93 Difference]: Finished difference Result 52 states and 69 transitions. [2021-11-23 13:36:19,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 13:36:19,338 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-23 13:36:19,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:36:19,339 INFO L225 Difference]: With dead ends: 52 [2021-11-23 13:36:19,339 INFO L226 Difference]: Without dead ends: 28 [2021-11-23 13:36:19,341 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-23 13:36:19,345 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 4 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 18 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:36:19,347 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 92 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 18 Unchecked, 0.0s Time] [2021-11-23 13:36:19,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-11-23 13:36:19,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-11-23 13:36:19,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.3333333333333333) internal successors, (36), 27 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) [2021-11-23 13:36:19,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 36 transitions. [2021-11-23 13:36:19,362 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 36 transitions. Word has length 14 [2021-11-23 13:36:19,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:36:19,363 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 36 transitions. [2021-11-23 13:36:19,363 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:36:19,364 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 36 transitions. [2021-11-23 13:36:19,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-23 13:36:19,366 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:36:19,366 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:36:19,379 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7fc0c7-e15e-4b92-abe8-33e76d73a66a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-23 13:36:19,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7fc0c7-e15e-4b92-abe8-33e76d73a66a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:36:19,579 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:36:19,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:36:19,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1012446717, now seen corresponding path program 1 times [2021-11-23 13:36:19,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:36:19,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [268218444] [2021-11-23 13:36:19,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:36:19,581 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:36:19,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7fc0c7-e15e-4b92-abe8-33e76d73a66a/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:36:19,582 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7fc0c7-e15e-4b92-abe8-33e76d73a66a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:36:19,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7fc0c7-e15e-4b92-abe8-33e76d73a66a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-23 13:36:19,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:36:19,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 13:36:19,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:36:19,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:36:19,723 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:36:19,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:36:19,791 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:36:19,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [268218444] [2021-11-23 13:36:19,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [268218444] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:36:19,794 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:36:19,794 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-23 13:36:19,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136098528] [2021-11-23 13:36:19,796 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:36:19,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 13:36:19,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:36:19,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 13:36:19,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-23 13:36:19,798 INFO L87 Difference]: Start difference. First operand 28 states and 36 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 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) [2021-11-23 13:36:19,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:36:19,887 INFO L93 Difference]: Finished difference Result 65 states and 77 transitions. [2021-11-23 13:36:19,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 13:36:19,888 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 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 16 [2021-11-23 13:36:19,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:36:19,890 INFO L225 Difference]: With dead ends: 65 [2021-11-23 13:36:19,891 INFO L226 Difference]: Without dead ends: 56 [2021-11-23 13:36:19,892 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 13:36:19,895 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 42 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:36:19,896 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 131 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:36:19,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-11-23 13:36:19,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 30. [2021-11-23 13:36:19,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 29 states have internal predecessors, (38), 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) [2021-11-23 13:36:19,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 38 transitions. [2021-11-23 13:36:19,905 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 38 transitions. Word has length 16 [2021-11-23 13:36:19,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:36:19,905 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 38 transitions. [2021-11-23 13:36:19,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 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) [2021-11-23 13:36:19,906 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 38 transitions. [2021-11-23 13:36:19,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-23 13:36:19,907 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:36:19,907 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:36:19,923 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7fc0c7-e15e-4b92-abe8-33e76d73a66a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-23 13:36:20,120 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7fc0c7-e15e-4b92-abe8-33e76d73a66a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:36:20,120 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:36:20,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:36:20,121 INFO L85 PathProgramCache]: Analyzing trace with hash -414082333, now seen corresponding path program 1 times [2021-11-23 13:36:20,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:36:20,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1942665021] [2021-11-23 13:36:20,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:36:20,122 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:36:20,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7fc0c7-e15e-4b92-abe8-33e76d73a66a/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:36:20,123 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7fc0c7-e15e-4b92-abe8-33e76d73a66a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:36:20,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7fc0c7-e15e-4b92-abe8-33e76d73a66a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-23 13:36:20,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:36:20,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 13:36:20,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:36:20,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:36:20,312 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:36:20,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:36:20,491 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:36:20,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1942665021] [2021-11-23 13:36:20,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1942665021] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:36:20,491 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:36:20,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-23 13:36:20,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157525375] [2021-11-23 13:36:20,492 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:36:20,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:36:20,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:36:20,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:36:20,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:36:20,493 INFO L87 Difference]: Start difference. First operand 30 states and 38 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 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) [2021-11-23 13:36:20,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:36:20,507 INFO L93 Difference]: Finished difference Result 40 states and 48 transitions. [2021-11-23 13:36:20,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:36:20,508 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 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 18 [2021-11-23 13:36:20,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:36:20,509 INFO L225 Difference]: With dead ends: 40 [2021-11-23 13:36:20,509 INFO L226 Difference]: Without dead ends: 30 [2021-11-23 13:36:20,509 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:36:20,511 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 23 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:36:20,511 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 34 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:36:20,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-11-23 13:36:20,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-11-23 13:36:20,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 29 states have internal predecessors, (37), 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) [2021-11-23 13:36:20,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2021-11-23 13:36:20,516 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 18 [2021-11-23 13:36:20,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:36:20,517 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2021-11-23 13:36:20,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 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) [2021-11-23 13:36:20,517 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2021-11-23 13:36:20,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-23 13:36:20,518 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:36:20,518 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:36:20,535 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7fc0c7-e15e-4b92-abe8-33e76d73a66a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-23 13:36:20,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7fc0c7-e15e-4b92-abe8-33e76d73a66a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:36:20,736 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:36:20,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:36:20,736 INFO L85 PathProgramCache]: Analyzing trace with hash -356824031, now seen corresponding path program 1 times [2021-11-23 13:36:20,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:36:20,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1408205790] [2021-11-23 13:36:20,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:36:20,737 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:36:20,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7fc0c7-e15e-4b92-abe8-33e76d73a66a/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:36:20,738 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7fc0c7-e15e-4b92-abe8-33e76d73a66a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:36:20,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7fc0c7-e15e-4b92-abe8-33e76d73a66a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-23 13:36:20,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:36:20,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 13:36:20,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:36:20,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:36:20,988 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:36:21,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:36:21,086 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:36:21,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1408205790] [2021-11-23 13:36:21,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1408205790] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:36:21,086 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:36:21,086 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2021-11-23 13:36:21,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158419210] [2021-11-23 13:36:21,087 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:36:21,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-23 13:36:21,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:36:21,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-23 13:36:21,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-23 13:36:21,088 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 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) [2021-11-23 13:36:21,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:36:21,194 INFO L93 Difference]: Finished difference Result 42 states and 48 transitions. [2021-11-23 13:36:21,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 13:36:21,195 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 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 18 [2021-11-23 13:36:21,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:36:21,196 INFO L225 Difference]: With dead ends: 42 [2021-11-23 13:36:21,196 INFO L226 Difference]: Without dead ends: 39 [2021-11-23 13:36:21,196 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2021-11-23 13:36:21,197 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 51 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:36:21,198 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 149 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:36:21,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-11-23 13:36:21,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 32. [2021-11-23 13:36:21,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.2580645161290323) internal successors, (39), 31 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:36:21,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2021-11-23 13:36:21,203 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 18 [2021-11-23 13:36:21,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:36:21,204 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2021-11-23 13:36:21,204 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 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) [2021-11-23 13:36:21,204 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2021-11-23 13:36:21,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-23 13:36:21,205 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:36:21,205 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:36:21,221 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7fc0c7-e15e-4b92-abe8-33e76d73a66a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-23 13:36:21,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7fc0c7-e15e-4b92-abe8-33e76d73a66a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:36:21,406 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:36:21,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:36:21,407 INFO L85 PathProgramCache]: Analyzing trace with hash -208358251, now seen corresponding path program 1 times [2021-11-23 13:36:21,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:36:21,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1123657215] [2021-11-23 13:36:21,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:36:21,408 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:36:21,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7fc0c7-e15e-4b92-abe8-33e76d73a66a/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:36:21,410 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7fc0c7-e15e-4b92-abe8-33e76d73a66a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:36:21,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7fc0c7-e15e-4b92-abe8-33e76d73a66a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-23 13:36:21,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:36:21,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-23 13:36:21,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:36:21,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:36:21,619 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:36:21,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:36:21,770 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:36:21,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1123657215] [2021-11-23 13:36:21,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1123657215] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:36:21,770 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:36:21,771 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-23 13:36:21,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077180372] [2021-11-23 13:36:21,771 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:36:21,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 13:36:21,772 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:36:21,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 13:36:21,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-23 13:36:21,773 INFO L87 Difference]: Start difference. First operand 32 states and 39 transitions. Second operand has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 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) [2021-11-23 13:36:21,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:36:21,838 INFO L93 Difference]: Finished difference Result 45 states and 51 transitions. [2021-11-23 13:36:21,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 13:36:21,840 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 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 19 [2021-11-23 13:36:21,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:36:21,840 INFO L225 Difference]: With dead ends: 45 [2021-11-23 13:36:21,841 INFO L226 Difference]: Without dead ends: 27 [2021-11-23 13:36:21,841 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-23 13:36:21,842 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 11 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 8 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:36:21,842 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 82 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 8 Unchecked, 0.0s Time] [2021-11-23 13:36:21,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-11-23 13:36:21,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-11-23 13:36:21,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.1538461538461537) internal successors, (30), 26 states have internal predecessors, (30), 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) [2021-11-23 13:36:21,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2021-11-23 13:36:21,846 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 19 [2021-11-23 13:36:21,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:36:21,846 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2021-11-23 13:36:21,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 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) [2021-11-23 13:36:21,847 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2021-11-23 13:36:21,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-23 13:36:21,848 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:36:21,848 INFO L514 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] [2021-11-23 13:36:21,859 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7fc0c7-e15e-4b92-abe8-33e76d73a66a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-23 13:36:22,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7fc0c7-e15e-4b92-abe8-33e76d73a66a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:36:22,055 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:36:22,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:36:22,056 INFO L85 PathProgramCache]: Analyzing trace with hash -1524231306, now seen corresponding path program 1 times [2021-11-23 13:36:22,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:36:22,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1895708657] [2021-11-23 13:36:22,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:36:22,057 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:36:22,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7fc0c7-e15e-4b92-abe8-33e76d73a66a/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:36:22,060 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7fc0c7-e15e-4b92-abe8-33e76d73a66a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:36:22,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7fc0c7-e15e-4b92-abe8-33e76d73a66a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-23 13:36:22,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:36:22,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-23 13:36:22,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:36:22,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:36:22,365 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:36:22,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:36:22,853 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:36:22,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1895708657] [2021-11-23 13:36:22,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1895708657] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:36:22,853 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:36:22,853 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 16 [2021-11-23 13:36:22,853 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408986482] [2021-11-23 13:36:22,854 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:36:22,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-23 13:36:22,854 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:36:22,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-23 13:36:22,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2021-11-23 13:36:22,855 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 16 states, 16 states have (on average 2.5) internal successors, (40), 16 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) [2021-11-23 13:36:23,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:36:23,019 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2021-11-23 13:36:23,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-23 13:36:23,019 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.5) internal successors, (40), 16 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) Word has length 22 [2021-11-23 13:36:23,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:36:23,019 INFO L225 Difference]: With dead ends: 27 [2021-11-23 13:36:23,019 INFO L226 Difference]: Without dead ends: 0 [2021-11-23 13:36:23,020 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2021-11-23 13:36:23,021 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 40 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 27 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:36:23,021 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 172 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 27 Unchecked, 0.0s Time] [2021-11-23 13:36:23,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-23 13:36:23,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-23 13:36:23,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:36:23,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-23 13:36:23,022 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2021-11-23 13:36:23,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:36:23,023 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-23 13:36:23,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.5) internal successors, (40), 16 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) [2021-11-23 13:36:23,023 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-23 13:36:23,023 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-23 13:36:23,026 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-23 13:36:23,047 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7fc0c7-e15e-4b92-abe8-33e76d73a66a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-23 13:36:23,242 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7fc0c7-e15e-4b92-abe8-33e76d73a66a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:36:23,244 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-23 13:36:23,386 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-23 13:36:23,386 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-23 13:36:23,387 INFO L858 garLoopResultBuilder]: For program point L28-1(lines 28 33) no Hoare annotation was computed. [2021-11-23 13:36:23,387 INFO L854 garLoopResultBuilder]: At program point L28-2(lines 28 33) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 11 53)))) (and (= |ULTIMATE.start_fmax_double_~x#1| .cse0) (= |ULTIMATE.start___fpclassify_double_~x#1| .cse0) (= (_ +zero 11 53) |ULTIMATE.start_fmax_double_~y#1|))) [2021-11-23 13:36:23,387 INFO L858 garLoopResultBuilder]: For program point L28-3(lines 25 50) no Hoare annotation was computed. [2021-11-23 13:36:23,387 INFO L858 garLoopResultBuilder]: For program point L28-5(lines 28 33) no Hoare annotation was computed. [2021-11-23 13:36:23,387 INFO L854 garLoopResultBuilder]: At program point L28-6(lines 28 33) the Hoare annotation is: (and (= |ULTIMATE.start_fmax_double_~x#1| (fp.neg (_ +zero 11 53))) (= (_ +zero 11 53) |ULTIMATE.start_fmax_double_~y#1|) (= (_ +zero 11 53) |ULTIMATE.start___fpclassify_double_~x#1|)) [2021-11-23 13:36:23,387 INFO L858 garLoopResultBuilder]: For program point L86(line 86) no Hoare annotation was computed. [2021-11-23 13:36:23,387 INFO L858 garLoopResultBuilder]: For program point L28-7(lines 25 50) no Hoare annotation was computed. [2021-11-23 13:36:23,387 INFO L858 garLoopResultBuilder]: For program point L86-2(lines 86 89) no Hoare annotation was computed. [2021-11-23 13:36:23,388 INFO L858 garLoopResultBuilder]: For program point L45(lines 45 49) no Hoare annotation was computed. [2021-11-23 13:36:23,388 INFO L858 garLoopResultBuilder]: For program point L45-1(lines 45 49) no Hoare annotation was computed. [2021-11-23 13:36:23,388 INFO L858 garLoopResultBuilder]: For program point L87(line 87) no Hoare annotation was computed. [2021-11-23 13:36:23,388 INFO L858 garLoopResultBuilder]: For program point L54(lines 54 55) no Hoare annotation was computed. [2021-11-23 13:36:23,388 INFO L854 garLoopResultBuilder]: At program point L71(lines 62 72) the Hoare annotation is: (and (= |ULTIMATE.start_fmax_double_~x#1| (fp.neg (_ +zero 11 53))) |ULTIMATE.start_main_#t~short12#1| (= (_ +zero 11 53) |ULTIMATE.start_fmax_double_~y#1|) (= (_ bv0 32) |ULTIMATE.start___signbit_double_#res#1|)) [2021-11-23 13:36:23,388 INFO L858 garLoopResultBuilder]: For program point L38(lines 38 49) no Hoare annotation was computed. [2021-11-23 13:36:23,388 INFO L858 garLoopResultBuilder]: For program point L38-1(lines 38 49) no Hoare annotation was computed. [2021-11-23 13:36:23,388 INFO L858 garLoopResultBuilder]: For program point L56(lines 56 57) no Hoare annotation was computed. [2021-11-23 13:36:23,388 INFO L858 garLoopResultBuilder]: For program point L65-1(lines 65 69) no Hoare annotation was computed. [2021-11-23 13:36:23,388 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-11-23 13:36:23,389 INFO L854 garLoopResultBuilder]: At program point L65-2(lines 65 69) the Hoare annotation is: (and (= |ULTIMATE.start_fmax_double_~x#1| (fp.neg (_ +zero 11 53))) |ULTIMATE.start_main_#t~short12#1| (= (_ +zero 11 53) |ULTIMATE.start_fmax_double_~y#1|) (= |ULTIMATE.start_main_~res~0#1| (_ +zero 11 53)) (= (_ +zero 11 53) |ULTIMATE.start_fmax_double_#res#1|) (= (_ +zero 11 53) |ULTIMATE.start___signbit_double_~x#1|)) [2021-11-23 13:36:23,389 INFO L858 garLoopResultBuilder]: For program point L65-3(lines 65 69) no Hoare annotation was computed. [2021-11-23 13:36:23,389 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 87) no Hoare annotation was computed. [2021-11-23 13:36:23,389 INFO L854 garLoopResultBuilder]: At program point L49(lines 25 50) the Hoare annotation is: (and (= |ULTIMATE.start_fmax_double_~x#1| (fp.neg (_ +zero 11 53))) (= (_ +zero 11 53) |ULTIMATE.start_fmax_double_~y#1|) (not (= |ULTIMATE.start___fpclassify_double_#res#1| (_ bv0 32)))) [2021-11-23 13:36:23,389 INFO L854 garLoopResultBuilder]: At program point L49-1(lines 25 50) the Hoare annotation is: (and (= |ULTIMATE.start_fmax_double_~x#1| (fp.neg (_ +zero 11 53))) (= (_ +zero 11 53) |ULTIMATE.start_fmax_double_~y#1|) (not (= |ULTIMATE.start___fpclassify_double_#res#1| (_ bv0 32)))) [2021-11-23 13:36:23,389 INFO L858 garLoopResultBuilder]: For program point L41(lines 41 49) no Hoare annotation was computed. [2021-11-23 13:36:23,389 INFO L858 garLoopResultBuilder]: For program point L41-1(lines 41 49) no Hoare annotation was computed. [2021-11-23 13:36:23,389 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-23 13:36:23,389 INFO L861 garLoopResultBuilder]: At program point L91(lines 74 92) the Hoare annotation is: true [2021-11-23 13:36:23,390 INFO L858 garLoopResultBuilder]: For program point L59(line 59) no Hoare annotation was computed. [2021-11-23 13:36:23,390 INFO L858 garLoopResultBuilder]: For program point L59-2(line 59) no Hoare annotation was computed. [2021-11-23 13:36:23,390 INFO L854 garLoopResultBuilder]: At program point L59-3(lines 52 60) the Hoare annotation is: (and (= |ULTIMATE.start_fmax_double_~x#1| (fp.neg (_ +zero 11 53))) (= (_ +zero 11 53) |ULTIMATE.start_fmax_double_~y#1|) (= (_ +zero 11 53) |ULTIMATE.start_fmax_double_#res#1|)) [2021-11-23 13:36:23,393 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:36:23,395 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-23 13:36:23,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 01:36:23 BoogieIcfgContainer [2021-11-23 13:36:23,413 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-23 13:36:23,413 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 13:36:23,413 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 13:36:23,414 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 13:36:23,414 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:36:17" (3/4) ... [2021-11-23 13:36:23,417 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-23 13:36:23,428 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 24 nodes and edges [2021-11-23 13:36:23,429 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2021-11-23 13:36:23,429 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-23 13:36:23,430 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-23 13:36:23,453 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (x == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) && ~Pluszero~LONGDOUBLE() == y) && !(\result == 0bv32) [2021-11-23 13:36:23,454 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (x == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) && ~Pluszero~LONGDOUBLE() == y) && ~Pluszero~LONGDOUBLE() == \result [2021-11-23 13:36:23,454 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((x == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) && aux-res == 0.0 && __signbit_double(res) == 0-aux) && ~Pluszero~LONGDOUBLE() == y) && res == ~Pluszero~LONGDOUBLE()) && ~Pluszero~LONGDOUBLE() == \result) && ~Pluszero~LONGDOUBLE() == x [2021-11-23 13:36:23,455 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (x == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) && ~Pluszero~LONGDOUBLE() == y) && !(\result == 0bv32) [2021-11-23 13:36:23,455 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((x == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) && aux-res == 0.0 && __signbit_double(res) == 0-aux) && ~Pluszero~LONGDOUBLE() == y) && 0bv32 == \result [2021-11-23 13:36:23,472 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7fc0c7-e15e-4b92-abe8-33e76d73a66a/bin/uautomizer-wIGwrQj20G/witness.graphml [2021-11-23 13:36:23,472 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 13:36:23,473 INFO L158 Benchmark]: Toolchain (without parser) took 6864.40ms. Allocated memory was 56.6MB in the beginning and 86.0MB in the end (delta: 29.4MB). Free memory was 35.5MB in the beginning and 41.4MB in the end (delta: -5.8MB). Peak memory consumption was 23.2MB. Max. memory is 16.1GB. [2021-11-23 13:36:23,473 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 56.6MB. Free memory was 37.5MB in the beginning and 37.4MB in the end (delta: 43.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 13:36:23,474 INFO L158 Benchmark]: CACSL2BoogieTranslator took 314.52ms. Allocated memory is still 56.6MB. Free memory was 35.3MB in the beginning and 38.2MB in the end (delta: -2.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-23 13:36:23,474 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.69ms. Allocated memory is still 56.6MB. Free memory was 38.2MB in the beginning and 36.4MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 13:36:23,475 INFO L158 Benchmark]: Boogie Preprocessor took 36.52ms. Allocated memory is still 56.6MB. Free memory was 36.4MB in the beginning and 34.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 13:36:23,475 INFO L158 Benchmark]: RCFGBuilder took 421.36ms. Allocated memory was 56.6MB in the beginning and 71.3MB in the end (delta: 14.7MB). Free memory was 34.7MB in the beginning and 48.4MB in the end (delta: -13.7MB). Peak memory consumption was 12.4MB. Max. memory is 16.1GB. [2021-11-23 13:36:23,476 INFO L158 Benchmark]: TraceAbstraction took 5966.01ms. Allocated memory was 71.3MB in the beginning and 86.0MB in the end (delta: 14.7MB). Free memory was 48.1MB in the beginning and 45.6MB in the end (delta: 2.6MB). Peak memory consumption was 16.2MB. Max. memory is 16.1GB. [2021-11-23 13:36:23,476 INFO L158 Benchmark]: Witness Printer took 59.19ms. Allocated memory is still 86.0MB. Free memory was 45.6MB in the beginning and 41.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-23 13:36:23,478 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 56.6MB. Free memory was 37.5MB in the beginning and 37.4MB in the end (delta: 43.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 314.52ms. Allocated memory is still 56.6MB. Free memory was 35.3MB in the beginning and 38.2MB in the end (delta: -2.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 58.69ms. Allocated memory is still 56.6MB. Free memory was 38.2MB in the beginning and 36.4MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.52ms. Allocated memory is still 56.6MB. Free memory was 36.4MB in the beginning and 34.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 421.36ms. Allocated memory was 56.6MB in the beginning and 71.3MB in the end (delta: 14.7MB). Free memory was 34.7MB in the beginning and 48.4MB in the end (delta: -13.7MB). Peak memory consumption was 12.4MB. Max. memory is 16.1GB. * TraceAbstraction took 5966.01ms. Allocated memory was 71.3MB in the beginning and 86.0MB in the end (delta: 14.7MB). Free memory was 48.1MB in the beginning and 45.6MB in the end (delta: 2.6MB). Peak memory consumption was 16.2MB. Max. memory is 16.1GB. * Witness Printer took 59.19ms. Allocated memory is still 86.0MB. Free memory was 45.6MB in the beginning and 41.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 87]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 5.9s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 203 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 203 mSDsluCounter, 854 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 53 IncrementalHoareTripleChecker+Unchecked, 595 mSDsCounter, 20 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 137 IncrementalHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 20 mSolverCounterUnsat, 259 mSDtfsCounter, 137 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 256 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, InterpolantAutomatonStates: 45, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 61 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 16 NumberOfFragments, 89 HoareAnnotationTreeSize, 8 FomulaSimplifications, 26 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 29 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 128 NumberOfCodeBlocks, 128 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 240 ConstructedInterpolants, 32 QuantifiedInterpolants, 1020 SizeOfPredicates, 38 NumberOfNonLiveVariables, 449 ConjunctsInSsa, 55 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: (x == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) && ~Pluszero~LONGDOUBLE() == y) && !(\result == 0bv32) - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: (x == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) && ~Pluszero~LONGDOUBLE() == y) && !(\result == 0bv32) - InvariantResult [Line: 62]: Loop Invariant Derived loop invariant: ((x == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) && aux-res == 0.0 && __signbit_double(res) == 0-aux) && ~Pluszero~LONGDOUBLE() == y) && 0bv32 == \result - InvariantResult [Line: 65]: Loop Invariant Derived loop invariant: ((((x == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) && aux-res == 0.0 && __signbit_double(res) == 0-aux) && ~Pluszero~LONGDOUBLE() == y) && res == ~Pluszero~LONGDOUBLE()) && ~Pluszero~LONGDOUBLE() == \result) && ~Pluszero~LONGDOUBLE() == x - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: (x == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) && x == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE())) && ~Pluszero~LONGDOUBLE() == y - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: (x == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) && ~Pluszero~LONGDOUBLE() == y) && ~Pluszero~LONGDOUBLE() == x - InvariantResult [Line: 74]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 52]: Loop Invariant Derived loop invariant: (x == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) && ~Pluszero~LONGDOUBLE() == y) && ~Pluszero~LONGDOUBLE() == \result RESULT: Ultimate proved your program to be correct! [2021-11-23 13:36:23,530 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7fc0c7-e15e-4b92-abe8-33e76d73a66a/bin/uautomizer-wIGwrQj20G/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 Writing output log to file Ultimate.log Result: TRUE