./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/exp_loop.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72c44b6b-3880-4d7d-8080-12e373655b3d/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72c44b6b-3880-4d7d-8080-12e373655b3d/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72c44b6b-3880-4d7d-8080-12e373655b3d/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72c44b6b-3880-4d7d-8080-12e373655b3d/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/exp_loop.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72c44b6b-3880-4d7d-8080-12e373655b3d/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72c44b6b-3880-4d7d-8080-12e373655b3d/bin/uautomizer-DrprNOufMa --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 8d8110300cda7d6230101fbf6f86509d455885849ba4fd2c9ffa62e45e5fbc59 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-07 01:12:41,306 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-07 01:12:41,308 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-07 01:12:41,330 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-07 01:12:41,331 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-07 01:12:41,332 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-07 01:12:41,333 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-07 01:12:41,335 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-07 01:12:41,336 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-07 01:12:41,337 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-07 01:12:41,338 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-07 01:12:41,339 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-07 01:12:41,340 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-07 01:12:41,341 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-07 01:12:41,342 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-07 01:12:41,343 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-07 01:12:41,344 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-07 01:12:41,345 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-07 01:12:41,346 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-07 01:12:41,348 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-07 01:12:41,350 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-07 01:12:41,351 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-07 01:12:41,352 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-07 01:12:41,353 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-07 01:12:41,356 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-07 01:12:41,356 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-07 01:12:41,356 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-07 01:12:41,357 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-07 01:12:41,358 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-07 01:12:41,358 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-07 01:12:41,359 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-07 01:12:41,359 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-07 01:12:41,360 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-07 01:12:41,361 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-07 01:12:41,362 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-07 01:12:41,362 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-07 01:12:41,363 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-07 01:12:41,363 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-07 01:12:41,363 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-07 01:12:41,364 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-07 01:12:41,365 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-07 01:12:41,366 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72c44b6b-3880-4d7d-8080-12e373655b3d/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-07 01:12:41,392 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-07 01:12:41,392 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-07 01:12:41,393 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-07 01:12:41,393 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-07 01:12:41,394 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-07 01:12:41,394 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-07 01:12:41,395 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-07 01:12:41,395 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-07 01:12:41,395 INFO L138 SettingsManager]: * Use SBE=true [2021-12-07 01:12:41,395 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-07 01:12:41,395 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-07 01:12:41,396 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-07 01:12:41,396 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-07 01:12:41,396 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-07 01:12:41,396 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-07 01:12:41,396 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-07 01:12:41,397 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-07 01:12:41,397 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-07 01:12:41,397 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-07 01:12:41,397 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-07 01:12:41,397 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-07 01:12:41,397 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-07 01:12:41,398 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-07 01:12:41,398 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-07 01:12:41,398 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 01:12:41,398 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-07 01:12:41,398 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-07 01:12:41,398 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-07 01:12:41,398 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-07 01:12:41,399 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-07 01:12:41,399 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-07 01:12:41,399 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-07 01:12:41,399 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-07 01:12:41,399 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-07 01:12:41,399 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72c44b6b-3880-4d7d-8080-12e373655b3d/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72c44b6b-3880-4d7d-8080-12e373655b3d/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8d8110300cda7d6230101fbf6f86509d455885849ba4fd2c9ffa62e45e5fbc59 [2021-12-07 01:12:41,609 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-07 01:12:41,626 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-07 01:12:41,628 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-07 01:12:41,629 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-07 01:12:41,629 INFO L275 PluginConnector]: CDTParser initialized [2021-12-07 01:12:41,630 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72c44b6b-3880-4d7d-8080-12e373655b3d/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/float-benchs/exp_loop.c [2021-12-07 01:12:41,670 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72c44b6b-3880-4d7d-8080-12e373655b3d/bin/uautomizer-DrprNOufMa/data/89cd89dea/17986a836b0849548eb236c4c403e681/FLAGce8b68340 [2021-12-07 01:12:42,092 INFO L306 CDTParser]: Found 1 translation units. [2021-12-07 01:12:42,093 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72c44b6b-3880-4d7d-8080-12e373655b3d/sv-benchmarks/c/float-benchs/exp_loop.c [2021-12-07 01:12:42,098 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72c44b6b-3880-4d7d-8080-12e373655b3d/bin/uautomizer-DrprNOufMa/data/89cd89dea/17986a836b0849548eb236c4c403e681/FLAGce8b68340 [2021-12-07 01:12:42,106 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72c44b6b-3880-4d7d-8080-12e373655b3d/bin/uautomizer-DrprNOufMa/data/89cd89dea/17986a836b0849548eb236c4c403e681 [2021-12-07 01:12:42,108 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-07 01:12:42,109 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-07 01:12:42,110 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-07 01:12:42,110 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-07 01:12:42,113 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-07 01:12:42,113 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:12:42" (1/1) ... [2021-12-07 01:12:42,114 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6269931d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:12:42, skipping insertion in model container [2021-12-07 01:12:42,114 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:12:42" (1/1) ... [2021-12-07 01:12:42,124 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-07 01:12:42,138 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-07 01:12:42,248 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_72c44b6b-3880-4d7d-8080-12e373655b3d/sv-benchmarks/c/float-benchs/exp_loop.c[587,600] [2021-12-07 01:12:42,264 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 01:12:42,269 INFO L203 MainTranslator]: Completed pre-run [2021-12-07 01:12:42,278 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_72c44b6b-3880-4d7d-8080-12e373655b3d/sv-benchmarks/c/float-benchs/exp_loop.c[587,600] [2021-12-07 01:12:42,284 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 01:12:42,294 INFO L208 MainTranslator]: Completed translation [2021-12-07 01:12:42,294 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:12:42 WrapperNode [2021-12-07 01:12:42,294 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-07 01:12:42,295 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-07 01:12:42,295 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-07 01:12:42,295 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-07 01:12:42,300 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:12:42" (1/1) ... [2021-12-07 01:12:42,306 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:12:42" (1/1) ... [2021-12-07 01:12:42,321 INFO L137 Inliner]: procedures = 18, calls = 17, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 101 [2021-12-07 01:12:42,321 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-07 01:12:42,322 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-07 01:12:42,322 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-07 01:12:42,322 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-07 01:12:42,329 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:12:42" (1/1) ... [2021-12-07 01:12:42,329 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:12:42" (1/1) ... [2021-12-07 01:12:42,331 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:12:42" (1/1) ... [2021-12-07 01:12:42,331 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:12:42" (1/1) ... [2021-12-07 01:12:42,335 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:12:42" (1/1) ... [2021-12-07 01:12:42,339 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:12:42" (1/1) ... [2021-12-07 01:12:42,340 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:12:42" (1/1) ... [2021-12-07 01:12:42,342 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-07 01:12:42,342 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-07 01:12:42,343 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-07 01:12:42,343 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-07 01:12:42,344 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:12:42" (1/1) ... [2021-12-07 01:12:42,350 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 01:12:42,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72c44b6b-3880-4d7d-8080-12e373655b3d/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:12:42,371 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72c44b6b-3880-4d7d-8080-12e373655b3d/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-07 01:12:42,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72c44b6b-3880-4d7d-8080-12e373655b3d/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-07 01:12:42,402 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-07 01:12:42,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-07 01:12:42,403 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-07 01:12:42,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-07 01:12:42,403 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-07 01:12:42,403 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-07 01:12:42,403 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-07 01:12:42,403 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-07 01:12:42,455 INFO L236 CfgBuilder]: Building ICFG [2021-12-07 01:12:42,456 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-07 01:12:42,552 INFO L277 CfgBuilder]: Performing block encoding [2021-12-07 01:12:42,557 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-07 01:12:42,557 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-12-07 01:12:42,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:12:42 BoogieIcfgContainer [2021-12-07 01:12:42,558 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-07 01:12:42,560 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-07 01:12:42,560 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-07 01:12:42,562 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-07 01:12:42,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 01:12:42" (1/3) ... [2021-12-07 01:12:42,563 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63901fd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 01:12:42, skipping insertion in model container [2021-12-07 01:12:42,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:12:42" (2/3) ... [2021-12-07 01:12:42,563 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63901fd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 01:12:42, skipping insertion in model container [2021-12-07 01:12:42,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:12:42" (3/3) ... [2021-12-07 01:12:42,564 INFO L111 eAbstractionObserver]: Analyzing ICFG exp_loop.c [2021-12-07 01:12:42,568 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-07 01:12:42,568 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-07 01:12:42,602 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-07 01:12:42,607 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 [2021-12-07 01:12:42,607 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-07 01:12:42,617 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 23 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) [2021-12-07 01:12:42,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-07 01:12:42,621 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:12:42,621 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:12:42,622 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:12:42,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:12:42,625 INFO L85 PathProgramCache]: Analyzing trace with hash -250377569, now seen corresponding path program 1 times [2021-12-07 01:12:42,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:12:42,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125814697] [2021-12-07 01:12:42,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:12:42,633 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:12:42,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:12:42,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:12:42,744 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:12:42,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125814697] [2021-12-07 01:12:42,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125814697] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:12:42,745 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:12:42,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-07 01:12:42,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34421896] [2021-12-07 01:12:42,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:12:42,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-07 01:12:42,750 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:12:42,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-07 01:12:42,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-07 01:12:42,773 INFO L87 Difference]: Start difference. First operand has 24 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 23 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) Second operand has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:12:42,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:12:42,785 INFO L93 Difference]: Finished difference Result 45 states and 68 transitions. [2021-12-07 01:12:42,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-07 01:12:42,786 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-12-07 01:12:42,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:12:42,792 INFO L225 Difference]: With dead ends: 45 [2021-12-07 01:12:42,792 INFO L226 Difference]: Without dead ends: 20 [2021-12-07 01:12:42,794 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 [2021-12-07 01:12:42,797 INFO L933 BasicCegarLoop]: 30 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, 30 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 [2021-12-07 01:12:42,798 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:12:42,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-12-07 01:12:42,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-12-07 01:12:42,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.368421052631579) internal successors, (26), 19 states have internal predecessors, (26), 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) [2021-12-07 01:12:42,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 26 transitions. [2021-12-07 01:12:42,822 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 26 transitions. Word has length 16 [2021-12-07 01:12:42,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:12:42,823 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 26 transitions. [2021-12-07 01:12:42,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:12:42,823 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 26 transitions. [2021-12-07 01:12:42,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-07 01:12:42,823 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:12:42,824 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:12:42,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-07 01:12:42,824 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:12:42,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:12:42,825 INFO L85 PathProgramCache]: Analyzing trace with hash -1261494819, now seen corresponding path program 1 times [2021-12-07 01:12:42,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:12:42,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535428488] [2021-12-07 01:12:42,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:12:42,825 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:12:42,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:12:42,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:12:42,873 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:12:42,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535428488] [2021-12-07 01:12:42,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535428488] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:12:42,874 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:12:42,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:12:42,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417133195] [2021-12-07 01:12:42,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:12:42,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:12:42,875 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:12:42,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:12:42,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:12:42,876 INFO L87 Difference]: Start difference. First operand 20 states and 26 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:12:42,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:12:42,889 INFO L93 Difference]: Finished difference Result 26 states and 32 transitions. [2021-12-07 01:12:42,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:12:42,889 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-12-07 01:12:42,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:12:42,890 INFO L225 Difference]: With dead ends: 26 [2021-12-07 01:12:42,890 INFO L226 Difference]: Without dead ends: 21 [2021-12-07 01:12:42,890 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:12:42,891 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 0 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:12:42,892 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 44 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:12:42,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-12-07 01:12:42,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-12-07 01:12:42,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.35) internal successors, (27), 20 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:12:42,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 27 transitions. [2021-12-07 01:12:42,896 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 27 transitions. Word has length 16 [2021-12-07 01:12:42,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:12:42,896 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 27 transitions. [2021-12-07 01:12:42,896 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:12:42,896 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 27 transitions. [2021-12-07 01:12:42,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-07 01:12:42,897 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:12:42,897 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:12:42,897 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-07 01:12:42,897 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:12:42,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:12:42,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1675232227, now seen corresponding path program 1 times [2021-12-07 01:12:42,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:12:42,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883713481] [2021-12-07 01:12:42,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:12:42,898 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:12:42,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 01:12:42,923 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-07 01:12:42,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 01:12:42,957 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-07 01:12:42,957 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-07 01:12:42,958 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-07 01:12:42,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-07 01:12:42,962 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-12-07 01:12:42,965 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-07 01:12:42,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 01:12:42 BoogieIcfgContainer [2021-12-07 01:12:42,989 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-07 01:12:42,989 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-07 01:12:42,989 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-07 01:12:42,990 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-07 01:12:42,990 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:12:42" (3/4) ... [2021-12-07 01:12:42,992 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-07 01:12:42,992 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-07 01:12:42,993 INFO L158 Benchmark]: Toolchain (without parser) took 883.41ms. Allocated memory was 81.8MB in the beginning and 100.7MB in the end (delta: 18.9MB). Free memory was 43.8MB in the beginning and 57.9MB in the end (delta: -14.1MB). Peak memory consumption was 4.3MB. Max. memory is 16.1GB. [2021-12-07 01:12:42,993 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 81.8MB. Free memory is still 60.5MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-07 01:12:42,993 INFO L158 Benchmark]: CACSL2BoogieTranslator took 184.10ms. Allocated memory was 81.8MB in the beginning and 100.7MB in the end (delta: 18.9MB). Free memory was 43.7MB in the beginning and 77.0MB in the end (delta: -33.4MB). Peak memory consumption was 5.9MB. Max. memory is 16.1GB. [2021-12-07 01:12:42,994 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.72ms. Allocated memory is still 100.7MB. Free memory was 77.0MB in the beginning and 75.1MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-07 01:12:42,994 INFO L158 Benchmark]: Boogie Preprocessor took 19.93ms. Allocated memory is still 100.7MB. Free memory was 75.1MB in the beginning and 73.8MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-07 01:12:42,995 INFO L158 Benchmark]: RCFGBuilder took 215.86ms. Allocated memory is still 100.7MB. Free memory was 73.8MB in the beginning and 63.1MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-07 01:12:42,995 INFO L158 Benchmark]: TraceAbstraction took 429.37ms. Allocated memory is still 100.7MB. Free memory was 62.6MB in the beginning and 58.0MB in the end (delta: 4.6MB). Peak memory consumption was 6.5MB. Max. memory is 16.1GB. [2021-12-07 01:12:42,995 INFO L158 Benchmark]: Witness Printer took 2.71ms. Allocated memory is still 100.7MB. Free memory was 58.0MB in the beginning and 57.9MB in the end (delta: 77.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-07 01:12:42,998 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 81.8MB. Free memory is still 60.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 184.10ms. Allocated memory was 81.8MB in the beginning and 100.7MB in the end (delta: 18.9MB). Free memory was 43.7MB in the beginning and 77.0MB in the end (delta: -33.4MB). Peak memory consumption was 5.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 26.72ms. Allocated memory is still 100.7MB. Free memory was 77.0MB in the beginning and 75.1MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 19.93ms. Allocated memory is still 100.7MB. Free memory was 75.1MB in the beginning and 73.8MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 215.86ms. Allocated memory is still 100.7MB. Free memory was 73.8MB in the beginning and 63.1MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 429.37ms. Allocated memory is still 100.7MB. Free memory was 62.6MB in the beginning and 58.0MB in the end (delta: 4.6MB). Peak memory consumption was 6.5MB. Max. memory is 16.1GB. * Witness Printer took 2.71ms. Allocated memory is still 100.7MB. Free memory was 58.0MB in the beginning and 57.9MB in the end (delta: 77.3kB). 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: 14]: 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 80, overapproximation of someBinaryFLOATComparisonOperation at line 80, overapproximation of someBinaryArithmeticFLOAToperation at line 66. Possible FailurePath: [L71] float a, b, c; [L72] int e; [L74] a = __VERIFIER_nondet_float() [L75] CALL assume_abort_if_not(a >= 1e-10 && a <= 1e10) [L12] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L75] RET assume_abort_if_not(a >= 1e-10 && a <= 1e10) [L77] CALL, EXPR FREXP(a, &e) [L25] int x; [L26] float r; [L27] CALL, EXPR FABS(d) [L19] COND TRUE d >= 0.f [L19] return d; VAL [\old(d)=51, \result=51, d=51] [L27] RET, EXPR FABS(d) [L27] float dd = FABS(d); [L29] COND TRUE dd >= 1.f [L30] x = 1 [L31] r = 2.f VAL [\old(d)=51, d=51, dd=51, e={5:0}, e={5:0}, r=2, x=1] [L32] COND FALSE !(r <= dd) VAL [\old(d)=51, d=51, dd=51, e={5:0}, e={5:0}, r=2, x=1] [L46] *e = x [L47] return dd / r; VAL [\old(d)=51, d=51, dd=51, e={5:0}, e={5:0}, r=2, x=1] [L77] RET, EXPR FREXP(a, &e) [L77] b = FREXP(a, &e) [L78] EXPR \read(e) [L78] CALL, EXPR LDEXP(b, e/2) [L52] float x = 1.; VAL [\old(d)=50, \old(e)=0, d=50, e=0, x=1] [L54] COND TRUE e >= 0 VAL [\old(d)=50, \old(e)=0, d=50, e=0, x=1] [L55] COND FALSE !(e > 0) VAL [\old(d)=50, \old(e)=0, d=50, e=0, x=1] [L66] return d * x; VAL [\old(d)=50, \old(e)=0, d=50, e=0, x=1] [L78] RET, EXPR LDEXP(b, e/2) [L78] c = LDEXP(b, e/2) [L80] CALL __VERIFIER_assert(c >= 0.f && c <= 1e6) [L14] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L14] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 74 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 19 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7 IncrementalHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 55 mSDtfsCounter, 7 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, InterpolantAutomatonStates: 5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 48 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 30 ConstructedInterpolants, 0 QuantifiedInterpolants, 34 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 [2021-12-07 01:12:43,042 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72c44b6b-3880-4d7d-8080-12e373655b3d/bin/uautomizer-DrprNOufMa/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_72c44b6b-3880-4d7d-8080-12e373655b3d/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72c44b6b-3880-4d7d-8080-12e373655b3d/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72c44b6b-3880-4d7d-8080-12e373655b3d/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72c44b6b-3880-4d7d-8080-12e373655b3d/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/exp_loop.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72c44b6b-3880-4d7d-8080-12e373655b3d/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72c44b6b-3880-4d7d-8080-12e373655b3d/bin/uautomizer-DrprNOufMa --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 8d8110300cda7d6230101fbf6f86509d455885849ba4fd2c9ffa62e45e5fbc59 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-07 01:12:44,634 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-07 01:12:44,636 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-07 01:12:44,658 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-07 01:12:44,658 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-07 01:12:44,659 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-07 01:12:44,660 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-07 01:12:44,662 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-07 01:12:44,664 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-07 01:12:44,664 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-07 01:12:44,665 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-07 01:12:44,666 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-07 01:12:44,667 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-07 01:12:44,667 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-07 01:12:44,669 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-07 01:12:44,670 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-07 01:12:44,671 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-07 01:12:44,672 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-07 01:12:44,689 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-07 01:12:44,692 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-07 01:12:44,694 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-07 01:12:44,695 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-07 01:12:44,697 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-07 01:12:44,698 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-07 01:12:44,702 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-07 01:12:44,702 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-07 01:12:44,703 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-07 01:12:44,704 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-07 01:12:44,704 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-07 01:12:44,706 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-07 01:12:44,706 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-07 01:12:44,707 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-07 01:12:44,708 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-07 01:12:44,709 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-07 01:12:44,710 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-07 01:12:44,710 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-07 01:12:44,711 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-07 01:12:44,711 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-07 01:12:44,712 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-07 01:12:44,713 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-07 01:12:44,713 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-07 01:12:44,714 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72c44b6b-3880-4d7d-8080-12e373655b3d/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-07 01:12:44,741 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-07 01:12:44,741 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-07 01:12:44,741 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-07 01:12:44,742 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-07 01:12:44,742 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-07 01:12:44,742 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-07 01:12:44,743 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-07 01:12:44,743 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-07 01:12:44,743 INFO L138 SettingsManager]: * Use SBE=true [2021-12-07 01:12:44,743 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-07 01:12:44,744 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-07 01:12:44,744 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-07 01:12:44,744 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-07 01:12:44,744 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-07 01:12:44,744 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-07 01:12:44,744 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-07 01:12:44,744 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-07 01:12:44,745 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-07 01:12:44,745 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-07 01:12:44,745 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-07 01:12:44,745 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-07 01:12:44,745 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-07 01:12:44,745 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-07 01:12:44,745 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-07 01:12:44,746 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-07 01:12:44,746 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-07 01:12:44,746 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 01:12:44,746 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-07 01:12:44,746 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-07 01:12:44,746 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-07 01:12:44,746 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-07 01:12:44,747 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-07 01:12:44,747 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-07 01:12:44,747 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-07 01:12:44,747 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-07 01:12:44,747 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-07 01:12:44,747 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-07 01:12:44,747 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72c44b6b-3880-4d7d-8080-12e373655b3d/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72c44b6b-3880-4d7d-8080-12e373655b3d/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8d8110300cda7d6230101fbf6f86509d455885849ba4fd2c9ffa62e45e5fbc59 [2021-12-07 01:12:44,994 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-07 01:12:45,010 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-07 01:12:45,012 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-07 01:12:45,012 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-07 01:12:45,013 INFO L275 PluginConnector]: CDTParser initialized [2021-12-07 01:12:45,014 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72c44b6b-3880-4d7d-8080-12e373655b3d/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/float-benchs/exp_loop.c [2021-12-07 01:12:45,055 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72c44b6b-3880-4d7d-8080-12e373655b3d/bin/uautomizer-DrprNOufMa/data/92a2a5784/472af2d7720445b3b1a63cc266d25895/FLAG5d5e3f95a [2021-12-07 01:12:45,448 INFO L306 CDTParser]: Found 1 translation units. [2021-12-07 01:12:45,448 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72c44b6b-3880-4d7d-8080-12e373655b3d/sv-benchmarks/c/float-benchs/exp_loop.c [2021-12-07 01:12:45,453 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72c44b6b-3880-4d7d-8080-12e373655b3d/bin/uautomizer-DrprNOufMa/data/92a2a5784/472af2d7720445b3b1a63cc266d25895/FLAG5d5e3f95a [2021-12-07 01:12:45,464 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72c44b6b-3880-4d7d-8080-12e373655b3d/bin/uautomizer-DrprNOufMa/data/92a2a5784/472af2d7720445b3b1a63cc266d25895 [2021-12-07 01:12:45,466 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-07 01:12:45,467 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-07 01:12:45,468 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-07 01:12:45,468 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-07 01:12:45,470 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-07 01:12:45,471 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:12:45" (1/1) ... [2021-12-07 01:12:45,472 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6dcd192c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:12:45, skipping insertion in model container [2021-12-07 01:12:45,472 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:12:45" (1/1) ... [2021-12-07 01:12:45,476 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-07 01:12:45,490 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-07 01:12:45,589 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_72c44b6b-3880-4d7d-8080-12e373655b3d/sv-benchmarks/c/float-benchs/exp_loop.c[587,600] [2021-12-07 01:12:45,614 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 01:12:45,624 INFO L203 MainTranslator]: Completed pre-run [2021-12-07 01:12:45,637 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_72c44b6b-3880-4d7d-8080-12e373655b3d/sv-benchmarks/c/float-benchs/exp_loop.c[587,600] [2021-12-07 01:12:45,644 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 01:12:45,655 INFO L208 MainTranslator]: Completed translation [2021-12-07 01:12:45,656 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:12:45 WrapperNode [2021-12-07 01:12:45,656 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-07 01:12:45,656 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-07 01:12:45,657 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-07 01:12:45,657 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-07 01:12:45,662 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:12:45" (1/1) ... [2021-12-07 01:12:45,669 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:12:45" (1/1) ... [2021-12-07 01:12:45,686 INFO L137 Inliner]: procedures = 21, calls = 17, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 102 [2021-12-07 01:12:45,686 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-07 01:12:45,687 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-07 01:12:45,687 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-07 01:12:45,687 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-07 01:12:45,693 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:12:45" (1/1) ... [2021-12-07 01:12:45,694 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:12:45" (1/1) ... [2021-12-07 01:12:45,697 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:12:45" (1/1) ... [2021-12-07 01:12:45,697 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:12:45" (1/1) ... [2021-12-07 01:12:45,702 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:12:45" (1/1) ... [2021-12-07 01:12:45,706 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:12:45" (1/1) ... [2021-12-07 01:12:45,707 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:12:45" (1/1) ... [2021-12-07 01:12:45,710 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-07 01:12:45,711 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-07 01:12:45,711 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-07 01:12:45,711 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-07 01:12:45,711 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:12:45" (1/1) ... [2021-12-07 01:12:45,717 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 01:12:45,724 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72c44b6b-3880-4d7d-8080-12e373655b3d/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:12:45,735 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72c44b6b-3880-4d7d-8080-12e373655b3d/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-07 01:12:45,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72c44b6b-3880-4d7d-8080-12e373655b3d/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-07 01:12:45,766 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-07 01:12:45,766 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-07 01:12:45,766 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-07 01:12:45,767 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-12-07 01:12:45,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-07 01:12:45,767 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-07 01:12:45,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-07 01:12:45,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-12-07 01:12:45,835 INFO L236 CfgBuilder]: Building ICFG [2021-12-07 01:12:45,837 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-07 01:12:46,639 INFO L277 CfgBuilder]: Performing block encoding [2021-12-07 01:12:46,644 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-07 01:12:46,644 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-12-07 01:12:46,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:12:46 BoogieIcfgContainer [2021-12-07 01:12:46,645 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-07 01:12:46,646 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-07 01:12:46,647 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-07 01:12:46,649 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-07 01:12:46,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 01:12:45" (1/3) ... [2021-12-07 01:12:46,649 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39e713b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 01:12:46, skipping insertion in model container [2021-12-07 01:12:46,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:12:45" (2/3) ... [2021-12-07 01:12:46,650 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39e713b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 01:12:46, skipping insertion in model container [2021-12-07 01:12:46,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:12:46" (3/3) ... [2021-12-07 01:12:46,651 INFO L111 eAbstractionObserver]: Analyzing ICFG exp_loop.c [2021-12-07 01:12:46,654 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-07 01:12:46,654 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-07 01:12:46,687 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-07 01:12:46,692 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 [2021-12-07 01:12:46,693 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-07 01:12:46,702 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 23 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) [2021-12-07 01:12:46,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-07 01:12:46,706 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:12:46,707 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:12:46,707 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:12:46,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:12:46,711 INFO L85 PathProgramCache]: Analyzing trace with hash -250377569, now seen corresponding path program 1 times [2021-12-07 01:12:46,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 01:12:46,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [431066294] [2021-12-07 01:12:46,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:12:46,721 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 01:12:46,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72c44b6b-3880-4d7d-8080-12e373655b3d/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 01:12:46,722 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72c44b6b-3880-4d7d-8080-12e373655b3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 01:12:46,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72c44b6b-3880-4d7d-8080-12e373655b3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-07 01:12:46,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:12:46,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-07 01:12:46,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:12:47,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:12:47,026 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 01:12:47,026 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 01:12:47,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [431066294] [2021-12-07 01:12:47,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [431066294] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:12:47,027 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:12:47,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-07 01:12:47,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180291637] [2021-12-07 01:12:47,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:12:47,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-07 01:12:47,032 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 01:12:47,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-07 01:12:47,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-07 01:12:47,054 INFO L87 Difference]: Start difference. First operand has 24 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 23 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) Second operand has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:12:47,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:12:47,065 INFO L93 Difference]: Finished difference Result 45 states and 68 transitions. [2021-12-07 01:12:47,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-07 01:12:47,066 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-12-07 01:12:47,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:12:47,072 INFO L225 Difference]: With dead ends: 45 [2021-12-07 01:12:47,072 INFO L226 Difference]: Without dead ends: 20 [2021-12-07 01:12:47,074 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-07 01:12:47,077 INFO L933 BasicCegarLoop]: 30 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, 30 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 [2021-12-07 01:12:47,078 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:12:47,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-12-07 01:12:47,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-12-07 01:12:47,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.368421052631579) internal successors, (26), 19 states have internal predecessors, (26), 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) [2021-12-07 01:12:47,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 26 transitions. [2021-12-07 01:12:47,101 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 26 transitions. Word has length 16 [2021-12-07 01:12:47,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:12:47,101 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 26 transitions. [2021-12-07 01:12:47,101 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:12:47,101 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 26 transitions. [2021-12-07 01:12:47,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-07 01:12:47,102 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:12:47,102 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:12:47,119 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72c44b6b-3880-4d7d-8080-12e373655b3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-07 01:12:47,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72c44b6b-3880-4d7d-8080-12e373655b3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 01:12:47,303 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:12:47,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:12:47,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1261494819, now seen corresponding path program 1 times [2021-12-07 01:12:47,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 01:12:47,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [370424689] [2021-12-07 01:12:47,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:12:47,305 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 01:12:47,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72c44b6b-3880-4d7d-8080-12e373655b3d/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 01:12:47,306 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72c44b6b-3880-4d7d-8080-12e373655b3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 01:12:47,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72c44b6b-3880-4d7d-8080-12e373655b3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-07 01:12:47,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:12:47,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-07 01:12:47,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:12:47,704 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-07 01:12:47,737 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2021-12-07 01:12:47,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:12:47,764 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 01:12:47,765 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 01:12:47,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [370424689] [2021-12-07 01:12:47,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [370424689] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:12:47,765 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:12:47,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-07 01:12:47,766 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004438259] [2021-12-07 01:12:47,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:12:47,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-07 01:12:47,767 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 01:12:47,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-07 01:12:47,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-07 01:12:47,769 INFO L87 Difference]: Start difference. First operand 20 states and 26 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:12:49,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:12:49,867 INFO L93 Difference]: Finished difference Result 37 states and 46 transitions. [2021-12-07 01:12:49,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-07 01:12:49,871 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-12-07 01:12:49,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:12:49,871 INFO L225 Difference]: With dead ends: 37 [2021-12-07 01:12:49,871 INFO L226 Difference]: Without dead ends: 30 [2021-12-07 01:12:49,872 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-07 01:12:49,873 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 42 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:12:49,873 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 78 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-12-07 01:12:49,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-12-07 01:12:49,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 25. [2021-12-07 01:12:49,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 24 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) [2021-12-07 01:12:49,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 32 transitions. [2021-12-07 01:12:49,880 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 32 transitions. Word has length 16 [2021-12-07 01:12:49,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:12:49,881 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 32 transitions. [2021-12-07 01:12:49,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:12:49,881 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 32 transitions. [2021-12-07 01:12:49,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-07 01:12:49,882 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:12:49,882 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:12:49,893 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72c44b6b-3880-4d7d-8080-12e373655b3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-12-07 01:12:50,082 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72c44b6b-3880-4d7d-8080-12e373655b3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 01:12:50,084 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:12:50,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:12:50,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1675232227, now seen corresponding path program 1 times [2021-12-07 01:12:50,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 01:12:50,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [587089737] [2021-12-07 01:12:50,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:12:50,089 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 01:12:50,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72c44b6b-3880-4d7d-8080-12e373655b3d/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 01:12:50,092 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72c44b6b-3880-4d7d-8080-12e373655b3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 01:12:50,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72c44b6b-3880-4d7d-8080-12e373655b3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-07 01:12:50,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:12:50,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 23 conjunts are in the unsatisfiable core [2021-12-07 01:12:50,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:13:22,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:13:22,817 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 01:13:22,817 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 01:13:22,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [587089737] [2021-12-07 01:13:22,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [587089737] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:13:22,818 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:13:22,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-07 01:13:22,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496801193] [2021-12-07 01:13:22,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:13:22,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-07 01:13:22,819 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 01:13:22,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-07 01:13:22,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-12-07 01:13:22,820 INFO L87 Difference]: Start difference. First operand 25 states and 32 transitions. Second operand has 14 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:13:37,065 WARN L227 SmtUtils]: Spent 5.42s on a formula simplification. DAG size of input: 27 DAG size of output: 19 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-07 01:13:57,975 WARN L227 SmtUtils]: Spent 15.47s on a formula simplification. DAG size of input: 31 DAG size of output: 23 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-07 01:13:59,211 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-07 01:14:39,167 WARN L227 SmtUtils]: Spent 31.92s on a formula simplification. DAG size of input: 35 DAG size of output: 27 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-07 01:14:40,637 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-07 01:14:41,903 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-07 01:15:13,070 WARN L227 SmtUtils]: Spent 22.20s on a formula simplification. DAG size of input: 41 DAG size of output: 33 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-07 01:15:15,852 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-07 01:15:45,362 WARN L227 SmtUtils]: Spent 21.96s on a formula simplification. DAG size of input: 41 DAG size of output: 33 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-07 01:15:46,551 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-07 01:15:49,091 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-07 01:15:51,292 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 01:16:26,903 WARN L227 SmtUtils]: Spent 29.86s on a formula simplification. DAG size of input: 48 DAG size of output: 40 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-07 01:16:29,948 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 01:16:31,956 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 01:16:32,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:16:32,529 INFO L93 Difference]: Finished difference Result 48 states and 61 transitions. [2021-12-07 01:16:32,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-07 01:16:32,530 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-12-07 01:16:32,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:16:32,530 INFO L225 Difference]: With dead ends: 48 [2021-12-07 01:16:32,531 INFO L226 Difference]: Without dead ends: 21 [2021-12-07 01:16:32,531 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 192.2s TimeCoverageRelationStatistics Valid=115, Invalid=305, Unknown=0, NotChecked=0, Total=420 [2021-12-07 01:16:32,532 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 66 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 6 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 47 IncrementalHoareTripleChecker+Unchecked, 21.9s IncrementalHoareTripleChecker+Time [2021-12-07 01:16:32,533 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 45 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 71 Invalid, 2 Unknown, 47 Unchecked, 21.9s Time] [2021-12-07 01:16:32,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-12-07 01:16:32,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-12-07 01:16:32,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.3) internal successors, (26), 20 states have internal predecessors, (26), 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) [2021-12-07 01:16:32,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 26 transitions. [2021-12-07 01:16:32,537 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 26 transitions. Word has length 16 [2021-12-07 01:16:32,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:16:32,537 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 26 transitions. [2021-12-07 01:16:32,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:16:32,537 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 26 transitions. [2021-12-07 01:16:32,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-07 01:16:32,537 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:16:32,538 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:16:32,549 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72c44b6b-3880-4d7d-8080-12e373655b3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-12-07 01:16:32,738 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72c44b6b-3880-4d7d-8080-12e373655b3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 01:16:32,739 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:16:32,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:16:32,741 INFO L85 PathProgramCache]: Analyzing trace with hash -574750805, now seen corresponding path program 1 times [2021-12-07 01:16:32,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 01:16:32,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [766916962] [2021-12-07 01:16:32,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:16:32,743 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 01:16:32,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72c44b6b-3880-4d7d-8080-12e373655b3d/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 01:16:32,746 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72c44b6b-3880-4d7d-8080-12e373655b3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 01:16:32,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72c44b6b-3880-4d7d-8080-12e373655b3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-12-07 01:16:33,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:16:33,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-07 01:16:33,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:16:33,184 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-07 01:16:33,216 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2021-12-07 01:16:33,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:16:33,254 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 01:16:33,254 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 01:16:33,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [766916962] [2021-12-07 01:16:33,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [766916962] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:16:33,254 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:16:33,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-07 01:16:33,255 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6974530] [2021-12-07 01:16:33,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:16:33,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-07 01:16:33,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 01:16:33,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-07 01:16:33,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-07 01:16:33,256 INFO L87 Difference]: Start difference. First operand 21 states and 26 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:16:34,910 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 01:16:36,308 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 01:16:36,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:16:36,657 INFO L93 Difference]: Finished difference Result 39 states and 47 transitions. [2021-12-07 01:16:36,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-07 01:16:36,661 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-12-07 01:16:36,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:16:36,662 INFO L225 Difference]: With dead ends: 39 [2021-12-07 01:16:36,662 INFO L226 Difference]: Without dead ends: 32 [2021-12-07 01:16:36,662 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-07 01:16:36,663 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 42 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2021-12-07 01:16:36,663 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 74 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2021-12-07 01:16:36,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-12-07 01:16:36,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 27. [2021-12-07 01:16:36,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 26 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:16:36,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 33 transitions. [2021-12-07 01:16:36,668 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 33 transitions. Word has length 17 [2021-12-07 01:16:36,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:16:36,668 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 33 transitions. [2021-12-07 01:16:36,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:16:36,668 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 33 transitions. [2021-12-07 01:16:36,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-07 01:16:36,669 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:16:36,669 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:16:36,680 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72c44b6b-3880-4d7d-8080-12e373655b3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-12-07 01:16:36,869 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72c44b6b-3880-4d7d-8080-12e373655b3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 01:16:36,870 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:16:36,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:16:36,872 INFO L85 PathProgramCache]: Analyzing trace with hash -988488213, now seen corresponding path program 1 times [2021-12-07 01:16:36,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 01:16:36,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1570846997] [2021-12-07 01:16:36,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:16:36,874 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 01:16:36,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72c44b6b-3880-4d7d-8080-12e373655b3d/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 01:16:36,876 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72c44b6b-3880-4d7d-8080-12e373655b3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 01:16:36,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72c44b6b-3880-4d7d-8080-12e373655b3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-12-07 01:16:37,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:16:37,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 24 conjunts are in the unsatisfiable core [2021-12-07 01:16:37,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:17:45,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:17:45,347 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 01:17:45,347 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 01:17:45,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1570846997] [2021-12-07 01:17:45,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1570846997] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:17:45,347 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:17:45,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-07 01:17:45,347 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959396800] [2021-12-07 01:17:45,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:17:45,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-07 01:17:45,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 01:17:45,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-07 01:17:45,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2021-12-07 01:17:45,349 INFO L87 Difference]: Start difference. First operand 27 states and 33 transitions. Second operand has 15 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 14 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:18:08,982 WARN L227 SmtUtils]: Spent 7.20s on a formula simplification that was a NOOP. DAG size: 20 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-07 01:18:32,468 WARN L227 SmtUtils]: Spent 12.48s on a formula simplification that was a NOOP. DAG size: 24 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-07 01:18:33,662 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-07 01:19:00,185 WARN L227 SmtUtils]: Spent 14.44s on a formula simplification that was a NOOP. DAG size: 31 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-07 01:19:01,420 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-07 01:19:29,209 WARN L227 SmtUtils]: Spent 15.83s on a formula simplification that was a NOOP. DAG size: 33 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-07 01:19:30,582 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-07 01:19:33,839 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-07 01:19:34,997 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-07 01:20:05,365 WARN L227 SmtUtils]: Spent 16.39s on a formula simplification that was a NOOP. DAG size: 36 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-07 01:20:06,890 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-07 01:20:08,844 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 01:20:11,968 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_main_~a~0#1|)) (.cse2 ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0))) (.cse5 ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_FABS_#res#1|)) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 10000000000.0))) (.cse6 ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_FABS_~d#1|)) (.cse3 ((_ to_fp 11 53) c_currentRoundingMode 10000000000.0))) (and (fp.geq .cse0 .cse1) (not (fp.gt .cse2 |c_ULTIMATE.start_FREXP_~dd~0#1|)) (fp.leq .cse0 .cse3) (exists ((|ULTIMATE.start_FREXP_~dd~0#1| (_ FloatingPoint 8 24))) (let ((.cse4 ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)))) (and (= |c_ULTIMATE.start_FREXP_#res#1| (fp.div c_currentRoundingMode |ULTIMATE.start_FREXP_~dd~0#1| (fp.mul c_currentRoundingMode .cse4 ((_ to_fp 8 24) c_currentRoundingMode 2.0)))) (not (fp.gt .cse4 |ULTIMATE.start_FREXP_~dd~0#1|)) (fp.geq ((_ to_fp 11 53) c_currentRoundingMode |ULTIMATE.start_FREXP_~dd~0#1|) ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 10000000000.0))) (not (fp.geq |ULTIMATE.start_FREXP_~dd~0#1| ((_ to_fp 8 24) c_currentRoundingMode 1.0)))))) (fp.geq .cse5 .cse1) (= (fp.mul c_currentRoundingMode .cse2 ((_ to_fp 8 24) c_currentRoundingMode 2.0)) |c_ULTIMATE.start_FREXP_~r~0#1|) (fp.geq ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_FREXP_~dd~0#1|) .cse1) (not (fp.geq |c_ULTIMATE.start_FREXP_~dd~0#1| ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (fp.leq .cse5 .cse3) (fp.geq .cse6 .cse1) (= c_currentRoundingMode roundNearestTiesToEven) (fp.leq .cse6 .cse3))) is different from false [2021-12-07 01:20:14,780 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-07 01:20:17,730 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 01:20:20,621 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 01:20:21,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:20:21,681 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2021-12-07 01:20:21,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-07 01:20:21,682 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 14 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-12-07 01:20:21,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:20:21,682 INFO L225 Difference]: With dead ends: 34 [2021-12-07 01:20:21,682 INFO L226 Difference]: Without dead ends: 24 [2021-12-07 01:20:21,683 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 176.4s TimeCoverageRelationStatistics Valid=100, Invalid=319, Unknown=5, NotChecked=38, Total=462 [2021-12-07 01:20:21,684 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 42 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 8 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 48 IncrementalHoareTripleChecker+Unchecked, 27.4s IncrementalHoareTripleChecker+Time [2021-12-07 01:20:21,684 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 56 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 64 Invalid, 3 Unknown, 48 Unchecked, 27.4s Time] [2021-12-07 01:20:21,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-12-07 01:20:21,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2021-12-07 01:20:21,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 21 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:20:21,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2021-12-07 01:20:21,688 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 27 transitions. Word has length 17 [2021-12-07 01:20:21,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:20:21,688 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 27 transitions. [2021-12-07 01:20:21,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 14 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:20:21,688 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 27 transitions. [2021-12-07 01:20:21,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-07 01:20:21,689 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:20:21,689 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:20:21,702 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72c44b6b-3880-4d7d-8080-12e373655b3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-12-07 01:20:21,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72c44b6b-3880-4d7d-8080-12e373655b3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 01:20:21,891 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:20:21,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:20:21,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1334689899, now seen corresponding path program 1 times [2021-12-07 01:20:21,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 01:20:21,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1969249989] [2021-12-07 01:20:21,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:20:21,894 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 01:20:21,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72c44b6b-3880-4d7d-8080-12e373655b3d/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 01:20:21,896 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72c44b6b-3880-4d7d-8080-12e373655b3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 01:20:21,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72c44b6b-3880-4d7d-8080-12e373655b3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-12-07 01:20:22,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:20:22,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-07 01:20:22,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:20:22,333 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-07 01:20:22,367 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2021-12-07 01:20:22,403 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:20:22,404 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:20:22,734 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2021-12-07 01:20:23,887 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:20:23,887 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 01:20:23,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1969249989] [2021-12-07 01:20:23,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1969249989] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:20:23,887 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 01:20:23,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2021-12-07 01:20:23,888 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687864518] [2021-12-07 01:20:23,888 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 01:20:23,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-07 01:20:23,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 01:20:23,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-07 01:20:23,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-12-07 01:20:23,889 INFO L87 Difference]: Start difference. First operand 22 states and 27 transitions. Second operand has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 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) [2021-12-07 01:20:30,203 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 01:20:34,660 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 01:20:37,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:20:37,941 INFO L93 Difference]: Finished difference Result 71 states and 86 transitions. [2021-12-07 01:20:37,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-07 01:20:37,955 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 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 17 [2021-12-07 01:20:37,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:20:37,956 INFO L225 Difference]: With dead ends: 71 [2021-12-07 01:20:37,956 INFO L226 Difference]: Without dead ends: 65 [2021-12-07 01:20:37,957 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=127, Invalid=293, Unknown=0, NotChecked=0, Total=420 [2021-12-07 01:20:37,957 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 89 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2021-12-07 01:20:37,958 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 146 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 9.7s Time] [2021-12-07 01:20:37,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-12-07 01:20:37,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 32. [2021-12-07 01:20:37,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 31 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:20:37,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 40 transitions. [2021-12-07 01:20:37,965 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 40 transitions. Word has length 17 [2021-12-07 01:20:37,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:20:37,965 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 40 transitions. [2021-12-07 01:20:37,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 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) [2021-12-07 01:20:37,965 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 40 transitions. [2021-12-07 01:20:37,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-07 01:20:37,966 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:20:37,966 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:20:37,980 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72c44b6b-3880-4d7d-8080-12e373655b3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-12-07 01:20:38,166 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72c44b6b-3880-4d7d-8080-12e373655b3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 01:20:38,168 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:20:38,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:20:38,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1036640219, now seen corresponding path program 1 times [2021-12-07 01:20:38,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 01:20:38,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1235041944] [2021-12-07 01:20:38,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:20:38,171 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 01:20:38,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72c44b6b-3880-4d7d-8080-12e373655b3d/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 01:20:38,173 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72c44b6b-3880-4d7d-8080-12e373655b3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 01:20:38,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72c44b6b-3880-4d7d-8080-12e373655b3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-12-07 01:20:38,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:20:38,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-07 01:20:38,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:20:38,637 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-07 01:20:38,672 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2021-12-07 01:20:38,709 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:20:38,709 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:20:39,045 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2021-12-07 01:20:40,273 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:20:40,273 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 01:20:40,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1235041944] [2021-12-07 01:20:40,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1235041944] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:20:40,273 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 01:20:40,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2021-12-07 01:20:40,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775470907] [2021-12-07 01:20:40,273 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 01:20:40,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-07 01:20:40,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 01:20:40,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-07 01:20:40,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-12-07 01:20:40,274 INFO L87 Difference]: Start difference. First operand 32 states and 40 transitions. Second operand has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 states have internal predecessors, (25), 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) [2021-12-07 01:20:44,201 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 01:20:46,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:20:46,258 INFO L93 Difference]: Finished difference Result 61 states and 71 transitions. [2021-12-07 01:20:46,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-07 01:20:46,268 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 states have internal predecessors, (25), 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 [2021-12-07 01:20:46,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:20:46,268 INFO L225 Difference]: With dead ends: 61 [2021-12-07 01:20:46,268 INFO L226 Difference]: Without dead ends: 54 [2021-12-07 01:20:46,269 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2021-12-07 01:20:46,270 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 72 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2021-12-07 01:20:46,270 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 112 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2021-12-07 01:20:46,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-12-07 01:20:46,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 38. [2021-12-07 01:20:46,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.2702702702702702) internal successors, (47), 37 states have internal predecessors, (47), 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) [2021-12-07 01:20:46,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 47 transitions. [2021-12-07 01:20:46,277 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 47 transitions. Word has length 18 [2021-12-07 01:20:46,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:20:46,277 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 47 transitions. [2021-12-07 01:20:46,278 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 states have internal predecessors, (25), 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) [2021-12-07 01:20:46,278 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 47 transitions. [2021-12-07 01:20:46,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-07 01:20:46,278 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:20:46,278 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:20:46,291 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72c44b6b-3880-4d7d-8080-12e373655b3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-12-07 01:20:46,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72c44b6b-3880-4d7d-8080-12e373655b3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 01:20:46,480 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:20:46,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:20:46,481 INFO L85 PathProgramCache]: Analyzing trace with hash -1450377627, now seen corresponding path program 1 times [2021-12-07 01:20:46,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 01:20:46,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [624884537] [2021-12-07 01:20:46,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:20:46,483 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 01:20:46,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72c44b6b-3880-4d7d-8080-12e373655b3d/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 01:20:46,486 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72c44b6b-3880-4d7d-8080-12e373655b3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 01:20:46,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72c44b6b-3880-4d7d-8080-12e373655b3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-12-07 01:20:46,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:20:46,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 26 conjunts are in the unsatisfiable core [2021-12-07 01:20:46,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:21:38,217 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:21:38,218 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:22:39,730 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode |c_ULTIMATE.start_FREXP_~dd~0#1| |c_ULTIMATE.start_FREXP_~r~0#1|) ((_ to_fp 8 24) c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0))))) (and (fp.geq .cse0 (_ +zero 8 24)) (fp.leq ((_ to_fp 11 53) c_currentRoundingMode .cse0) ((_ to_fp 11 53) c_currentRoundingMode 1000000.0)))) is different from false [2021-12-07 01:22:41,775 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode |c_ULTIMATE.start_FREXP_~dd~0#1| |c_ULTIMATE.start_FREXP_~r~0#1|) ((_ to_fp 8 24) c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0))))) (and (fp.geq .cse0 (_ +zero 8 24)) (fp.leq ((_ to_fp 11 53) c_currentRoundingMode .cse0) ((_ to_fp 11 53) c_currentRoundingMode 1000000.0)))) is different from true [2021-12-07 01:22:52,174 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode |c_ULTIMATE.start_FREXP_~dd~0#1| (fp.mul c_currentRoundingMode |c_ULTIMATE.start_FREXP_~r~0#1| ((_ to_fp 8 24) c_currentRoundingMode 2.0))) ((_ to_fp 8 24) c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0))))) (and (fp.geq .cse0 (_ +zero 8 24)) (fp.leq ((_ to_fp 11 53) c_currentRoundingMode .cse0) ((_ to_fp 11 53) c_currentRoundingMode 1000000.0)))) is different from false [2021-12-07 01:22:54,225 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode |c_ULTIMATE.start_FREXP_~dd~0#1| (fp.mul c_currentRoundingMode |c_ULTIMATE.start_FREXP_~r~0#1| ((_ to_fp 8 24) c_currentRoundingMode 2.0))) ((_ to_fp 8 24) c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0))))) (and (fp.geq .cse0 (_ +zero 8 24)) (fp.leq ((_ to_fp 11 53) c_currentRoundingMode .cse0) ((_ to_fp 11 53) c_currentRoundingMode 1000000.0)))) is different from true [2021-12-07 01:23:08,802 WARN L838 $PredicateComparison]: unable to prove that (or (fp.gt |c_ULTIMATE.start_FREXP_~r~0#1| |c_ULTIMATE.start_FREXP_~dd~0#1|) (let ((.cse0 (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode |c_ULTIMATE.start_FREXP_~dd~0#1| (fp.mul c_currentRoundingMode |c_ULTIMATE.start_FREXP_~r~0#1| ((_ to_fp 8 24) c_currentRoundingMode 2.0))) ((_ to_fp 8 24) c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0))))) (and (fp.geq .cse0 (_ +zero 8 24)) (fp.leq ((_ to_fp 11 53) c_currentRoundingMode .cse0) ((_ to_fp 11 53) c_currentRoundingMode 1000000.0))))) is different from false [2021-12-07 01:23:10,853 WARN L860 $PredicateComparison]: unable to prove that (or (fp.gt |c_ULTIMATE.start_FREXP_~r~0#1| |c_ULTIMATE.start_FREXP_~dd~0#1|) (let ((.cse0 (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode |c_ULTIMATE.start_FREXP_~dd~0#1| (fp.mul c_currentRoundingMode |c_ULTIMATE.start_FREXP_~r~0#1| ((_ to_fp 8 24) c_currentRoundingMode 2.0))) ((_ to_fp 8 24) c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0))))) (and (fp.geq .cse0 (_ +zero 8 24)) (fp.leq ((_ to_fp 11 53) c_currentRoundingMode .cse0) ((_ to_fp 11 53) c_currentRoundingMode 1000000.0))))) is different from true [2021-12-07 01:23:26,235 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode 2.0))) (let ((.cse0 (fp.div c_currentRoundingMode |c_ULTIMATE.start_FREXP_~r~0#1| .cse1))) (or (not (fp.gt |c_ULTIMATE.start_FREXP_~r~0#1| |c_ULTIMATE.start_FREXP_~dd~0#1|)) (fp.gt .cse0 |c_ULTIMATE.start_FREXP_~dd~0#1|) (fp.leq ((_ to_fp 11 53) c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode |c_ULTIMATE.start_FREXP_~dd~0#1| (fp.mul c_currentRoundingMode .cse0 .cse1)) ((_ to_fp 8 24) c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0)))) ((_ to_fp 11 53) c_currentRoundingMode 1000000.0))))) is different from false [2021-12-07 01:23:28,298 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode 2.0))) (let ((.cse0 (fp.div c_currentRoundingMode |c_ULTIMATE.start_FREXP_~r~0#1| .cse1))) (or (not (fp.gt |c_ULTIMATE.start_FREXP_~r~0#1| |c_ULTIMATE.start_FREXP_~dd~0#1|)) (fp.gt .cse0 |c_ULTIMATE.start_FREXP_~dd~0#1|) (fp.leq ((_ to_fp 11 53) c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode |c_ULTIMATE.start_FREXP_~dd~0#1| (fp.mul c_currentRoundingMode .cse0 .cse1)) ((_ to_fp 8 24) c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0)))) ((_ to_fp 11 53) c_currentRoundingMode 1000000.0))))) is different from true [2021-12-07 01:23:30,163 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-12-07 01:23:30,163 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 01:23:30,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [624884537] [2021-12-07 01:23:30,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [624884537] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:23:30,164 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 01:23:30,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 10] total 24 [2021-12-07 01:23:30,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404186522] [2021-12-07 01:23:30,164 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 01:23:30,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-12-07 01:23:30,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 01:23:30,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-12-07 01:23:30,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=321, Unknown=8, NotChecked=156, Total=552 [2021-12-07 01:23:30,165 INFO L87 Difference]: Start difference. First operand 38 states and 47 transitions. Second operand has 24 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 24 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:23:34,276 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 01:23:44,932 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-07 01:24:02,110 WARN L227 SmtUtils]: Spent 6.78s on a formula simplification. DAG size of input: 27 DAG size of output: 19 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-07 01:24:04,566 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-07 01:24:37,085 WARN L227 SmtUtils]: Spent 17.52s on a formula simplification. DAG size of input: 31 DAG size of output: 23 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-07 01:24:39,412 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-07 01:24:40,783 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-07 01:24:41,787 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-07 01:25:32,117 WARN L227 SmtUtils]: Spent 32.37s on a formula simplification. DAG size of input: 35 DAG size of output: 27 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-07 01:25:33,462 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-07 01:25:35,492 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-07 01:25:36,991 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-07 01:25:39,438 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse6 ((_ to_fp 11 53) c_currentRoundingMode 10000000000.0)) (.cse8 ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_main_~a~0#1|)) (.cse5 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 10000000000.0)))) (let ((.cse3 (fp.geq .cse8 .cse5)) (.cse2 (fp.leq .cse8 .cse6)) (.cse4 ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_FABS_#res#1|)) (.cse7 ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_FABS_~d#1|))) (and (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode 2.0))) (let ((.cse0 (fp.div c_currentRoundingMode |c_ULTIMATE.start_FREXP_~r~0#1| .cse1))) (or (not (fp.gt |c_ULTIMATE.start_FREXP_~r~0#1| |c_ULTIMATE.start_FREXP_~dd~0#1|)) (fp.gt .cse0 |c_ULTIMATE.start_FREXP_~dd~0#1|) (fp.leq ((_ to_fp 11 53) c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode |c_ULTIMATE.start_FREXP_~dd~0#1| (fp.mul c_currentRoundingMode .cse0 .cse1)) ((_ to_fp 8 24) c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0)))) ((_ to_fp 11 53) c_currentRoundingMode 1000000.0))))) (or (and (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| (_ bv0 32)) (or (not .cse2) (not .cse3))) (and .cse3 .cse2 (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| (_ bv1 32)))) .cse3 .cse2 (fp.geq .cse4 .cse5) (fp.geq ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_FREXP_~dd~0#1|) .cse5) (not (fp.geq |c_ULTIMATE.start_FREXP_~dd~0#1| ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (fp.leq .cse4 .cse6) (fp.geq .cse7 .cse5) (= c_currentRoundingMode roundNearestTiesToEven) (fp.leq .cse7 .cse6) (= ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) |c_ULTIMATE.start_FREXP_~r~0#1|)))) is different from false [2021-12-07 01:25:41,525 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse6 ((_ to_fp 11 53) c_currentRoundingMode 10000000000.0)) (.cse8 ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_main_~a~0#1|)) (.cse5 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 10000000000.0)))) (let ((.cse3 (fp.geq .cse8 .cse5)) (.cse2 (fp.leq .cse8 .cse6)) (.cse4 ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_FABS_#res#1|)) (.cse7 ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_FABS_~d#1|))) (and (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode 2.0))) (let ((.cse0 (fp.div c_currentRoundingMode |c_ULTIMATE.start_FREXP_~r~0#1| .cse1))) (or (not (fp.gt |c_ULTIMATE.start_FREXP_~r~0#1| |c_ULTIMATE.start_FREXP_~dd~0#1|)) (fp.gt .cse0 |c_ULTIMATE.start_FREXP_~dd~0#1|) (fp.leq ((_ to_fp 11 53) c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode |c_ULTIMATE.start_FREXP_~dd~0#1| (fp.mul c_currentRoundingMode .cse0 .cse1)) ((_ to_fp 8 24) c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0)))) ((_ to_fp 11 53) c_currentRoundingMode 1000000.0))))) (or (and (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| (_ bv0 32)) (or (not .cse2) (not .cse3))) (and .cse3 .cse2 (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| (_ bv1 32)))) .cse3 .cse2 (fp.geq .cse4 .cse5) (fp.geq ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_FREXP_~dd~0#1|) .cse5) (not (fp.geq |c_ULTIMATE.start_FREXP_~dd~0#1| ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (fp.leq .cse4 .cse6) (fp.geq .cse7 .cse5) (= c_currentRoundingMode roundNearestTiesToEven) (fp.leq .cse7 .cse6) (= ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) |c_ULTIMATE.start_FREXP_~r~0#1|)))) is different from true [2021-12-07 01:25:42,933 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-07 01:25:45,561 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-07 01:25:47,582 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-07 01:25:51,500 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse2 ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0))) (.cse1 ((_ to_fp 8 24) c_currentRoundingMode 2.0))) (and (or (fp.gt |c_ULTIMATE.start_FREXP_~r~0#1| |c_ULTIMATE.start_FREXP_~dd~0#1|) (let ((.cse0 (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode |c_ULTIMATE.start_FREXP_~dd~0#1| (fp.mul c_currentRoundingMode |c_ULTIMATE.start_FREXP_~r~0#1| .cse1)) ((_ to_fp 8 24) c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0))))) (and (fp.geq .cse0 (_ +zero 8 24)) (fp.leq ((_ to_fp 11 53) c_currentRoundingMode .cse0) ((_ to_fp 11 53) c_currentRoundingMode 1000000.0))))) (fp.geq ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_FREXP_~dd~0#1|) ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 10000000000.0))) (fp.gt .cse2 |c_ULTIMATE.start_FREXP_~dd~0#1|) (= |c_ULTIMATE.start_FREXP_~r~0#1| (fp.div c_currentRoundingMode .cse2 .cse1)) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-12-07 01:25:52,866 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-07 01:25:54,937 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-07 01:25:56,959 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-07 01:26:00,706 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse2 ((_ to_fp 8 24) c_currentRoundingMode 2.0))) (let ((.cse0 (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode |c_ULTIMATE.start_FREXP_~dd~0#1| (fp.mul c_currentRoundingMode |c_ULTIMATE.start_FREXP_~r~0#1| .cse2)) ((_ to_fp 8 24) c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0)))) (.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)))) (and (fp.geq .cse0 (_ +zero 8 24)) (fp.leq ((_ to_fp 11 53) c_currentRoundingMode .cse0) ((_ to_fp 11 53) c_currentRoundingMode 1000000.0)) (not (fp.gt |c_ULTIMATE.start_FREXP_~r~0#1| |c_ULTIMATE.start_FREXP_~dd~0#1|)) (fp.gt .cse1 |c_ULTIMATE.start_FREXP_~dd~0#1|) (= |c_ULTIMATE.start_FREXP_~r~0#1| (fp.div c_currentRoundingMode .cse1 .cse2)) (= c_currentRoundingMode roundNearestTiesToEven)))) is different from true [2021-12-07 01:26:01,967 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-07 01:26:04,429 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-07 01:26:05,530 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-07 01:26:27,487 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 01:26:30,355 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 01:26:55,573 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-07 01:26:56,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:26:56,675 INFO L93 Difference]: Finished difference Result 44 states and 52 transitions. [2021-12-07 01:26:56,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-07 01:26:56,676 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 24 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-12-07 01:26:56,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:26:56,677 INFO L225 Difference]: With dead ends: 44 [2021-12-07 01:26:56,677 INFO L226 Difference]: Without dead ends: 34 [2021-12-07 01:26:56,678 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 248.0s TimeCoverageRelationStatistics Valid=124, Invalid=536, Unknown=18, NotChecked=378, Total=1056 [2021-12-07 01:26:56,679 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 45 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 0 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 54.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 144 IncrementalHoareTripleChecker+Unchecked, 55.3s IncrementalHoareTripleChecker+Time [2021-12-07 01:26:56,680 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 97 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 121 Invalid, 11 Unknown, 144 Unchecked, 55.3s Time] [2021-12-07 01:26:56,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-12-07 01:26:56,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2021-12-07 01:26:56,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.28125) internal successors, (41), 32 states have internal predecessors, (41), 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) [2021-12-07 01:26:56,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 41 transitions. [2021-12-07 01:26:56,687 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 41 transitions. Word has length 18 [2021-12-07 01:26:56,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:26:56,688 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 41 transitions. [2021-12-07 01:26:56,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 24 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:26:56,688 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 41 transitions. [2021-12-07 01:26:56,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-07 01:26:56,689 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:26:56,689 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:26:56,703 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72c44b6b-3880-4d7d-8080-12e373655b3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-12-07 01:26:56,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72c44b6b-3880-4d7d-8080-12e373655b3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 01:26:56,891 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:26:56,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:26:56,893 INFO L85 PathProgramCache]: Analyzing trace with hash 1672053773, now seen corresponding path program 1 times [2021-12-07 01:26:56,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 01:26:56,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [269055691] [2021-12-07 01:26:56,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:26:56,894 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 01:26:56,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72c44b6b-3880-4d7d-8080-12e373655b3d/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 01:26:56,897 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72c44b6b-3880-4d7d-8080-12e373655b3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 01:26:56,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72c44b6b-3880-4d7d-8080-12e373655b3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-12-07 01:26:57,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:26:57,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 26 conjunts are in the unsatisfiable core [2021-12-07 01:26:57,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:27:49,400 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:27:49,400 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:28:04,053 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.mul c_currentRoundingMode |c_ULTIMATE.start_LDEXP_~d#1| |c_ULTIMATE.start_LDEXP_~x~1#1|))) (and (fp.leq ((_ to_fp 11 53) c_currentRoundingMode .cse0) ((_ to_fp 11 53) c_currentRoundingMode 1000000.0)) (fp.geq .cse0 (_ +zero 8 24)))) is different from true