./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cbmc-regression/float21.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_926f91f5-c027-427f-a993-4379b247156a/bin/uautomizer-ZXIjhQolGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_926f91f5-c027-427f-a993-4379b247156a/bin/uautomizer-ZXIjhQolGL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_926f91f5-c027-427f-a993-4379b247156a/bin/uautomizer-ZXIjhQolGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_926f91f5-c027-427f-a993-4379b247156a/bin/uautomizer-ZXIjhQolGL/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float21.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_926f91f5-c027-427f-a993-4379b247156a/bin/uautomizer-ZXIjhQolGL/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_926f91f5-c027-427f-a993-4379b247156a/bin/uautomizer-ZXIjhQolGL --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 b3d24e4c1c847e769127c38fbc1869029d0f9f97538d9231a2c03e206a85bd0f --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 05:04:12,137 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 05:04:12,140 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 05:04:12,172 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 05:04:12,173 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 05:04:12,174 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 05:04:12,176 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 05:04:12,179 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 05:04:12,181 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 05:04:12,182 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 05:04:12,183 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 05:04:12,185 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 05:04:12,185 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 05:04:12,187 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 05:04:12,188 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 05:04:12,190 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 05:04:12,191 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 05:04:12,192 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 05:04:12,195 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 05:04:12,197 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 05:04:12,200 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 05:04:12,201 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 05:04:12,203 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 05:04:12,204 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 05:04:12,208 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 05:04:12,208 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 05:04:12,209 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 05:04:12,210 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 05:04:12,211 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 05:04:12,212 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 05:04:12,212 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 05:04:12,213 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 05:04:12,214 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 05:04:12,215 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 05:04:12,217 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 05:04:12,217 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 05:04:12,218 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 05:04:12,218 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 05:04:12,219 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 05:04:12,220 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 05:04:12,221 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 05:04:12,222 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_926f91f5-c027-427f-a993-4379b247156a/bin/uautomizer-ZXIjhQolGL/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-19 05:04:12,247 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 05:04:12,248 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 05:04:12,248 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-19 05:04:12,248 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-19 05:04:12,249 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 05:04:12,249 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 05:04:12,250 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 05:04:12,250 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 05:04:12,250 INFO L138 SettingsManager]: * Use SBE=true [2021-11-19 05:04:12,251 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 05:04:12,251 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 05:04:12,251 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 05:04:12,251 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 05:04:12,251 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 05:04:12,252 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 05:04:12,252 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 05:04:12,252 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 05:04:12,252 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 05:04:12,253 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 05:04:12,253 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 05:04:12,253 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 05:04:12,253 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 05:04:12,253 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 05:04:12,254 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 05:04:12,254 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 05:04:12,254 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 05:04:12,254 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 05:04:12,255 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 05:04:12,255 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-19 05:04:12,255 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 05:04:12,255 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-19 05:04:12,255 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-19 05:04:12,256 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 05:04:12,256 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 05:04:12,256 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_926f91f5-c027-427f-a993-4379b247156a/bin/uautomizer-ZXIjhQolGL/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_926f91f5-c027-427f-a993-4379b247156a/bin/uautomizer-ZXIjhQolGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b3d24e4c1c847e769127c38fbc1869029d0f9f97538d9231a2c03e206a85bd0f [2021-11-19 05:04:12,512 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 05:04:12,541 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 05:04:12,544 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 05:04:12,545 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 05:04:12,546 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 05:04:12,548 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_926f91f5-c027-427f-a993-4379b247156a/bin/uautomizer-ZXIjhQolGL/../../sv-benchmarks/c/floats-cbmc-regression/float21.i [2021-11-19 05:04:12,627 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_926f91f5-c027-427f-a993-4379b247156a/bin/uautomizer-ZXIjhQolGL/data/4fa6fe1e5/53346b1dc1a644688ed441a47563c30b/FLAG40d124e48 [2021-11-19 05:04:13,239 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 05:04:13,240 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_926f91f5-c027-427f-a993-4379b247156a/sv-benchmarks/c/floats-cbmc-regression/float21.i [2021-11-19 05:04:13,257 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_926f91f5-c027-427f-a993-4379b247156a/bin/uautomizer-ZXIjhQolGL/data/4fa6fe1e5/53346b1dc1a644688ed441a47563c30b/FLAG40d124e48 [2021-11-19 05:04:13,456 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_926f91f5-c027-427f-a993-4379b247156a/bin/uautomizer-ZXIjhQolGL/data/4fa6fe1e5/53346b1dc1a644688ed441a47563c30b [2021-11-19 05:04:13,459 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 05:04:13,460 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 05:04:13,463 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 05:04:13,463 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 05:04:13,467 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 05:04:13,468 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:04:13" (1/1) ... [2021-11-19 05:04:13,469 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5253cddc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:13, skipping insertion in model container [2021-11-19 05:04:13,469 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:04:13" (1/1) ... [2021-11-19 05:04:13,476 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 05:04:13,514 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 05:04:14,143 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator has thrown an exception: java.lang.UnsupportedOperationException: floating point operation not supported in non-bitprecise translation: fpclassify at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.constructOtherUnaryFloatOperation(IntegerTranslation.java:846) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.standardfunctions.StandardFunctionHandler.handleUnaryFloatFunction(StandardFunctionHandler.java:1761) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.standardfunctions.StandardFunctionHandler.translateStandardFunction(StandardFunctionHandler.java:235) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1438) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:267) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1111) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:276) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2400) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:303) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:736) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:282) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2400) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:303) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2400) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:303) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1606) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:229) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1076) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:232) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionDefinition(FunctionHandler.java:372) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1460) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:155) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.processTUchild(CHandler.java:3276) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2350) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:602) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:134) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.translate(MainTranslator.java:192) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.run(MainTranslator.java:115) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.(MainTranslator.java:93) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver.finish(CACSL2BoogieTranslatorObserver.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-19 05:04:14,148 INFO L158 Benchmark]: Toolchain (without parser) took 686.92ms. Allocated memory is still 138.4MB. Free memory was 102.2MB in the beginning and 112.7MB in the end (delta: -10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-19 05:04:14,151 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 88.1MB. Free memory was 58.6MB in the beginning and 58.6MB in the end (delta: 27.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 05:04:14,153 INFO L158 Benchmark]: CACSL2BoogieTranslator took 683.37ms. Allocated memory is still 138.4MB. Free memory was 101.9MB in the beginning and 112.7MB in the end (delta: -10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-19 05:04:14,156 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 88.1MB. Free memory was 58.6MB in the beginning and 58.6MB in the end (delta: 27.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 683.37ms. Allocated memory is still 138.4MB. Free memory was 101.9MB in the beginning and 112.7MB in the end (delta: -10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: UnsupportedOperationException: floating point operation not supported in non-bitprecise translation: fpclassify de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: UnsupportedOperationException: floating point operation not supported in non-bitprecise translation: fpclassify: de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.constructOtherUnaryFloatOperation(IntegerTranslation.java:846) RESULT: Ultimate could not prove your program: Toolchain returned no result. 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_926f91f5-c027-427f-a993-4379b247156a/bin/uautomizer-ZXIjhQolGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_926f91f5-c027-427f-a993-4379b247156a/bin/uautomizer-ZXIjhQolGL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_926f91f5-c027-427f-a993-4379b247156a/bin/uautomizer-ZXIjhQolGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_926f91f5-c027-427f-a993-4379b247156a/bin/uautomizer-ZXIjhQolGL/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float21.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_926f91f5-c027-427f-a993-4379b247156a/bin/uautomizer-ZXIjhQolGL/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_926f91f5-c027-427f-a993-4379b247156a/bin/uautomizer-ZXIjhQolGL --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 b3d24e4c1c847e769127c38fbc1869029d0f9f97538d9231a2c03e206a85bd0f --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 05:04:16,557 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 05:04:16,559 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 05:04:16,612 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 05:04:16,612 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 05:04:16,618 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 05:04:16,620 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 05:04:16,628 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 05:04:16,631 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 05:04:16,639 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 05:04:16,640 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 05:04:16,642 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 05:04:16,643 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 05:04:16,646 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 05:04:16,649 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 05:04:16,655 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 05:04:16,669 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 05:04:16,670 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 05:04:16,672 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 05:04:16,675 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 05:04:16,677 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 05:04:16,679 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 05:04:16,683 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 05:04:16,685 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 05:04:16,695 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 05:04:16,695 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 05:04:16,696 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 05:04:16,698 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 05:04:16,698 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 05:04:16,700 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 05:04:16,700 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 05:04:16,701 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 05:04:16,703 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 05:04:16,704 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 05:04:16,706 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 05:04:16,706 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 05:04:16,707 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 05:04:16,707 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 05:04:16,708 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 05:04:16,710 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 05:04:16,710 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 05:04:16,711 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_926f91f5-c027-427f-a993-4379b247156a/bin/uautomizer-ZXIjhQolGL/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-11-19 05:04:16,759 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 05:04:16,759 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 05:04:16,760 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-19 05:04:16,760 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-19 05:04:16,761 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 05:04:16,761 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 05:04:16,763 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 05:04:16,763 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 05:04:16,763 INFO L138 SettingsManager]: * Use SBE=true [2021-11-19 05:04:16,764 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 05:04:16,765 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 05:04:16,765 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 05:04:16,765 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 05:04:16,765 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 05:04:16,766 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 05:04:16,766 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 05:04:16,766 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 05:04:16,766 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 05:04:16,766 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 05:04:16,766 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 05:04:16,767 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 05:04:16,767 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 05:04:16,767 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 05:04:16,767 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 05:04:16,767 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 05:04:16,768 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 05:04:16,768 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 05:04:16,768 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 05:04:16,768 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 05:04:16,768 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-19 05:04:16,769 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 05:04:16,769 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-19 05:04:16,769 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-19 05:04:16,769 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 05:04:16,770 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 05:04:16,770 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 05:04:16,770 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_926f91f5-c027-427f-a993-4379b247156a/bin/uautomizer-ZXIjhQolGL/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_926f91f5-c027-427f-a993-4379b247156a/bin/uautomizer-ZXIjhQolGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b3d24e4c1c847e769127c38fbc1869029d0f9f97538d9231a2c03e206a85bd0f [2021-11-19 05:04:17,196 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 05:04:17,219 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 05:04:17,222 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 05:04:17,224 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 05:04:17,225 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 05:04:17,226 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_926f91f5-c027-427f-a993-4379b247156a/bin/uautomizer-ZXIjhQolGL/../../sv-benchmarks/c/floats-cbmc-regression/float21.i [2021-11-19 05:04:17,303 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_926f91f5-c027-427f-a993-4379b247156a/bin/uautomizer-ZXIjhQolGL/data/afa3bbfbb/ded652dbcdff4a328fc248e3ae16c5b8/FLAGf7f841396 [2021-11-19 05:04:18,023 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 05:04:18,024 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_926f91f5-c027-427f-a993-4379b247156a/sv-benchmarks/c/floats-cbmc-regression/float21.i [2021-11-19 05:04:18,043 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_926f91f5-c027-427f-a993-4379b247156a/bin/uautomizer-ZXIjhQolGL/data/afa3bbfbb/ded652dbcdff4a328fc248e3ae16c5b8/FLAGf7f841396 [2021-11-19 05:04:18,258 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_926f91f5-c027-427f-a993-4379b247156a/bin/uautomizer-ZXIjhQolGL/data/afa3bbfbb/ded652dbcdff4a328fc248e3ae16c5b8 [2021-11-19 05:04:18,261 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 05:04:18,263 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 05:04:18,264 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 05:04:18,264 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 05:04:18,268 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 05:04:18,269 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:04:18" (1/1) ... [2021-11-19 05:04:18,270 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4401eee5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:18, skipping insertion in model container [2021-11-19 05:04:18,271 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:04:18" (1/1) ... [2021-11-19 05:04:18,279 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 05:04:18,316 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 05:04:19,105 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_926f91f5-c027-427f-a993-4379b247156a/sv-benchmarks/c/floats-cbmc-regression/float21.i[40548,40561] [2021-11-19 05:04:19,117 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_926f91f5-c027-427f-a993-4379b247156a/sv-benchmarks/c/floats-cbmc-regression/float21.i[40793,40806] [2021-11-19 05:04:19,121 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_926f91f5-c027-427f-a993-4379b247156a/sv-benchmarks/c/floats-cbmc-regression/float21.i[41044,41057] [2021-11-19 05:04:19,124 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_926f91f5-c027-427f-a993-4379b247156a/sv-benchmarks/c/floats-cbmc-regression/float21.i[41293,41306] [2021-11-19 05:04:19,125 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_926f91f5-c027-427f-a993-4379b247156a/sv-benchmarks/c/floats-cbmc-regression/float21.i[41371,41384] [2021-11-19 05:04:19,127 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_926f91f5-c027-427f-a993-4379b247156a/sv-benchmarks/c/floats-cbmc-regression/float21.i[41469,41482] [2021-11-19 05:04:19,128 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_926f91f5-c027-427f-a993-4379b247156a/sv-benchmarks/c/floats-cbmc-regression/float21.i[41539,41552] [2021-11-19 05:04:19,129 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_926f91f5-c027-427f-a993-4379b247156a/sv-benchmarks/c/floats-cbmc-regression/float21.i[41607,41620] [2021-11-19 05:04:19,130 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_926f91f5-c027-427f-a993-4379b247156a/sv-benchmarks/c/floats-cbmc-regression/float21.i[41705,41718] [2021-11-19 05:04:19,131 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_926f91f5-c027-427f-a993-4379b247156a/sv-benchmarks/c/floats-cbmc-regression/float21.i[41799,41812] [2021-11-19 05:04:19,133 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_926f91f5-c027-427f-a993-4379b247156a/sv-benchmarks/c/floats-cbmc-regression/float21.i[41906,41919] [2021-11-19 05:04:19,135 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_926f91f5-c027-427f-a993-4379b247156a/sv-benchmarks/c/floats-cbmc-regression/float21.i[41974,41987] [2021-11-19 05:04:19,141 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_926f91f5-c027-427f-a993-4379b247156a/sv-benchmarks/c/floats-cbmc-regression/float21.i[42220,42233] [2021-11-19 05:04:19,148 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 05:04:19,160 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 05:04:19,202 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_926f91f5-c027-427f-a993-4379b247156a/sv-benchmarks/c/floats-cbmc-regression/float21.i[40548,40561] [2021-11-19 05:04:19,209 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_926f91f5-c027-427f-a993-4379b247156a/sv-benchmarks/c/floats-cbmc-regression/float21.i[40793,40806] [2021-11-19 05:04:19,212 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_926f91f5-c027-427f-a993-4379b247156a/sv-benchmarks/c/floats-cbmc-regression/float21.i[41044,41057] [2021-11-19 05:04:19,221 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_926f91f5-c027-427f-a993-4379b247156a/sv-benchmarks/c/floats-cbmc-regression/float21.i[41293,41306] [2021-11-19 05:04:19,222 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_926f91f5-c027-427f-a993-4379b247156a/sv-benchmarks/c/floats-cbmc-regression/float21.i[41371,41384] [2021-11-19 05:04:19,224 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_926f91f5-c027-427f-a993-4379b247156a/sv-benchmarks/c/floats-cbmc-regression/float21.i[41469,41482] [2021-11-19 05:04:19,230 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_926f91f5-c027-427f-a993-4379b247156a/sv-benchmarks/c/floats-cbmc-regression/float21.i[41539,41552] [2021-11-19 05:04:19,231 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_926f91f5-c027-427f-a993-4379b247156a/sv-benchmarks/c/floats-cbmc-regression/float21.i[41607,41620] [2021-11-19 05:04:19,232 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_926f91f5-c027-427f-a993-4379b247156a/sv-benchmarks/c/floats-cbmc-regression/float21.i[41705,41718] [2021-11-19 05:04:19,235 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_926f91f5-c027-427f-a993-4379b247156a/sv-benchmarks/c/floats-cbmc-regression/float21.i[41799,41812] [2021-11-19 05:04:19,238 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_926f91f5-c027-427f-a993-4379b247156a/sv-benchmarks/c/floats-cbmc-regression/float21.i[41906,41919] [2021-11-19 05:04:19,239 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_926f91f5-c027-427f-a993-4379b247156a/sv-benchmarks/c/floats-cbmc-regression/float21.i[41974,41987] [2021-11-19 05:04:19,244 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_926f91f5-c027-427f-a993-4379b247156a/sv-benchmarks/c/floats-cbmc-regression/float21.i[42220,42233] [2021-11-19 05:04:19,245 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 05:04:19,431 INFO L208 MainTranslator]: Completed translation [2021-11-19 05:04:19,431 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:19 WrapperNode [2021-11-19 05:04:19,432 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 05:04:19,434 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 05:04:19,434 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 05:04:19,435 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 05:04:19,442 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:19" (1/1) ... [2021-11-19 05:04:19,479 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:19" (1/1) ... [2021-11-19 05:04:19,508 INFO L137 Inliner]: procedures = 449, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 64 [2021-11-19 05:04:19,510 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 05:04:19,511 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 05:04:19,512 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 05:04:19,512 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 05:04:19,522 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:19" (1/1) ... [2021-11-19 05:04:19,523 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:19" (1/1) ... [2021-11-19 05:04:19,536 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:19" (1/1) ... [2021-11-19 05:04:19,538 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:19" (1/1) ... [2021-11-19 05:04:19,546 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:19" (1/1) ... [2021-11-19 05:04:19,549 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:19" (1/1) ... [2021-11-19 05:04:19,552 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:19" (1/1) ... [2021-11-19 05:04:19,556 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 05:04:19,557 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 05:04:19,557 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 05:04:19,557 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 05:04:19,558 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:19" (1/1) ... [2021-11-19 05:04:19,566 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 05:04:19,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_926f91f5-c027-427f-a993-4379b247156a/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:04:19,602 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_926f91f5-c027-427f-a993-4379b247156a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 05:04:19,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_926f91f5-c027-427f-a993-4379b247156a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 05:04:19,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 05:04:19,654 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 05:04:19,654 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 05:04:19,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 05:04:19,654 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-19 05:04:19,654 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-19 05:04:19,762 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 05:04:19,764 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 05:04:29,540 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 05:04:29,547 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 05:04:29,549 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-19 05:04:29,552 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:04:29 BoogieIcfgContainer [2021-11-19 05:04:29,553 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 05:04:29,558 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 05:04:29,558 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 05:04:29,562 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 05:04:29,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:04:18" (1/3) ... [2021-11-19 05:04:29,563 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7581d080 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:04:29, skipping insertion in model container [2021-11-19 05:04:29,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:19" (2/3) ... [2021-11-19 05:04:29,565 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7581d080 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:04:29, skipping insertion in model container [2021-11-19 05:04:29,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:04:29" (3/3) ... [2021-11-19 05:04:29,567 INFO L111 eAbstractionObserver]: Analyzing ICFG float21.i [2021-11-19 05:04:29,573 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 05:04:29,573 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2021-11-19 05:04:29,628 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 05:04:29,634 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-19 05:04:29,635 INFO L340 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2021-11-19 05:04:29,652 INFO L276 IsEmpty]: Start isEmpty. Operand has 55 states, 37 states have (on average 1.7297297297297298) internal successors, (64), 50 states have internal predecessors, (64), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-19 05:04:29,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-19 05:04:29,656 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:04:29,656 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-19 05:04:29,657 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-19 05:04:29,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:04:29,663 INFO L85 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2021-11-19 05:04:29,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:04:29,676 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2010780248] [2021-11-19 05:04:29,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:04:29,677 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:04:29,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_926f91f5-c027-427f-a993-4379b247156a/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:04:29,684 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_926f91f5-c027-427f-a993-4379b247156a/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:04:29,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_926f91f5-c027-427f-a993-4379b247156a/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 05:04:29,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:04:29,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 05:04:29,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:04:29,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:04:29,882 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:04:29,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:04:29,936 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:04:29,936 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2010780248] [2021-11-19 05:04:29,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2010780248] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:04:29,937 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:04:29,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 05:04:29,939 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750867898] [2021-11-19 05:04:29,940 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:04:29,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 05:04:29,945 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:04:29,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 05:04:29,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 05:04:29,977 INFO L87 Difference]: Start difference. First operand has 55 states, 37 states have (on average 1.7297297297297298) internal successors, (64), 50 states have internal predecessors, (64), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:04:32,453 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 05:04:34,524 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 05:04:36,604 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 05:04:36,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:04:36,608 INFO L93 Difference]: Finished difference Result 105 states and 137 transitions. [2021-11-19 05:04:36,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 05:04:36,631 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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 4 [2021-11-19 05:04:36,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:04:36,639 INFO L225 Difference]: With dead ends: 105 [2021-11-19 05:04:36,640 INFO L226 Difference]: Without dead ends: 49 [2021-11-19 05:04:36,643 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 05:04:36,647 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 0 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 1 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2021-11-19 05:04:36,648 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 93 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 1 Unknown, 1 Unchecked, 6.6s Time] [2021-11-19 05:04:36,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-11-19 05:04:36,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2021-11-19 05:04:36,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 33 states have (on average 1.3333333333333333) internal successors, (44), 44 states have internal predecessors, (44), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-19 05:04:36,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 50 transitions. [2021-11-19 05:04:36,691 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 50 transitions. Word has length 4 [2021-11-19 05:04:36,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:04:36,691 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 50 transitions. [2021-11-19 05:04:36,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:04:36,692 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 50 transitions. [2021-11-19 05:04:36,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-19 05:04:36,693 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:04:36,694 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:04:36,720 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_926f91f5-c027-427f-a993-4379b247156a/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 05:04:36,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_926f91f5-c027-427f-a993-4379b247156a/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:04:36,916 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-19 05:04:36,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:04:36,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1079818240, now seen corresponding path program 1 times [2021-11-19 05:04:36,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:04:36,918 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1479060898] [2021-11-19 05:04:36,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:04:36,919 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:04:36,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_926f91f5-c027-427f-a993-4379b247156a/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:04:36,920 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_926f91f5-c027-427f-a993-4379b247156a/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:04:36,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_926f91f5-c027-427f-a993-4379b247156a/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 05:04:36,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:04:36,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 05:04:36,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:04:37,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:04:37,955 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:04:41,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:04:41,042 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:04:41,042 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1479060898] [2021-11-19 05:04:41,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1479060898] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:04:41,042 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:04:41,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2021-11-19 05:04:41,042 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204786929] [2021-11-19 05:04:41,043 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:04:41,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 05:04:41,045 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:04:41,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 05:04:41,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-19 05:04:41,046 INFO L87 Difference]: Start difference. First operand 49 states and 50 transitions. Second operand has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 7 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 05:04:42,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:04:42,454 INFO L93 Difference]: Finished difference Result 49 states and 50 transitions. [2021-11-19 05:04:42,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 05:04:42,466 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 7 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 11 [2021-11-19 05:04:42,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:04:42,467 INFO L225 Difference]: With dead ends: 49 [2021-11-19 05:04:42,468 INFO L226 Difference]: Without dead ends: 47 [2021-11-19 05:04:42,468 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-19 05:04:42,470 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 2 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 20 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-19 05:04:42,470 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 171 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 20 Unchecked, 1.4s Time] [2021-11-19 05:04:42,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-11-19 05:04:42,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2021-11-19 05:04:42,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 32 states have (on average 1.3125) internal successors, (42), 42 states have internal predecessors, (42), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-19 05:04:42,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 48 transitions. [2021-11-19 05:04:42,480 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 48 transitions. Word has length 11 [2021-11-19 05:04:42,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:04:42,481 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 48 transitions. [2021-11-19 05:04:42,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 7 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 05:04:42,481 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 48 transitions. [2021-11-19 05:04:42,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-19 05:04:42,482 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:04:42,482 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:04:42,496 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_926f91f5-c027-427f-a993-4379b247156a/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 05:04:42,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_926f91f5-c027-427f-a993-4379b247156a/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:04:42,691 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-19 05:04:42,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:04:42,692 INFO L85 PathProgramCache]: Analyzing trace with hash -885368843, now seen corresponding path program 1 times [2021-11-19 05:04:42,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:04:42,692 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [873223735] [2021-11-19 05:04:42,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:04:42,693 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:04:42,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_926f91f5-c027-427f-a993-4379b247156a/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:04:42,696 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_926f91f5-c027-427f-a993-4379b247156a/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:04:42,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_926f91f5-c027-427f-a993-4379b247156a/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 05:04:42,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:04:42,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 05:04:42,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:04:42,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:04:42,827 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:04:42,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:04:42,910 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:04:42,910 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [873223735] [2021-11-19 05:04:42,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [873223735] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:04:42,910 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:04:42,910 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 05:04:42,910 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933432284] [2021-11-19 05:04:42,911 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:04:42,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 05:04:42,911 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:04:42,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 05:04:42,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 05:04:42,912 INFO L87 Difference]: Start difference. First operand 47 states and 48 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 05:04:42,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:04:42,917 INFO L93 Difference]: Finished difference Result 47 states and 48 transitions. [2021-11-19 05:04:42,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 05:04:42,917 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 12 [2021-11-19 05:04:42,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:04:42,918 INFO L225 Difference]: With dead ends: 47 [2021-11-19 05:04:42,919 INFO L226 Difference]: Without dead ends: 45 [2021-11-19 05:04:42,919 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 05:04:42,921 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 0 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 15 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 05:04:42,922 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 97 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 15 Unchecked, 0.0s Time] [2021-11-19 05:04:42,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-11-19 05:04:42,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2021-11-19 05:04:42,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 40 states have internal predecessors, (40), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-19 05:04:42,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2021-11-19 05:04:42,929 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 12 [2021-11-19 05:04:42,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:04:42,930 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2021-11-19 05:04:42,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 05:04:42,930 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2021-11-19 05:04:42,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-19 05:04:42,931 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:04:42,931 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:04:42,960 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_926f91f5-c027-427f-a993-4379b247156a/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 05:04:43,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_926f91f5-c027-427f-a993-4379b247156a/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:04:43,151 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-19 05:04:43,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:04:43,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1435316947, now seen corresponding path program 1 times [2021-11-19 05:04:43,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:04:43,152 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2145319005] [2021-11-19 05:04:43,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:04:43,153 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:04:43,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_926f91f5-c027-427f-a993-4379b247156a/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:04:43,153 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_926f91f5-c027-427f-a993-4379b247156a/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:04:43,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_926f91f5-c027-427f-a993-4379b247156a/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 05:04:43,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:04:43,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 05:04:43,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:04:43,823 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 05:04:43,823 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:06:01,484 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 05:06:01,484 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:06:01,485 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2145319005] [2021-11-19 05:06:01,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2145319005] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:06:01,485 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:06:01,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2021-11-19 05:06:01,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765326677] [2021-11-19 05:06:01,485 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:06:01,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 05:06:01,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:06:01,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 05:06:01,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-19 05:06:01,486 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 7 states have internal predecessors, (24), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-19 05:06:07,529 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 05:06:09,544 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 05:06:11,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:06:11,378 INFO L93 Difference]: Finished difference Result 45 states and 46 transitions. [2021-11-19 05:06:11,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 05:06:11,393 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 7 states have internal predecessors, (24), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) Word has length 19 [2021-11-19 05:06:11,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:06:11,393 INFO L225 Difference]: With dead ends: 45 [2021-11-19 05:06:11,394 INFO L226 Difference]: Without dead ends: 41 [2021-11-19 05:06:11,394 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-19 05:06:11,395 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 30 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 5 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2021-11-19 05:06:11,396 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 47 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 80 Invalid, 0 Unknown, 5 Unchecked, 9.3s Time] [2021-11-19 05:06:11,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-11-19 05:06:11,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2021-11-19 05:06:11,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 29 states have (on average 1.2413793103448276) internal successors, (36), 36 states have internal predecessors, (36), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-19 05:06:11,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2021-11-19 05:06:11,401 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 19 [2021-11-19 05:06:11,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:06:11,402 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2021-11-19 05:06:11,402 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 7 states have internal predecessors, (24), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-19 05:06:11,402 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2021-11-19 05:06:11,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-19 05:06:11,403 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:06:11,403 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:06:11,417 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_926f91f5-c027-427f-a993-4379b247156a/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 05:06:11,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_926f91f5-c027-427f-a993-4379b247156a/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:06:11,609 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-19 05:06:11,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:06:11,610 INFO L85 PathProgramCache]: Analyzing trace with hash 1545156500, now seen corresponding path program 1 times [2021-11-19 05:06:11,610 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:06:11,610 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1508976216] [2021-11-19 05:06:11,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:06:11,610 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:06:11,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_926f91f5-c027-427f-a993-4379b247156a/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:06:11,611 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_926f91f5-c027-427f-a993-4379b247156a/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:06:11,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_926f91f5-c027-427f-a993-4379b247156a/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 05:06:11,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:06:11,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 05:06:11,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:06:11,817 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-19 05:06:11,817 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:06:11,919 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-19 05:06:11,920 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:06:11,920 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1508976216] [2021-11-19 05:06:11,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1508976216] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:06:11,920 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:06:11,920 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 05:06:11,920 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677570274] [2021-11-19 05:06:11,920 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:06:11,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 05:06:11,921 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:06:11,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 05:06:11,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 05:06:11,922 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-19 05:06:14,349 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 05:06:16,076 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 05:06:17,464 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 05:06:20,408 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 05:06:22,479 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 05:06:23,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:06:23,022 INFO L93 Difference]: Finished difference Result 41 states and 42 transitions. [2021-11-19 05:06:23,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 05:06:23,031 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 20 [2021-11-19 05:06:23,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:06:23,032 INFO L225 Difference]: With dead ends: 41 [2021-11-19 05:06:23,032 INFO L226 Difference]: Without dead ends: 39 [2021-11-19 05:06:23,032 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 05:06:23,033 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 0 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 5 IncrementalHoareTripleChecker+Unchecked, 11.1s IncrementalHoareTripleChecker+Time [2021-11-19 05:06:23,034 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 52 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 3 Unknown, 5 Unchecked, 11.1s Time] [2021-11-19 05:06:23,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-11-19 05:06:23,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2021-11-19 05:06:23,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 34 states have internal predecessors, (34), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-19 05:06:23,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2021-11-19 05:06:23,040 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 20 [2021-11-19 05:06:23,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:06:23,044 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2021-11-19 05:06:23,044 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-19 05:06:23,044 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2021-11-19 05:06:23,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-19 05:06:23,045 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:06:23,046 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:06:23,058 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_926f91f5-c027-427f-a993-4379b247156a/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 05:06:23,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_926f91f5-c027-427f-a993-4379b247156a/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:06:23,248 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-19 05:06:23,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:06:23,249 INFO L85 PathProgramCache]: Analyzing trace with hash 655215355, now seen corresponding path program 1 times [2021-11-19 05:06:23,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:06:23,249 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2144788340] [2021-11-19 05:06:23,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:06:23,249 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:06:23,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_926f91f5-c027-427f-a993-4379b247156a/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:06:23,250 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_926f91f5-c027-427f-a993-4379b247156a/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:06:23,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_926f91f5-c027-427f-a993-4379b247156a/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 05:06:23,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:06:23,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 05:06:23,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:06:23,474 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-19 05:06:23,474 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:06:31,206 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-19 05:06:31,207 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:06:31,207 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2144788340] [2021-11-19 05:06:31,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2144788340] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:06:31,207 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:06:31,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 05:06:31,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421046216] [2021-11-19 05:06:31,207 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:06:31,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 05:06:31,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:06:31,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 05:06:31,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 05:06:31,209 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-19 05:06:35,317 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 05:06:37,008 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 05:06:38,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:06:38,203 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2021-11-19 05:06:38,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 05:06:38,217 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 21 [2021-11-19 05:06:38,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:06:38,218 INFO L225 Difference]: With dead ends: 39 [2021-11-19 05:06:38,218 INFO L226 Difference]: Without dead ends: 35 [2021-11-19 05:06:38,218 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 05:06:38,220 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 18 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2021-11-19 05:06:38,220 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 25 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2021-11-19 05:06:38,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-11-19 05:06:38,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2021-11-19 05:06:38,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 26 states have (on average 1.1538461538461537) internal successors, (30), 30 states have internal predecessors, (30), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-19 05:06:38,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2021-11-19 05:06:38,228 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 21 [2021-11-19 05:06:38,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:06:38,229 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2021-11-19 05:06:38,229 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-19 05:06:38,229 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2021-11-19 05:06:38,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-19 05:06:38,230 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:06:38,231 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:06:38,246 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_926f91f5-c027-427f-a993-4379b247156a/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-11-19 05:06:38,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_926f91f5-c027-427f-a993-4379b247156a/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:06:38,437 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-19 05:06:38,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:06:38,438 INFO L85 PathProgramCache]: Analyzing trace with hash -1163156356, now seen corresponding path program 1 times [2021-11-19 05:06:38,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:06:38,439 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [634697840] [2021-11-19 05:06:38,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:06:38,439 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:06:38,440 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_926f91f5-c027-427f-a993-4379b247156a/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:06:38,441 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_926f91f5-c027-427f-a993-4379b247156a/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:06:38,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_926f91f5-c027-427f-a993-4379b247156a/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 05:06:38,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:06:38,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 05:06:38,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:06:38,762 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-19 05:06:38,763 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:06:41,950 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-19 05:06:41,950 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:06:41,950 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [634697840] [2021-11-19 05:06:41,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [634697840] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:06:41,951 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:06:41,951 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 05:06:41,951 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941095940] [2021-11-19 05:06:41,951 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:06:41,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 05:06:41,952 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:06:41,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 05:06:41,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 05:06:41,953 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-19 05:06:45,159 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 05:06:46,436 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 05:06:47,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:06:47,276 INFO L93 Difference]: Finished difference Result 35 states and 36 transitions. [2021-11-19 05:06:47,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 05:06:47,289 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 22 [2021-11-19 05:06:47,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:06:47,289 INFO L225 Difference]: With dead ends: 35 [2021-11-19 05:06:47,289 INFO L226 Difference]: Without dead ends: 33 [2021-11-19 05:06:47,290 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 05:06:47,291 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 30 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2021-11-19 05:06:47,291 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 22 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2021-11-19 05:06:47,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-11-19 05:06:47,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2021-11-19 05:06:47,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 25 states have (on average 1.12) internal successors, (28), 28 states have internal predecessors, (28), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-19 05:06:47,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2021-11-19 05:06:47,297 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 22 [2021-11-19 05:06:47,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:06:47,298 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2021-11-19 05:06:47,298 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-19 05:06:47,298 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2021-11-19 05:06:47,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-19 05:06:47,299 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:06:47,300 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:06:47,312 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_926f91f5-c027-427f-a993-4379b247156a/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-19 05:06:47,505 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_926f91f5-c027-427f-a993-4379b247156a/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:06:47,509 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-19 05:06:47,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:06:47,509 INFO L85 PathProgramCache]: Analyzing trace with hash -1698104541, now seen corresponding path program 1 times [2021-11-19 05:06:47,510 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:06:47,510 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [841085679] [2021-11-19 05:06:47,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:06:47,510 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:06:47,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_926f91f5-c027-427f-a993-4379b247156a/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:06:47,511 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_926f91f5-c027-427f-a993-4379b247156a/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:06:47,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_926f91f5-c027-427f-a993-4379b247156a/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 05:06:47,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:06:47,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 05:06:47,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:06:47,747 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-19 05:06:47,748 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:06:50,922 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-19 05:06:50,922 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:06:50,922 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [841085679] [2021-11-19 05:06:50,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [841085679] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:06:50,923 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:06:50,923 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 05:06:50,923 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18210128] [2021-11-19 05:06:50,923 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:06:50,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 05:06:50,924 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:06:50,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 05:06:50,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 05:06:50,925 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-19 05:06:55,607 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 05:06:56,954 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 05:06:58,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:06:58,015 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2021-11-19 05:06:58,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 05:06:58,029 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 23 [2021-11-19 05:06:58,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:06:58,030 INFO L225 Difference]: With dead ends: 33 [2021-11-19 05:06:58,030 INFO L226 Difference]: Without dead ends: 31 [2021-11-19 05:06:58,030 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 05:06:58,031 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 12 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2021-11-19 05:06:58,032 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 25 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2021-11-19 05:06:58,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-11-19 05:06:58,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-11-19 05:06:58,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 26 states have internal predecessors, (26), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-19 05:06:58,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2021-11-19 05:06:58,037 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 23 [2021-11-19 05:06:58,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:06:58,037 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2021-11-19 05:06:58,037 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-19 05:06:58,037 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2021-11-19 05:06:58,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-19 05:06:58,038 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:06:58,038 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:06:58,049 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_926f91f5-c027-427f-a993-4379b247156a/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-19 05:06:58,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_926f91f5-c027-427f-a993-4379b247156a/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:06:58,239 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-19 05:06:58,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:06:58,240 INFO L85 PathProgramCache]: Analyzing trace with hash -2103462324, now seen corresponding path program 1 times [2021-11-19 05:06:58,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:06:58,240 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [698621176] [2021-11-19 05:06:58,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:06:58,240 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:06:58,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_926f91f5-c027-427f-a993-4379b247156a/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:06:58,241 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_926f91f5-c027-427f-a993-4379b247156a/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:06:58,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_926f91f5-c027-427f-a993-4379b247156a/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-19 05:06:58,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:06:58,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 05:06:58,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:06:59,004 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-19 05:06:59,005 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:07:05,092 WARN L838 $PredicateComparison]: unable to prove that (fp.leq (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_main_~smallestNormalFloat~0#1|) |c_ULTIMATE.start_main_~v~0#1|) (fp.sub c_currentRoundingMode |c_ULTIMATE.start_main_~v~0#1| ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_main_~largestSubnormalFloat~0#1|))) is different from false [2021-11-19 05:07:07,119 WARN L860 $PredicateComparison]: unable to prove that (fp.leq (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_main_~smallestNormalFloat~0#1|) |c_ULTIMATE.start_main_~v~0#1|) (fp.sub c_currentRoundingMode |c_ULTIMATE.start_main_~v~0#1| ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_main_~largestSubnormalFloat~0#1|))) is different from true [2021-11-19 05:08:03,588 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-19 05:08:03,588 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:08:03,588 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [698621176] [2021-11-19 05:08:03,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [698621176] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:08:03,589 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:08:03,589 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-19 05:08:03,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149564382] [2021-11-19 05:08:03,589 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:08:03,590 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 05:08:03,590 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:08:03,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 05:08:03,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=6, Unknown=2, NotChecked=4, Total=20 [2021-11-19 05:08:03,591 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-19 05:08:05,630 WARN L860 $PredicateComparison]: unable to prove that (and (fp.leq (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_main_~smallestNormalFloat~0#1|) |c_ULTIMATE.start_main_~v~0#1|) (fp.sub c_currentRoundingMode |c_ULTIMATE.start_main_~v~0#1| ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_main_~largestSubnormalFloat~0#1|))) (= ((_ to_fp 11 53) c_currentRoundingMode (/ 33554431.0 2854495385411919762116571938898990272765493248.0)) |c_ULTIMATE.start_main_~v~0#1|) (= |c_ULTIMATE.start_main_~smallestNormalFloat~0#1| ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 85070591730234615865843651857942052864.0))) (= ((_ to_fp 8 24) c_currentRoundingMode (/ 8388607.0 713623846352979940529142984724747568191373312.0)) |c_ULTIMATE.start_main_~largestSubnormalFloat~0#1|) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-11-19 05:08:06,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:08:06,557 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2021-11-19 05:08:06,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 05:08:06,571 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 26 [2021-11-19 05:08:06,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:08:06,572 INFO L225 Difference]: With dead ends: 35 [2021-11-19 05:08:06,572 INFO L226 Difference]: Without dead ends: 33 [2021-11-19 05:08:06,573 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=10, Invalid=7, Unknown=3, NotChecked=10, Total=30 [2021-11-19 05:08:06,573 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 1 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 31 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-19 05:08:06,574 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 32 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 31 Unchecked, 0.9s Time] [2021-11-19 05:08:06,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-11-19 05:08:06,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2021-11-19 05:08:06,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 26 states have (on average 1.0384615384615385) internal successors, (27), 27 states have internal predecessors, (27), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-19 05:08:06,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2021-11-19 05:08:06,581 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 26 [2021-11-19 05:08:06,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:08:06,581 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2021-11-19 05:08:06,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-19 05:08:06,582 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2021-11-19 05:08:06,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-19 05:08:06,583 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:08:06,583 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:08:06,601 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_926f91f5-c027-427f-a993-4379b247156a/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-19 05:08:06,792 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_926f91f5-c027-427f-a993-4379b247156a/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:08:06,792 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-19 05:08:06,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:08:06,793 INFO L85 PathProgramCache]: Analyzing trace with hash -782818445, now seen corresponding path program 1 times [2021-11-19 05:08:06,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:08:06,793 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1944613542] [2021-11-19 05:08:06,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:08:06,794 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:08:06,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_926f91f5-c027-427f-a993-4379b247156a/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:08:06,795 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_926f91f5-c027-427f-a993-4379b247156a/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:08:06,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_926f91f5-c027-427f-a993-4379b247156a/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-19 05:08:07,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:08:07,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 05:08:07,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:08:07,566 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-19 05:08:07,566 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:08:12,685 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-19 05:08:12,685 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:08:12,685 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1944613542] [2021-11-19 05:08:12,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1944613542] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:08:12,686 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:08:12,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 6 [2021-11-19 05:08:12,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560435268] [2021-11-19 05:08:12,687 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:08:12,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 05:08:12,687 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:08:12,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 05:08:12,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-19 05:08:12,688 INFO L87 Difference]: Start difference. First operand 33 states and 33 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-19 05:08:16,761 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 05:08:18,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:08:18,037 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2021-11-19 05:08:18,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 05:08:18,053 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 27 [2021-11-19 05:08:18,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:08:18,054 INFO L225 Difference]: With dead ends: 33 [2021-11-19 05:08:18,054 INFO L226 Difference]: Without dead ends: 31 [2021-11-19 05:08:18,055 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-19 05:08:18,056 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 28 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2021-11-19 05:08:18,056 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 19 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2021-11-19 05:08:18,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-11-19 05:08:18,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-11-19 05:08:18,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 25 states have (on average 1.0) internal successors, (25), 25 states have internal predecessors, (25), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-19 05:08:18,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2021-11-19 05:08:18,063 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 27 [2021-11-19 05:08:18,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:08:18,065 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2021-11-19 05:08:18,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-19 05:08:18,065 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2021-11-19 05:08:18,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-19 05:08:18,066 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:08:18,066 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:08:18,082 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_926f91f5-c027-427f-a993-4379b247156a/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (11)] Ended with exit code 0 [2021-11-19 05:08:18,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_926f91f5-c027-427f-a993-4379b247156a/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:08:18,267 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-19 05:08:18,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:08:18,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1859738407, now seen corresponding path program 1 times [2021-11-19 05:08:18,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:08:18,268 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [440611236] [2021-11-19 05:08:18,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:08:18,268 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:08:18,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_926f91f5-c027-427f-a993-4379b247156a/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:08:18,269 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_926f91f5-c027-427f-a993-4379b247156a/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:08:18,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_926f91f5-c027-427f-a993-4379b247156a/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-19 05:08:18,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:08:18,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 05:08:18,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:08:29,868 WARN L838 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main_~f~0#1| (_ FloatingPoint 8 24))) (and (fp.isSubnormal |ULTIMATE.start_main_~f~0#1|) (not (fp.eq ((_ to_fp 8 24) roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven |ULTIMATE.start_main_~f~0#1|)) |ULTIMATE.start_main_~f~0#1|)))) is different from false [2021-11-19 05:08:31,881 WARN L860 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main_~f~0#1| (_ FloatingPoint 8 24))) (and (fp.isSubnormal |ULTIMATE.start_main_~f~0#1|) (not (fp.eq ((_ to_fp 8 24) roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven |ULTIMATE.start_main_~f~0#1|)) |ULTIMATE.start_main_~f~0#1|)))) is different from true [2021-11-19 05:08:31,881 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-19 05:08:31,881 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:09:00,071 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~f~0#1| (_ FloatingPoint 8 24))) (or (fp.isNaN |ULTIMATE.start_main_~f~0#1|) (fp.eq ((_ to_fp 8 24) c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode |ULTIMATE.start_main_~f~0#1|)) |ULTIMATE.start_main_~f~0#1|))) is different from false [2021-11-19 05:09:02,084 WARN L860 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~f~0#1| (_ FloatingPoint 8 24))) (or (fp.isNaN |ULTIMATE.start_main_~f~0#1|) (fp.eq ((_ to_fp 8 24) c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode |ULTIMATE.start_main_~f~0#1|)) |ULTIMATE.start_main_~f~0#1|))) is different from true [2021-11-19 05:11:03,293 WARN L860 $PredicateComparison]: unable to prove that (or (exists ((|ULTIMATE.start_main_~f~0#1| (_ FloatingPoint 8 24))) (and (not (fp.isNaN |ULTIMATE.start_main_~f~0#1|)) (not (fp.eq ((_ to_fp 8 24) c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode |ULTIMATE.start_main_~f~0#1|)) |ULTIMATE.start_main_~f~0#1|)))) (forall ((|v_ULTIMATE.start_main_~f~0#1_BEFORE_CALL_3| (_ FloatingPoint 8 24))) (or (and (or (not (= |c_assume_abort_if_not_#in~cond| (_ bv1 32))) (not (fp.isSubnormal |v_ULTIMATE.start_main_~f~0#1_BEFORE_CALL_3|))) (or (not (= |c_assume_abort_if_not_#in~cond| (_ bv0 32))) (not (fp.isNaN |v_ULTIMATE.start_main_~f~0#1_BEFORE_CALL_3|)))) (fp.eq ((_ to_fp 8 24) c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode |v_ULTIMATE.start_main_~f~0#1_BEFORE_CALL_3|)) |v_ULTIMATE.start_main_~f~0#1_BEFORE_CALL_3|)))) is different from true [2021-11-19 05:11:47,758 WARN L860 $PredicateComparison]: unable to prove that (or (exists ((|ULTIMATE.start_main_~f~0#1| (_ FloatingPoint 8 24))) (and (not (fp.isNaN |ULTIMATE.start_main_~f~0#1|)) (not (fp.eq ((_ to_fp 8 24) c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode |ULTIMATE.start_main_~f~0#1|)) |ULTIMATE.start_main_~f~0#1|)))) (forall ((|v_ULTIMATE.start_main_~f~0#1_BEFORE_CALL_3| (_ FloatingPoint 8 24))) (or (and (or (not (= |c_assume_abort_if_not_#in~cond| (_ bv1 32))) (not (fp.isSubnormal |v_ULTIMATE.start_main_~f~0#1_BEFORE_CALL_3|))) (or (not (= |c_assume_abort_if_not_#in~cond| (_ bv0 32))) (not (fp.isNaN |v_ULTIMATE.start_main_~f~0#1_BEFORE_CALL_3|)))) (fp.eq ((_ to_fp 8 24) c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode |v_ULTIMATE.start_main_~f~0#1_BEFORE_CALL_3|)) |v_ULTIMATE.start_main_~f~0#1_BEFORE_CALL_3|))) (= c_assume_abort_if_not_~cond (_ bv0 32))) is different from true [2021-11-19 05:13:20,451 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-19 05:13:20,452 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:13:20,452 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [440611236] [2021-11-19 05:13:20,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [440611236] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:13:20,452 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:13:20,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 6] imperfect sequences [] total 11 [2021-11-19 05:13:20,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110281234] [2021-11-19 05:13:20,452 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:13:20,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 05:13:20,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:13:20,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 05:13:20,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=29, Unknown=7, NotChecked=52, Total=110 [2021-11-19 05:13:20,454 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 9 states have internal predecessors, (50), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-19 05:13:22,102 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 05:13:24,137 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_main_~f~0#1| (_ FloatingPoint 8 24))) (or (fp.isNaN |ULTIMATE.start_main_~f~0#1|) (fp.eq ((_ to_fp 8 24) c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode |ULTIMATE.start_main_~f~0#1|)) |ULTIMATE.start_main_~f~0#1|))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-11-19 05:13:46,100 WARN L227 SmtUtils]: Spent 5.41s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-19 05:13:46,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:13:46,100 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2021-11-19 05:13:46,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 05:13:46,101 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 9 states have internal predecessors, (50), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) Word has length 34 [2021-11-19 05:13:46,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:13:46,104 INFO L225 Difference]: With dead ends: 31 [2021-11-19 05:13:46,104 INFO L226 Difference]: Without dead ends: 0 [2021-11-19 05:13:46,105 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 56 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 44.8s TimeCoverageRelationStatistics Valid=34, Invalid=49, Unknown=9, NotChecked=90, Total=182 [2021-11-19 05:13:46,106 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 2 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 34 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-11-19 05:13:46,106 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 6 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 34 Unchecked, 3.0s Time] [2021-11-19 05:13:46,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-19 05:13:46,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-19 05:13:46,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:13:46,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-19 05:13:46,108 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 34 [2021-11-19 05:13:46,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:13:46,108 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-19 05:13:46,108 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 9 states have internal predecessors, (50), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-19 05:13:46,108 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-19 05:13:46,108 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-19 05:13:46,110 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (12 of 13 remaining) [2021-11-19 05:13:46,111 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (11 of 13 remaining) [2021-11-19 05:13:46,111 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (10 of 13 remaining) [2021-11-19 05:13:46,111 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (9 of 13 remaining) [2021-11-19 05:13:46,112 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (8 of 13 remaining) [2021-11-19 05:13:46,112 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (7 of 13 remaining) [2021-11-19 05:13:46,112 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION (6 of 13 remaining) [2021-11-19 05:13:46,112 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION (5 of 13 remaining) [2021-11-19 05:13:46,112 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (4 of 13 remaining) [2021-11-19 05:13:46,113 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION (3 of 13 remaining) [2021-11-19 05:13:46,113 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION (2 of 13 remaining) [2021-11-19 05:13:46,113 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION (1 of 13 remaining) [2021-11-19 05:13:46,113 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION (0 of 13 remaining) [2021-11-19 05:13:46,131 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_926f91f5-c027-427f-a993-4379b247156a/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-11-19 05:13:46,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_926f91f5-c027-427f-a993-4379b247156a/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:13:46,332 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-19 05:14:33,253 WARN L227 SmtUtils]: Spent 46.92s on a formula simplification. DAG size of input: 32 DAG size of output: 25 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2021-11-19 05:14:56,356 WARN L227 SmtUtils]: Spent 23.09s on a formula simplification that was a NOOP. DAG size: 23 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2021-11-19 05:15:35,075 WARN L227 SmtUtils]: Spent 38.72s on a formula simplification. DAG size of input: 30 DAG size of output: 25 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2021-11-19 05:15:35,076 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION(line 397) no Hoare annotation was computed. [2021-11-19 05:15:35,077 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 387) no Hoare annotation was computed. [2021-11-19 05:15:35,077 INFO L858 garLoopResultBuilder]: For program point L399(line 399) no Hoare annotation was computed. [2021-11-19 05:15:35,077 INFO L858 garLoopResultBuilder]: For program point L399-2(line 399) no Hoare annotation was computed. [2021-11-19 05:15:35,077 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION(line 402) no Hoare annotation was computed. [2021-11-19 05:15:35,077 INFO L858 garLoopResultBuilder]: For program point L391(line 391) no Hoare annotation was computed. [2021-11-19 05:15:35,077 INFO L858 garLoopResultBuilder]: For program point L391-2(lines 379 404) no Hoare annotation was computed. [2021-11-19 05:15:35,077 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 392) no Hoare annotation was computed. [2021-11-19 05:15:35,077 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-19 05:15:35,077 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-19 05:15:35,078 INFO L858 garLoopResultBuilder]: For program point L392(line 392) no Hoare annotation was computed. [2021-11-19 05:15:35,078 INFO L858 garLoopResultBuilder]: For program point L392-2(lines 379 404) no Hoare annotation was computed. [2021-11-19 05:15:35,078 INFO L858 garLoopResultBuilder]: For program point L384(line 384) no Hoare annotation was computed. [2021-11-19 05:15:35,078 INFO L858 garLoopResultBuilder]: For program point L384-1(line 384) no Hoare annotation was computed. [2021-11-19 05:15:35,078 INFO L858 garLoopResultBuilder]: For program point L384-3(line 384) no Hoare annotation was computed. [2021-11-19 05:15:35,078 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION(line 399) no Hoare annotation was computed. [2021-11-19 05:15:35,079 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 391) no Hoare annotation was computed. [2021-11-19 05:15:35,080 INFO L854 garLoopResultBuilder]: At program point L401(line 401) the Hoare annotation is: (and (= ((_ to_fp 11 53) currentRoundingMode (/ 33554431.0 2854495385411919762116571938898990272765493248.0)) |ULTIMATE.start_main_~v~0#1|) (= |ULTIMATE.start_main_~smallestNormalFloat~0#1| ((_ to_fp 8 24) currentRoundingMode (/ 1.0 85070591730234615865843651857942052864.0))) (forall ((|ULTIMATE.start_main_~f~0#1| (_ FloatingPoint 8 24))) (or (fp.isNaN |ULTIMATE.start_main_~f~0#1|) (fp.eq ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode |ULTIMATE.start_main_~f~0#1|)) |ULTIMATE.start_main_~f~0#1|))) (= ((_ to_fp 8 24) currentRoundingMode (/ 8388607.0 713623846352979940529142984724747568191373312.0)) |ULTIMATE.start_main_~largestSubnormalFloat~0#1|) (= currentRoundingMode roundNearestTiesToEven)) [2021-11-19 05:15:35,080 INFO L858 garLoopResultBuilder]: For program point L401-1(lines 379 404) no Hoare annotation was computed. [2021-11-19 05:15:35,080 INFO L858 garLoopResultBuilder]: For program point L393(line 393) no Hoare annotation was computed. [2021-11-19 05:15:35,080 INFO L858 garLoopResultBuilder]: For program point L393-2(lines 379 404) no Hoare annotation was computed. [2021-11-19 05:15:35,080 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 394) no Hoare annotation was computed. [2021-11-19 05:15:35,080 INFO L858 garLoopResultBuilder]: For program point L402(line 402) no Hoare annotation was computed. [2021-11-19 05:15:35,080 INFO L858 garLoopResultBuilder]: For program point L402-2(line 402) no Hoare annotation was computed. [2021-11-19 05:15:35,080 INFO L858 garLoopResultBuilder]: For program point L394(line 394) no Hoare annotation was computed. [2021-11-19 05:15:35,080 INFO L858 garLoopResultBuilder]: For program point L394-2(lines 379 404) no Hoare annotation was computed. [2021-11-19 05:15:35,080 INFO L854 garLoopResultBuilder]: At program point L386(line 386) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= ((_ to_fp 8 24) currentRoundingMode (/ 8388607.0 713623846352979940529142984724747568191373312.0)) |ULTIMATE.start_main_~largestSubnormalFloat~0#1|)) (= ((_ to_fp 11 53) currentRoundingMode (/ 33554431.0 2854495385411919762116571938898990272765493248.0)) |ULTIMATE.start_main_~v~0#1|) (forall ((|ULTIMATE.start_main_~f~0#1| (_ FloatingPoint 8 24))) (or (fp.isNaN |ULTIMATE.start_main_~f~0#1|) (fp.eq ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode |ULTIMATE.start_main_~f~0#1|)) |ULTIMATE.start_main_~f~0#1|))) (exists ((currentRoundingMode RoundingMode)) (= |ULTIMATE.start_main_~smallestNormalFloat~0#1| ((_ to_fp 8 24) currentRoundingMode (/ 1.0 85070591730234615865843651857942052864.0)))) (= currentRoundingMode roundNearestTiesToEven)) [2021-11-19 05:15:35,080 INFO L858 garLoopResultBuilder]: For program point L386-1(lines 379 404) no Hoare annotation was computed. [2021-11-19 05:15:35,081 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 393) no Hoare annotation was computed. [2021-11-19 05:15:35,081 INFO L861 garLoopResultBuilder]: At program point L403(lines 378 404) the Hoare annotation is: true [2021-11-19 05:15:35,081 INFO L858 garLoopResultBuilder]: For program point L395(line 395) no Hoare annotation was computed. [2021-11-19 05:15:35,082 INFO L858 garLoopResultBuilder]: For program point L395-2(lines 379 404) no Hoare annotation was computed. [2021-11-19 05:15:35,083 INFO L858 garLoopResultBuilder]: For program point L387(line 387) no Hoare annotation was computed. [2021-11-19 05:15:35,083 INFO L858 garLoopResultBuilder]: For program point L387-2(lines 379 404) no Hoare annotation was computed. [2021-11-19 05:15:35,083 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-11-19 05:15:35,083 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION(line 396) no Hoare annotation was computed. [2021-11-19 05:15:35,084 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 384) no Hoare annotation was computed. [2021-11-19 05:15:35,084 INFO L858 garLoopResultBuilder]: For program point L396(line 396) no Hoare annotation was computed. [2021-11-19 05:15:35,084 INFO L858 garLoopResultBuilder]: For program point L396-2(lines 379 404) no Hoare annotation was computed. [2021-11-19 05:15:35,084 INFO L858 garLoopResultBuilder]: For program point L388(line 388) no Hoare annotation was computed. [2021-11-19 05:15:35,085 INFO L858 garLoopResultBuilder]: For program point L388-2(line 388) no Hoare annotation was computed. [2021-11-19 05:15:35,085 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-19 05:15:35,085 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION(line 395) no Hoare annotation was computed. [2021-11-19 05:15:35,085 INFO L858 garLoopResultBuilder]: For program point L397(line 397) no Hoare annotation was computed. [2021-11-19 05:15:35,085 INFO L858 garLoopResultBuilder]: For program point L397-2(lines 379 404) no Hoare annotation was computed. [2021-11-19 05:15:35,085 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION(line 398) no Hoare annotation was computed. [2021-11-19 05:15:35,086 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 388) no Hoare annotation was computed. [2021-11-19 05:15:35,086 INFO L858 garLoopResultBuilder]: For program point L398(line 398) no Hoare annotation was computed. [2021-11-19 05:15:35,086 INFO L858 garLoopResultBuilder]: For program point L398-2(lines 379 404) no Hoare annotation was computed. [2021-11-19 05:15:35,086 INFO L854 garLoopResultBuilder]: At program point L390(line 390) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (and (= |ULTIMATE.start_main_~smallestNormalFloat~0#1| ((_ to_fp 8 24) currentRoundingMode (/ 1.0 85070591730234615865843651857942052864.0))) (= ((_ to_fp 8 24) currentRoundingMode (/ 8388607.0 713623846352979940529142984724747568191373312.0)) |ULTIMATE.start_main_~largestSubnormalFloat~0#1|))) (= ((_ to_fp 11 53) currentRoundingMode (/ 33554431.0 2854495385411919762116571938898990272765493248.0)) |ULTIMATE.start_main_~v~0#1|) (forall ((|ULTIMATE.start_main_~f~0#1| (_ FloatingPoint 8 24))) (or (fp.isNaN |ULTIMATE.start_main_~f~0#1|) (fp.eq ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode |ULTIMATE.start_main_~f~0#1|)) |ULTIMATE.start_main_~f~0#1|))) (= currentRoundingMode roundNearestTiesToEven)) [2021-11-19 05:15:35,086 INFO L858 garLoopResultBuilder]: For program point L390-1(lines 379 404) no Hoare annotation was computed. [2021-11-19 05:15:35,087 INFO L858 garLoopResultBuilder]: For program point L3-2(lines 2 4) no Hoare annotation was computed. [2021-11-19 05:15:35,087 INFO L861 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 2 4) the Hoare annotation is: true [2021-11-19 05:15:35,087 INFO L858 garLoopResultBuilder]: For program point L3(line 3) no Hoare annotation was computed. [2021-11-19 05:15:35,087 INFO L858 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 2 4) no Hoare annotation was computed. [2021-11-19 05:15:35,090 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:15:35,092 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-19 05:15:35,102 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 05:15:35 BoogieIcfgContainer [2021-11-19 05:15:35,102 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-19 05:15:35,103 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-19 05:15:35,103 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-19 05:15:35,103 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-19 05:15:35,104 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:04:29" (3/4) ... [2021-11-19 05:15:35,107 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-19 05:15:35,114 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2021-11-19 05:15:35,119 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2021-11-19 05:15:35,119 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-11-19 05:15:35,119 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-19 05:15:35,120 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-19 05:15:35,159 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_926f91f5-c027-427f-a993-4379b247156a/bin/uautomizer-ZXIjhQolGL/witness.graphml [2021-11-19 05:15:35,160 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-19 05:15:35,160 INFO L158 Benchmark]: Toolchain (without parser) took 676897.71ms. Allocated memory was 77.6MB in the beginning and 109.1MB in the end (delta: 31.5MB). Free memory was 58.9MB in the beginning and 64.2MB in the end (delta: -5.3MB). Peak memory consumption was 25.3MB. Max. memory is 16.1GB. [2021-11-19 05:15:35,161 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 77.6MB. Free memory is still 57.3MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 05:15:35,161 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1168.88ms. Allocated memory is still 77.6MB. Free memory was 58.7MB in the beginning and 47.2MB in the end (delta: 11.5MB). Peak memory consumption was 29.0MB. Max. memory is 16.1GB. [2021-11-19 05:15:35,161 INFO L158 Benchmark]: Boogie Procedure Inliner took 76.45ms. Allocated memory is still 77.6MB. Free memory was 47.2MB in the beginning and 44.4MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-19 05:15:35,162 INFO L158 Benchmark]: Boogie Preprocessor took 44.70ms. Allocated memory is still 77.6MB. Free memory was 44.4MB in the beginning and 43.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-19 05:15:35,162 INFO L158 Benchmark]: RCFGBuilder took 9996.29ms. Allocated memory was 77.6MB in the beginning and 109.1MB in the end (delta: 31.5MB). Free memory was 43.0MB in the beginning and 90.0MB in the end (delta: -47.0MB). Peak memory consumption was 11.8MB. Max. memory is 16.1GB. [2021-11-19 05:15:35,163 INFO L158 Benchmark]: TraceAbstraction took 665544.79ms. Allocated memory is still 109.1MB. Free memory was 89.4MB in the beginning and 67.3MB in the end (delta: 22.0MB). Peak memory consumption was 22.2MB. Max. memory is 16.1GB. [2021-11-19 05:15:35,163 INFO L158 Benchmark]: Witness Printer took 56.65ms. Allocated memory is still 109.1MB. Free memory was 67.3MB in the beginning and 64.2MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-19 05:15:35,165 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 77.6MB. Free memory is still 57.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1168.88ms. Allocated memory is still 77.6MB. Free memory was 58.7MB in the beginning and 47.2MB in the end (delta: 11.5MB). Peak memory consumption was 29.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 76.45ms. Allocated memory is still 77.6MB. Free memory was 47.2MB in the beginning and 44.4MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 44.70ms. Allocated memory is still 77.6MB. Free memory was 44.4MB in the beginning and 43.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 9996.29ms. Allocated memory was 77.6MB in the beginning and 109.1MB in the end (delta: 31.5MB). Free memory was 43.0MB in the beginning and 90.0MB in the end (delta: -47.0MB). Peak memory consumption was 11.8MB. Max. memory is 16.1GB. * TraceAbstraction took 665544.79ms. Allocated memory is still 109.1MB. Free memory was 89.4MB in the beginning and 67.3MB in the end (delta: 22.0MB). Peak memory consumption was 22.2MB. Max. memory is 16.1GB. * Witness Printer took 56.65ms. Allocated memory is still 109.1MB. Free memory was 67.3MB in the beginning and 64.2MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 384]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 387]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 388]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 391]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 392]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 393]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 394]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 395]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 396]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 397]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 398]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 399]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 402]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 55 locations, 13 error locations. Started 1 CEGAR loops. OverallTime: 665.5s, OverallIterations: 11, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 82.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 108.7s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 4 mSolverCounterUnknown, 129 SdHoareTripleChecker+Valid, 57.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 123 mSDsluCounter, 589 SdHoareTripleChecker+Invalid, 55.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 111 IncrementalHoareTripleChecker+Unchecked, 305 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 223 IncrementalHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 284 mSDtfsCounter, 223 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 424 GetRequests, 373 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 62.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=55occurred in iteration=0, InterpolantAutomatonStates: 45, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 10 PreInvPairs, 14 NumberOfFragments, 96 HoareAnnotationTreeSize, 10 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 65 FormulaSimplificationTreeSizeReductionInter, 108.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 470.0s InterpolantComputationTime, 219 NumberOfCodeBlocks, 219 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 416 ConstructedInterpolants, 52 QuantifiedInterpolants, 2439 SizeOfPredicates, 45 NumberOfNonLiveVariables, 411 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 22 InterpolantComputations, 22 PerfectInterpolantSequences, 80/80 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 13 specifications checked. All of them hold - InvariantResult [Line: 378]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-11-19 05:15:35,387 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_926f91f5-c027-427f-a993-4379b247156a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE