./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_0881.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d3845b7-babf-410b-83b1-92bea0851d31/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d3845b7-babf-410b-83b1-92bea0851d31/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d3845b7-babf-410b-83b1-92bea0851d31/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d3845b7-babf-410b-83b1-92bea0851d31/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0881.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d3845b7-babf-410b-83b1-92bea0851d31/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d3845b7-babf-410b-83b1-92bea0851d31/bin/utaipan-aC7eJsxGYH --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 38a5409de7892736e2de01be9ec6b40de9935c7a9e78ae947f4a7fe77f1a0257 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:48:28,294 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:48:28,296 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:48:28,333 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:48:28,333 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:48:28,335 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:48:28,337 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:48:28,340 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:48:28,342 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:48:28,344 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:48:28,345 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:48:28,347 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:48:28,347 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:48:28,349 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:48:28,351 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:48:28,353 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:48:28,354 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:48:28,360 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:48:28,364 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:48:28,372 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:48:28,376 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:48:28,383 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:48:28,385 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:48:28,392 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:48:28,397 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:48:28,399 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:48:28,400 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:48:28,401 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:48:28,403 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:48:28,405 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:48:28,406 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:48:28,408 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:48:28,410 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:48:28,412 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:48:28,414 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:48:28,415 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:48:28,416 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:48:28,416 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:48:28,417 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:48:28,418 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:48:28,419 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:48:28,420 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d3845b7-babf-410b-83b1-92bea0851d31/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-03 04:48:28,478 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:48:28,481 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:48:28,482 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:48:28,483 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:48:28,483 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:48:28,483 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:48:28,484 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 04:48:28,484 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:48:28,490 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:48:28,491 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 04:48:28,492 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 04:48:28,492 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:48:28,493 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 04:48:28,493 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 04:48:28,493 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 04:48:28,494 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:48:28,494 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 04:48:28,495 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 04:48:28,495 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 04:48:28,495 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:48:28,495 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:48:28,496 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:48:28,496 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:48:28,496 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:48:28,496 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 04:48:28,497 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:48:28,497 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:48:28,497 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:48:28,498 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:48:28,500 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:48:28,500 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:48:28,501 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:48:28,501 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:48:28,501 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:48:28,502 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 04:48:28,502 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 04:48:28,502 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:48:28,502 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:48:28,503 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:48:28,503 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_7d3845b7-babf-410b-83b1-92bea0851d31/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d3845b7-babf-410b-83b1-92bea0851d31/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 38a5409de7892736e2de01be9ec6b40de9935c7a9e78ae947f4a7fe77f1a0257 [2021-11-03 04:48:28,787 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:48:28,812 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:48:28,815 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:48:28,816 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:48:28,817 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:48:28,818 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d3845b7-babf-410b-83b1-92bea0851d31/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/float-newlib/float_req_bl_0881.c [2021-11-03 04:48:28,893 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d3845b7-babf-410b-83b1-92bea0851d31/bin/utaipan-aC7eJsxGYH/data/053487c91/d1443f5fbb6349baabe87ed9c7594576/FLAG93e7eb0ee [2021-11-03 04:48:29,495 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:48:29,496 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d3845b7-babf-410b-83b1-92bea0851d31/sv-benchmarks/c/float-newlib/float_req_bl_0881.c [2021-11-03 04:48:29,509 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d3845b7-babf-410b-83b1-92bea0851d31/bin/utaipan-aC7eJsxGYH/data/053487c91/d1443f5fbb6349baabe87ed9c7594576/FLAG93e7eb0ee [2021-11-03 04:48:29,762 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d3845b7-babf-410b-83b1-92bea0851d31/bin/utaipan-aC7eJsxGYH/data/053487c91/d1443f5fbb6349baabe87ed9c7594576 [2021-11-03 04:48:29,764 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:48:29,766 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:48:29,768 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:48:29,768 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:48:29,772 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:48:29,773 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:48:29" (1/1) ... [2021-11-03 04:48:29,775 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47f4bf87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:48:29, skipping insertion in model container [2021-11-03 04:48:29,775 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:48:29" (1/1) ... [2021-11-03 04:48:29,784 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:48:29,828 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:48:30,145 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator has thrown an exception: java.lang.UnsupportedOperationException: createNanOrInfinity is unsupported in non-bitprecise translation at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.createNanOrInfinity(IntegerTranslation.java:835) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.standardfunctions.StandardFunctionHandler.handleNaNOrInfinity(StandardFunctionHandler.java:1691) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.standardfunctions.StandardFunctionHandler.lambda$42(StandardFunctionHandler.java:366) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.standardfunctions.StandardFunctionHandler.translateStandardFunction(StandardFunctionHandler.java:236) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1430) 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.FunctionHandler.handleReturnStatement(FunctionHandler.java:540) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2000) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:193) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1629) 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:1068) 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.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:1068) 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:1452) 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:3247) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2321) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:594) 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) [2021-11-03 04:48:30,152 INFO L168 Benchmark]: Toolchain (without parser) took 384.36 ms. Allocated memory is still 96.5 MB. Free memory was 55.0 MB in the beginning and 71.8 MB in the end (delta: -16.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-11-03 04:48:30,153 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 96.5 MB. Free memory is still 72.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:48:30,154 INFO L168 Benchmark]: CACSL2BoogieTranslator took 381.54 ms. Allocated memory is still 96.5 MB. Free memory was 54.9 MB in the beginning and 71.8 MB in the end (delta: -16.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-11-03 04:48:30,156 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 96.5 MB. Free memory is still 72.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 381.54 ms. Allocated memory is still 96.5 MB. Free memory was 54.9 MB in the beginning and 71.8 MB in the end (delta: -16.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: UnsupportedOperationException: createNanOrInfinity is unsupported in non-bitprecise translation de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: UnsupportedOperationException: createNanOrInfinity is unsupported in non-bitprecise translation: de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.createNanOrInfinity(IntegerTranslation.java:835) 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_7d3845b7-babf-410b-83b1-92bea0851d31/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d3845b7-babf-410b-83b1-92bea0851d31/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d3845b7-babf-410b-83b1-92bea0851d31/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d3845b7-babf-410b-83b1-92bea0851d31/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0881.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d3845b7-babf-410b-83b1-92bea0851d31/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d3845b7-babf-410b-83b1-92bea0851d31/bin/utaipan-aC7eJsxGYH --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 38a5409de7892736e2de01be9ec6b40de9935c7a9e78ae947f4a7fe77f1a0257 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:48:32,685 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:48:32,688 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:48:32,728 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:48:32,729 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:48:32,731 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:48:32,733 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:48:32,736 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:48:32,738 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:48:32,739 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:48:32,741 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:48:32,743 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:48:32,743 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:48:32,745 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:48:32,747 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:48:32,749 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:48:32,750 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:48:32,752 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:48:32,754 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:48:32,758 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:48:32,760 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:48:32,762 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:48:32,764 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:48:32,765 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:48:32,769 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:48:32,770 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:48:32,770 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:48:32,772 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:48:32,772 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:48:32,774 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:48:32,774 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:48:32,776 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:48:32,777 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:48:32,778 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:48:32,792 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:48:32,792 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:48:32,794 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:48:32,794 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:48:32,795 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:48:32,796 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:48:32,797 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:48:32,798 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d3845b7-babf-410b-83b1-92bea0851d31/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-03 04:48:32,829 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:48:32,829 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:48:32,830 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:48:32,831 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:48:32,831 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:48:32,831 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:48:32,831 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:48:32,832 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:48:32,832 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:48:32,833 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:48:32,833 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 04:48:32,833 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 04:48:32,834 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:48:32,834 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:48:32,834 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:48:32,834 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:48:32,834 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:48:32,835 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 04:48:32,835 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 04:48:32,835 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 04:48:32,835 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:48:32,836 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:48:32,836 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:48:32,836 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:48:32,836 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 04:48:32,837 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:48:32,837 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:48:32,837 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:48:32,837 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:48:32,838 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:48:32,838 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 04:48:32,838 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 04:48:32,838 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:48:32,839 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:48:32,839 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:48:32,839 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_7d3845b7-babf-410b-83b1-92bea0851d31/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d3845b7-babf-410b-83b1-92bea0851d31/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 38a5409de7892736e2de01be9ec6b40de9935c7a9e78ae947f4a7fe77f1a0257 [2021-11-03 04:48:33,206 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:48:33,232 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:48:33,235 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:48:33,236 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:48:33,237 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:48:33,238 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d3845b7-babf-410b-83b1-92bea0851d31/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/float-newlib/float_req_bl_0881.c [2021-11-03 04:48:33,315 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d3845b7-babf-410b-83b1-92bea0851d31/bin/utaipan-aC7eJsxGYH/data/35d7ad91d/d1964cb469c44f98a8b6bc698007ce99/FLAG0b3f76e74 [2021-11-03 04:48:34,066 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:48:34,071 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d3845b7-babf-410b-83b1-92bea0851d31/sv-benchmarks/c/float-newlib/float_req_bl_0881.c [2021-11-03 04:48:34,095 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d3845b7-babf-410b-83b1-92bea0851d31/bin/utaipan-aC7eJsxGYH/data/35d7ad91d/d1964cb469c44f98a8b6bc698007ce99/FLAG0b3f76e74 [2021-11-03 04:48:34,337 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d3845b7-babf-410b-83b1-92bea0851d31/bin/utaipan-aC7eJsxGYH/data/35d7ad91d/d1964cb469c44f98a8b6bc698007ce99 [2021-11-03 04:48:34,340 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:48:34,342 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:48:34,348 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:48:34,349 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:48:34,366 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:48:34,367 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:48:34" (1/1) ... [2021-11-03 04:48:34,368 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5eeeb0be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:48:34, skipping insertion in model container [2021-11-03 04:48:34,369 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:48:34" (1/1) ... [2021-11-03 04:48:34,377 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:48:34,446 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:48:34,796 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d3845b7-babf-410b-83b1-92bea0851d31/sv-benchmarks/c/float-newlib/float_req_bl_0881.c[15390,15403] [2021-11-03 04:48:34,799 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:48:34,834 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 04:48:34,990 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d3845b7-babf-410b-83b1-92bea0851d31/sv-benchmarks/c/float-newlib/float_req_bl_0881.c[15390,15403] [2021-11-03 04:48:34,991 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:48:35,017 INFO L208 MainTranslator]: Completed translation [2021-11-03 04:48:35,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:48:35 WrapperNode [2021-11-03 04:48:35,018 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:48:35,019 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 04:48:35,019 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 04:48:35,020 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 04:48:35,029 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:48:35" (1/1) ... [2021-11-03 04:48:35,070 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:48:35" (1/1) ... [2021-11-03 04:48:35,170 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 04:48:35,171 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 04:48:35,171 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 04:48:35,171 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 04:48:35,203 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:48:35" (1/1) ... [2021-11-03 04:48:35,203 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:48:35" (1/1) ... [2021-11-03 04:48:35,216 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:48:35" (1/1) ... [2021-11-03 04:48:35,227 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:48:35" (1/1) ... [2021-11-03 04:48:35,298 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:48:35" (1/1) ... [2021-11-03 04:48:35,348 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:48:35" (1/1) ... [2021-11-03 04:48:35,354 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:48:35" (1/1) ... [2021-11-03 04:48:35,365 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 04:48:35,372 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 04:48:35,372 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 04:48:35,373 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 04:48:35,373 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:48:35" (1/1) ... [2021-11-03 04:48:35,406 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:48:35,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d3845b7-babf-410b-83b1-92bea0851d31/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:48:35,433 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d3845b7-babf-410b-83b1-92bea0851d31/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 04:48:35,437 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d3845b7-babf-410b-83b1-92bea0851d31/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 04:48:35,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 04:48:35,490 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 04:48:35,490 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2021-11-03 04:48:35,491 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-03 04:48:35,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2021-11-03 04:48:35,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4 [2021-11-03 04:48:35,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 04:48:35,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 04:48:35,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-03 04:48:35,496 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 04:49:04,227 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 04:49:04,227 INFO L299 CfgBuilder]: Removed 126 assume(true) statements. [2021-11-03 04:49:04,231 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:49:04 BoogieIcfgContainer [2021-11-03 04:49:04,231 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 04:49:04,233 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 04:49:04,234 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 04:49:04,238 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 04:49:04,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:48:34" (1/3) ... [2021-11-03 04:49:04,242 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ca0f3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:49:04, skipping insertion in model container [2021-11-03 04:49:04,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:48:35" (2/3) ... [2021-11-03 04:49:04,242 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ca0f3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:49:04, skipping insertion in model container [2021-11-03 04:49:04,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:49:04" (3/3) ... [2021-11-03 04:49:04,244 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0881.c [2021-11-03 04:49:04,250 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 04:49:04,251 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-03 04:49:04,305 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 04:49:04,313 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=FINITE_AUTOMATA, 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 [2021-11-03 04:49:04,313 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-03 04:49:04,340 INFO L276 IsEmpty]: Start isEmpty. Operand has 257 states, 255 states have (on average 1.7490196078431373) internal successors, (446), 256 states have internal predecessors, (446), 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) [2021-11-03 04:49:04,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-03 04:49:04,349 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:49:04,349 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:49:04,350 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:49:04,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:49:04,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1965724613, now seen corresponding path program 1 times [2021-11-03 04:49:04,373 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:49:04,374 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [160226442] [2021-11-03 04:49:04,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:49:04,375 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:49:04,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d3845b7-babf-410b-83b1-92bea0851d31/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:49:04,382 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d3845b7-babf-410b-83b1-92bea0851d31/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:49:04,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d3845b7-babf-410b-83b1-92bea0851d31/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 04:49:05,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:49:05,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-03 04:49:05,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:49:05,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:49:05,739 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:49:05,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:49:05,881 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:49:05,882 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [160226442] [2021-11-03 04:49:05,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [160226442] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:49:05,883 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:49:05,883 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 04:49:05,885 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989289399] [2021-11-03 04:49:05,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 04:49:05,892 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:49:05,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 04:49:05,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 04:49:05,914 INFO L87 Difference]: Start difference. First operand has 257 states, 255 states have (on average 1.7490196078431373) internal successors, (446), 256 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:49:05,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:49:05,967 INFO L93 Difference]: Finished difference Result 511 states and 888 transitions. [2021-11-03 04:49:05,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 04:49:05,968 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-03 04:49:05,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:49:05,982 INFO L225 Difference]: With dead ends: 511 [2021-11-03 04:49:05,982 INFO L226 Difference]: Without dead ends: 253 [2021-11-03 04:49:05,986 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 04:49:06,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2021-11-03 04:49:06,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 253. [2021-11-03 04:49:06,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 252 states have (on average 1.3492063492063493) internal successors, (340), 252 states have internal predecessors, (340), 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) [2021-11-03 04:49:06,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 340 transitions. [2021-11-03 04:49:06,040 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 340 transitions. Word has length 16 [2021-11-03 04:49:06,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:49:06,041 INFO L470 AbstractCegarLoop]: Abstraction has 253 states and 340 transitions. [2021-11-03 04:49:06,041 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:49:06,042 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 340 transitions. [2021-11-03 04:49:06,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-03 04:49:06,043 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:49:06,043 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:49:06,073 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d3845b7-babf-410b-83b1-92bea0851d31/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-03 04:49:06,249 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d3845b7-babf-410b-83b1-92bea0851d31/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:49:06,250 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:49:06,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:49:06,251 INFO L85 PathProgramCache]: Analyzing trace with hash -1861888897, now seen corresponding path program 1 times [2021-11-03 04:49:06,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:49:06,254 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1570017875] [2021-11-03 04:49:06,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:49:06,254 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:49:06,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d3845b7-babf-410b-83b1-92bea0851d31/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:49:06,256 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d3845b7-babf-410b-83b1-92bea0851d31/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:49:06,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d3845b7-babf-410b-83b1-92bea0851d31/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 04:49:07,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:49:07,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:49:07,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:49:07,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:49:07,832 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:49:08,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:49:08,063 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:49:08,064 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1570017875] [2021-11-03 04:49:08,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1570017875] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:49:08,064 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:49:08,064 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-03 04:49:08,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412723282] [2021-11-03 04:49:08,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:49:08,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:49:08,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:49:08,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:49:08,069 INFO L87 Difference]: Start difference. First operand 253 states and 340 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:49:08,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:49:08,407 INFO L93 Difference]: Finished difference Result 487 states and 651 transitions. [2021-11-03 04:49:08,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:49:08,408 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-11-03 04:49:08,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:49:08,412 INFO L225 Difference]: With dead ends: 487 [2021-11-03 04:49:08,416 INFO L226 Difference]: Without dead ends: 253 [2021-11-03 04:49:08,419 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:49:08,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2021-11-03 04:49:08,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 253. [2021-11-03 04:49:08,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 252 states have (on average 1.3412698412698412) internal successors, (338), 252 states have internal predecessors, (338), 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) [2021-11-03 04:49:08,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 338 transitions. [2021-11-03 04:49:08,449 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 338 transitions. Word has length 19 [2021-11-03 04:49:08,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:49:08,450 INFO L470 AbstractCegarLoop]: Abstraction has 253 states and 338 transitions. [2021-11-03 04:49:08,450 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:49:08,451 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 338 transitions. [2021-11-03 04:49:08,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-03 04:49:08,461 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:49:08,461 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:49:08,503 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d3845b7-babf-410b-83b1-92bea0851d31/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-03 04:49:08,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d3845b7-babf-410b-83b1-92bea0851d31/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:49:08,676 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:49:08,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:49:08,677 INFO L85 PathProgramCache]: Analyzing trace with hash 1765794499, now seen corresponding path program 1 times [2021-11-03 04:49:08,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:49:08,678 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [682482529] [2021-11-03 04:49:08,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:49:08,678 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:49:08,678 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d3845b7-babf-410b-83b1-92bea0851d31/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:49:08,680 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d3845b7-babf-410b-83b1-92bea0851d31/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:49:08,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d3845b7-babf-410b-83b1-92bea0851d31/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 04:49:10,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:49:10,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-03 04:49:10,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:49:20,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:49:20,785 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:49:27,744 WARN L860 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_fmod_float_~y (_ FloatingPoint 8 24))) (not (fp.eq (let ((.cse0 (fp.mul c_currentRoundingMode c_ULTIMATE.start_fmod_float_~x ULTIMATE.start_fmod_float_~y))) (fp.div c_currentRoundingMode .cse0 .cse0)) (_ +zero 8 24)))) is different from true [2021-11-03 04:49:54,369 WARN L860 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_fmod_float_~y (_ FloatingPoint 8 24))) (not (fp.eq (let ((.cse0 (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~y~0 ULTIMATE.start_fmod_float_~y))) (fp.div c_currentRoundingMode .cse0 .cse0)) (_ +zero 8 24)))) is different from true [2021-11-03 04:50:13,135 WARN L860 $PredicateComparison]: unable to prove that (or (forall ((ULTIMATE.start_fmod_float_~y (_ FloatingPoint 8 24))) (not (fp.eq (let ((.cse0 (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~y~0 ULTIMATE.start_fmod_float_~y))) (fp.div c_currentRoundingMode .cse0 .cse0)) (_ +zero 8 24)))) (bvult c_ULTIMATE.start_floor_float_~ix~6 (_ bv2139095040 32))) is different from true [2021-11-03 04:50:22,588 WARN L860 $PredicateComparison]: unable to prove that (or (bvult (bvand (_ bv2147483647 32) c_ULTIMATE.start_floor_float_~i0~0) (_ bv2139095040 32)) (forall ((ULTIMATE.start_fmod_float_~y (_ FloatingPoint 8 24))) (not (fp.eq (let ((.cse0 (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~y~0 ULTIMATE.start_fmod_float_~y))) (fp.div c_currentRoundingMode .cse0 .cse0)) (_ +zero 8 24))))) is different from true [2021-11-03 04:50:33,343 WARN L860 $PredicateComparison]: unable to prove that (or (forall ((v_ULTIMATE.start_floor_float_~i0~0_17 (_ BitVec 32))) (or (bvult (bvand (_ bv2147483647 32) v_ULTIMATE.start_floor_float_~i0~0_17) (_ bv2139095040 32)) (not (= c_ULTIMATE.start_floor_float_~x (fp ((_ extract 31 31) v_ULTIMATE.start_floor_float_~i0~0_17) ((_ extract 30 23) v_ULTIMATE.start_floor_float_~i0~0_17) ((_ extract 22 0) v_ULTIMATE.start_floor_float_~i0~0_17)))))) (forall ((ULTIMATE.start_fmod_float_~y (_ FloatingPoint 8 24))) (not (fp.eq (let ((.cse0 (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~y~0 ULTIMATE.start_fmod_float_~y))) (fp.div c_currentRoundingMode .cse0 .cse0)) (_ +zero 8 24))))) is different from true [2021-11-03 04:50:39,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:50:39,285 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:50:39,285 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [682482529] [2021-11-03 04:50:39,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [682482529] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:50:39,286 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:50:39,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 9] imperfect sequences [] total 17 [2021-11-03 04:50:39,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863943157] [2021-11-03 04:50:39,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-03 04:50:39,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:50:39,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-03 04:50:39,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=109, Unknown=5, NotChecked=120, Total=272 [2021-11-03 04:50:39,289 INFO L87 Difference]: Start difference. First operand 253 states and 338 transitions. Second operand has 17 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 17 states have internal predecessors, (52), 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) [2021-11-03 04:50:42,365 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.gt c_ULTIMATE.start_main_~y~0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))))) (and (or (and |c_ULTIMATE.start_main_#t~short72| .cse0) (and (not .cse0) (not |c_ULTIMATE.start_main_#t~short72|))) (or (forall ((v_ULTIMATE.start_floor_float_~i0~0_17 (_ BitVec 32))) (or (bvult (bvand (_ bv2147483647 32) v_ULTIMATE.start_floor_float_~i0~0_17) (_ bv2139095040 32)) (not (= c_ULTIMATE.start_floor_float_~x (fp ((_ extract 31 31) v_ULTIMATE.start_floor_float_~i0~0_17) ((_ extract 30 23) v_ULTIMATE.start_floor_float_~i0~0_17) ((_ extract 22 0) v_ULTIMATE.start_floor_float_~i0~0_17)))))) (forall ((ULTIMATE.start_fmod_float_~y (_ FloatingPoint 8 24))) (not (fp.eq (let ((.cse1 (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~y~0 ULTIMATE.start_fmod_float_~y))) (fp.div c_currentRoundingMode .cse1 .cse1)) (_ +zero 8 24))))) (= c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_floor_float_~x) .cse0 (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-11-03 04:50:44,448 WARN L860 $PredicateComparison]: unable to prove that (and (or (bvult (bvand (_ bv2147483647 32) c_ULTIMATE.start_floor_float_~i0~0) (_ bv2139095040 32)) (forall ((ULTIMATE.start_fmod_float_~y (_ FloatingPoint 8 24))) (not (fp.eq (let ((.cse0 (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~y~0 ULTIMATE.start_fmod_float_~y))) (fp.div c_currentRoundingMode .cse0 .cse0)) (_ +zero 8 24))))) (= (fp ((_ extract 31 31) c_ULTIMATE.start_floor_float_~i0~0) ((_ extract 30 23) c_ULTIMATE.start_floor_float_~i0~0) ((_ extract 22 0) c_ULTIMATE.start_floor_float_~i0~0)) c_ULTIMATE.start_main_~y~0) (fp.gt c_ULTIMATE.start_main_~y~0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-11-03 04:50:46,538 WARN L860 $PredicateComparison]: unable to prove that (and (or (forall ((ULTIMATE.start_fmod_float_~y (_ FloatingPoint 8 24))) (not (fp.eq (let ((.cse0 (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~y~0 ULTIMATE.start_fmod_float_~y))) (fp.div c_currentRoundingMode .cse0 .cse0)) (_ +zero 8 24)))) (bvult c_ULTIMATE.start_floor_float_~ix~6 (_ bv2139095040 32))) (fp.gt c_ULTIMATE.start_main_~y~0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (= c_currentRoundingMode roundNearestTiesToEven) (exists ((ULTIMATE.start_floor_float_~i0~0 (_ BitVec 32))) (and (= (fp ((_ extract 31 31) ULTIMATE.start_floor_float_~i0~0) ((_ extract 30 23) ULTIMATE.start_floor_float_~i0~0) ((_ extract 22 0) ULTIMATE.start_floor_float_~i0~0)) c_ULTIMATE.start_main_~y~0) (= c_ULTIMATE.start_floor_float_~ix~6 (bvand (_ bv2147483647 32) ULTIMATE.start_floor_float_~i0~0))))) is different from true [2021-11-03 04:50:48,748 WARN L860 $PredicateComparison]: unable to prove that (and (forall ((ULTIMATE.start_fmod_float_~y (_ FloatingPoint 8 24))) (not (fp.eq (let ((.cse0 (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~y~0 ULTIMATE.start_fmod_float_~y))) (fp.div c_currentRoundingMode .cse0 .cse0)) (_ +zero 8 24)))) (exists ((ULTIMATE.start_floor_float_~i0~0 (_ BitVec 32))) (and (= (fp ((_ extract 31 31) ULTIMATE.start_floor_float_~i0~0) ((_ extract 30 23) ULTIMATE.start_floor_float_~i0~0) ((_ extract 22 0) ULTIMATE.start_floor_float_~i0~0)) c_ULTIMATE.start_main_~y~0) (not (bvult (bvand (_ bv2147483647 32) ULTIMATE.start_floor_float_~i0~0) (_ bv2139095040 32))))) (fp.gt c_ULTIMATE.start_main_~y~0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-11-03 04:50:51,569 WARN L860 $PredicateComparison]: unable to prove that (and (forall ((ULTIMATE.start_fmod_float_~y (_ FloatingPoint 8 24))) (not (fp.eq (let ((.cse0 (fp.mul c_currentRoundingMode c_ULTIMATE.start_fmod_float_~x ULTIMATE.start_fmod_float_~y))) (fp.div c_currentRoundingMode .cse0 .cse0)) (_ +zero 8 24)))) (exists ((ULTIMATE.start_floor_float_~i0~0 (_ BitVec 32))) (let ((.cse1 (fp ((_ extract 31 31) ULTIMATE.start_floor_float_~i0~0) ((_ extract 30 23) ULTIMATE.start_floor_float_~i0~0) ((_ extract 22 0) ULTIMATE.start_floor_float_~i0~0)))) (and (= c_ULTIMATE.start_fmod_float_~x .cse1) (not (bvult (bvand (_ bv2147483647 32) ULTIMATE.start_floor_float_~i0~0) (_ bv2139095040 32))) (fp.gt .cse1 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-11-03 04:51:42,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:51:42,482 INFO L93 Difference]: Finished difference Result 461 states and 607 transitions. [2021-11-03 04:51:42,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-03 04:51:42,493 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 17 states have internal predecessors, (52), 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 33 [2021-11-03 04:51:42,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:51:42,495 INFO L225 Difference]: With dead ends: 461 [2021-11-03 04:51:42,495 INFO L226 Difference]: Without dead ends: 263 [2021-11-03 04:51:42,496 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 10 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 30.0s TimeCoverageRelationStatistics Valid=53, Invalid=133, Unknown=10, NotChecked=310, Total=506 [2021-11-03 04:51:42,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2021-11-03 04:51:42,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 263. [2021-11-03 04:51:42,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 262 states have (on average 1.3282442748091603) internal successors, (348), 262 states have internal predecessors, (348), 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) [2021-11-03 04:51:42,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 348 transitions. [2021-11-03 04:51:42,519 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 348 transitions. Word has length 33 [2021-11-03 04:51:42,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:51:42,520 INFO L470 AbstractCegarLoop]: Abstraction has 263 states and 348 transitions. [2021-11-03 04:51:42,520 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 17 states have internal predecessors, (52), 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) [2021-11-03 04:51:42,521 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 348 transitions. [2021-11-03 04:51:42,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-03 04:51:42,522 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:51:42,523 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:51:42,563 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d3845b7-babf-410b-83b1-92bea0851d31/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-03 04:51:42,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d3845b7-babf-410b-83b1-92bea0851d31/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:51:42,736 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:51:42,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:51:42,737 INFO L85 PathProgramCache]: Analyzing trace with hash 1827834113, now seen corresponding path program 1 times [2021-11-03 04:51:42,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:51:42,737 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2128857761] [2021-11-03 04:51:42,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:51:42,738 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:51:42,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d3845b7-babf-410b-83b1-92bea0851d31/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:51:42,739 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d3845b7-babf-410b-83b1-92bea0851d31/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:51:42,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d3845b7-babf-410b-83b1-92bea0851d31/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-03 04:51:44,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:51:44,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-03 04:51:44,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:51:44,684 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2021-11-03 04:51:46,770 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-11-03 04:51:46,770 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 58 [2021-11-03 04:51:47,751 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-03 04:51:47,752 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 46 [2021-11-03 04:51:49,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:51:49,377 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:51:54,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:51:54,636 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:51:54,637 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2128857761] [2021-11-03 04:51:54,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2128857761] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:51:54,637 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:51:54,637 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 18 [2021-11-03 04:51:54,637 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810331788] [2021-11-03 04:51:54,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-03 04:51:54,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:51:54,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-03 04:51:54,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2021-11-03 04:51:54,639 INFO L87 Difference]: Start difference. First operand 263 states and 348 transitions. Second operand has 18 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 18 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:55:28,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:55:28,739 INFO L93 Difference]: Finished difference Result 1579 states and 2212 transitions. [2021-11-03 04:55:28,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-03 04:55:28,748 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 18 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-03 04:55:28,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:55:28,756 INFO L225 Difference]: With dead ends: 1579 [2021-11-03 04:55:28,756 INFO L226 Difference]: Without dead ends: 1340 [2021-11-03 04:55:28,758 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 46 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 12.9s TimeCoverageRelationStatistics Valid=279, Invalid=1127, Unknown=0, NotChecked=0, Total=1406 [2021-11-03 04:55:28,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1340 states. [2021-11-03 04:55:28,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1340 to 278. [2021-11-03 04:55:28,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 277 states have (on average 1.3140794223826715) internal successors, (364), 277 states have internal predecessors, (364), 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) [2021-11-03 04:55:28,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 364 transitions. [2021-11-03 04:55:28,783 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 364 transitions. Word has length 33 [2021-11-03 04:55:28,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:55:28,784 INFO L470 AbstractCegarLoop]: Abstraction has 278 states and 364 transitions. [2021-11-03 04:55:28,784 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 18 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:55:28,784 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 364 transitions. [2021-11-03 04:55:28,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-03 04:55:28,786 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:55:28,786 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:55:28,820 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d3845b7-babf-410b-83b1-92bea0851d31/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-03 04:55:29,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d3845b7-babf-410b-83b1-92bea0851d31/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:55:29,008 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:55:29,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:55:29,008 INFO L85 PathProgramCache]: Analyzing trace with hash 2135008422, now seen corresponding path program 1 times [2021-11-03 04:55:29,009 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:55:29,009 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1629653506] [2021-11-03 04:55:29,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:55:29,009 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:55:29,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d3845b7-babf-410b-83b1-92bea0851d31/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:55:29,010 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d3845b7-babf-410b-83b1-92bea0851d31/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:55:29,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d3845b7-babf-410b-83b1-92bea0851d31/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 04:55:30,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:55:30,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-03 04:55:30,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:55:30,686 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2021-11-03 04:55:32,516 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-11-03 04:55:32,517 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 72 [2021-11-03 04:55:33,338 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-03 04:55:33,338 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 108 treesize of output 60 [2021-11-03 04:55:34,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:55:34,792 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:55:39,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:55:39,641 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:55:39,642 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1629653506] [2021-11-03 04:55:39,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1629653506] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:55:39,642 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:55:39,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 11] imperfect sequences [] total 20 [2021-11-03 04:55:39,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901333345] [2021-11-03 04:55:39,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-03 04:55:39,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:55:39,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-03 04:55:39,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2021-11-03 04:55:39,645 INFO L87 Difference]: Start difference. First operand 278 states and 364 transitions. Second operand has 20 states, 20 states have (on average 2.6) internal successors, (52), 20 states have internal predecessors, (52), 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) [2021-11-03 04:58:43,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:58:43,510 INFO L93 Difference]: Finished difference Result 1712 states and 2436 transitions. [2021-11-03 04:58:43,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-03 04:58:43,519 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.6) internal successors, (52), 20 states have internal predecessors, (52), 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 34 [2021-11-03 04:58:43,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:58:43,527 INFO L225 Difference]: With dead ends: 1712 [2021-11-03 04:58:43,528 INFO L226 Difference]: Without dead ends: 1491 [2021-11-03 04:58:43,529 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 46 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 14.9s TimeCoverageRelationStatistics Valid=453, Invalid=1803, Unknown=0, NotChecked=0, Total=2256 [2021-11-03 04:58:43,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1491 states. [2021-11-03 04:58:43,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1491 to 284. [2021-11-03 04:58:43,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 283 states have (on average 1.3109540636042403) internal successors, (371), 283 states have internal predecessors, (371), 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) [2021-11-03 04:58:43,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 371 transitions. [2021-11-03 04:58:43,558 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 371 transitions. Word has length 34 [2021-11-03 04:58:43,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:58:43,558 INFO L470 AbstractCegarLoop]: Abstraction has 284 states and 371 transitions. [2021-11-03 04:58:43,559 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.6) internal successors, (52), 20 states have internal predecessors, (52), 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) [2021-11-03 04:58:43,559 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 371 transitions. [2021-11-03 04:58:43,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-03 04:58:43,560 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:58:43,561 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:58:43,603 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d3845b7-babf-410b-83b1-92bea0851d31/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-03 04:58:43,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d3845b7-babf-410b-83b1-92bea0851d31/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:58:43,776 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:58:43,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:58:43,776 INFO L85 PathProgramCache]: Analyzing trace with hash -305186201, now seen corresponding path program 1 times [2021-11-03 04:58:43,777 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:58:43,777 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [946869681] [2021-11-03 04:58:43,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:58:43,777 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:58:43,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d3845b7-babf-410b-83b1-92bea0851d31/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:58:43,790 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d3845b7-babf-410b-83b1-92bea0851d31/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:58:43,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d3845b7-babf-410b-83b1-92bea0851d31/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-03 04:58:44,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:58:44,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-03 04:58:44,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:58:45,398 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2021-11-03 04:58:46,592 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 33 [2021-11-03 04:58:47,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:58:47,726 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:58:50,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:58:50,691 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:58:50,691 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [946869681] [2021-11-03 04:58:50,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [946869681] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:58:50,691 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:58:50,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 16 [2021-11-03 04:58:50,692 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160153761] [2021-11-03 04:58:50,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-03 04:58:50,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:58:50,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-03 04:58:50,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2021-11-03 04:58:50,693 INFO L87 Difference]: Start difference. First operand 284 states and 371 transitions. Second operand has 16 states, 16 states have (on average 3.1875) internal successors, (51), 16 states have internal predecessors, (51), 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) [2021-11-03 04:59:37,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:59:37,798 INFO L93 Difference]: Finished difference Result 937 states and 1210 transitions. [2021-11-03 04:59:37,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-03 04:59:37,801 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.1875) internal successors, (51), 16 states have internal predecessors, (51), 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 34 [2021-11-03 04:59:37,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:59:37,804 INFO L225 Difference]: With dead ends: 937 [2021-11-03 04:59:37,805 INFO L226 Difference]: Without dead ends: 703 [2021-11-03 04:59:37,806 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 50 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=230, Invalid=700, Unknown=0, NotChecked=0, Total=930 [2021-11-03 04:59:37,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 703 states. [2021-11-03 04:59:37,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 703 to 284. [2021-11-03 04:59:37,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 283 states have (on average 1.3074204946996466) internal successors, (370), 283 states have internal predecessors, (370), 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) [2021-11-03 04:59:37,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 370 transitions. [2021-11-03 04:59:37,833 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 370 transitions. Word has length 34 [2021-11-03 04:59:37,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:59:37,833 INFO L470 AbstractCegarLoop]: Abstraction has 284 states and 370 transitions. [2021-11-03 04:59:37,834 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.1875) internal successors, (51), 16 states have internal predecessors, (51), 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) [2021-11-03 04:59:37,834 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 370 transitions. [2021-11-03 04:59:37,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-03 04:59:37,835 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:59:37,835 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:59:37,871 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d3845b7-babf-410b-83b1-92bea0851d31/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-03 04:59:38,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d3845b7-babf-410b-83b1-92bea0851d31/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:59:38,055 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:59:38,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:59:38,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1618041833, now seen corresponding path program 1 times [2021-11-03 04:59:38,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:59:38,056 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1070241836] [2021-11-03 04:59:38,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:59:38,057 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:59:38,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d3845b7-babf-410b-83b1-92bea0851d31/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:59:38,058 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d3845b7-babf-410b-83b1-92bea0851d31/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:59:38,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d3845b7-babf-410b-83b1-92bea0851d31/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-03 04:59:39,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:59:39,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-03 04:59:39,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:59:39,531 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2021-11-03 04:59:40,874 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-11-03 04:59:40,874 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 88 treesize of output 63 [2021-11-03 04:59:41,545 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-03 04:59:41,546 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 95 treesize of output 51 [2021-11-03 04:59:42,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:59:42,944 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:59:47,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:59:47,490 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:59:47,490 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1070241836] [2021-11-03 04:59:47,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1070241836] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:59:47,490 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:59:47,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 18 [2021-11-03 04:59:47,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89409843] [2021-11-03 04:59:47,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-03 04:59:47,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:59:47,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-03 04:59:47,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2021-11-03 04:59:47,493 INFO L87 Difference]: Start difference. First operand 284 states and 370 transitions. Second operand has 18 states, 18 states have (on average 2.888888888888889) internal successors, (52), 18 states have internal predecessors, (52), 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) [2021-11-03 05:02:39,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:02:39,948 INFO L93 Difference]: Finished difference Result 1009 states and 1394 transitions. [2021-11-03 05:02:39,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-03 05:02:39,957 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.888888888888889) internal successors, (52), 18 states have internal predecessors, (52), 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 34 [2021-11-03 05:02:39,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:02:39,962 INFO L225 Difference]: With dead ends: 1009 [2021-11-03 05:02:39,962 INFO L226 Difference]: Without dead ends: 790 [2021-11-03 05:02:39,963 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 48 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 14.7s TimeCoverageRelationStatistics Valid=266, Invalid=1066, Unknown=0, NotChecked=0, Total=1332 [2021-11-03 05:02:39,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 790 states. [2021-11-03 05:02:39,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 790 to 281. [2021-11-03 05:02:39,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 280 states have (on average 1.2964285714285715) internal successors, (363), 280 states have internal predecessors, (363), 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) [2021-11-03 05:02:39,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 363 transitions. [2021-11-03 05:02:39,994 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 363 transitions. Word has length 34 [2021-11-03 05:02:39,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:02:39,995 INFO L470 AbstractCegarLoop]: Abstraction has 281 states and 363 transitions. [2021-11-03 05:02:39,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.888888888888889) internal successors, (52), 18 states have internal predecessors, (52), 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) [2021-11-03 05:02:39,995 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 363 transitions. [2021-11-03 05:02:39,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-03 05:02:39,996 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:02:39,996 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:02:40,027 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d3845b7-babf-410b-83b1-92bea0851d31/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-03 05:02:40,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d3845b7-babf-410b-83b1-92bea0851d31/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:02:40,208 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:02:40,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:02:40,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1744456476, now seen corresponding path program 1 times [2021-11-03 05:02:40,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:02:40,209 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1754966145] [2021-11-03 05:02:40,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:02:40,209 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:02:40,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d3845b7-babf-410b-83b1-92bea0851d31/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:02:40,209 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d3845b7-babf-410b-83b1-92bea0851d31/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:02:40,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d3845b7-babf-410b-83b1-92bea0851d31/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-03 05:02:41,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:02:41,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 30 conjunts are in the unsatisfiable core [2021-11-03 05:02:41,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:02:41,728 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2021-11-03 05:02:43,140 INFO L354 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-11-03 05:02:43,140 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 54 [2021-11-03 05:02:43,757 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2021-11-03 05:02:46,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:02:46,314 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:02:50,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:02:50,619 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:02:50,619 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1754966145] [2021-11-03 05:02:50,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1754966145] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:02:50,620 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:02:50,620 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 12] imperfect sequences [] total 21 [2021-11-03 05:02:50,620 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084344509] [2021-11-03 05:02:50,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-03 05:02:50,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:02:50,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-03 05:02:50,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2021-11-03 05:02:50,623 INFO L87 Difference]: Start difference. First operand 281 states and 363 transitions. Second operand has 21 states, 21 states have (on average 2.619047619047619) internal successors, (55), 21 states have internal predecessors, (55), 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)