./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--input--mousedev.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--input--mousedev.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash d256a8b259faad28b260c065eb5db63197c2a9358a88ea40fe4f65cbd4165ef2 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 09:27:41,483 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 09:27:41,485 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 09:27:41,510 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 09:27:41,510 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 09:27:41,516 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 09:27:41,521 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 09:27:41,526 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 09:27:41,528 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 09:27:41,533 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 09:27:41,535 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 09:27:41,537 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 09:27:41,537 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 09:27:41,540 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 09:27:41,542 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 09:27:41,544 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 09:27:41,545 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 09:27:41,546 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 09:27:41,548 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 09:27:41,554 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 09:27:41,556 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 09:27:41,558 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 09:27:41,559 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 09:27:41,560 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 09:27:41,570 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 09:27:41,570 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 09:27:41,571 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 09:27:41,573 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 09:27:41,573 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 09:27:41,574 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 09:27:41,575 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 09:27:41,575 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 09:27:41,577 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 09:27:41,579 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 09:27:41,580 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 09:27:41,580 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 09:27:41,581 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 09:27:41,581 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 09:27:41,581 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 09:27:41,583 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 09:27:41,583 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 09:27:41,584 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-20 09:27:41,621 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 09:27:41,621 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 09:27:41,622 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 09:27:41,622 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 09:27:41,622 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 09:27:41,628 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 09:27:41,628 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 09:27:41,629 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 09:27:41,629 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 09:27:41,629 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 09:27:41,630 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 09:27:41,631 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 09:27:41,631 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 09:27:41,631 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 09:27:41,632 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 09:27:41,632 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 09:27:41,632 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 09:27:41,632 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 09:27:41,633 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 09:27:41,633 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 09:27:41,633 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 09:27:41,633 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 09:27:41,634 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 09:27:41,634 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 09:27:41,635 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 09:27:41,635 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 09:27:41,635 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 09:27:41,635 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 09:27:41,636 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 09:27:41,636 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 09:27:41,637 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d256a8b259faad28b260c065eb5db63197c2a9358a88ea40fe4f65cbd4165ef2 [2022-11-20 09:27:41,921 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 09:27:41,956 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 09:27:41,959 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 09:27:41,961 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 09:27:41,961 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 09:27:41,963 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--input--mousedev.ko-entry_point.cil.out.i [2022-11-20 09:27:44,941 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 09:27:45,467 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 09:27:45,468 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--input--mousedev.ko-entry_point.cil.out.i [2022-11-20 09:27:45,507 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/data/a02718dc1/2c65071b51474e95a6735b4506e77d00/FLAGac4945ede [2022-11-20 09:27:45,527 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/data/a02718dc1/2c65071b51474e95a6735b4506e77d00 [2022-11-20 09:27:45,529 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 09:27:45,531 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 09:27:45,536 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 09:27:45,536 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 09:27:45,540 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 09:27:45,541 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:27:45" (1/1) ... [2022-11-20 09:27:45,542 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c1ee577 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:45, skipping insertion in model container [2022-11-20 09:27:45,542 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:27:45" (1/1) ... [2022-11-20 09:27:45,550 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 09:27:45,657 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 09:27:46,091 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.TypeSizes.extractIntegerValue(TypeSizes.java:384) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.BitabsTranslation.abstractShiftRight(BitabsTranslation.java:159) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.constructBinaryBitwiseIntegerExpression(IntegerTranslation.java:190) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.ExpressionTranslation.constructBinaryBitwiseExpression(ExpressionTranslation.java:131) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CExpressionTranslator.handleBitshiftOperation(CExpressionTranslator.java:418) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:834) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:282) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2446) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:303) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:960) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:279) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:727) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:282) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2446) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:303) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleReturnStatement(FunctionHandler.java:540) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2061) 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:1087) 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:1087) 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:371) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1489) 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:3314) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2388) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:600) 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) [2022-11-20 09:27:46,099 INFO L158 Benchmark]: Toolchain (without parser) took 567.85ms. Allocated memory was 155.2MB in the beginning and 201.3MB in the end (delta: 46.1MB). Free memory was 102.2MB in the beginning and 159.7MB in the end (delta: -57.5MB). Peak memory consumption was 48.4MB. Max. memory is 16.1GB. [2022-11-20 09:27:46,100 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 155.2MB. Free memory is still 99.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 09:27:46,102 INFO L158 Benchmark]: CACSL2BoogieTranslator took 561.90ms. Allocated memory was 155.2MB in the beginning and 201.3MB in the end (delta: 46.1MB). Free memory was 102.2MB in the beginning and 159.7MB in the end (delta: -57.5MB). Peak memory consumption was 48.4MB. Max. memory is 16.1GB. [2022-11-20 09:27:46,104 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 155.2MB. Free memory is still 99.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 561.90ms. Allocated memory was 155.2MB in the beginning and 201.3MB in the end (delta: 46.1MB). Free memory was 102.2MB in the beginning and 159.7MB in the end (delta: -57.5MB). Peak memory consumption was 48.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: NullPointerException: null: de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.TypeSizes.extractIntegerValue(TypeSizes.java:384) 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/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--input--mousedev.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash d256a8b259faad28b260c065eb5db63197c2a9358a88ea40fe4f65cbd4165ef2 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 09:27:48,335 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 09:27:48,337 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 09:27:48,383 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 09:27:48,388 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 09:27:48,389 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 09:27:48,392 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 09:27:48,397 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 09:27:48,401 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 09:27:48,403 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 09:27:48,404 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 09:27:48,406 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 09:27:48,408 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 09:27:48,411 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 09:27:48,412 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 09:27:48,415 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 09:27:48,417 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 09:27:48,422 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 09:27:48,424 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 09:27:48,427 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 09:27:48,432 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 09:27:48,436 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 09:27:48,438 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 09:27:48,440 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 09:27:48,444 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 09:27:48,449 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 09:27:48,449 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 09:27:48,450 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 09:27:48,452 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 09:27:48,453 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 09:27:48,453 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 09:27:48,454 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 09:27:48,455 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 09:27:48,457 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 09:27:48,460 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 09:27:48,461 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 09:27:48,462 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 09:27:48,462 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 09:27:48,462 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 09:27:48,463 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 09:27:48,464 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 09:27:48,467 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-11-20 09:27:48,501 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 09:27:48,502 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 09:27:48,503 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 09:27:48,504 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 09:27:48,504 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 09:27:48,505 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 09:27:48,505 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 09:27:48,506 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 09:27:48,506 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 09:27:48,506 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 09:27:48,507 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 09:27:48,507 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 09:27:48,508 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 09:27:48,508 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 09:27:48,508 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 09:27:48,508 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-20 09:27:48,509 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-20 09:27:48,509 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 09:27:48,509 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 09:27:48,509 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 09:27:48,509 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 09:27:48,510 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 09:27:48,510 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 09:27:48,510 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 09:27:48,510 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 09:27:48,511 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 09:27:48,511 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 09:27:48,511 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-20 09:27:48,511 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-20 09:27:48,511 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 09:27:48,512 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 09:27:48,512 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 09:27:48,512 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-20 09:27:48,512 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_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d256a8b259faad28b260c065eb5db63197c2a9358a88ea40fe4f65cbd4165ef2 [2022-11-20 09:27:48,880 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 09:27:48,907 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 09:27:48,910 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 09:27:48,912 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 09:27:48,912 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 09:27:48,914 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--input--mousedev.ko-entry_point.cil.out.i [2022-11-20 09:27:51,954 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 09:27:52,476 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 09:27:52,477 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--input--mousedev.ko-entry_point.cil.out.i [2022-11-20 09:27:52,506 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/data/ce4abf287/e48ea004521f47f0bd60a73e3a70c02a/FLAG17d594872 [2022-11-20 09:27:52,521 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/data/ce4abf287/e48ea004521f47f0bd60a73e3a70c02a [2022-11-20 09:27:52,524 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 09:27:52,525 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 09:27:52,527 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 09:27:52,527 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 09:27:52,530 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 09:27:52,531 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:27:52" (1/1) ... [2022-11-20 09:27:52,532 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fdadc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:52, skipping insertion in model container [2022-11-20 09:27:52,532 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:27:52" (1/1) ... [2022-11-20 09:27:52,539 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 09:27:52,651 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 09:27:54,235 WARN L237 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_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--input--mousedev.ko-entry_point.cil.out.i[159905,159918] [2022-11-20 09:27:54,436 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 09:27:54,491 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-20 09:27:54,532 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 09:27:54,772 WARN L237 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_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--input--mousedev.ko-entry_point.cil.out.i[159905,159918] [2022-11-20 09:27:54,785 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 09:27:54,800 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 09:27:55,019 WARN L237 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_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--input--mousedev.ko-entry_point.cil.out.i[159905,159918] [2022-11-20 09:27:55,041 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 09:27:55,269 INFO L208 MainTranslator]: Completed translation [2022-11-20 09:27:55,270 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:55 WrapperNode [2022-11-20 09:27:55,270 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 09:27:55,271 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 09:27:55,271 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 09:27:55,271 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 09:27:55,278 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:55" (1/1) ... [2022-11-20 09:27:55,366 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:55" (1/1) ... [2022-11-20 09:27:55,574 INFO L138 Inliner]: procedures = 274, calls = 1110, calls flagged for inlining = 115, calls inlined = 111, statements flattened = 2704 [2022-11-20 09:27:55,575 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 09:27:55,577 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 09:27:55,577 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 09:27:55,577 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 09:27:55,584 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:55" (1/1) ... [2022-11-20 09:27:55,584 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:55" (1/1) ... [2022-11-20 09:27:55,603 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:55" (1/1) ... [2022-11-20 09:27:55,604 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:55" (1/1) ... [2022-11-20 09:27:55,726 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:55" (1/1) ... [2022-11-20 09:27:55,752 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:55" (1/1) ... [2022-11-20 09:27:55,773 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:55" (1/1) ... [2022-11-20 09:27:55,789 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:55" (1/1) ... [2022-11-20 09:27:55,822 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 09:27:55,823 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 09:27:55,824 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 09:27:55,824 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 09:27:55,825 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:55" (1/1) ... [2022-11-20 09:27:55,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 09:27:55,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:27:55,875 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 09:27:55,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 09:27:55,917 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-11-20 09:27:55,917 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-11-20 09:27:55,917 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-20 09:27:55,917 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-20 09:27:55,918 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2022-11-20 09:27:55,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-20 09:27:55,918 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-20 09:27:55,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-20 09:27:55,918 INFO L130 BoogieDeclarations]: Found specification of procedure mousedev_create [2022-11-20 09:27:55,918 INFO L138 BoogieDeclarations]: Found implementation of procedure mousedev_create [2022-11-20 09:27:55,919 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-20 09:27:55,919 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-20 09:27:55,919 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2022-11-20 09:27:55,919 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2022-11-20 09:27:55,919 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-20 09:27:55,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-20 09:27:55,920 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-20 09:27:55,920 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-20 09:27:55,920 INFO L130 BoogieDeclarations]: Found specification of procedure mousedev_event [2022-11-20 09:27:55,920 INFO L138 BoogieDeclarations]: Found implementation of procedure mousedev_event [2022-11-20 09:27:55,920 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-20 09:27:55,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-20 09:27:55,921 INFO L130 BoogieDeclarations]: Found specification of procedure mousedev_packet [2022-11-20 09:27:55,921 INFO L138 BoogieDeclarations]: Found implementation of procedure mousedev_packet [2022-11-20 09:27:55,921 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-20 09:27:55,921 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-20 09:27:55,921 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-20 09:27:55,921 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-20 09:27:55,922 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-20 09:27:55,922 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-20 09:27:55,922 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-11-20 09:27:55,922 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-11-20 09:27:55,922 INFO L130 BoogieDeclarations]: Found specification of procedure mousedev_notify_readers [2022-11-20 09:27:55,922 INFO L138 BoogieDeclarations]: Found implementation of procedure mousedev_notify_readers [2022-11-20 09:27:55,923 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-20 09:27:55,923 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-20 09:27:55,923 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 09:27:55,923 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-20 09:27:55,923 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-20 09:27:55,924 INFO L130 BoogieDeclarations]: Found specification of procedure mousedev_close_device [2022-11-20 09:27:55,924 INFO L138 BoogieDeclarations]: Found implementation of procedure mousedev_close_device [2022-11-20 09:27:55,924 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 09:27:55,924 INFO L130 BoogieDeclarations]: Found specification of procedure mousedev_fasync [2022-11-20 09:27:55,924 INFO L138 BoogieDeclarations]: Found implementation of procedure mousedev_fasync [2022-11-20 09:27:55,925 INFO L130 BoogieDeclarations]: Found specification of procedure __list_del_entry [2022-11-20 09:27:55,925 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_del_entry [2022-11-20 09:27:55,925 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mutex_of_mousedev [2022-11-20 09:27:55,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mutex_of_mousedev [2022-11-20 09:27:55,925 INFO L130 BoogieDeclarations]: Found specification of procedure mousedev_poll [2022-11-20 09:27:55,925 INFO L138 BoogieDeclarations]: Found implementation of procedure mousedev_poll [2022-11-20 09:27:55,926 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-20 09:27:55,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-20 09:27:55,926 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible [2022-11-20 09:27:55,926 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible [2022-11-20 09:27:55,926 INFO L130 BoogieDeclarations]: Found specification of procedure input_abs_get_min [2022-11-20 09:27:55,926 INFO L138 BoogieDeclarations]: Found implementation of procedure input_abs_get_min [2022-11-20 09:27:55,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-11-20 09:27:55,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-11-20 09:27:55,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2022-11-20 09:27:55,927 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 09:27:55,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-20 09:27:55,927 INFO L130 BoogieDeclarations]: Found specification of procedure mousedev_destroy [2022-11-20 09:27:55,928 INFO L138 BoogieDeclarations]: Found implementation of procedure mousedev_destroy [2022-11-20 09:27:55,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-20 09:27:55,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2022-11-20 09:27:55,928 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_file_operations_2 [2022-11-20 09:27:55,928 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_file_operations_2 [2022-11-20 09:27:55,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-20 09:27:55,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-11-20 09:27:55,929 INFO L130 BoogieDeclarations]: Found specification of procedure put_device [2022-11-20 09:27:55,929 INFO L138 BoogieDeclarations]: Found implementation of procedure put_device [2022-11-20 09:27:55,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2022-11-20 09:27:55,929 INFO L130 BoogieDeclarations]: Found specification of procedure __might_fault [2022-11-20 09:27:55,929 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_fault [2022-11-20 09:27:55,930 INFO L130 BoogieDeclarations]: Found specification of procedure mousedev_limit_delta [2022-11-20 09:27:55,930 INFO L138 BoogieDeclarations]: Found implementation of procedure mousedev_limit_delta [2022-11-20 09:27:55,930 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-20 09:27:55,930 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-20 09:27:55,930 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-20 09:27:55,930 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-20 09:27:55,931 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-20 09:27:55,931 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-20 09:27:55,931 INFO L130 BoogieDeclarations]: Found specification of procedure mousedev_key_event [2022-11-20 09:27:55,931 INFO L138 BoogieDeclarations]: Found implementation of procedure mousedev_key_event [2022-11-20 09:27:55,931 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-20 09:27:55,931 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-20 09:27:55,932 INFO L130 BoogieDeclarations]: Found specification of procedure get_device [2022-11-20 09:27:55,932 INFO L138 BoogieDeclarations]: Found implementation of procedure get_device [2022-11-20 09:27:55,932 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-20 09:27:55,932 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-20 09:27:55,932 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_is_watching [2022-11-20 09:27:55,932 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_is_watching [2022-11-20 09:27:55,933 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-20 09:27:55,933 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-20 09:27:55,933 INFO L130 BoogieDeclarations]: Found specification of procedure kill_fasync [2022-11-20 09:27:55,933 INFO L138 BoogieDeclarations]: Found implementation of procedure kill_fasync [2022-11-20 09:27:55,933 INFO L130 BoogieDeclarations]: Found specification of procedure input_close_device [2022-11-20 09:27:55,933 INFO L138 BoogieDeclarations]: Found implementation of procedure input_close_device [2022-11-20 09:27:55,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2022-11-20 09:27:55,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2022-11-20 09:27:55,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-11-20 09:27:55,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2022-11-20 09:27:55,934 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2022-11-20 09:27:55,934 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2022-11-20 09:27:55,935 INFO L130 BoogieDeclarations]: Found specification of procedure __read_once_size [2022-11-20 09:27:55,935 INFO L138 BoogieDeclarations]: Found implementation of procedure __read_once_size [2022-11-20 09:27:55,935 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-20 09:27:55,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-20 09:27:55,935 INFO L130 BoogieDeclarations]: Found specification of procedure input_get_new_minor [2022-11-20 09:27:55,935 INFO L138 BoogieDeclarations]: Found implementation of procedure input_get_new_minor [2022-11-20 09:27:55,936 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 09:27:55,936 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-20 09:27:55,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-20 09:27:55,936 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 09:27:55,936 INFO L130 BoogieDeclarations]: Found specification of procedure mousedev_write [2022-11-20 09:27:55,936 INFO L138 BoogieDeclarations]: Found implementation of procedure mousedev_write [2022-11-20 09:27:55,937 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-20 09:27:55,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-20 09:27:55,937 INFO L130 BoogieDeclarations]: Found specification of procedure input_unregister_handle [2022-11-20 09:27:55,937 INFO L138 BoogieDeclarations]: Found implementation of procedure input_unregister_handle [2022-11-20 09:27:55,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 09:27:55,937 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_suspicious [2022-11-20 09:27:55,938 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_suspicious [2022-11-20 09:27:55,938 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-20 09:27:55,938 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2022-11-20 09:27:55,938 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2022-11-20 09:27:55,938 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2022-11-20 09:27:55,938 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mutex_of_mousedev [2022-11-20 09:27:55,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mutex_of_mousedev [2022-11-20 09:27:55,939 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2022-11-20 09:27:55,939 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2022-11-20 09:27:55,939 INFO L130 BoogieDeclarations]: Found specification of procedure mousedev_detach_client [2022-11-20 09:27:55,939 INFO L138 BoogieDeclarations]: Found implementation of procedure mousedev_detach_client [2022-11-20 09:27:55,940 INFO L130 BoogieDeclarations]: Found specification of procedure input_abs_get_max [2022-11-20 09:27:55,940 INFO L138 BoogieDeclarations]: Found implementation of procedure input_abs_get_max [2022-11-20 09:27:55,940 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-11-20 09:27:55,940 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-11-20 09:27:55,940 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2022-11-20 09:27:55,940 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2022-11-20 09:27:55,941 INFO L130 BoogieDeclarations]: Found specification of procedure input_free_minor [2022-11-20 09:27:55,941 INFO L138 BoogieDeclarations]: Found implementation of procedure input_free_minor [2022-11-20 09:27:55,941 INFO L130 BoogieDeclarations]: Found specification of procedure mousedev_cleanup [2022-11-20 09:27:55,941 INFO L138 BoogieDeclarations]: Found implementation of procedure mousedev_cleanup [2022-11-20 09:27:55,941 INFO L130 BoogieDeclarations]: Found specification of procedure mousedev_open_device [2022-11-20 09:27:55,941 INFO L138 BoogieDeclarations]: Found implementation of procedure mousedev_open_device [2022-11-20 09:27:55,942 INFO L130 BoogieDeclarations]: Found specification of procedure mousedev_disconnect [2022-11-20 09:27:55,942 INFO L138 BoogieDeclarations]: Found implementation of procedure mousedev_disconnect [2022-11-20 09:27:55,942 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_mutex_of_mousedev [2022-11-20 09:27:55,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_mutex_of_mousedev [2022-11-20 09:27:55,942 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-20 09:27:55,943 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-20 09:27:55,943 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-20 09:27:55,943 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-20 09:27:55,943 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2022-11-20 09:27:55,943 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 09:27:55,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 09:27:55,944 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-20 09:27:55,944 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-20 09:27:56,559 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 09:27:56,562 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 09:27:59,584 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-20 09:28:27,068 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 09:28:27,090 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 09:28:27,090 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-20 09:28:27,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:28:27 BoogieIcfgContainer [2022-11-20 09:28:27,095 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 09:28:27,097 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 09:28:27,097 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 09:28:27,101 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 09:28:27,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:27:52" (1/3) ... [2022-11-20 09:28:27,102 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@424999b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:28:27, skipping insertion in model container [2022-11-20 09:28:27,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:55" (2/3) ... [2022-11-20 09:28:27,103 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@424999b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:28:27, skipping insertion in model container [2022-11-20 09:28:27,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:28:27" (3/3) ... [2022-11-20 09:28:27,104 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--input--mousedev.ko-entry_point.cil.out.i [2022-11-20 09:28:27,126 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 09:28:27,127 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 09:28:27,211 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 09:28:27,217 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6648823d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 09:28:27,217 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 09:28:27,226 INFO L276 IsEmpty]: Start isEmpty. Operand has 952 states, 693 states have (on average 1.3694083694083694) internal successors, (949), 725 states have internal predecessors, (949), 195 states have call successors, (195), 63 states have call predecessors, (195), 62 states have return successors, (191), 188 states have call predecessors, (191), 191 states have call successors, (191) [2022-11-20 09:28:27,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2022-11-20 09:28:27,247 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:28:27,248 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 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] [2022-11-20 09:28:27,249 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:28:27,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:27,255 INFO L85 PathProgramCache]: Analyzing trace with hash 125762173, now seen corresponding path program 1 times [2022-11-20 09:28:27,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:28:27,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1898683999] [2022-11-20 09:28:27,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:27,274 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 09:28:27,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:28:27,283 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 09:28:27,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-20 09:28:28,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:28,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 2422 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-20 09:28:28,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:28:28,999 INFO L134 CoverageAnalysis]: Checked inductivity of 716 backedges. 183 proven. 0 refuted. 0 times theorem prover too weak. 533 trivial. 0 not checked. [2022-11-20 09:28:28,999 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:28:29,000 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:28:29,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1898683999] [2022-11-20 09:28:29,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1898683999] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:28:29,001 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:28:29,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 09:28:29,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405383450] [2022-11-20 09:28:29,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:28:29,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 09:28:29,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:28:29,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 09:28:29,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 09:28:29,047 INFO L87 Difference]: Start difference. First operand has 952 states, 693 states have (on average 1.3694083694083694) internal successors, (949), 725 states have internal predecessors, (949), 195 states have call successors, (195), 63 states have call predecessors, (195), 62 states have return successors, (191), 188 states have call predecessors, (191), 191 states have call successors, (191) Second operand has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-20 09:28:29,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:28:29,191 INFO L93 Difference]: Finished difference Result 1899 states and 2717 transitions. [2022-11-20 09:28:29,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 09:28:29,193 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 244 [2022-11-20 09:28:29,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:28:29,213 INFO L225 Difference]: With dead ends: 1899 [2022-11-20 09:28:29,214 INFO L226 Difference]: Without dead ends: 941 [2022-11-20 09:28:29,250 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 09:28:29,255 INFO L413 NwaCegarLoop]: 1325 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1325 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 09:28:29,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1325 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 09:28:29,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 941 states. [2022-11-20 09:28:29,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 941 to 941. [2022-11-20 09:28:29,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 941 states, 688 states have (on average 1.3619186046511629) internal successors, (937), 714 states have internal predecessors, (937), 191 states have call successors, (191), 62 states have call predecessors, (191), 61 states have return successors, (184), 181 states have call predecessors, (184), 184 states have call successors, (184) [2022-11-20 09:28:29,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 941 states to 941 states and 1312 transitions. [2022-11-20 09:28:29,408 INFO L78 Accepts]: Start accepts. Automaton has 941 states and 1312 transitions. Word has length 244 [2022-11-20 09:28:29,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:28:29,410 INFO L495 AbstractCegarLoop]: Abstraction has 941 states and 1312 transitions. [2022-11-20 09:28:29,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-20 09:28:29,410 INFO L276 IsEmpty]: Start isEmpty. Operand 941 states and 1312 transitions. [2022-11-20 09:28:29,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2022-11-20 09:28:29,426 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:28:29,427 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 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] [2022-11-20 09:28:29,476 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-20 09:28:29,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 09:28:29,649 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:28:29,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:29,650 INFO L85 PathProgramCache]: Analyzing trace with hash 263166605, now seen corresponding path program 1 times [2022-11-20 09:28:29,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:28:29,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [589035975] [2022-11-20 09:28:29,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:29,654 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 09:28:29,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:28:29,656 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 09:28:29,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-20 09:28:31,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:31,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 2422 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 09:28:31,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:28:32,121 INFO L134 CoverageAnalysis]: Checked inductivity of 716 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 644 trivial. 0 not checked. [2022-11-20 09:28:32,121 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:28:32,121 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:28:32,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [589035975] [2022-11-20 09:28:32,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [589035975] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:28:32,122 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:28:32,122 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 09:28:32,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245626933] [2022-11-20 09:28:32,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:28:32,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 09:28:32,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:28:32,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 09:28:32,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 09:28:32,126 INFO L87 Difference]: Start difference. First operand 941 states and 1312 transitions. Second operand has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-11-20 09:28:33,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:28:33,182 INFO L93 Difference]: Finished difference Result 1868 states and 2618 transitions. [2022-11-20 09:28:33,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 09:28:33,184 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 244 [2022-11-20 09:28:33,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:28:33,190 INFO L225 Difference]: With dead ends: 1868 [2022-11-20 09:28:33,191 INFO L226 Difference]: Without dead ends: 942 [2022-11-20 09:28:33,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 09:28:33,195 INFO L413 NwaCegarLoop]: 1300 mSDtfsCounter, 6 mSDsluCounter, 5172 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 6472 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-20 09:28:33,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 6472 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-20 09:28:33,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 942 states. [2022-11-20 09:28:33,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 942 to 942. [2022-11-20 09:28:33,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 942 states, 689 states have (on average 1.3613933236574747) internal successors, (938), 715 states have internal predecessors, (938), 191 states have call successors, (191), 62 states have call predecessors, (191), 61 states have return successors, (184), 181 states have call predecessors, (184), 184 states have call successors, (184) [2022-11-20 09:28:33,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 942 states to 942 states and 1313 transitions. [2022-11-20 09:28:33,237 INFO L78 Accepts]: Start accepts. Automaton has 942 states and 1313 transitions. Word has length 244 [2022-11-20 09:28:33,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:28:33,239 INFO L495 AbstractCegarLoop]: Abstraction has 942 states and 1313 transitions. [2022-11-20 09:28:33,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-11-20 09:28:33,240 INFO L276 IsEmpty]: Start isEmpty. Operand 942 states and 1313 transitions. [2022-11-20 09:28:33,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2022-11-20 09:28:33,244 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:28:33,244 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 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] [2022-11-20 09:28:33,283 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-20 09:28:33,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 09:28:33,457 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:28:33,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:33,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1179776947, now seen corresponding path program 1 times [2022-11-20 09:28:33,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:28:33,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1152699351] [2022-11-20 09:28:33,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:33,462 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 09:28:33,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:28:33,463 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 09:28:33,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-20 09:28:35,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:35,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 2521 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 09:28:35,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:28:35,787 INFO L134 CoverageAnalysis]: Checked inductivity of 833 backedges. 96 proven. 1 refuted. 0 times theorem prover too weak. 736 trivial. 0 not checked. [2022-11-20 09:28:35,788 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:28:37,421 INFO L134 CoverageAnalysis]: Checked inductivity of 833 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 752 trivial. 0 not checked. [2022-11-20 09:28:37,422 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:28:37,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1152699351] [2022-11-20 09:28:37,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1152699351] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:28:37,422 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:28:37,423 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2022-11-20 09:28:37,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935183147] [2022-11-20 09:28:37,423 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:28:37,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 09:28:37,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:28:37,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 09:28:37,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-11-20 09:28:37,425 INFO L87 Difference]: Start difference. First operand 942 states and 1313 transitions. Second operand has 11 states, 9 states have (on average 7.444444444444445) internal successors, (67), 11 states have internal predecessors, (67), 4 states have call successors, (34), 2 states have call predecessors, (34), 5 states have return successors, (32), 4 states have call predecessors, (32), 4 states have call successors, (32) [2022-11-20 09:28:39,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:28:39,290 INFO L93 Difference]: Finished difference Result 1875 states and 2626 transitions. [2022-11-20 09:28:39,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 09:28:39,291 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 7.444444444444445) internal successors, (67), 11 states have internal predecessors, (67), 4 states have call successors, (34), 2 states have call predecessors, (34), 5 states have return successors, (32), 4 states have call predecessors, (32), 4 states have call successors, (32) Word has length 253 [2022-11-20 09:28:39,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:28:39,298 INFO L225 Difference]: With dead ends: 1875 [2022-11-20 09:28:39,298 INFO L226 Difference]: Without dead ends: 948 [2022-11-20 09:28:39,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 507 GetRequests, 495 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-11-20 09:28:39,303 INFO L413 NwaCegarLoop]: 1301 mSDtfsCounter, 10 mSDsluCounter, 9047 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 10348 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-20 09:28:39,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 10348 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-20 09:28:39,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 948 states. [2022-11-20 09:28:39,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 948 to 948. [2022-11-20 09:28:39,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 948 states, 693 states have (on average 1.3593073593073592) internal successors, (942), 719 states have internal predecessors, (942), 192 states have call successors, (192), 63 states have call predecessors, (192), 62 states have return successors, (185), 182 states have call predecessors, (185), 185 states have call successors, (185) [2022-11-20 09:28:39,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 948 states to 948 states and 1319 transitions. [2022-11-20 09:28:39,342 INFO L78 Accepts]: Start accepts. Automaton has 948 states and 1319 transitions. Word has length 253 [2022-11-20 09:28:39,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:28:39,343 INFO L495 AbstractCegarLoop]: Abstraction has 948 states and 1319 transitions. [2022-11-20 09:28:39,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 7.444444444444445) internal successors, (67), 11 states have internal predecessors, (67), 4 states have call successors, (34), 2 states have call predecessors, (34), 5 states have return successors, (32), 4 states have call predecessors, (32), 4 states have call successors, (32) [2022-11-20 09:28:39,343 INFO L276 IsEmpty]: Start isEmpty. Operand 948 states and 1319 transitions. [2022-11-20 09:28:39,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2022-11-20 09:28:39,347 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:28:39,348 INFO L195 NwaCegarLoop]: trace histogram [18, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 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] [2022-11-20 09:28:39,387 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2022-11-20 09:28:39,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 09:28:39,571 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:28:39,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:39,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1071870797, now seen corresponding path program 2 times [2022-11-20 09:28:39,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:28:39,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [292638690] [2022-11-20 09:28:39,574 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 09:28:39,574 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 09:28:39,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:28:39,575 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 09:28:39,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-20 09:28:40,682 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 09:28:40,683 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:28:40,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 1789 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 09:28:40,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:28:40,831 INFO L134 CoverageAnalysis]: Checked inductivity of 1031 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1031 trivial. 0 not checked. [2022-11-20 09:28:40,832 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:28:40,832 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:28:40,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [292638690] [2022-11-20 09:28:40,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [292638690] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:28:40,832 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:28:40,832 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:28:40,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291330514] [2022-11-20 09:28:40,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:28:40,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:28:40,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:28:40,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:28:40,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:28:40,835 INFO L87 Difference]: Start difference. First operand 948 states and 1319 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2022-11-20 09:28:41,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:28:41,413 INFO L93 Difference]: Finished difference Result 2437 states and 3353 transitions. [2022-11-20 09:28:41,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:28:41,415 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 262 [2022-11-20 09:28:41,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:28:41,428 INFO L225 Difference]: With dead ends: 2437 [2022-11-20 09:28:41,428 INFO L226 Difference]: Without dead ends: 1536 [2022-11-20 09:28:41,434 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:28:41,437 INFO L413 NwaCegarLoop]: 1481 mSDtfsCounter, 830 mSDsluCounter, 1229 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 830 SdHoareTripleChecker+Valid, 2710 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 09:28:41,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [830 Valid, 2710 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 09:28:41,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1536 states. [2022-11-20 09:28:41,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1536 to 1521. [2022-11-20 09:28:41,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1521 states, 1108 states have (on average 1.3384476534296028) internal successors, (1483), 1147 states have internal predecessors, (1483), 302 states have call successors, (302), 111 states have call predecessors, (302), 110 states have return successors, (295), 290 states have call predecessors, (295), 295 states have call successors, (295) [2022-11-20 09:28:41,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1521 states to 1521 states and 2080 transitions. [2022-11-20 09:28:41,526 INFO L78 Accepts]: Start accepts. Automaton has 1521 states and 2080 transitions. Word has length 262 [2022-11-20 09:28:41,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:28:41,530 INFO L495 AbstractCegarLoop]: Abstraction has 1521 states and 2080 transitions. [2022-11-20 09:28:41,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2022-11-20 09:28:41,530 INFO L276 IsEmpty]: Start isEmpty. Operand 1521 states and 2080 transitions. [2022-11-20 09:28:41,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2022-11-20 09:28:41,535 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:28:41,535 INFO L195 NwaCegarLoop]: trace histogram [18, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 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, 1, 1, 1] [2022-11-20 09:28:41,578 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-20 09:28:41,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 09:28:41,759 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:28:41,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:41,760 INFO L85 PathProgramCache]: Analyzing trace with hash -17033723, now seen corresponding path program 1 times [2022-11-20 09:28:41,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:28:41,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [63755094] [2022-11-20 09:28:41,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:41,761 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 09:28:41,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:28:41,762 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 09:28:41,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-20 09:28:43,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:43,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 2644 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 09:28:43,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:28:44,137 INFO L134 CoverageAnalysis]: Checked inductivity of 1031 backedges. 136 proven. 3 refuted. 0 times theorem prover too weak. 892 trivial. 0 not checked. [2022-11-20 09:28:44,137 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:28:46,177 INFO L134 CoverageAnalysis]: Checked inductivity of 1031 backedges. 0 proven. 123 refuted. 0 times theorem prover too weak. 908 trivial. 0 not checked. [2022-11-20 09:28:46,178 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:28:46,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [63755094] [2022-11-20 09:28:46,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [63755094] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:28:46,178 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:28:46,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2022-11-20 09:28:46,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867082782] [2022-11-20 09:28:46,179 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:28:46,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 09:28:46,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:28:46,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 09:28:46,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2022-11-20 09:28:46,181 INFO L87 Difference]: Start difference. First operand 1521 states and 2080 transitions. Second operand has 13 states, 11 states have (on average 6.636363636363637) internal successors, (73), 13 states have internal predecessors, (73), 4 states have call successors, (35), 2 states have call predecessors, (35), 5 states have return successors, (32), 4 states have call predecessors, (32), 4 states have call successors, (32) [2022-11-20 09:28:48,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:28:48,554 INFO L93 Difference]: Finished difference Result 3034 states and 4160 transitions. [2022-11-20 09:28:48,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 09:28:48,555 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 6.636363636363637) internal successors, (73), 13 states have internal predecessors, (73), 4 states have call successors, (35), 2 states have call predecessors, (35), 5 states have return successors, (32), 4 states have call predecessors, (32), 4 states have call successors, (32) Word has length 267 [2022-11-20 09:28:48,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:28:48,564 INFO L225 Difference]: With dead ends: 3034 [2022-11-20 09:28:48,565 INFO L226 Difference]: Without dead ends: 1523 [2022-11-20 09:28:48,570 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 535 GetRequests, 521 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2022-11-20 09:28:48,571 INFO L413 NwaCegarLoop]: 1301 mSDtfsCounter, 9 mSDsluCounter, 11651 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 12952 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-20 09:28:48,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 12952 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-20 09:28:48,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1523 states. [2022-11-20 09:28:48,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1523 to 1523. [2022-11-20 09:28:48,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1523 states, 1110 states have (on average 1.337837837837838) internal successors, (1485), 1149 states have internal predecessors, (1485), 302 states have call successors, (302), 111 states have call predecessors, (302), 110 states have return successors, (295), 290 states have call predecessors, (295), 295 states have call successors, (295) [2022-11-20 09:28:48,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1523 states to 1523 states and 2082 transitions. [2022-11-20 09:28:48,636 INFO L78 Accepts]: Start accepts. Automaton has 1523 states and 2082 transitions. Word has length 267 [2022-11-20 09:28:48,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:28:48,637 INFO L495 AbstractCegarLoop]: Abstraction has 1523 states and 2082 transitions. [2022-11-20 09:28:48,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 6.636363636363637) internal successors, (73), 13 states have internal predecessors, (73), 4 states have call successors, (35), 2 states have call predecessors, (35), 5 states have return successors, (32), 4 states have call predecessors, (32), 4 states have call successors, (32) [2022-11-20 09:28:48,637 INFO L276 IsEmpty]: Start isEmpty. Operand 1523 states and 2082 transitions. [2022-11-20 09:28:48,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2022-11-20 09:28:48,641 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:28:48,641 INFO L195 NwaCegarLoop]: trace histogram [27, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 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, 1, 1, 1] [2022-11-20 09:28:48,690 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-20 09:28:48,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 09:28:48,863 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:28:48,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:48,864 INFO L85 PathProgramCache]: Analyzing trace with hash -248456673, now seen corresponding path program 2 times [2022-11-20 09:28:48,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:28:48,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1306285614] [2022-11-20 09:28:48,866 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 09:28:48,866 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 09:28:48,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:28:48,868 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 09:28:48,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-20 09:28:50,132 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 09:28:50,133 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:28:50,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 1813 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 09:28:50,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:28:50,321 INFO L134 CoverageAnalysis]: Checked inductivity of 1310 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1310 trivial. 0 not checked. [2022-11-20 09:28:50,322 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:28:50,322 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:28:50,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1306285614] [2022-11-20 09:28:50,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1306285614] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:28:50,322 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:28:50,322 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:28:50,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51037021] [2022-11-20 09:28:50,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:28:50,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:28:50,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:28:50,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:28:50,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:28:50,324 INFO L87 Difference]: Start difference. First operand 1523 states and 2082 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2022-11-20 09:28:52,466 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 09:28:52,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:28:52,784 INFO L93 Difference]: Finished difference Result 4319 states and 5909 transitions. [2022-11-20 09:28:52,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:28:52,785 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 276 [2022-11-20 09:28:52,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:28:52,800 INFO L225 Difference]: With dead ends: 4319 [2022-11-20 09:28:52,801 INFO L226 Difference]: Without dead ends: 2850 [2022-11-20 09:28:52,806 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 274 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:28:52,807 INFO L413 NwaCegarLoop]: 1975 mSDtfsCounter, 1218 mSDsluCounter, 1274 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1218 SdHoareTripleChecker+Valid, 3249 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-20 09:28:52,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1218 Valid, 3249 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-11-20 09:28:52,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2850 states. [2022-11-20 09:28:52,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2850 to 2845. [2022-11-20 09:28:52,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2845 states, 2083 states have (on average 1.342774843975036) internal successors, (2797), 2150 states have internal predecessors, (2797), 549 states have call successors, (549), 213 states have call predecessors, (549), 212 states have return successors, (542), 533 states have call predecessors, (542), 542 states have call successors, (542) [2022-11-20 09:28:52,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2845 states to 2845 states and 3888 transitions. [2022-11-20 09:28:52,938 INFO L78 Accepts]: Start accepts. Automaton has 2845 states and 3888 transitions. Word has length 276 [2022-11-20 09:28:52,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:28:52,939 INFO L495 AbstractCegarLoop]: Abstraction has 2845 states and 3888 transitions. [2022-11-20 09:28:52,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2022-11-20 09:28:52,939 INFO L276 IsEmpty]: Start isEmpty. Operand 2845 states and 3888 transitions. [2022-11-20 09:28:52,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2022-11-20 09:28:52,945 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:28:52,945 INFO L195 NwaCegarLoop]: trace histogram [27, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 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, 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] [2022-11-20 09:28:52,982 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-20 09:28:53,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 09:28:53,159 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:28:53,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:53,160 INFO L85 PathProgramCache]: Analyzing trace with hash 214644690, now seen corresponding path program 1 times [2022-11-20 09:28:53,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:28:53,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [309388494] [2022-11-20 09:28:53,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:53,163 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 09:28:53,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:28:53,168 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 09:28:53,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-20 09:28:55,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:55,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 2820 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 09:28:55,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:28:56,096 INFO L134 CoverageAnalysis]: Checked inductivity of 1310 backedges. 192 proven. 6 refuted. 0 times theorem prover too weak. 1112 trivial. 0 not checked. [2022-11-20 09:28:56,096 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:28:59,191 INFO L134 CoverageAnalysis]: Checked inductivity of 1310 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 1128 trivial. 0 not checked. [2022-11-20 09:28:59,191 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:28:59,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [309388494] [2022-11-20 09:28:59,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [309388494] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:28:59,192 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:28:59,192 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2022-11-20 09:28:59,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833043872] [2022-11-20 09:28:59,192 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:28:59,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 09:28:59,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:28:59,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 09:28:59,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2022-11-20 09:28:59,194 INFO L87 Difference]: Start difference. First operand 2845 states and 3888 transitions. Second operand has 15 states, 13 states have (on average 8.461538461538462) internal successors, (110), 15 states have internal predecessors, (110), 4 states have call successors, (44), 2 states have call predecessors, (44), 5 states have return successors, (42), 4 states have call predecessors, (42), 4 states have call successors, (42) [2022-11-20 09:29:01,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:29:01,532 INFO L93 Difference]: Finished difference Result 5675 states and 7777 transitions. [2022-11-20 09:29:01,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 09:29:01,534 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 8.461538461538462) internal successors, (110), 15 states have internal predecessors, (110), 4 states have call successors, (44), 2 states have call predecessors, (44), 5 states have return successors, (42), 4 states have call predecessors, (42), 4 states have call successors, (42) Word has length 302 [2022-11-20 09:29:01,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:29:01,549 INFO L225 Difference]: With dead ends: 5675 [2022-11-20 09:29:01,549 INFO L226 Difference]: Without dead ends: 2848 [2022-11-20 09:29:01,560 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 605 GetRequests, 589 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2022-11-20 09:29:01,560 INFO L413 NwaCegarLoop]: 1301 mSDtfsCounter, 14 mSDsluCounter, 7781 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 9082 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-20 09:29:01,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 9082 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-20 09:29:01,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2848 states. [2022-11-20 09:29:01,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2848 to 2848. [2022-11-20 09:29:01,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2848 states, 2086 states have (on average 1.342281879194631) internal successors, (2800), 2153 states have internal predecessors, (2800), 549 states have call successors, (549), 213 states have call predecessors, (549), 212 states have return successors, (542), 533 states have call predecessors, (542), 542 states have call successors, (542) [2022-11-20 09:29:01,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2848 states to 2848 states and 3891 transitions. [2022-11-20 09:29:01,726 INFO L78 Accepts]: Start accepts. Automaton has 2848 states and 3891 transitions. Word has length 302 [2022-11-20 09:29:01,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:29:01,726 INFO L495 AbstractCegarLoop]: Abstraction has 2848 states and 3891 transitions. [2022-11-20 09:29:01,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 8.461538461538462) internal successors, (110), 15 states have internal predecessors, (110), 4 states have call successors, (44), 2 states have call predecessors, (44), 5 states have return successors, (42), 4 states have call predecessors, (42), 4 states have call successors, (42) [2022-11-20 09:29:01,727 INFO L276 IsEmpty]: Start isEmpty. Operand 2848 states and 3891 transitions. [2022-11-20 09:29:01,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2022-11-20 09:29:01,733 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:29:01,733 INFO L195 NwaCegarLoop]: trace histogram [36, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 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, 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] [2022-11-20 09:29:01,791 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-20 09:29:01,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 09:29:01,951 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:29:01,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:29:01,952 INFO L85 PathProgramCache]: Analyzing trace with hash -14811272, now seen corresponding path program 2 times [2022-11-20 09:29:01,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:29:01,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1285093764] [2022-11-20 09:29:01,955 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 09:29:01,955 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 09:29:01,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:29:01,957 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 09:29:01,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-20 09:29:03,371 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 09:29:03,371 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:29:03,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 1890 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 09:29:03,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:29:03,572 INFO L134 CoverageAnalysis]: Checked inductivity of 1670 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1670 trivial. 0 not checked. [2022-11-20 09:29:03,572 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:29:03,572 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:29:03,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1285093764] [2022-11-20 09:29:03,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1285093764] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:29:03,573 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:29:03,573 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:29:03,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123766132] [2022-11-20 09:29:03,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:29:03,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:29:03,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:29:03,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:29:03,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:29:03,575 INFO L87 Difference]: Start difference. First operand 2848 states and 3891 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-20 09:29:04,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:29:04,551 INFO L93 Difference]: Finished difference Result 7077 states and 9638 transitions. [2022-11-20 09:29:04,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:29:04,552 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 311 [2022-11-20 09:29:04,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:29:04,585 INFO L225 Difference]: With dead ends: 7077 [2022-11-20 09:29:04,585 INFO L226 Difference]: Without dead ends: 4294 [2022-11-20 09:29:04,597 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 309 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:29:04,598 INFO L413 NwaCegarLoop]: 1426 mSDtfsCounter, 911 mSDsluCounter, 1188 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 911 SdHoareTripleChecker+Valid, 2614 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-20 09:29:04,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [911 Valid, 2614 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-20 09:29:04,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4294 states. [2022-11-20 09:29:04,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4294 to 4254. [2022-11-20 09:29:04,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4254 states, 3119 states have (on average 1.3427380570695735) internal successors, (4188), 3220 states have internal predecessors, (4188), 797 states have call successors, (797), 348 states have call predecessors, (797), 337 states have return successors, (798), 759 states have call predecessors, (798), 790 states have call successors, (798) [2022-11-20 09:29:04,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4254 states to 4254 states and 5783 transitions. [2022-11-20 09:29:04,929 INFO L78 Accepts]: Start accepts. Automaton has 4254 states and 5783 transitions. Word has length 311 [2022-11-20 09:29:04,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:29:04,930 INFO L495 AbstractCegarLoop]: Abstraction has 4254 states and 5783 transitions. [2022-11-20 09:29:04,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-20 09:29:04,931 INFO L276 IsEmpty]: Start isEmpty. Operand 4254 states and 5783 transitions. [2022-11-20 09:29:04,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2022-11-20 09:29:04,937 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:29:04,937 INFO L195 NwaCegarLoop]: trace histogram [36, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 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, 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] [2022-11-20 09:29:04,981 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-20 09:29:05,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 09:29:05,159 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:29:05,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:29:05,160 INFO L85 PathProgramCache]: Analyzing trace with hash 284682008, now seen corresponding path program 1 times [2022-11-20 09:29:05,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:29:05,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [444298399] [2022-11-20 09:29:05,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:05,163 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 09:29:05,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:29:05,164 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 09:29:05,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-20 09:29:08,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:08,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 2962 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 09:29:08,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:29:09,270 INFO L134 CoverageAnalysis]: Checked inductivity of 1670 backedges. 753 proven. 10 refuted. 0 times theorem prover too weak. 907 trivial. 0 not checked. [2022-11-20 09:29:09,271 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:29:13,139 INFO L134 CoverageAnalysis]: Checked inductivity of 1670 backedges. 93 proven. 165 refuted. 0 times theorem prover too weak. 1412 trivial. 0 not checked. [2022-11-20 09:29:13,140 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:29:13,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [444298399] [2022-11-20 09:29:13,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [444298399] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:29:13,140 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:29:13,140 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2022-11-20 09:29:13,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394446734] [2022-11-20 09:29:13,141 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:29:13,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-20 09:29:13,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:29:13,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-20 09:29:13,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2022-11-20 09:29:13,143 INFO L87 Difference]: Start difference. First operand 4254 states and 5783 transitions. Second operand has 17 states, 15 states have (on average 7.733333333333333) internal successors, (116), 17 states have internal predecessors, (116), 4 states have call successors, (40), 2 states have call predecessors, (40), 5 states have return successors, (37), 4 states have call predecessors, (37), 4 states have call successors, (37) [2022-11-20 09:29:16,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:29:16,687 INFO L93 Difference]: Finished difference Result 8498 states and 11591 transitions. [2022-11-20 09:29:16,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 09:29:16,688 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 7.733333333333333) internal successors, (116), 17 states have internal predecessors, (116), 4 states have call successors, (40), 2 states have call predecessors, (40), 5 states have return successors, (37), 4 states have call predecessors, (37), 4 states have call successors, (37) Word has length 314 [2022-11-20 09:29:16,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:29:16,720 INFO L225 Difference]: With dead ends: 8498 [2022-11-20 09:29:16,721 INFO L226 Difference]: Without dead ends: 4267 [2022-11-20 09:29:16,742 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 632 GetRequests, 611 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2022-11-20 09:29:16,744 INFO L413 NwaCegarLoop]: 1300 mSDtfsCounter, 29 mSDsluCounter, 11663 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 12963 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-20 09:29:16,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 12963 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-20 09:29:16,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4267 states. [2022-11-20 09:29:17,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4267 to 4267. [2022-11-20 09:29:17,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4267 states, 3131 states have (on average 1.3417438518045353) internal successors, (4201), 3232 states have internal predecessors, (4201), 797 states have call successors, (797), 349 states have call predecessors, (797), 338 states have return successors, (798), 759 states have call predecessors, (798), 790 states have call successors, (798) [2022-11-20 09:29:17,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4267 states to 4267 states and 5796 transitions. [2022-11-20 09:29:17,034 INFO L78 Accepts]: Start accepts. Automaton has 4267 states and 5796 transitions. Word has length 314 [2022-11-20 09:29:17,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:29:17,036 INFO L495 AbstractCegarLoop]: Abstraction has 4267 states and 5796 transitions. [2022-11-20 09:29:17,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 7.733333333333333) internal successors, (116), 17 states have internal predecessors, (116), 4 states have call successors, (40), 2 states have call predecessors, (40), 5 states have return successors, (37), 4 states have call predecessors, (37), 4 states have call successors, (37) [2022-11-20 09:29:17,036 INFO L276 IsEmpty]: Start isEmpty. Operand 4267 states and 5796 transitions. [2022-11-20 09:29:17,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2022-11-20 09:29:17,042 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:29:17,044 INFO L195 NwaCegarLoop]: trace histogram [39, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 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, 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] [2022-11-20 09:29:17,107 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-20 09:29:17,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 09:29:17,258 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:29:17,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:29:17,259 INFO L85 PathProgramCache]: Analyzing trace with hash -1792327742, now seen corresponding path program 2 times [2022-11-20 09:29:17,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:29:17,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1986232405] [2022-11-20 09:29:17,260 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 09:29:17,261 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 09:29:17,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:29:17,261 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 09:29:17,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-20 09:29:18,632 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 09:29:18,633 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:29:18,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 1933 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 09:29:18,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:29:19,317 INFO L134 CoverageAnalysis]: Checked inductivity of 1808 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1808 trivial. 0 not checked. [2022-11-20 09:29:19,317 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:29:19,317 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:29:19,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1986232405] [2022-11-20 09:29:19,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1986232405] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:29:19,318 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:29:19,318 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 09:29:19,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099096009] [2022-11-20 09:29:19,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:29:19,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 09:29:19,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:29:19,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 09:29:19,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 09:29:19,320 INFO L87 Difference]: Start difference. First operand 4267 states and 5796 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 3 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2022-11-20 09:29:20,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:29:20,133 INFO L93 Difference]: Finished difference Result 8640 states and 11776 transitions. [2022-11-20 09:29:20,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 09:29:20,134 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 3 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 317 [2022-11-20 09:29:20,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:29:20,159 INFO L225 Difference]: With dead ends: 8640 [2022-11-20 09:29:20,159 INFO L226 Difference]: Without dead ends: 4433 [2022-11-20 09:29:20,175 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 314 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 09:29:20,176 INFO L413 NwaCegarLoop]: 1336 mSDtfsCounter, 144 mSDsluCounter, 2534 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 3870 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 09:29:20,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 3870 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 09:29:20,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4433 states. [2022-11-20 09:29:20,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4433 to 4421. [2022-11-20 09:29:20,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4421 states, 3251 states have (on average 1.3374346354967703) internal successors, (4348), 3360 states have internal predecessors, (4348), 829 states have call successors, (829), 351 states have call predecessors, (829), 340 states have return successors, (829), 789 states have call predecessors, (829), 821 states have call successors, (829) [2022-11-20 09:29:20,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4421 states to 4421 states and 6006 transitions. [2022-11-20 09:29:20,480 INFO L78 Accepts]: Start accepts. Automaton has 4421 states and 6006 transitions. Word has length 317 [2022-11-20 09:29:20,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:29:20,481 INFO L495 AbstractCegarLoop]: Abstraction has 4421 states and 6006 transitions. [2022-11-20 09:29:20,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 3 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2022-11-20 09:29:20,481 INFO L276 IsEmpty]: Start isEmpty. Operand 4421 states and 6006 transitions. [2022-11-20 09:29:20,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2022-11-20 09:29:20,484 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:29:20,485 INFO L195 NwaCegarLoop]: trace histogram [39, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 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, 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] [2022-11-20 09:29:20,518 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-20 09:29:20,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 09:29:20,707 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:29:20,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:29:20,708 INFO L85 PathProgramCache]: Analyzing trace with hash -585114312, now seen corresponding path program 1 times [2022-11-20 09:29:20,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:29:20,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [157759588] [2022-11-20 09:29:20,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:20,710 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 09:29:20,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:29:20,712 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 09:29:20,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-20 09:29:23,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:23,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 2995 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 09:29:23,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:29:24,818 INFO L134 CoverageAnalysis]: Checked inductivity of 1808 backedges. 835 proven. 15 refuted. 0 times theorem prover too weak. 958 trivial. 0 not checked. [2022-11-20 09:29:24,819 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:29:29,606 INFO L134 CoverageAnalysis]: Checked inductivity of 1808 backedges. 108 proven. 207 refuted. 0 times theorem prover too weak. 1493 trivial. 0 not checked. [2022-11-20 09:29:29,606 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:29:29,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [157759588] [2022-11-20 09:29:29,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [157759588] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:29:29,607 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:29:29,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2022-11-20 09:29:29,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777008133] [2022-11-20 09:29:29,607 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:29:29,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 09:29:29,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:29:29,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 09:29:29,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2022-11-20 09:29:29,609 INFO L87 Difference]: Start difference. First operand 4421 states and 6006 transitions. Second operand has 19 states, 17 states have (on average 6.9411764705882355) internal successors, (118), 19 states have internal predecessors, (118), 4 states have call successors, (40), 2 states have call predecessors, (40), 5 states have return successors, (37), 4 states have call predecessors, (37), 4 states have call successors, (37) [2022-11-20 09:29:34,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:29:34,452 INFO L93 Difference]: Finished difference Result 8820 states and 12014 transitions. [2022-11-20 09:29:34,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 09:29:34,453 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 6.9411764705882355) internal successors, (118), 19 states have internal predecessors, (118), 4 states have call successors, (40), 2 states have call predecessors, (40), 5 states have return successors, (37), 4 states have call predecessors, (37), 4 states have call successors, (37) Word has length 317 [2022-11-20 09:29:34,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:29:34,489 INFO L225 Difference]: With dead ends: 8820 [2022-11-20 09:29:34,489 INFO L226 Difference]: Without dead ends: 4426 [2022-11-20 09:29:34,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 639 GetRequests, 615 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=132, Invalid=518, Unknown=0, NotChecked=0, Total=650 [2022-11-20 09:29:34,506 INFO L413 NwaCegarLoop]: 1300 mSDtfsCounter, 30 mSDsluCounter, 18133 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 19433 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-11-20 09:29:34,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 19433 Invalid, 346 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [32 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-11-20 09:29:34,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4426 states. [2022-11-20 09:29:34,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4426 to 4426. [2022-11-20 09:29:34,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4426 states, 3256 states have (on average 1.336916461916462) internal successors, (4353), 3365 states have internal predecessors, (4353), 829 states have call successors, (829), 351 states have call predecessors, (829), 340 states have return successors, (829), 789 states have call predecessors, (829), 821 states have call successors, (829) [2022-11-20 09:29:34,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4426 states to 4426 states and 6011 transitions. [2022-11-20 09:29:34,802 INFO L78 Accepts]: Start accepts. Automaton has 4426 states and 6011 transitions. Word has length 317 [2022-11-20 09:29:34,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:29:34,803 INFO L495 AbstractCegarLoop]: Abstraction has 4426 states and 6011 transitions. [2022-11-20 09:29:34,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 6.9411764705882355) internal successors, (118), 19 states have internal predecessors, (118), 4 states have call successors, (40), 2 states have call predecessors, (40), 5 states have return successors, (37), 4 states have call predecessors, (37), 4 states have call successors, (37) [2022-11-20 09:29:34,804 INFO L276 IsEmpty]: Start isEmpty. Operand 4426 states and 6011 transitions. [2022-11-20 09:29:34,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-11-20 09:29:34,806 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:29:34,806 INFO L195 NwaCegarLoop]: trace histogram [42, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 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, 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] [2022-11-20 09:29:34,863 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2022-11-20 09:29:35,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 09:29:35,021 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:29:35,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:29:35,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1987952974, now seen corresponding path program 2 times [2022-11-20 09:29:35,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:29:35,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1245353654] [2022-11-20 09:29:35,023 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 09:29:35,023 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 09:29:35,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:29:35,024 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 09:29:35,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-20 09:29:36,436 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 09:29:36,436 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:29:36,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 1933 conjuncts, 37 conjunts are in the unsatisfiable core [2022-11-20 09:29:36,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:29:42,290 INFO L134 CoverageAnalysis]: Checked inductivity of 1955 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1955 trivial. 0 not checked. [2022-11-20 09:29:42,291 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:29:42,291 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:29:42,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1245353654] [2022-11-20 09:29:42,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1245353654] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:29:42,291 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:29:42,292 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-11-20 09:29:42,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379203328] [2022-11-20 09:29:42,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:29:42,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-20 09:29:42,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:29:42,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-20 09:29:42,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2022-11-20 09:29:42,294 INFO L87 Difference]: Start difference. First operand 4426 states and 6011 transitions. Second operand has 17 states, 16 states have (on average 4.5) internal successors, (72), 14 states have internal predecessors, (72), 4 states have call successors, (28), 3 states have call predecessors, (28), 4 states have return successors, (24), 4 states have call predecessors, (24), 3 states have call successors, (24) [2022-11-20 09:29:44,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:29:44,950 INFO L93 Difference]: Finished difference Result 9949 states and 13722 transitions. [2022-11-20 09:29:44,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-20 09:29:44,951 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 4.5) internal successors, (72), 14 states have internal predecessors, (72), 4 states have call successors, (28), 3 states have call predecessors, (28), 4 states have return successors, (24), 4 states have call predecessors, (24), 3 states have call successors, (24) Word has length 320 [2022-11-20 09:29:44,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:29:44,997 INFO L225 Difference]: With dead ends: 9949 [2022-11-20 09:29:44,997 INFO L226 Difference]: Without dead ends: 5596 [2022-11-20 09:29:45,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 304 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=82, Invalid=470, Unknown=0, NotChecked=0, Total=552 [2022-11-20 09:29:45,016 INFO L413 NwaCegarLoop]: 1551 mSDtfsCounter, 295 mSDsluCounter, 21394 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 22945 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 114 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 09:29:45,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [350 Valid, 22945 Invalid, 182 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5 Valid, 63 Invalid, 0 Unknown, 114 Unchecked, 0.7s Time] [2022-11-20 09:29:45,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5596 states. [2022-11-20 09:29:45,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5596 to 4546. [2022-11-20 09:29:45,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4546 states, 3344 states have (on average 1.3274521531100478) internal successors, (4439), 3449 states have internal predecessors, (4439), 845 states have call successors, (845), 359 states have call predecessors, (845), 356 states have return successors, (853), 809 states have call predecessors, (853), 837 states have call successors, (853) [2022-11-20 09:29:45,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4546 states to 4546 states and 6137 transitions. [2022-11-20 09:29:45,343 INFO L78 Accepts]: Start accepts. Automaton has 4546 states and 6137 transitions. Word has length 320 [2022-11-20 09:29:45,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:29:45,343 INFO L495 AbstractCegarLoop]: Abstraction has 4546 states and 6137 transitions. [2022-11-20 09:29:45,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 4.5) internal successors, (72), 14 states have internal predecessors, (72), 4 states have call successors, (28), 3 states have call predecessors, (28), 4 states have return successors, (24), 4 states have call predecessors, (24), 3 states have call successors, (24) [2022-11-20 09:29:45,344 INFO L276 IsEmpty]: Start isEmpty. Operand 4546 states and 6137 transitions. [2022-11-20 09:29:45,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2022-11-20 09:29:45,346 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:29:45,346 INFO L195 NwaCegarLoop]: trace histogram [42, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 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, 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] [2022-11-20 09:29:45,380 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-20 09:29:45,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 09:29:45,567 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:29:45,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:29:45,568 INFO L85 PathProgramCache]: Analyzing trace with hash -1233385282, now seen corresponding path program 1 times [2022-11-20 09:29:45,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:29:45,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2071160445] [2022-11-20 09:29:45,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:45,570 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 09:29:45,570 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:29:45,572 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 09:29:45,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-20 09:29:48,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:48,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 2995 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 09:29:48,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:29:49,755 INFO L134 CoverageAnalysis]: Checked inductivity of 1955 backedges. 921 proven. 21 refuted. 0 times theorem prover too weak. 1013 trivial. 0 not checked. [2022-11-20 09:29:49,756 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:29:55,133 INFO L134 CoverageAnalysis]: Checked inductivity of 1955 backedges. 123 proven. 254 refuted. 0 times theorem prover too weak. 1578 trivial. 0 not checked. [2022-11-20 09:29:55,133 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:29:55,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2071160445] [2022-11-20 09:29:55,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2071160445] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:29:55,133 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:29:55,134 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2022-11-20 09:29:55,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454607125] [2022-11-20 09:29:55,134 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:29:55,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-20 09:29:55,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:29:55,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-20 09:29:55,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2022-11-20 09:29:55,137 INFO L87 Difference]: Start difference. First operand 4546 states and 6137 transitions. Second operand has 21 states, 19 states have (on average 6.578947368421052) internal successors, (125), 21 states have internal predecessors, (125), 4 states have call successors, (39), 2 states have call predecessors, (39), 5 states have return successors, (39), 4 states have call predecessors, (39), 4 states have call successors, (39) [2022-11-20 09:30:00,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:30:00,260 INFO L93 Difference]: Finished difference Result 9070 states and 12276 transitions. [2022-11-20 09:30:00,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-20 09:30:00,262 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 6.578947368421052) internal successors, (125), 21 states have internal predecessors, (125), 4 states have call successors, (39), 2 states have call predecessors, (39), 5 states have return successors, (39), 4 states have call predecessors, (39), 4 states have call successors, (39) Word has length 321 [2022-11-20 09:30:00,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:30:00,284 INFO L225 Difference]: With dead ends: 9070 [2022-11-20 09:30:00,284 INFO L226 Difference]: Without dead ends: 4551 [2022-11-20 09:30:00,296 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 647 GetRequests, 621 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=150, Invalid=606, Unknown=0, NotChecked=0, Total=756 [2022-11-20 09:30:00,298 INFO L413 NwaCegarLoop]: 1300 mSDtfsCounter, 35 mSDsluCounter, 18129 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 19429 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-20 09:30:00,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 19429 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 352 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-11-20 09:30:00,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4551 states. [2022-11-20 09:30:00,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4551 to 4551. [2022-11-20 09:30:00,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4551 states, 3349 states have (on average 1.3269632726186922) internal successors, (4444), 3454 states have internal predecessors, (4444), 845 states have call successors, (845), 359 states have call predecessors, (845), 356 states have return successors, (853), 809 states have call predecessors, (853), 837 states have call successors, (853) [2022-11-20 09:30:00,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4551 states to 4551 states and 6142 transitions. [2022-11-20 09:30:00,542 INFO L78 Accepts]: Start accepts. Automaton has 4551 states and 6142 transitions. Word has length 321 [2022-11-20 09:30:00,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:30:00,542 INFO L495 AbstractCegarLoop]: Abstraction has 4551 states and 6142 transitions. [2022-11-20 09:30:00,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 6.578947368421052) internal successors, (125), 21 states have internal predecessors, (125), 4 states have call successors, (39), 2 states have call predecessors, (39), 5 states have return successors, (39), 4 states have call predecessors, (39), 4 states have call successors, (39) [2022-11-20 09:30:00,543 INFO L276 IsEmpty]: Start isEmpty. Operand 4551 states and 6142 transitions. [2022-11-20 09:30:00,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2022-11-20 09:30:00,545 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:30:00,545 INFO L195 NwaCegarLoop]: trace histogram [45, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 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, 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] [2022-11-20 09:30:00,599 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-20 09:30:00,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 09:30:00,767 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:30:00,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:30:00,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1300779220, now seen corresponding path program 2 times [2022-11-20 09:30:00,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:30:00,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [787312231] [2022-11-20 09:30:00,770 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 09:30:00,770 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 09:30:00,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:30:00,772 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 09:30:00,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-20 09:30:02,133 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 09:30:02,133 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:30:02,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 1900 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 09:30:02,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:30:07,688 INFO L134 CoverageAnalysis]: Checked inductivity of 2111 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2111 trivial. 0 not checked. [2022-11-20 09:30:07,688 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:30:07,688 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:30:07,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [787312231] [2022-11-20 09:30:07,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [787312231] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:30:07,689 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:30:07,689 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 09:30:07,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349714170] [2022-11-20 09:30:07,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:30:07,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:30:07,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:30:07,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:30:07,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:30:07,692 INFO L87 Difference]: Start difference. First operand 4551 states and 6142 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 2 states have internal predecessors, (74), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2022-11-20 09:30:07,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:30:07,977 INFO L93 Difference]: Finished difference Result 4553 states and 6143 transitions. [2022-11-20 09:30:07,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:30:07,978 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 2 states have internal predecessors, (74), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) Word has length 324 [2022-11-20 09:30:07,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:30:07,995 INFO L225 Difference]: With dead ends: 4553 [2022-11-20 09:30:07,996 INFO L226 Difference]: Without dead ends: 4550 [2022-11-20 09:30:07,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 322 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:30:07,999 INFO L413 NwaCegarLoop]: 1309 mSDtfsCounter, 1188 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1188 SdHoareTripleChecker+Valid, 1309 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 09:30:07,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1188 Valid, 1309 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 09:30:08,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4550 states. [2022-11-20 09:30:08,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4550 to 4550. [2022-11-20 09:30:08,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4550 states, 3349 states have (on average 1.3266646760226934) internal successors, (4443), 3453 states have internal predecessors, (4443), 844 states have call successors, (844), 359 states have call predecessors, (844), 356 states have return successors, (853), 809 states have call predecessors, (853), 837 states have call successors, (853) [2022-11-20 09:30:08,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4550 states to 4550 states and 6140 transitions. [2022-11-20 09:30:08,354 INFO L78 Accepts]: Start accepts. Automaton has 4550 states and 6140 transitions. Word has length 324 [2022-11-20 09:30:08,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:30:08,355 INFO L495 AbstractCegarLoop]: Abstraction has 4550 states and 6140 transitions. [2022-11-20 09:30:08,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 2 states have internal predecessors, (74), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2022-11-20 09:30:08,355 INFO L276 IsEmpty]: Start isEmpty. Operand 4550 states and 6140 transitions. [2022-11-20 09:30:08,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2022-11-20 09:30:08,357 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:30:08,358 INFO L195 NwaCegarLoop]: trace histogram [45, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 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, 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] [2022-11-20 09:30:08,391 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-20 09:30:08,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 09:30:08,579 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:30:08,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:30:08,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1669197606, now seen corresponding path program 1 times [2022-11-20 09:30:08,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:30:08,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1737590626] [2022-11-20 09:30:08,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:30:08,582 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 09:30:08,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:30:08,584 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 09:30:08,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-20 09:30:11,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:11,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 3029 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-20 09:30:11,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:30:12,862 INFO L134 CoverageAnalysis]: Checked inductivity of 2111 backedges. 1011 proven. 28 refuted. 0 times theorem prover too weak. 1072 trivial. 0 not checked. [2022-11-20 09:30:12,862 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:30:18,990 INFO L134 CoverageAnalysis]: Checked inductivity of 2111 backedges. 138 proven. 306 refuted. 0 times theorem prover too weak. 1667 trivial. 0 not checked. [2022-11-20 09:30:18,991 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:30:18,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1737590626] [2022-11-20 09:30:18,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1737590626] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:30:18,991 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:30:18,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2022-11-20 09:30:18,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619021936] [2022-11-20 09:30:18,992 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:30:18,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-20 09:30:18,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:30:18,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-20 09:30:18,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=415, Unknown=0, NotChecked=0, Total=506 [2022-11-20 09:30:18,994 INFO L87 Difference]: Start difference. First operand 4550 states and 6140 transitions. Second operand has 23 states, 21 states have (on average 6.095238095238095) internal successors, (128), 23 states have internal predecessors, (128), 4 states have call successors, (39), 2 states have call predecessors, (39), 5 states have return successors, (39), 4 states have call predecessors, (39), 4 states have call successors, (39) [2022-11-20 09:30:24,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:30:24,367 INFO L93 Difference]: Finished difference Result 9078 states and 12282 transitions. [2022-11-20 09:30:24,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-20 09:30:24,368 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 6.095238095238095) internal successors, (128), 23 states have internal predecessors, (128), 4 states have call successors, (39), 2 states have call predecessors, (39), 5 states have return successors, (39), 4 states have call predecessors, (39), 4 states have call successors, (39) Word has length 325 [2022-11-20 09:30:24,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:30:24,384 INFO L225 Difference]: With dead ends: 9078 [2022-11-20 09:30:24,385 INFO L226 Difference]: Without dead ends: 4555 [2022-11-20 09:30:24,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 655 GetRequests, 627 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=169, Invalid=701, Unknown=0, NotChecked=0, Total=870 [2022-11-20 09:30:24,398 INFO L413 NwaCegarLoop]: 1298 mSDtfsCounter, 40 mSDsluCounter, 16825 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 18123 SdHoareTripleChecker+Invalid, 378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-20 09:30:24,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 18123 Invalid, 378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-11-20 09:30:24,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4555 states. [2022-11-20 09:30:24,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4555 to 4555. [2022-11-20 09:30:24,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4555 states, 3354 states have (on average 1.3261776982707216) internal successors, (4448), 3458 states have internal predecessors, (4448), 844 states have call successors, (844), 359 states have call predecessors, (844), 356 states have return successors, (853), 809 states have call predecessors, (853), 837 states have call successors, (853) [2022-11-20 09:30:24,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4555 states to 4555 states and 6145 transitions. [2022-11-20 09:30:24,728 INFO L78 Accepts]: Start accepts. Automaton has 4555 states and 6145 transitions. Word has length 325 [2022-11-20 09:30:24,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:30:24,728 INFO L495 AbstractCegarLoop]: Abstraction has 4555 states and 6145 transitions. [2022-11-20 09:30:24,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 6.095238095238095) internal successors, (128), 23 states have internal predecessors, (128), 4 states have call successors, (39), 2 states have call predecessors, (39), 5 states have return successors, (39), 4 states have call predecessors, (39), 4 states have call successors, (39) [2022-11-20 09:30:24,729 INFO L276 IsEmpty]: Start isEmpty. Operand 4555 states and 6145 transitions. [2022-11-20 09:30:24,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2022-11-20 09:30:24,731 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:30:24,731 INFO L195 NwaCegarLoop]: trace histogram [48, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 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, 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] [2022-11-20 09:30:24,788 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-20 09:30:24,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 09:30:24,955 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:30:24,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:30:24,956 INFO L85 PathProgramCache]: Analyzing trace with hash -675155652, now seen corresponding path program 2 times [2022-11-20 09:30:24,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:30:24,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2040410435] [2022-11-20 09:30:24,958 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 09:30:24,958 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 09:30:24,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:30:24,960 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 09:30:25,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-20 09:30:26,616 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 09:30:26,617 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:30:26,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 1901 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 09:30:26,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:30:32,198 INFO L134 CoverageAnalysis]: Checked inductivity of 2276 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2276 trivial. 0 not checked. [2022-11-20 09:30:32,198 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:30:32,198 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:30:32,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2040410435] [2022-11-20 09:30:32,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2040410435] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:30:32,198 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:30:32,199 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 09:30:32,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627798134] [2022-11-20 09:30:32,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:30:32,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:30:32,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:30:32,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:30:32,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:30:32,200 INFO L87 Difference]: Start difference. First operand 4555 states and 6145 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2022-11-20 09:30:32,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:30:32,467 INFO L93 Difference]: Finished difference Result 4557 states and 6146 transitions. [2022-11-20 09:30:32,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:30:32,468 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) Word has length 328 [2022-11-20 09:30:32,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:30:32,483 INFO L225 Difference]: With dead ends: 4557 [2022-11-20 09:30:32,484 INFO L226 Difference]: Without dead ends: 4554 [2022-11-20 09:30:32,486 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:30:32,486 INFO L413 NwaCegarLoop]: 1307 mSDtfsCounter, 1185 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1185 SdHoareTripleChecker+Valid, 1307 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 09:30:32,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1185 Valid, 1307 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 09:30:32,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4554 states. [2022-11-20 09:30:32,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4554 to 4554. [2022-11-20 09:30:32,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4554 states, 3354 states have (on average 1.3258795468097793) internal successors, (4447), 3457 states have internal predecessors, (4447), 843 states have call successors, (843), 359 states have call predecessors, (843), 356 states have return successors, (853), 809 states have call predecessors, (853), 837 states have call successors, (853) [2022-11-20 09:30:32,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4554 states to 4554 states and 6143 transitions. [2022-11-20 09:30:32,905 INFO L78 Accepts]: Start accepts. Automaton has 4554 states and 6143 transitions. Word has length 328 [2022-11-20 09:30:32,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:30:32,906 INFO L495 AbstractCegarLoop]: Abstraction has 4554 states and 6143 transitions. [2022-11-20 09:30:32,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2022-11-20 09:30:32,907 INFO L276 IsEmpty]: Start isEmpty. Operand 4554 states and 6143 transitions. [2022-11-20 09:30:32,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2022-11-20 09:30:32,909 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:30:32,909 INFO L195 NwaCegarLoop]: trace histogram [48, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 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, 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] [2022-11-20 09:30:32,949 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-20 09:30:33,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 09:30:33,131 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:30:33,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:30:33,132 INFO L85 PathProgramCache]: Analyzing trace with hash 544763585, now seen corresponding path program 1 times [2022-11-20 09:30:33,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:30:33,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [431743622] [2022-11-20 09:30:33,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:30:33,133 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 09:30:33,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:30:33,134 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 09:30:33,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-20 09:30:37,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:37,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 3063 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 09:30:37,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:30:42,621 INFO L134 CoverageAnalysis]: Checked inductivity of 2276 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2276 trivial. 0 not checked. [2022-11-20 09:30:42,621 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:30:42,621 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:30:42,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [431743622] [2022-11-20 09:30:42,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [431743622] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:30:42,622 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:30:42,622 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 09:30:42,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965507695] [2022-11-20 09:30:42,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:30:42,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:30:42,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:30:42,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:30:42,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:30:42,624 INFO L87 Difference]: Start difference. First operand 4554 states and 6143 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2022-11-20 09:30:42,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:30:42,852 INFO L93 Difference]: Finished difference Result 4556 states and 6144 transitions. [2022-11-20 09:30:42,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:30:42,853 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) Word has length 329 [2022-11-20 09:30:42,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:30:42,869 INFO L225 Difference]: With dead ends: 4556 [2022-11-20 09:30:42,869 INFO L226 Difference]: Without dead ends: 4553 [2022-11-20 09:30:42,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 327 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:30:42,872 INFO L413 NwaCegarLoop]: 1305 mSDtfsCounter, 1182 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1182 SdHoareTripleChecker+Valid, 1305 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 09:30:42,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1182 Valid, 1305 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 09:30:42,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4553 states. [2022-11-20 09:30:43,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4553 to 4553. [2022-11-20 09:30:43,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4553 states, 3354 states have (on average 1.3255813953488371) internal successors, (4446), 3456 states have internal predecessors, (4446), 842 states have call successors, (842), 359 states have call predecessors, (842), 356 states have return successors, (853), 809 states have call predecessors, (853), 837 states have call successors, (853) [2022-11-20 09:30:43,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4553 states to 4553 states and 6141 transitions. [2022-11-20 09:30:43,307 INFO L78 Accepts]: Start accepts. Automaton has 4553 states and 6141 transitions. Word has length 329 [2022-11-20 09:30:43,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:30:43,308 INFO L495 AbstractCegarLoop]: Abstraction has 4553 states and 6141 transitions. [2022-11-20 09:30:43,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2022-11-20 09:30:43,308 INFO L276 IsEmpty]: Start isEmpty. Operand 4553 states and 6141 transitions. [2022-11-20 09:30:43,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2022-11-20 09:30:43,310 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:30:43,311 INFO L195 NwaCegarLoop]: trace histogram [48, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 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, 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, 1] [2022-11-20 09:30:43,365 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-20 09:30:43,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 09:30:43,528 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:30:43,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:30:43,529 INFO L85 PathProgramCache]: Analyzing trace with hash -292440865, now seen corresponding path program 1 times [2022-11-20 09:30:43,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:30:43,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [711812022] [2022-11-20 09:30:43,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:30:43,532 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 09:30:43,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:30:43,535 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 09:30:43,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-20 09:30:48,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:48,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 3064 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 09:30:48,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:30:53,632 INFO L134 CoverageAnalysis]: Checked inductivity of 2276 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2276 trivial. 0 not checked. [2022-11-20 09:30:53,633 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:30:53,633 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:30:53,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [711812022] [2022-11-20 09:30:53,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [711812022] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:30:53,633 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:30:53,633 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 09:30:53,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928271279] [2022-11-20 09:30:53,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:30:53,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 09:30:53,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:30:53,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 09:30:53,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 09:30:53,635 INFO L87 Difference]: Start difference. First operand 4553 states and 6141 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 3 states have call successors, (26), 4 states have call predecessors, (26), 3 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-20 09:30:55,765 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 09:30:59,607 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 09:31:05,389 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 09:31:10,989 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 09:31:13,954 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 09:31:16,778 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 09:31:26,363 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 09:31:30,425 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 09:31:33,511 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 09:31:41,734 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 09:31:42,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:31:42,108 INFO L93 Difference]: Finished difference Result 12973 states and 17727 transitions. [2022-11-20 09:31:42,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 09:31:42,109 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 3 states have call successors, (26), 4 states have call predecessors, (26), 3 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 330 [2022-11-20 09:31:42,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:31:42,147 INFO L225 Difference]: With dead ends: 12973 [2022-11-20 09:31:42,147 INFO L226 Difference]: Without dead ends: 8457 [2022-11-20 09:31:42,166 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 328 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 09:31:42,167 INFO L413 NwaCegarLoop]: 744 mSDtfsCounter, 1942 mSDsluCounter, 898 mSDsCounter, 0 mSdLazyCounter, 1815 mSolverCounterSat, 509 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 46.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2078 SdHoareTripleChecker+Valid, 1642 SdHoareTripleChecker+Invalid, 2333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 509 IncrementalHoareTripleChecker+Valid, 1815 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 47.6s IncrementalHoareTripleChecker+Time [2022-11-20 09:31:42,167 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2078 Valid, 1642 Invalid, 2333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [509 Valid, 1815 Invalid, 9 Unknown, 0 Unchecked, 47.6s Time] [2022-11-20 09:31:42,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8457 states. [2022-11-20 09:31:43,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8457 to 8201. [2022-11-20 09:31:43,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8201 states, 6102 states have (on average 1.3343166175024581) internal successors, (8142), 6308 states have internal predecessors, (8142), 1474 states have call successors, (1474), 649 states have call predecessors, (1474), 624 states have return successors, (1581), 1354 states have call predecessors, (1581), 1451 states have call successors, (1581) [2022-11-20 09:31:43,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8201 states to 8201 states and 11197 transitions. [2022-11-20 09:31:43,150 INFO L78 Accepts]: Start accepts. Automaton has 8201 states and 11197 transitions. Word has length 330 [2022-11-20 09:31:43,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:31:43,150 INFO L495 AbstractCegarLoop]: Abstraction has 8201 states and 11197 transitions. [2022-11-20 09:31:43,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 3 states have call successors, (26), 4 states have call predecessors, (26), 3 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-20 09:31:43,151 INFO L276 IsEmpty]: Start isEmpty. Operand 8201 states and 11197 transitions. [2022-11-20 09:31:43,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2022-11-20 09:31:43,155 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:31:43,155 INFO L195 NwaCegarLoop]: trace histogram [48, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 2, 2, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:31:43,220 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-20 09:31:43,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 09:31:43,380 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:31:43,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:31:43,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1084323088, now seen corresponding path program 1 times [2022-11-20 09:31:43,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:31:43,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [580591455] [2022-11-20 09:31:43,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:31:43,383 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 09:31:43,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:31:43,384 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 09:31:43,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-20 09:31:47,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:47,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 3196 conjuncts, 53 conjunts are in the unsatisfiable core [2022-11-20 09:31:47,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:31:58,189 INFO L134 CoverageAnalysis]: Checked inductivity of 2392 backedges. 114 proven. 0 refuted. 0 times theorem prover too weak. 2278 trivial. 0 not checked. [2022-11-20 09:31:58,189 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:31:58,189 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:31:58,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [580591455] [2022-11-20 09:31:58,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [580591455] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:31:58,190 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:31:58,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-20 09:31:58,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273258484] [2022-11-20 09:31:58,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:31:58,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-20 09:31:58,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:31:58,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-20 09:31:58,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=413, Unknown=0, NotChecked=0, Total=462 [2022-11-20 09:31:58,192 INFO L87 Difference]: Start difference. First operand 8201 states and 11197 transitions. Second operand has 22 states, 21 states have (on average 4.809523809523809) internal successors, (101), 18 states have internal predecessors, (101), 4 states have call successors, (34), 3 states have call predecessors, (34), 6 states have return successors, (30), 6 states have call predecessors, (30), 4 states have call successors, (30) [2022-11-20 09:32:01,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:32:01,106 INFO L93 Difference]: Finished difference Result 16461 states and 22447 transitions. [2022-11-20 09:32:01,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-20 09:32:01,106 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 4.809523809523809) internal successors, (101), 18 states have internal predecessors, (101), 4 states have call successors, (34), 3 states have call predecessors, (34), 6 states have return successors, (30), 6 states have call predecessors, (30), 4 states have call successors, (30) Word has length 368 [2022-11-20 09:32:01,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:32:01,139 INFO L225 Difference]: With dead ends: 16461 [2022-11-20 09:32:01,139 INFO L226 Difference]: Without dead ends: 8341 [2022-11-20 09:32:01,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 347 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=96, Invalid=716, Unknown=0, NotChecked=0, Total=812 [2022-11-20 09:32:01,158 INFO L413 NwaCegarLoop]: 1291 mSDtfsCounter, 19 mSDsluCounter, 16759 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 18050 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 127 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 09:32:01,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 18050 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 36 Invalid, 0 Unknown, 127 Unchecked, 0.5s Time] [2022-11-20 09:32:01,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8341 states. [2022-11-20 09:32:02,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8341 to 8265. [2022-11-20 09:32:02,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8265 states, 6150 states have (on average 1.3317073170731708) internal successors, (8190), 6356 states have internal predecessors, (8190), 1482 states have call successors, (1482), 657 states have call predecessors, (1482), 632 states have return successors, (1589), 1362 states have call predecessors, (1589), 1459 states have call successors, (1589) [2022-11-20 09:32:02,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8265 states to 8265 states and 11261 transitions. [2022-11-20 09:32:02,033 INFO L78 Accepts]: Start accepts. Automaton has 8265 states and 11261 transitions. Word has length 368 [2022-11-20 09:32:02,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:32:02,033 INFO L495 AbstractCegarLoop]: Abstraction has 8265 states and 11261 transitions. [2022-11-20 09:32:02,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 4.809523809523809) internal successors, (101), 18 states have internal predecessors, (101), 4 states have call successors, (34), 3 states have call predecessors, (34), 6 states have return successors, (30), 6 states have call predecessors, (30), 4 states have call successors, (30) [2022-11-20 09:32:02,034 INFO L276 IsEmpty]: Start isEmpty. Operand 8265 states and 11261 transitions. [2022-11-20 09:32:02,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2022-11-20 09:32:02,036 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:32:02,036 INFO L195 NwaCegarLoop]: trace histogram [48, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 2, 2, 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, 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, 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, 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, 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] [2022-11-20 09:32:02,071 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-20 09:32:02,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 09:32:02,237 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:32:02,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:32:02,238 INFO L85 PathProgramCache]: Analyzing trace with hash 1956433509, now seen corresponding path program 1 times [2022-11-20 09:32:02,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:32:02,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [720640959] [2022-11-20 09:32:02,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:02,240 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 09:32:02,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:32:02,247 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 09:32:02,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-20 09:32:07,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:07,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 3428 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-20 09:32:07,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:32:08,360 INFO L134 CoverageAnalysis]: Checked inductivity of 2279 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2279 trivial. 0 not checked. [2022-11-20 09:32:08,360 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:32:08,361 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:32:08,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [720640959] [2022-11-20 09:32:08,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [720640959] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:32:08,361 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:32:08,361 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 09:32:08,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731992077] [2022-11-20 09:32:08,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:32:08,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 09:32:08,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:32:08,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 09:32:08,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-20 09:32:08,363 INFO L87 Difference]: Start difference. First operand 8265 states and 11261 transitions. Second operand has 9 states, 9 states have (on average 13.0) internal successors, (117), 7 states have internal predecessors, (117), 2 states have call successors, (38), 2 states have call predecessors, (38), 4 states have return successors, (34), 4 states have call predecessors, (34), 2 states have call successors, (34) [2022-11-20 09:32:10,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:32:10,114 INFO L93 Difference]: Finished difference Result 16683 states and 22753 transitions. [2022-11-20 09:32:10,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 09:32:10,115 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.0) internal successors, (117), 7 states have internal predecessors, (117), 2 states have call successors, (38), 2 states have call predecessors, (38), 4 states have return successors, (34), 4 states have call predecessors, (34), 2 states have call successors, (34) Word has length 393 [2022-11-20 09:32:10,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:32:10,149 INFO L225 Difference]: With dead ends: 16683 [2022-11-20 09:32:10,150 INFO L226 Difference]: Without dead ends: 8491 [2022-11-20 09:32:10,170 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 385 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-11-20 09:32:10,171 INFO L413 NwaCegarLoop]: 1306 mSDtfsCounter, 10 mSDsluCounter, 9105 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 10411 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-20 09:32:10,171 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 10411 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-20 09:32:10,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8491 states. [2022-11-20 09:32:11,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8491 to 8381. [2022-11-20 09:32:11,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8381 states, 6242 states have (on average 1.3268183274591476) internal successors, (8282), 6444 states have internal predecessors, (8282), 1482 states have call successors, (1482), 657 states have call predecessors, (1482), 656 states have return successors, (1635), 1390 states have call predecessors, (1635), 1459 states have call successors, (1635) [2022-11-20 09:32:11,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8381 states to 8381 states and 11399 transitions. [2022-11-20 09:32:11,058 INFO L78 Accepts]: Start accepts. Automaton has 8381 states and 11399 transitions. Word has length 393 [2022-11-20 09:32:11,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:32:11,059 INFO L495 AbstractCegarLoop]: Abstraction has 8381 states and 11399 transitions. [2022-11-20 09:32:11,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.0) internal successors, (117), 7 states have internal predecessors, (117), 2 states have call successors, (38), 2 states have call predecessors, (38), 4 states have return successors, (34), 4 states have call predecessors, (34), 2 states have call successors, (34) [2022-11-20 09:32:11,059 INFO L276 IsEmpty]: Start isEmpty. Operand 8381 states and 11399 transitions. [2022-11-20 09:32:11,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2022-11-20 09:32:11,063 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:32:11,063 INFO L195 NwaCegarLoop]: trace histogram [48, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 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, 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] [2022-11-20 09:32:11,103 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-20 09:32:11,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 09:32:11,267 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:32:11,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:32:11,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1450529145, now seen corresponding path program 1 times [2022-11-20 09:32:11,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:32:11,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [157336530] [2022-11-20 09:32:11,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:11,269 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 09:32:11,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:32:11,270 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 09:32:11,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-20 09:32:16,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:16,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 3471 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 09:32:16,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:32:17,915 INFO L134 CoverageAnalysis]: Checked inductivity of 2355 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2347 trivial. 0 not checked. [2022-11-20 09:32:17,915 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:32:17,915 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:32:17,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [157336530] [2022-11-20 09:32:17,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [157336530] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:32:17,916 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:32:17,916 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 09:32:17,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901481632] [2022-11-20 09:32:17,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:32:17,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 09:32:17,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:32:17,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 09:32:17,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 09:32:17,918 INFO L87 Difference]: Start difference. First operand 8381 states and 11399 transitions. Second operand has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 4 states have call successors, (42), 2 states have call predecessors, (42), 3 states have return successors, (38), 4 states have call predecessors, (38), 4 states have call successors, (38) [2022-11-20 09:32:19,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:32:19,226 INFO L93 Difference]: Finished difference Result 17033 states and 23209 transitions. [2022-11-20 09:32:19,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 09:32:19,228 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 4 states have call successors, (42), 2 states have call predecessors, (42), 3 states have return successors, (38), 4 states have call predecessors, (38), 4 states have call successors, (38) Word has length 413 [2022-11-20 09:32:19,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:32:19,259 INFO L225 Difference]: With dead ends: 17033 [2022-11-20 09:32:19,259 INFO L226 Difference]: Without dead ends: 8647 [2022-11-20 09:32:19,280 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 413 GetRequests, 410 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 09:32:19,280 INFO L413 NwaCegarLoop]: 1309 mSDtfsCounter, 70 mSDsluCounter, 2512 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 3821 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 09:32:19,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 3821 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 09:32:19,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8647 states. [2022-11-20 09:32:20,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8647 to 8409. [2022-11-20 09:32:20,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8409 states, 6266 states have (on average 1.3258857325247366) internal successors, (8308), 6470 states have internal predecessors, (8308), 1486 states have call successors, (1486), 657 states have call predecessors, (1486), 656 states have return successors, (1637), 1392 states have call predecessors, (1637), 1461 states have call successors, (1637) [2022-11-20 09:32:20,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8409 states to 8409 states and 11431 transitions. [2022-11-20 09:32:20,068 INFO L78 Accepts]: Start accepts. Automaton has 8409 states and 11431 transitions. Word has length 413 [2022-11-20 09:32:20,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:32:20,069 INFO L495 AbstractCegarLoop]: Abstraction has 8409 states and 11431 transitions. [2022-11-20 09:32:20,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 4 states have call successors, (42), 2 states have call predecessors, (42), 3 states have return successors, (38), 4 states have call predecessors, (38), 4 states have call successors, (38) [2022-11-20 09:32:20,069 INFO L276 IsEmpty]: Start isEmpty. Operand 8409 states and 11431 transitions. [2022-11-20 09:32:20,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2022-11-20 09:32:20,075 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:32:20,076 INFO L195 NwaCegarLoop]: trace histogram [48, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 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, 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] [2022-11-20 09:32:20,119 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-11-20 09:32:20,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 09:32:20,283 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:32:20,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:32:20,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1968419145, now seen corresponding path program 1 times [2022-11-20 09:32:20,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:32:20,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [117157388] [2022-11-20 09:32:20,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:20,286 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 09:32:20,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:32:20,288 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 09:32:20,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-11-20 09:32:25,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:25,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 3462 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 09:32:25,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:32:26,146 INFO L134 CoverageAnalysis]: Checked inductivity of 2355 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2347 trivial. 0 not checked. [2022-11-20 09:32:26,146 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:32:26,146 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:32:26,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [117157388] [2022-11-20 09:32:26,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [117157388] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:32:26,146 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:32:26,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 09:32:26,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283648422] [2022-11-20 09:32:26,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:32:26,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 09:32:26,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:32:26,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 09:32:26,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 09:32:26,149 INFO L87 Difference]: Start difference. First operand 8409 states and 11431 transitions. Second operand has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 4 states have call successors, (42), 2 states have call predecessors, (42), 3 states have return successors, (38), 4 states have call predecessors, (38), 4 states have call successors, (38) [2022-11-20 09:32:27,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:32:27,396 INFO L93 Difference]: Finished difference Result 17190 states and 23424 transitions. [2022-11-20 09:32:27,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 09:32:27,397 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 4 states have call successors, (42), 2 states have call predecessors, (42), 3 states have return successors, (38), 4 states have call predecessors, (38), 4 states have call successors, (38) Word has length 413 [2022-11-20 09:32:27,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:32:27,432 INFO L225 Difference]: With dead ends: 17190 [2022-11-20 09:32:27,432 INFO L226 Difference]: Without dead ends: 8691 [2022-11-20 09:32:27,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 413 GetRequests, 410 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 09:32:27,458 INFO L413 NwaCegarLoop]: 1348 mSDtfsCounter, 91 mSDsluCounter, 2518 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 3866 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 09:32:27,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 3866 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 09:32:27,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8691 states. [2022-11-20 09:32:28,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8691 to 8459. [2022-11-20 09:32:28,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8459 states, 6311 states have (on average 1.3191253367136746) internal successors, (8325), 6512 states have internal predecessors, (8325), 1499 states have call successors, (1499), 648 states have call predecessors, (1499), 648 states have return successors, (1648), 1399 states have call predecessors, (1648), 1474 states have call successors, (1648) [2022-11-20 09:32:28,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8459 states to 8459 states and 11472 transitions. [2022-11-20 09:32:28,321 INFO L78 Accepts]: Start accepts. Automaton has 8459 states and 11472 transitions. Word has length 413 [2022-11-20 09:32:28,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:32:28,322 INFO L495 AbstractCegarLoop]: Abstraction has 8459 states and 11472 transitions. [2022-11-20 09:32:28,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 4 states have call successors, (42), 2 states have call predecessors, (42), 3 states have return successors, (38), 4 states have call predecessors, (38), 4 states have call successors, (38) [2022-11-20 09:32:28,323 INFO L276 IsEmpty]: Start isEmpty. Operand 8459 states and 11472 transitions. [2022-11-20 09:32:28,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2022-11-20 09:32:28,326 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:32:28,327 INFO L195 NwaCegarLoop]: trace histogram [48, 12, 12, 12, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 2, 2, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:32:28,388 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-11-20 09:32:28,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 09:32:28,543 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:32:28,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:32:28,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1344052497, now seen corresponding path program 1 times [2022-11-20 09:32:28,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:32:28,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [119936063] [2022-11-20 09:32:28,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:28,547 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 09:32:28,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:32:28,548 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 09:32:28,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-20 09:32:33,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:33,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 3537 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 09:32:33,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:32:33,634 INFO L134 CoverageAnalysis]: Checked inductivity of 2601 backedges. 288 proven. 0 refuted. 0 times theorem prover too weak. 2313 trivial. 0 not checked. [2022-11-20 09:32:33,635 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:32:33,635 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:32:33,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [119936063] [2022-11-20 09:32:33,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [119936063] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:32:33,636 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:32:33,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 09:32:33,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63968177] [2022-11-20 09:32:33,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:32:33,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 09:32:33,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:32:33,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 09:32:33,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 09:32:33,638 INFO L87 Difference]: Start difference. First operand 8459 states and 11472 transitions. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 2 states have call successors, (42), 3 states have call predecessors, (42), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2022-11-20 09:32:34,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:32:34,730 INFO L93 Difference]: Finished difference Result 9305 states and 12357 transitions. [2022-11-20 09:32:34,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 09:32:34,731 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 2 states have call successors, (42), 3 states have call predecessors, (42), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) Word has length 424 [2022-11-20 09:32:34,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:32:34,764 INFO L225 Difference]: With dead ends: 9305 [2022-11-20 09:32:34,764 INFO L226 Difference]: Without dead ends: 8229 [2022-11-20 09:32:34,771 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 424 GetRequests, 421 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 09:32:34,772 INFO L413 NwaCegarLoop]: 1311 mSDtfsCounter, 107 mSDsluCounter, 2585 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 3896 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 09:32:34,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 3896 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 09:32:34,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8229 states. [2022-11-20 09:32:35,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8229 to 8229. [2022-11-20 09:32:35,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8229 states, 6137 states have (on average 1.3216555320189018) internal successors, (8111), 6336 states have internal predecessors, (8111), 1443 states have call successors, (1443), 648 states have call predecessors, (1443), 648 states have return successors, (1592), 1345 states have call predecessors, (1592), 1418 states have call successors, (1592) [2022-11-20 09:32:35,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8229 states to 8229 states and 11146 transitions. [2022-11-20 09:32:35,603 INFO L78 Accepts]: Start accepts. Automaton has 8229 states and 11146 transitions. Word has length 424 [2022-11-20 09:32:35,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:32:35,604 INFO L495 AbstractCegarLoop]: Abstraction has 8229 states and 11146 transitions. [2022-11-20 09:32:35,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 2 states have call successors, (42), 3 states have call predecessors, (42), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2022-11-20 09:32:35,604 INFO L276 IsEmpty]: Start isEmpty. Operand 8229 states and 11146 transitions. [2022-11-20 09:32:35,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2022-11-20 09:32:35,606 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:32:35,606 INFO L195 NwaCegarLoop]: trace histogram [48, 12, 12, 12, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 2, 2, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:32:35,645 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-11-20 09:32:35,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 09:32:35,807 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:32:35,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:32:35,807 INFO L85 PathProgramCache]: Analyzing trace with hash -1193381147, now seen corresponding path program 1 times [2022-11-20 09:32:35,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:32:35,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1699067539] [2022-11-20 09:32:35,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:35,810 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 09:32:35,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:32:35,810 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 09:32:35,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-11-20 09:32:40,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:40,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 3537 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 09:32:40,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:32:42,016 INFO L134 CoverageAnalysis]: Checked inductivity of 2601 backedges. 240 proven. 0 refuted. 0 times theorem prover too weak. 2361 trivial. 0 not checked. [2022-11-20 09:32:42,016 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:32:42,016 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:32:42,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1699067539] [2022-11-20 09:32:42,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1699067539] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:32:42,017 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:32:42,017 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 09:32:42,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701951325] [2022-11-20 09:32:42,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:32:42,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 09:32:42,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:32:42,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 09:32:42,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 09:32:42,019 INFO L87 Difference]: Start difference. First operand 8229 states and 11146 transitions. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 3 states have call successors, (42), 3 states have call predecessors, (42), 2 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) [2022-11-20 09:32:42,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:32:42,943 INFO L93 Difference]: Finished difference Result 8491 states and 11419 transitions. [2022-11-20 09:32:42,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 09:32:42,944 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 3 states have call successors, (42), 3 states have call predecessors, (42), 2 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) Word has length 424 [2022-11-20 09:32:42,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:32:42,969 INFO L225 Difference]: With dead ends: 8491 [2022-11-20 09:32:42,969 INFO L226 Difference]: Without dead ends: 8217 [2022-11-20 09:32:42,973 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 424 GetRequests, 421 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 09:32:42,973 INFO L413 NwaCegarLoop]: 1310 mSDtfsCounter, 85 mSDsluCounter, 2583 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 3893 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 09:32:42,974 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 3893 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 09:32:42,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8217 states. [2022-11-20 09:32:43,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8217 to 8217. [2022-11-20 09:32:43,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8217 states, 6125 states have (on average 1.320326530612245) internal successors, (8087), 6324 states have internal predecessors, (8087), 1443 states have call successors, (1443), 648 states have call predecessors, (1443), 648 states have return successors, (1592), 1345 states have call predecessors, (1592), 1418 states have call successors, (1592) [2022-11-20 09:32:43,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8217 states to 8217 states and 11122 transitions. [2022-11-20 09:32:43,802 INFO L78 Accepts]: Start accepts. Automaton has 8217 states and 11122 transitions. Word has length 424 [2022-11-20 09:32:43,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:32:43,802 INFO L495 AbstractCegarLoop]: Abstraction has 8217 states and 11122 transitions. [2022-11-20 09:32:43,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 3 states have call successors, (42), 3 states have call predecessors, (42), 2 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) [2022-11-20 09:32:43,803 INFO L276 IsEmpty]: Start isEmpty. Operand 8217 states and 11122 transitions. [2022-11-20 09:32:43,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2022-11-20 09:32:43,806 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:32:43,806 INFO L195 NwaCegarLoop]: trace histogram [48, 12, 12, 12, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 2, 2, 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, 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, 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, 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, 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] [2022-11-20 09:32:43,866 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-11-20 09:32:44,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 09:32:44,022 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:32:44,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:32:44,022 INFO L85 PathProgramCache]: Analyzing trace with hash 2003308971, now seen corresponding path program 1 times [2022-11-20 09:32:44,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:32:44,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [119036338] [2022-11-20 09:32:44,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:44,024 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 09:32:44,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:32:44,025 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 09:32:44,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-11-20 09:32:48,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:49,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 3534 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 09:32:49,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:32:49,681 INFO L134 CoverageAnalysis]: Checked inductivity of 2601 backedges. 240 proven. 0 refuted. 0 times theorem prover too weak. 2361 trivial. 0 not checked. [2022-11-20 09:32:49,682 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:32:49,682 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:32:49,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [119036338] [2022-11-20 09:32:49,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [119036338] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:32:49,683 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:32:49,683 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 09:32:49,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577622496] [2022-11-20 09:32:49,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:32:49,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 09:32:49,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:32:49,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 09:32:49,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 09:32:49,685 INFO L87 Difference]: Start difference. First operand 8217 states and 11122 transitions. Second operand has 4 states, 4 states have (on average 30.75) internal successors, (123), 3 states have internal predecessors, (123), 3 states have call successors, (42), 3 states have call predecessors, (42), 2 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) [2022-11-20 09:32:50,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:32:50,614 INFO L93 Difference]: Finished difference Result 8623 states and 11547 transitions. [2022-11-20 09:32:50,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 09:32:50,614 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 3 states have internal predecessors, (123), 3 states have call successors, (42), 3 states have call predecessors, (42), 2 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) Word has length 426 [2022-11-20 09:32:50,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:32:50,637 INFO L225 Difference]: With dead ends: 8623 [2022-11-20 09:32:50,637 INFO L226 Difference]: Without dead ends: 8093 [2022-11-20 09:32:50,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 423 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 09:32:50,642 INFO L413 NwaCegarLoop]: 1308 mSDtfsCounter, 68 mSDsluCounter, 2582 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 3890 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 09:32:50,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 3890 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 09:32:50,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8093 states. [2022-11-20 09:32:51,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8093 to 8093. [2022-11-20 09:32:51,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8093 states, 6017 states have (on average 1.3207578527505401) internal successors, (7947), 6208 states have internal predecessors, (7947), 1427 states have call successors, (1427), 648 states have call predecessors, (1427), 648 states have return successors, (1580), 1337 states have call predecessors, (1580), 1406 states have call successors, (1580) [2022-11-20 09:32:51,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8093 states to 8093 states and 10954 transitions. [2022-11-20 09:32:51,441 INFO L78 Accepts]: Start accepts. Automaton has 8093 states and 10954 transitions. Word has length 426 [2022-11-20 09:32:51,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:32:51,441 INFO L495 AbstractCegarLoop]: Abstraction has 8093 states and 10954 transitions. [2022-11-20 09:32:51,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 3 states have internal predecessors, (123), 3 states have call successors, (42), 3 states have call predecessors, (42), 2 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) [2022-11-20 09:32:51,441 INFO L276 IsEmpty]: Start isEmpty. Operand 8093 states and 10954 transitions. [2022-11-20 09:32:51,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2022-11-20 09:32:51,444 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:32:51,444 INFO L195 NwaCegarLoop]: trace histogram [48, 12, 12, 12, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 2, 2, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:32:51,492 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-11-20 09:32:51,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 09:32:51,645 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:32:51,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:32:51,645 INFO L85 PathProgramCache]: Analyzing trace with hash 1415406311, now seen corresponding path program 1 times [2022-11-20 09:32:51,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:32:51,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [739640025] [2022-11-20 09:32:51,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:51,647 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 09:32:51,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:32:51,649 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 09:32:51,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-11-20 09:32:56,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:56,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 3528 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 09:32:56,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:32:57,088 INFO L134 CoverageAnalysis]: Checked inductivity of 2601 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2601 trivial. 0 not checked. [2022-11-20 09:32:57,088 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:32:57,089 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:32:57,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [739640025] [2022-11-20 09:32:57,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [739640025] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:32:57,089 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:32:57,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:32:57,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705642627] [2022-11-20 09:32:57,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:32:57,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:32:57,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:32:57,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:32:57,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:32:57,091 INFO L87 Difference]: Start difference. First operand 8093 states and 10954 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 3 states have call successors, (40), 3 states have call predecessors, (40), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2022-11-20 09:32:59,230 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 09:33:00,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:33:00,037 INFO L93 Difference]: Finished difference Result 16915 states and 22921 transitions. [2022-11-20 09:33:00,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:33:00,037 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 3 states have call successors, (40), 3 states have call predecessors, (40), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) Word has length 424 [2022-11-20 09:33:00,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:33:00,062 INFO L225 Difference]: With dead ends: 16915 [2022-11-20 09:33:00,062 INFO L226 Difference]: Without dead ends: 8865 [2022-11-20 09:33:00,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 423 GetRequests, 422 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:33:00,086 INFO L413 NwaCegarLoop]: 2307 mSDtfsCounter, 1140 mSDsluCounter, 1234 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1140 SdHoareTripleChecker+Valid, 3541 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-20 09:33:00,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1140 Valid, 3541 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-11-20 09:33:00,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8865 states. [2022-11-20 09:33:00,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8865 to 8664. [2022-11-20 09:33:00,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8664 states, 6555 states have (on average 1.3336384439359268) internal successors, (8742), 6721 states have internal predecessors, (8742), 1410 states have call successors, (1410), 669 states have call predecessors, (1410), 698 states have return successors, (1498), 1381 states have call predecessors, (1498), 1380 states have call successors, (1498) [2022-11-20 09:33:00,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8664 states to 8664 states and 11650 transitions. [2022-11-20 09:33:00,742 INFO L78 Accepts]: Start accepts. Automaton has 8664 states and 11650 transitions. Word has length 424 [2022-11-20 09:33:00,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:33:00,743 INFO L495 AbstractCegarLoop]: Abstraction has 8664 states and 11650 transitions. [2022-11-20 09:33:00,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 3 states have call successors, (40), 3 states have call predecessors, (40), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2022-11-20 09:33:00,743 INFO L276 IsEmpty]: Start isEmpty. Operand 8664 states and 11650 transitions. [2022-11-20 09:33:00,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2022-11-20 09:33:00,749 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:33:00,749 INFO L195 NwaCegarLoop]: trace histogram [48, 13, 13, 13, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 9, 9, 9, 9, 9, 9, 9, 9, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:33:00,795 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-11-20 09:33:00,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 09:33:00,971 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:33:00,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:33:00,972 INFO L85 PathProgramCache]: Analyzing trace with hash -847426648, now seen corresponding path program 1 times [2022-11-20 09:33:00,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:33:00,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [571409394] [2022-11-20 09:33:00,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:33:00,974 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 09:33:00,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:33:00,974 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 09:33:00,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-11-20 09:33:05,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:06,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 3656 conjuncts, 59 conjunts are in the unsatisfiable core [2022-11-20 09:33:06,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:33:18,251 INFO L134 CoverageAnalysis]: Checked inductivity of 2761 backedges. 185 proven. 6 refuted. 0 times theorem prover too weak. 2570 trivial. 0 not checked. [2022-11-20 09:33:18,251 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:33:50,329 INFO L134 CoverageAnalysis]: Checked inductivity of 2761 backedges. 31 proven. 15 refuted. 0 times theorem prover too weak. 2715 trivial. 0 not checked. [2022-11-20 09:33:50,330 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:33:50,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [571409394] [2022-11-20 09:33:50,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [571409394] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:33:50,330 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:33:50,330 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 26] total 48 [2022-11-20 09:33:50,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631784270] [2022-11-20 09:33:50,331 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:33:50,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-11-20 09:33:50,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:33:50,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-11-20 09:33:50,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=2117, Unknown=0, NotChecked=0, Total=2256 [2022-11-20 09:33:50,333 INFO L87 Difference]: Start difference. First operand 8664 states and 11650 transitions. Second operand has 48 states, 40 states have (on average 5.125) internal successors, (205), 33 states have internal predecessors, (205), 13 states have call successors, (62), 3 states have call predecessors, (62), 17 states have return successors, (61), 20 states have call predecessors, (61), 13 states have call successors, (61) [2022-11-20 09:33:52,531 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 09:33:54,594 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 09:33:56,692 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 09:33:58,705 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 09:35:24,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:35:24,802 INFO L93 Difference]: Finished difference Result 27649 states and 37633 transitions. [2022-11-20 09:35:24,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-11-20 09:35:24,803 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 40 states have (on average 5.125) internal successors, (205), 33 states have internal predecessors, (205), 13 states have call successors, (62), 3 states have call predecessors, (62), 17 states have return successors, (61), 20 states have call predecessors, (61), 13 states have call successors, (61) Word has length 474 [2022-11-20 09:35:24,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:35:24,855 INFO L225 Difference]: With dead ends: 27649 [2022-11-20 09:35:24,855 INFO L226 Difference]: Without dead ends: 19066 [2022-11-20 09:35:24,870 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 977 GetRequests, 900 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 976 ImplicationChecksByTransitivity, 43.9s TimeCoverageRelationStatistics Valid=390, Invalid=5616, Unknown=0, NotChecked=0, Total=6006 [2022-11-20 09:35:24,871 INFO L413 NwaCegarLoop]: 2323 mSDtfsCounter, 2785 mSDsluCounter, 66772 mSDsCounter, 0 mSdLazyCounter, 5172 mSolverCounterSat, 517 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 70.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2851 SdHoareTripleChecker+Valid, 69095 SdHoareTripleChecker+Invalid, 5693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 517 IncrementalHoareTripleChecker+Valid, 5172 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 73.8s IncrementalHoareTripleChecker+Time [2022-11-20 09:35:24,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2851 Valid, 69095 Invalid, 5693 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [517 Valid, 5172 Invalid, 4 Unknown, 0 Unchecked, 73.8s Time] [2022-11-20 09:35:24,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19066 states. [2022-11-20 09:35:26,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19066 to 16925. [2022-11-20 09:35:26,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16925 states, 12846 states have (on average 1.3389381908765374) internal successors, (17200), 13174 states have internal predecessors, (17200), 2719 states have call successors, (2719), 1280 states have call predecessors, (2719), 1359 states have return successors, (2941), 2686 states have call predecessors, (2941), 2689 states have call successors, (2941) [2022-11-20 09:35:26,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16925 states to 16925 states and 22860 transitions. [2022-11-20 09:35:26,369 INFO L78 Accepts]: Start accepts. Automaton has 16925 states and 22860 transitions. Word has length 474 [2022-11-20 09:35:26,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:35:26,370 INFO L495 AbstractCegarLoop]: Abstraction has 16925 states and 22860 transitions. [2022-11-20 09:35:26,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 40 states have (on average 5.125) internal successors, (205), 33 states have internal predecessors, (205), 13 states have call successors, (62), 3 states have call predecessors, (62), 17 states have return successors, (61), 20 states have call predecessors, (61), 13 states have call successors, (61) [2022-11-20 09:35:26,370 INFO L276 IsEmpty]: Start isEmpty. Operand 16925 states and 22860 transitions. [2022-11-20 09:35:26,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 485 [2022-11-20 09:35:26,380 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:35:26,381 INFO L195 NwaCegarLoop]: trace histogram [48, 13, 13, 13, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 9, 9, 9, 9, 9, 9, 9, 9, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:35:26,436 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-11-20 09:35:26,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 09:35:26,603 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:35:26,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:35:26,604 INFO L85 PathProgramCache]: Analyzing trace with hash 854122793, now seen corresponding path program 1 times [2022-11-20 09:35:26,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:35:26,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1010650537] [2022-11-20 09:35:26,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:35:26,606 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 09:35:26,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:35:26,607 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 09:35:26,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-11-20 09:35:31,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:31,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 3677 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-20 09:35:31,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:35:37,907 INFO L134 CoverageAnalysis]: Checked inductivity of 2761 backedges. 158 proven. 0 refuted. 0 times theorem prover too weak. 2603 trivial. 0 not checked. [2022-11-20 09:35:37,907 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:35:37,907 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:35:37,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1010650537] [2022-11-20 09:35:37,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1010650537] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:35:37,908 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:35:37,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-20 09:35:37,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755749063] [2022-11-20 09:35:37,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:35:37,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 09:35:37,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:35:37,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 09:35:37,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-11-20 09:35:37,910 INFO L87 Difference]: Start difference. First operand 16925 states and 22860 transitions. Second operand has 13 states, 13 states have (on average 11.76923076923077) internal successors, (153), 11 states have internal predecessors, (153), 5 states have call successors, (49), 4 states have call predecessors, (49), 6 states have return successors, (45), 7 states have call predecessors, (45), 5 states have call successors, (45) [2022-11-20 09:35:41,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:35:41,171 INFO L93 Difference]: Finished difference Result 41619 states and 56323 transitions. [2022-11-20 09:35:41,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 09:35:41,172 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 11.76923076923077) internal successors, (153), 11 states have internal predecessors, (153), 5 states have call successors, (49), 4 states have call predecessors, (49), 6 states have return successors, (45), 7 states have call predecessors, (45), 5 states have call successors, (45) Word has length 484 [2022-11-20 09:35:41,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:35:41,250 INFO L225 Difference]: With dead ends: 41619 [2022-11-20 09:35:41,250 INFO L226 Difference]: Without dead ends: 24739 [2022-11-20 09:35:41,279 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 486 GetRequests, 472 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-11-20 09:35:41,279 INFO L413 NwaCegarLoop]: 2055 mSDtfsCounter, 1140 mSDsluCounter, 19403 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1149 SdHoareTripleChecker+Valid, 21458 SdHoareTripleChecker+Invalid, 693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 680 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 09:35:41,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1149 Valid, 21458 Invalid, 693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 9 Invalid, 0 Unknown, 680 Unchecked, 0.1s Time] [2022-11-20 09:35:41,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24739 states. [2022-11-20 09:35:43,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24739 to 24435. [2022-11-20 09:35:43,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24435 states, 18617 states have (on average 1.3462963957673095) internal successors, (25064), 19083 states have internal predecessors, (25064), 3872 states have call successors, (3872), 1840 states have call predecessors, (3872), 1945 states have return successors, (4232), 3805 states have call predecessors, (4232), 3842 states have call successors, (4232) [2022-11-20 09:35:43,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24435 states to 24435 states and 33168 transitions. [2022-11-20 09:35:43,352 INFO L78 Accepts]: Start accepts. Automaton has 24435 states and 33168 transitions. Word has length 484 [2022-11-20 09:35:43,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:35:43,352 INFO L495 AbstractCegarLoop]: Abstraction has 24435 states and 33168 transitions. [2022-11-20 09:35:43,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.76923076923077) internal successors, (153), 11 states have internal predecessors, (153), 5 states have call successors, (49), 4 states have call predecessors, (49), 6 states have return successors, (45), 7 states have call predecessors, (45), 5 states have call successors, (45) [2022-11-20 09:35:43,353 INFO L276 IsEmpty]: Start isEmpty. Operand 24435 states and 33168 transitions. [2022-11-20 09:35:43,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 512 [2022-11-20 09:35:43,362 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:35:43,362 INFO L195 NwaCegarLoop]: trace histogram [48, 15, 15, 15, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 9, 9, 9, 9, 9, 9, 9, 9, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 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, 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, 1, 1, 1] [2022-11-20 09:35:43,539 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Ended with exit code 0 [2022-11-20 09:35:43,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 09:35:43,739 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:35:43,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:35:43,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1529506821, now seen corresponding path program 1 times [2022-11-20 09:35:43,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:35:43,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2089713224] [2022-11-20 09:35:43,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:35:43,742 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 09:35:43,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:35:43,743 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 09:35:43,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-11-20 09:35:48,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:48,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 3772 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 09:35:48,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:35:49,573 INFO L134 CoverageAnalysis]: Checked inductivity of 3106 backedges. 178 proven. 0 refuted. 0 times theorem prover too weak. 2928 trivial. 0 not checked. [2022-11-20 09:35:49,573 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:35:49,573 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:35:49,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2089713224] [2022-11-20 09:35:49,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2089713224] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:35:49,573 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:35:49,574 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:35:49,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920982041] [2022-11-20 09:35:49,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:35:49,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:35:49,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:35:49,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:35:49,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:35:49,576 INFO L87 Difference]: Start difference. First operand 24435 states and 33168 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 3 states have call successors, (46), 3 states have call predecessors, (46), 3 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2022-11-20 09:35:51,697 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 09:35:55,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:35:55,174 INFO L93 Difference]: Finished difference Result 63677 states and 87053 transitions. [2022-11-20 09:35:55,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:35:55,175 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 3 states have call successors, (46), 3 states have call predecessors, (46), 3 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) Word has length 511 [2022-11-20 09:35:55,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:35:55,280 INFO L225 Difference]: With dead ends: 63677 [2022-11-20 09:35:55,281 INFO L226 Difference]: Without dead ends: 39323 [2022-11-20 09:35:55,322 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 510 GetRequests, 509 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:35:55,323 INFO L413 NwaCegarLoop]: 2037 mSDtfsCounter, 1133 mSDsluCounter, 1270 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 11 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1133 SdHoareTripleChecker+Valid, 3307 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-20 09:35:55,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1133 Valid, 3307 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 28 Invalid, 1 Unknown, 0 Unchecked, 2.5s Time] [2022-11-20 09:35:55,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39323 states. [2022-11-20 09:35:58,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39323 to 39184. [2022-11-20 09:35:58,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39184 states, 30112 states have (on average 1.363144261424017) internal successors, (41047), 30895 states have internal predecessors, (41047), 6037 states have call successors, (6037), 2889 states have call predecessors, (6037), 3034 states have return successors, (6559), 5914 states have call predecessors, (6559), 6007 states have call successors, (6559) [2022-11-20 09:35:58,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39184 states to 39184 states and 53643 transitions. [2022-11-20 09:35:58,921 INFO L78 Accepts]: Start accepts. Automaton has 39184 states and 53643 transitions. Word has length 511 [2022-11-20 09:35:58,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:35:58,922 INFO L495 AbstractCegarLoop]: Abstraction has 39184 states and 53643 transitions. [2022-11-20 09:35:58,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 3 states have call successors, (46), 3 states have call predecessors, (46), 3 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2022-11-20 09:35:58,922 INFO L276 IsEmpty]: Start isEmpty. Operand 39184 states and 53643 transitions. [2022-11-20 09:35:58,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 522 [2022-11-20 09:35:58,932 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:35:58,932 INFO L195 NwaCegarLoop]: trace histogram [48, 15, 15, 15, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 9, 9, 9, 9, 9, 9, 9, 9, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 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, 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, 1, 1, 1, 1] [2022-11-20 09:35:59,000 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2022-11-20 09:35:59,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 09:35:59,155 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:35:59,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:35:59,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1375882939, now seen corresponding path program 1 times [2022-11-20 09:35:59,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:35:59,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1612272617] [2022-11-20 09:35:59,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:35:59,158 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 09:35:59,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:35:59,159 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 09:35:59,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-11-20 09:36:04,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:36:04,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 3790 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 09:36:04,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:36:04,670 INFO L134 CoverageAnalysis]: Checked inductivity of 3114 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3106 trivial. 0 not checked. [2022-11-20 09:36:04,671 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:36:04,671 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:36:04,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1612272617] [2022-11-20 09:36:04,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1612272617] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:36:04,671 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:36:04,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:36:04,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624586051] [2022-11-20 09:36:04,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:36:04,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:36:04,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:36:04,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:36:04,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:36:04,673 INFO L87 Difference]: Start difference. First operand 39184 states and 53643 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 2 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2022-11-20 09:36:06,793 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 09:36:12,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:36:12,245 INFO L93 Difference]: Finished difference Result 90240 states and 123870 transitions. [2022-11-20 09:36:12,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:36:12,246 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 2 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) Word has length 521 [2022-11-20 09:36:12,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:36:12,427 INFO L225 Difference]: With dead ends: 90240 [2022-11-20 09:36:12,428 INFO L226 Difference]: Without dead ends: 51137 [2022-11-20 09:36:12,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 520 GetRequests, 519 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:36:12,514 INFO L413 NwaCegarLoop]: 2406 mSDtfsCounter, 1211 mSDsluCounter, 1210 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 12 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1211 SdHoareTripleChecker+Valid, 3616 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-20 09:36:12,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1211 Valid, 3616 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 28 Invalid, 1 Unknown, 0 Unchecked, 2.5s Time] [2022-11-20 09:36:12,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51137 states. [2022-11-20 09:36:17,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51137 to 51027. [2022-11-20 09:36:17,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51027 states, 39305 states have (on average 1.3674341686808293) internal successors, (53747), 40357 states have internal predecessors, (53747), 7801 states have call successors, (7801), 3745 states have call predecessors, (7801), 3920 states have return successors, (8466), 7622 states have call predecessors, (8466), 7771 states have call successors, (8466) [2022-11-20 09:36:17,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51027 states to 51027 states and 70014 transitions. [2022-11-20 09:36:17,581 INFO L78 Accepts]: Start accepts. Automaton has 51027 states and 70014 transitions. Word has length 521 [2022-11-20 09:36:17,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:36:17,581 INFO L495 AbstractCegarLoop]: Abstraction has 51027 states and 70014 transitions. [2022-11-20 09:36:17,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 2 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2022-11-20 09:36:17,582 INFO L276 IsEmpty]: Start isEmpty. Operand 51027 states and 70014 transitions. [2022-11-20 09:36:17,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 499 [2022-11-20 09:36:17,594 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:36:17,594 INFO L195 NwaCegarLoop]: trace histogram [48, 12, 12, 12, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:36:17,654 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Ended with exit code 0 [2022-11-20 09:36:17,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 09:36:17,807 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:36:17,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:36:17,808 INFO L85 PathProgramCache]: Analyzing trace with hash 911646517, now seen corresponding path program 1 times [2022-11-20 09:36:17,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:36:17,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [473778207] [2022-11-20 09:36:17,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:36:17,810 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 09:36:17,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:36:17,810 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 09:36:17,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bbf58ab-598e-4e9b-8a47-bde7eaaab28f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-11-20 09:36:22,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:36:22,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 3728 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 09:36:22,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:36:22,966 INFO L134 CoverageAnalysis]: Checked inductivity of 2614 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2611 trivial. 0 not checked. [2022-11-20 09:36:22,966 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:36:22,966 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:36:22,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [473778207] [2022-11-20 09:36:22,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [473778207] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:36:22,967 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:36:22,967 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:36:22,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094566534] [2022-11-20 09:36:22,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:36:22,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:36:22,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:36:22,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:36:22,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:36:22,968 INFO L87 Difference]: Start difference. First operand 51027 states and 70014 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 2 states have call successors, (50), 2 states have call predecessors, (50), 2 states have return successors, (46), 2 states have call predecessors, (46), 2 states have call successors, (46) [2022-11-20 09:36:25,089 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers []