./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--esd_usb2.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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e372919e-ad62-45ab-8331-903d008871db/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e372919e-ad62-45ab-8331-903d008871db/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_e372919e-ad62-45ab-8331-903d008871db/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e372919e-ad62-45ab-8331-903d008871db/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--esd_usb2.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e372919e-ad62-45ab-8331-903d008871db/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_e372919e-ad62-45ab-8331-903d008871db/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 781669661afd0476205c0d0f127c7931dffbaabf4aae46244e576c29ee5a8115 --- 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 12:44:12,439 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:44:12,442 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:44:12,475 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:44:12,475 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:44:12,477 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:44:12,478 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:44:12,480 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:44:12,482 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:44:12,483 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:44:12,484 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:44:12,485 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:44:12,486 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:44:12,487 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:44:12,488 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:44:12,489 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:44:12,490 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:44:12,491 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:44:12,493 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:44:12,495 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:44:12,496 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:44:12,498 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:44:12,499 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:44:12,500 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:44:12,504 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:44:12,505 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:44:12,505 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:44:12,506 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:44:12,507 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:44:12,508 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:44:12,508 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:44:12,509 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:44:12,510 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:44:12,511 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:44:12,512 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:44:12,512 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:44:12,513 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:44:12,514 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:44:12,514 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:44:12,515 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:44:12,515 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:44:12,516 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e372919e-ad62-45ab-8331-903d008871db/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-20 12:44:12,539 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:44:12,539 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:44:12,539 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:44:12,540 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:44:12,540 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:44:12,540 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:44:12,541 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:44:12,541 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:44:12,541 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:44:12,542 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:44:12,542 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:44:12,542 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:44:12,542 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:44:12,543 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:44:12,543 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:44:12,543 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:44:12,543 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:44:12,543 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:44:12,544 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:44:12,544 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:44:12,544 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:44:12,544 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:44:12,544 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:44:12,545 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:44:12,545 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:44:12,545 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 12:44:12,545 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 12:44:12,545 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:44:12,546 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:44:12,546 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:44:12,546 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_e372919e-ad62-45ab-8331-903d008871db/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e372919e-ad62-45ab-8331-903d008871db/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 781669661afd0476205c0d0f127c7931dffbaabf4aae46244e576c29ee5a8115 [2022-11-20 12:44:12,790 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:44:12,826 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:44:12,829 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:44:12,831 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:44:12,831 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:44:12,833 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e372919e-ad62-45ab-8331-903d008871db/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--esd_usb2.ko-entry_point.cil.out.i [2022-11-20 12:44:15,988 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:44:16,617 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:44:16,618 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e372919e-ad62-45ab-8331-903d008871db/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--esd_usb2.ko-entry_point.cil.out.i [2022-11-20 12:44:16,662 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e372919e-ad62-45ab-8331-903d008871db/bin/uautomizer-ug76WZFUDN/data/f4b27d1b9/4ce36c88e6984506a47782383305a90a/FLAG0f9bec1af [2022-11-20 12:44:16,683 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e372919e-ad62-45ab-8331-903d008871db/bin/uautomizer-ug76WZFUDN/data/f4b27d1b9/4ce36c88e6984506a47782383305a90a [2022-11-20 12:44:16,688 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:44:16,690 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:44:16,691 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:44:16,692 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:44:16,697 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:44:16,698 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:44:16" (1/1) ... [2022-11-20 12:44:16,699 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6da3ac58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:44:16, skipping insertion in model container [2022-11-20 12:44:16,700 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:44:16" (1/1) ... [2022-11-20 12:44:16,708 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:44:16,846 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:44:17,430 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 12:44:17,441 INFO L158 Benchmark]: Toolchain (without parser) took 749.16ms. Allocated memory is still 151.0MB. Free memory was 111.0MB in the beginning and 110.9MB in the end (delta: 149.6kB). Peak memory consumption was 67.7MB. Max. memory is 16.1GB. [2022-11-20 12:44:17,441 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 117.4MB. Free memory is still 72.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 12:44:17,442 INFO L158 Benchmark]: CACSL2BoogieTranslator took 746.70ms. Allocated memory is still 151.0MB. Free memory was 111.0MB in the beginning and 110.9MB in the end (delta: 149.6kB). Peak memory consumption was 67.7MB. Max. memory is 16.1GB. [2022-11-20 12:44:17,444 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 117.4MB. Free memory is still 72.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 746.70ms. Allocated memory is still 151.0MB. Free memory was 111.0MB in the beginning and 110.9MB in the end (delta: 149.6kB). Peak memory consumption was 67.7MB. 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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e372919e-ad62-45ab-8331-903d008871db/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e372919e-ad62-45ab-8331-903d008871db/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_e372919e-ad62-45ab-8331-903d008871db/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e372919e-ad62-45ab-8331-903d008871db/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--esd_usb2.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e372919e-ad62-45ab-8331-903d008871db/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_e372919e-ad62-45ab-8331-903d008871db/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 781669661afd0476205c0d0f127c7931dffbaabf4aae46244e576c29ee5a8115 --- 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 12:44:19,884 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:44:19,887 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:44:19,921 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:44:19,922 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:44:19,928 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:44:19,930 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:44:19,932 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:44:19,934 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:44:19,935 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:44:19,936 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:44:19,938 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:44:19,938 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:44:19,940 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:44:19,941 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:44:19,943 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:44:19,947 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:44:19,948 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:44:19,950 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:44:19,952 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:44:19,954 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:44:19,962 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:44:19,966 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:44:19,970 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:44:19,975 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:44:19,978 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:44:19,983 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:44:19,984 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:44:19,985 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:44:19,986 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:44:19,986 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:44:19,987 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:44:19,989 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:44:19,991 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:44:19,993 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:44:19,998 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:44:19,999 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:44:19,999 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:44:20,000 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:44:20,001 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:44:20,001 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:44:20,003 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e372919e-ad62-45ab-8331-903d008871db/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-11-20 12:44:20,031 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:44:20,040 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:44:20,041 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:44:20,041 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:44:20,042 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:44:20,042 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:44:20,043 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:44:20,043 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:44:20,043 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:44:20,044 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:44:20,045 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:44:20,045 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:44:20,045 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:44:20,045 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:44:20,046 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 12:44:20,046 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-20 12:44:20,046 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-20 12:44:20,046 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:44:20,047 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:44:20,047 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:44:20,047 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:44:20,047 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:44:20,048 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:44:20,048 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:44:20,048 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:44:20,048 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:44:20,049 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:44:20,049 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-20 12:44:20,050 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-20 12:44:20,050 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:44:20,050 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:44:20,051 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:44:20,051 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-20 12:44:20,051 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_e372919e-ad62-45ab-8331-903d008871db/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e372919e-ad62-45ab-8331-903d008871db/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 781669661afd0476205c0d0f127c7931dffbaabf4aae46244e576c29ee5a8115 [2022-11-20 12:44:20,504 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:44:20,541 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:44:20,545 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:44:20,547 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:44:20,548 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:44:20,549 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e372919e-ad62-45ab-8331-903d008871db/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--esd_usb2.ko-entry_point.cil.out.i [2022-11-20 12:44:23,798 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:44:24,465 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:44:24,465 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e372919e-ad62-45ab-8331-903d008871db/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--esd_usb2.ko-entry_point.cil.out.i [2022-11-20 12:44:24,513 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e372919e-ad62-45ab-8331-903d008871db/bin/uautomizer-ug76WZFUDN/data/05002bda1/6017c3e7c62a40359c1457d2201b4f58/FLAG38db8f197 [2022-11-20 12:44:24,539 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e372919e-ad62-45ab-8331-903d008871db/bin/uautomizer-ug76WZFUDN/data/05002bda1/6017c3e7c62a40359c1457d2201b4f58 [2022-11-20 12:44:24,543 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:44:24,546 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:44:24,551 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:44:24,551 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:44:24,555 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:44:24,556 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:44:24" (1/1) ... [2022-11-20 12:44:24,557 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@427fcfa5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:44:24, skipping insertion in model container [2022-11-20 12:44:24,557 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:44:24" (1/1) ... [2022-11-20 12:44:24,567 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:44:24,741 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:44:25,709 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_e372919e-ad62-45ab-8331-903d008871db/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--esd_usb2.ko-entry_point.cil.out.i[163937,163950] [2022-11-20 12:44:26,235 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:44:26,327 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-20 12:44:26,376 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:44:26,586 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_e372919e-ad62-45ab-8331-903d008871db/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--esd_usb2.ko-entry_point.cil.out.i[163937,163950] [2022-11-20 12:44:26,779 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:44:26,812 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:44:27,011 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_e372919e-ad62-45ab-8331-903d008871db/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--esd_usb2.ko-entry_point.cil.out.i[163937,163950] [2022-11-20 12:44:27,244 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:44:27,350 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:44:27,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:44:27 WrapperNode [2022-11-20 12:44:27,351 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:44:27,352 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:44:27,352 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:44:27,353 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:44:27,360 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:44:27" (1/1) ... [2022-11-20 12:44:27,477 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:44:27" (1/1) ... [2022-11-20 12:44:27,669 INFO L138 Inliner]: procedures = 169, calls = 847, calls flagged for inlining = 71, calls inlined = 71, statements flattened = 2286 [2022-11-20 12:44:27,670 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:44:27,671 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:44:27,671 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:44:27,672 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:44:27,682 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:44:27" (1/1) ... [2022-11-20 12:44:27,682 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:44:27" (1/1) ... [2022-11-20 12:44:27,710 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:44:27" (1/1) ... [2022-11-20 12:44:27,711 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:44:27" (1/1) ... [2022-11-20 12:44:27,826 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:44:27" (1/1) ... [2022-11-20 12:44:27,834 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:44:27" (1/1) ... [2022-11-20 12:44:27,862 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:44:27" (1/1) ... [2022-11-20 12:44:27,870 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:44:27" (1/1) ... [2022-11-20 12:44:27,885 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:44:27,886 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:44:27,886 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:44:27,886 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:44:27,887 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:44:27" (1/1) ... [2022-11-20 12:44:27,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:44:27,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e372919e-ad62-45ab-8331-903d008871db/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:44:27,919 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e372919e-ad62-45ab-8331-903d008871db/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 12:44:27,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e372919e-ad62-45ab-8331-903d008871db/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 12:44:27,970 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2022-11-20 12:44:27,970 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2022-11-20 12:44:27,970 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_fill_bulk_urb_2 [2022-11-20 12:44:27,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_fill_bulk_urb_2 [2022-11-20 12:44:27,970 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-11-20 12:44:27,970 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata_17 [2022-11-20 12:44:27,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata_17 [2022-11-20 12:44:27,971 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_3 [2022-11-20 12:44:27,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_3 [2022-11-20 12:44:27,971 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-11-20 12:44:27,971 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-20 12:44:27,971 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2022-11-20 12:44:27,971 INFO L130 BoogieDeclarations]: Found specification of procedure usb_bulk_msg [2022-11-20 12:44:27,971 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_bulk_msg [2022-11-20 12:44:27,971 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-20 12:44:27,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-20 12:44:27,972 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-11-20 12:44:27,972 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-11-20 12:44:27,972 INFO L130 BoogieDeclarations]: Found specification of procedure can_free_echo_skb [2022-11-20 12:44:27,972 INFO L138 BoogieDeclarations]: Found implementation of procedure can_free_echo_skb [2022-11-20 12:44:27,972 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_present [2022-11-20 12:44:27,972 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_present [2022-11-20 12:44:27,972 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2022-11-20 12:44:27,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2022-11-20 12:44:27,973 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-20 12:44:27,973 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-20 12:44:27,973 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-11-20 12:44:27,973 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-11-20 12:44:27,973 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-20 12:44:27,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-20 12:44:27,973 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_urb [2022-11-20 12:44:27,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_urb [2022-11-20 12:44:27,974 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_anchored_urbs [2022-11-20 12:44:27,974 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_anchored_urbs [2022-11-20 12:44:27,974 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-20 12:44:27,974 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-20 12:44:27,974 INFO L130 BoogieDeclarations]: Found specification of procedure init_usb_anchor [2022-11-20 12:44:27,974 INFO L138 BoogieDeclarations]: Found implementation of procedure init_usb_anchor [2022-11-20 12:44:27,974 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-20 12:44:27,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-20 12:44:27,975 INFO L130 BoogieDeclarations]: Found specification of procedure device_create_file [2022-11-20 12:44:27,975 INFO L138 BoogieDeclarations]: Found implementation of procedure device_create_file [2022-11-20 12:44:27,975 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-20 12:44:27,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-20 12:44:27,975 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-20 12:44:27,975 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-20 12:44:27,975 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-20 12:44:27,976 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-20 12:44:27,976 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 12:44:27,976 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___0 [2022-11-20 12:44:27,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___0 [2022-11-20 12:44:27,976 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_intfdata_4 [2022-11-20 12:44:27,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_intfdata_4 [2022-11-20 12:44:27,976 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 12:44:27,976 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-20 12:44:27,976 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-20 12:44:27,977 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-20 12:44:27,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-20 12:44:27,977 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 12:44:27,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 12:44:27,977 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-20 12:44:27,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-20 12:44:27,977 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_coherent [2022-11-20 12:44:27,977 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_coherent [2022-11-20 12:44:27,977 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_coherent [2022-11-20 12:44:27,978 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_coherent [2022-11-20 12:44:27,978 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 12:44:27,978 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2022-11-20 12:44:27,978 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2022-11-20 12:44:27,978 INFO L130 BoogieDeclarations]: Found specification of procedure netif_rx [2022-11-20 12:44:27,978 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_rx [2022-11-20 12:44:27,978 INFO L130 BoogieDeclarations]: Found specification of procedure usb_anchor_urb [2022-11-20 12:44:27,978 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_anchor_urb [2022-11-20 12:44:27,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-11-20 12:44:27,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-11-20 12:44:27,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2022-11-20 12:44:27,979 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 12:44:27,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-20 12:44:27,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-20 12:44:27,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2022-11-20 12:44:27,980 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-20 12:44:27,980 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-20 12:44:27,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-20 12:44:27,980 INFO L130 BoogieDeclarations]: Found specification of procedure esd_usb2_read_bulk_callback [2022-11-20 12:44:27,980 INFO L138 BoogieDeclarations]: Found implementation of procedure esd_usb2_read_bulk_callback [2022-11-20 12:44:27,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-11-20 12:44:27,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2022-11-20 12:44:27,980 INFO L130 BoogieDeclarations]: Found specification of procedure esd_usb2_send_msg [2022-11-20 12:44:27,981 INFO L138 BoogieDeclarations]: Found implementation of procedure esd_usb2_send_msg [2022-11-20 12:44:27,981 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_detach [2022-11-20 12:44:27,981 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_detach [2022-11-20 12:44:27,981 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-20 12:44:27,981 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-20 12:44:27,981 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-20 12:44:27,981 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-20 12:44:27,981 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unanchor_urb [2022-11-20 12:44:27,982 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unanchor_urb [2022-11-20 12:44:27,982 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-20 12:44:27,982 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-20 12:44:27,982 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2022-11-20 12:44:27,982 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2022-11-20 12:44:27,982 INFO L130 BoogieDeclarations]: Found specification of procedure close_candev [2022-11-20 12:44:27,982 INFO L138 BoogieDeclarations]: Found implementation of procedure close_candev [2022-11-20 12:44:27,983 INFO L130 BoogieDeclarations]: Found specification of procedure free_candev [2022-11-20 12:44:27,983 INFO L138 BoogieDeclarations]: Found implementation of procedure free_candev [2022-11-20 12:44:27,983 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-20 12:44:27,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-20 12:44:27,983 INFO L130 BoogieDeclarations]: Found specification of procedure device_remove_file [2022-11-20 12:44:27,983 INFO L138 BoogieDeclarations]: Found implementation of procedure device_remove_file [2022-11-20 12:44:27,983 INFO L130 BoogieDeclarations]: Found specification of procedure esd_usb2_disconnect [2022-11-20 12:44:27,983 INFO L138 BoogieDeclarations]: Found implementation of procedure esd_usb2_disconnect [2022-11-20 12:44:27,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:44:27,984 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:44:28,683 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:44:28,686 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:44:28,990 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-20 12:44:37,547 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stop___0FINAL: assume true; [2022-11-20 12:44:51,451 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:44:51,464 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:44:51,464 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-20 12:44:51,468 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:44:51 BoogieIcfgContainer [2022-11-20 12:44:51,468 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:44:51,471 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 12:44:51,471 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 12:44:51,475 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 12:44:51,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:44:24" (1/3) ... [2022-11-20 12:44:51,476 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68b45f6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:44:51, skipping insertion in model container [2022-11-20 12:44:51,476 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:44:27" (2/3) ... [2022-11-20 12:44:51,476 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68b45f6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:44:51, skipping insertion in model container [2022-11-20 12:44:51,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:44:51" (3/3) ... [2022-11-20 12:44:51,478 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--esd_usb2.ko-entry_point.cil.out.i [2022-11-20 12:44:51,501 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 12:44:51,501 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 12:44:51,575 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:44:51,582 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;@1b35c289, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:44:51,583 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 12:44:51,591 INFO L276 IsEmpty]: Start isEmpty. Operand has 685 states, 497 states have (on average 1.3460764587525151) internal successors, (669), 525 states have internal predecessors, (669), 142 states have call successors, (142), 46 states have call predecessors, (142), 44 states have return successors, (133), 132 states have call predecessors, (133), 133 states have call successors, (133) [2022-11-20 12:44:51,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-20 12:44:51,606 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:44:51,607 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:44:51,607 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:44:51,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:44:51,613 INFO L85 PathProgramCache]: Analyzing trace with hash -1756755140, now seen corresponding path program 1 times [2022-11-20 12:44:51,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:44:51,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1960366464] [2022-11-20 12:44:51,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:44:51,631 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 12:44:51,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e372919e-ad62-45ab-8331-903d008871db/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:44:51,638 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e372919e-ad62-45ab-8331-903d008871db/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 12:44:51,681 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e372919e-ad62-45ab-8331-903d008871db/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 12:44:52,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:52,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 807 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:44:52,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:44:52,701 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2022-11-20 12:44:52,702 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:44:52,703 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:44:52,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1960366464] [2022-11-20 12:44:52,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1960366464] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:44:52,704 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:44:52,704 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:44:52,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588140603] [2022-11-20 12:44:52,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:44:52,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:44:52,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:44:52,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:44:52,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:44:52,748 INFO L87 Difference]: Start difference. First operand has 685 states, 497 states have (on average 1.3460764587525151) internal successors, (669), 525 states have internal predecessors, (669), 142 states have call successors, (142), 46 states have call predecessors, (142), 44 states have return successors, (133), 132 states have call predecessors, (133), 133 states have call successors, (133) Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2022-11-20 12:44:53,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:44:53,318 INFO L93 Difference]: Finished difference Result 1993 states and 2809 transitions. [2022-11-20 12:44:53,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:44:53,321 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 83 [2022-11-20 12:44:53,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:44:53,360 INFO L225 Difference]: With dead ends: 1993 [2022-11-20 12:44:53,361 INFO L226 Difference]: Without dead ends: 1285 [2022-11-20 12:44:53,373 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 81 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 12:44:53,379 INFO L413 NwaCegarLoop]: 1058 mSDtfsCounter, 862 mSDsluCounter, 917 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 862 SdHoareTripleChecker+Valid, 1975 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:44:53,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [862 Valid, 1975 Invalid, 15 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 12:44:53,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1285 states. [2022-11-20 12:44:53,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1285 to 1285. [2022-11-20 12:44:53,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1285 states, 950 states have (on average 1.328421052631579) internal successors, (1262), 980 states have internal predecessors, (1262), 248 states have call successors, (248), 87 states have call predecessors, (248), 86 states have return successors, (243), 241 states have call predecessors, (243), 243 states have call successors, (243) [2022-11-20 12:44:53,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1285 states to 1285 states and 1753 transitions. [2022-11-20 12:44:53,596 INFO L78 Accepts]: Start accepts. Automaton has 1285 states and 1753 transitions. Word has length 83 [2022-11-20 12:44:53,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:44:53,597 INFO L495 AbstractCegarLoop]: Abstraction has 1285 states and 1753 transitions. [2022-11-20 12:44:53,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2022-11-20 12:44:53,599 INFO L276 IsEmpty]: Start isEmpty. Operand 1285 states and 1753 transitions. [2022-11-20 12:44:53,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-20 12:44:53,612 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:44:53,612 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:44:53,640 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e372919e-ad62-45ab-8331-903d008871db/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 12:44:53,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e372919e-ad62-45ab-8331-903d008871db/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 12:44:53,825 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:44:53,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:44:53,826 INFO L85 PathProgramCache]: Analyzing trace with hash -784445184, now seen corresponding path program 1 times [2022-11-20 12:44:53,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:44:53,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [511437877] [2022-11-20 12:44:53,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:44:53,828 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 12:44:53,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e372919e-ad62-45ab-8331-903d008871db/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:44:53,830 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e372919e-ad62-45ab-8331-903d008871db/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 12:44:53,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e372919e-ad62-45ab-8331-903d008871db/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 12:44:54,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:54,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 851 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 12:44:54,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:44:55,937 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2022-11-20 12:44:55,937 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:44:55,938 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:44:55,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [511437877] [2022-11-20 12:44:55,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [511437877] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:44:55,944 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:44:55,944 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:44:55,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755903835] [2022-11-20 12:44:55,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:44:55,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:44:55,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:44:55,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:44:55,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:44:55,948 INFO L87 Difference]: Start difference. First operand 1285 states and 1753 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2022-11-20 12:44:56,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:44:56,290 INFO L93 Difference]: Finished difference Result 3804 states and 5202 transitions. [2022-11-20 12:44:56,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:44:56,292 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 93 [2022-11-20 12:44:56,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:44:56,313 INFO L225 Difference]: With dead ends: 3804 [2022-11-20 12:44:56,313 INFO L226 Difference]: Without dead ends: 2544 [2022-11-20 12:44:56,319 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 91 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 12:44:56,320 INFO L413 NwaCegarLoop]: 1311 mSDtfsCounter, 854 mSDsluCounter, 868 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 854 SdHoareTripleChecker+Valid, 2179 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:44:56,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [854 Valid, 2179 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:44:56,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2544 states. [2022-11-20 12:44:56,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2544 to 2534. [2022-11-20 12:44:56,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2534 states, 1881 states have (on average 1.328548644338118) internal successors, (2499), 1937 states have internal predecessors, (2499), 480 states have call successors, (480), 173 states have call predecessors, (480), 172 states have return successors, (485), 471 states have call predecessors, (485), 475 states have call successors, (485) [2022-11-20 12:44:56,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2534 states to 2534 states and 3464 transitions. [2022-11-20 12:44:56,597 INFO L78 Accepts]: Start accepts. Automaton has 2534 states and 3464 transitions. Word has length 93 [2022-11-20 12:44:56,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:44:56,600 INFO L495 AbstractCegarLoop]: Abstraction has 2534 states and 3464 transitions. [2022-11-20 12:44:56,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2022-11-20 12:44:56,601 INFO L276 IsEmpty]: Start isEmpty. Operand 2534 states and 3464 transitions. [2022-11-20 12:44:56,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-20 12:44:56,604 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:44:56,605 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:44:56,642 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e372919e-ad62-45ab-8331-903d008871db/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 12:44:56,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e372919e-ad62-45ab-8331-903d008871db/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 12:44:56,823 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:44:56,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:44:56,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1451693715, now seen corresponding path program 1 times [2022-11-20 12:44:56,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:44:56,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1585943192] [2022-11-20 12:44:56,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:44:56,826 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 12:44:56,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e372919e-ad62-45ab-8331-903d008871db/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:44:56,847 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e372919e-ad62-45ab-8331-903d008871db/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 12:44:56,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e372919e-ad62-45ab-8331-903d008871db/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 12:44:57,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:57,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 852 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 12:44:57,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:44:58,581 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2022-11-20 12:44:58,581 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:44:58,582 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:44:58,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1585943192] [2022-11-20 12:44:58,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1585943192] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:44:58,582 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:44:58,582 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:44:58,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279424101] [2022-11-20 12:44:58,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:44:58,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:44:58,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:44:58,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:44:58,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:44:58,584 INFO L87 Difference]: Start difference. First operand 2534 states and 3464 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2022-11-20 12:44:58,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:44:58,837 INFO L93 Difference]: Finished difference Result 2536 states and 3465 transitions. [2022-11-20 12:44:58,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:44:58,839 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 94 [2022-11-20 12:44:58,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:44:58,855 INFO L225 Difference]: With dead ends: 2536 [2022-11-20 12:44:58,855 INFO L226 Difference]: Without dead ends: 2533 [2022-11-20 12:44:58,857 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 92 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 12:44:58,858 INFO L413 NwaCegarLoop]: 909 mSDtfsCounter, 852 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 852 SdHoareTripleChecker+Valid, 909 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 12:44:58,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [852 Valid, 909 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:44:58,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2533 states. [2022-11-20 12:44:59,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2533 to 2533. [2022-11-20 12:44:59,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2533 states, 1881 states have (on average 1.3280170122275385) internal successors, (2498), 1936 states have internal predecessors, (2498), 479 states have call successors, (479), 173 states have call predecessors, (479), 172 states have return successors, (485), 471 states have call predecessors, (485), 475 states have call successors, (485) [2022-11-20 12:44:59,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2533 states to 2533 states and 3462 transitions. [2022-11-20 12:44:59,124 INFO L78 Accepts]: Start accepts. Automaton has 2533 states and 3462 transitions. Word has length 94 [2022-11-20 12:44:59,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:44:59,124 INFO L495 AbstractCegarLoop]: Abstraction has 2533 states and 3462 transitions. [2022-11-20 12:44:59,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2022-11-20 12:44:59,125 INFO L276 IsEmpty]: Start isEmpty. Operand 2533 states and 3462 transitions. [2022-11-20 12:44:59,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-20 12:44:59,126 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:44:59,127 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:44:59,156 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e372919e-ad62-45ab-8331-903d008871db/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)] Forceful destruction successful, exit code 0 [2022-11-20 12:44:59,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e372919e-ad62-45ab-8331-903d008871db/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 12:44:59,350 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:44:59,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:44:59,351 INFO L85 PathProgramCache]: Analyzing trace with hash 2052527715, now seen corresponding path program 1 times [2022-11-20 12:44:59,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:44:59,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [204227970] [2022-11-20 12:44:59,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:44:59,353 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 12:44:59,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e372919e-ad62-45ab-8331-903d008871db/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:44:59,357 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e372919e-ad62-45ab-8331-903d008871db/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 12:44:59,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e372919e-ad62-45ab-8331-903d008871db/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 12:45:00,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:45:00,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 853 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:45:00,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:45:00,566 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2022-11-20 12:45:00,566 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:45:00,567 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:45:00,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [204227970] [2022-11-20 12:45:00,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [204227970] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:45:00,567 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:45:00,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:45:00,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304062241] [2022-11-20 12:45:00,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:45:00,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:45:00,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:45:00,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:45:00,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:45:00,569 INFO L87 Difference]: Start difference. First operand 2533 states and 3462 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2022-11-20 12:45:00,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:45:00,805 INFO L93 Difference]: Finished difference Result 2535 states and 3463 transitions. [2022-11-20 12:45:00,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:45:00,806 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 95 [2022-11-20 12:45:00,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:45:00,819 INFO L225 Difference]: With dead ends: 2535 [2022-11-20 12:45:00,819 INFO L226 Difference]: Without dead ends: 2532 [2022-11-20 12:45:00,821 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 93 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 12:45:00,822 INFO L413 NwaCegarLoop]: 907 mSDtfsCounter, 849 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 849 SdHoareTripleChecker+Valid, 907 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 12:45:00,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [849 Valid, 907 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:45:00,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2532 states. [2022-11-20 12:45:01,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2532 to 2532. [2022-11-20 12:45:01,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2532 states, 1881 states have (on average 1.327485380116959) internal successors, (2497), 1935 states have internal predecessors, (2497), 478 states have call successors, (478), 173 states have call predecessors, (478), 172 states have return successors, (485), 471 states have call predecessors, (485), 475 states have call successors, (485) [2022-11-20 12:45:01,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2532 states to 2532 states and 3460 transitions. [2022-11-20 12:45:01,100 INFO L78 Accepts]: Start accepts. Automaton has 2532 states and 3460 transitions. Word has length 95 [2022-11-20 12:45:01,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:45:01,102 INFO L495 AbstractCegarLoop]: Abstraction has 2532 states and 3460 transitions. [2022-11-20 12:45:01,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2022-11-20 12:45:01,103 INFO L276 IsEmpty]: Start isEmpty. Operand 2532 states and 3460 transitions. [2022-11-20 12:45:01,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-11-20 12:45:01,105 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:45:01,105 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:45:01,134 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e372919e-ad62-45ab-8331-903d008871db/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 12:45:01,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e372919e-ad62-45ab-8331-903d008871db/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 12:45:01,328 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:45:01,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:45:01,329 INFO L85 PathProgramCache]: Analyzing trace with hash -796449898, now seen corresponding path program 1 times [2022-11-20 12:45:01,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:45:01,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1771240191] [2022-11-20 12:45:01,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:45:01,331 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 12:45:01,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e372919e-ad62-45ab-8331-903d008871db/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:45:01,332 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e372919e-ad62-45ab-8331-903d008871db/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 12:45:01,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e372919e-ad62-45ab-8331-903d008871db/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 12:45:02,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:45:02,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 854 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:45:02,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:45:02,478 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2022-11-20 12:45:02,479 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:45:02,479 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:45:02,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1771240191] [2022-11-20 12:45:02,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1771240191] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:45:02,479 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:45:02,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:45:02,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871025502] [2022-11-20 12:45:02,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:45:02,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:45:02,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:45:02,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:45:02,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:45:02,481 INFO L87 Difference]: Start difference. First operand 2532 states and 3460 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2022-11-20 12:45:02,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:45:02,725 INFO L93 Difference]: Finished difference Result 2534 states and 3461 transitions. [2022-11-20 12:45:02,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:45:02,725 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 96 [2022-11-20 12:45:02,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:45:02,744 INFO L225 Difference]: With dead ends: 2534 [2022-11-20 12:45:02,744 INFO L226 Difference]: Without dead ends: 2531 [2022-11-20 12:45:02,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 94 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 12:45:02,747 INFO L413 NwaCegarLoop]: 905 mSDtfsCounter, 846 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 846 SdHoareTripleChecker+Valid, 905 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 12:45:02,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [846 Valid, 905 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:45:02,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2531 states. [2022-11-20 12:45:03,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2531 to 2531. [2022-11-20 12:45:03,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2531 states, 1881 states have (on average 1.3269537480063796) internal successors, (2496), 1934 states have internal predecessors, (2496), 477 states have call successors, (477), 173 states have call predecessors, (477), 172 states have return successors, (485), 471 states have call predecessors, (485), 475 states have call successors, (485) [2022-11-20 12:45:03,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2531 states to 2531 states and 3458 transitions. [2022-11-20 12:45:03,030 INFO L78 Accepts]: Start accepts. Automaton has 2531 states and 3458 transitions. Word has length 96 [2022-11-20 12:45:03,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:45:03,030 INFO L495 AbstractCegarLoop]: Abstraction has 2531 states and 3458 transitions. [2022-11-20 12:45:03,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2022-11-20 12:45:03,031 INFO L276 IsEmpty]: Start isEmpty. Operand 2531 states and 3458 transitions. [2022-11-20 12:45:03,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-20 12:45:03,033 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:45:03,033 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:45:03,059 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e372919e-ad62-45ab-8331-903d008871db/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 12:45:03,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e372919e-ad62-45ab-8331-903d008871db/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 12:45:03,259 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:45:03,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:45:03,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1079562182, now seen corresponding path program 1 times [2022-11-20 12:45:03,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:45:03,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1103594788] [2022-11-20 12:45:03,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:45:03,262 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 12:45:03,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e372919e-ad62-45ab-8331-903d008871db/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:45:03,263 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e372919e-ad62-45ab-8331-903d008871db/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 12:45:03,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e372919e-ad62-45ab-8331-903d008871db/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 12:45:04,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:45:04,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 855 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:45:04,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:45:04,414 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2022-11-20 12:45:04,414 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:45:04,414 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:45:04,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1103594788] [2022-11-20 12:45:04,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1103594788] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:45:04,415 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:45:04,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:45:04,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713072473] [2022-11-20 12:45:04,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:45:04,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:45:04,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:45:04,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:45:04,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:45:04,417 INFO L87 Difference]: Start difference. First operand 2531 states and 3458 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2022-11-20 12:45:04,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:45:04,717 INFO L93 Difference]: Finished difference Result 2533 states and 3459 transitions. [2022-11-20 12:45:04,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:45:04,717 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 97 [2022-11-20 12:45:04,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:45:04,731 INFO L225 Difference]: With dead ends: 2533 [2022-11-20 12:45:04,732 INFO L226 Difference]: Without dead ends: 2521 [2022-11-20 12:45:04,735 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 95 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 12:45:04,738 INFO L413 NwaCegarLoop]: 904 mSDtfsCounter, 843 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 843 SdHoareTripleChecker+Valid, 904 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 12:45:04,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [843 Valid, 904 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:45:04,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2521 states. [2022-11-20 12:45:05,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2521 to 2521. [2022-11-20 12:45:05,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2521 states, 1872 states have (on average 1.3263888888888888) internal successors, (2483), 1924 states have internal predecessors, (2483), 476 states have call successors, (476), 173 states have call predecessors, (476), 172 states have return successors, (485), 471 states have call predecessors, (485), 475 states have call successors, (485) [2022-11-20 12:45:05,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2521 states to 2521 states and 3444 transitions. [2022-11-20 12:45:05,040 INFO L78 Accepts]: Start accepts. Automaton has 2521 states and 3444 transitions. Word has length 97 [2022-11-20 12:45:05,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:45:05,041 INFO L495 AbstractCegarLoop]: Abstraction has 2521 states and 3444 transitions. [2022-11-20 12:45:05,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2022-11-20 12:45:05,042 INFO L276 IsEmpty]: Start isEmpty. Operand 2521 states and 3444 transitions. [2022-11-20 12:45:05,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-11-20 12:45:05,046 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:45:05,046 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 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] [2022-11-20 12:45:05,079 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e372919e-ad62-45ab-8331-903d008871db/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 12:45:05,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e372919e-ad62-45ab-8331-903d008871db/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 12:45:05,262 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:45:05,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:45:05,263 INFO L85 PathProgramCache]: Analyzing trace with hash -418987701, now seen corresponding path program 1 times [2022-11-20 12:45:05,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:45:05,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1141223839] [2022-11-20 12:45:05,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:45:05,264 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 12:45:05,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e372919e-ad62-45ab-8331-903d008871db/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:45:05,265 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e372919e-ad62-45ab-8331-903d008871db/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 12:45:05,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e372919e-ad62-45ab-8331-903d008871db/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 12:45:06,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:45:06,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 1050 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:45:06,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:45:06,207 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2022-11-20 12:45:06,208 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:45:06,208 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:45:06,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1141223839] [2022-11-20 12:45:06,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1141223839] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:45:06,209 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:45:06,209 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:45:06,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958947845] [2022-11-20 12:45:06,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:45:06,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:45:06,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:45:06,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:45:06,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:45:06,211 INFO L87 Difference]: Start difference. First operand 2521 states and 3444 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-20 12:45:06,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:45:06,792 INFO L93 Difference]: Finished difference Result 5898 states and 7997 transitions. [2022-11-20 12:45:06,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:45:06,792 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 142 [2022-11-20 12:45:06,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:45:06,812 INFO L225 Difference]: With dead ends: 5898 [2022-11-20 12:45:06,812 INFO L226 Difference]: Without dead ends: 3402 [2022-11-20 12:45:06,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 140 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 12:45:06,820 INFO L413 NwaCegarLoop]: 962 mSDtfsCounter, 327 mSDsluCounter, 846 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 1808 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:45:06,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [327 Valid, 1808 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:45:06,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3402 states. [2022-11-20 12:45:07,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3402 to 3394. [2022-11-20 12:45:07,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3394 states, 2525 states have (on average 1.3144554455445545) internal successors, (3319), 2585 states have internal predecessors, (3319), 625 states have call successors, (625), 244 states have call predecessors, (625), 243 states have return successors, (634), 620 states have call predecessors, (634), 624 states have call successors, (634) [2022-11-20 12:45:07,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3394 states to 3394 states and 4578 transitions. [2022-11-20 12:45:07,229 INFO L78 Accepts]: Start accepts. Automaton has 3394 states and 4578 transitions. Word has length 142 [2022-11-20 12:45:07,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:45:07,229 INFO L495 AbstractCegarLoop]: Abstraction has 3394 states and 4578 transitions. [2022-11-20 12:45:07,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-20 12:45:07,230 INFO L276 IsEmpty]: Start isEmpty. Operand 3394 states and 4578 transitions. [2022-11-20 12:45:07,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-11-20 12:45:07,235 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:45:07,235 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 3, 3, 3, 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] [2022-11-20 12:45:07,268 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e372919e-ad62-45ab-8331-903d008871db/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 12:45:07,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e372919e-ad62-45ab-8331-903d008871db/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 12:45:07,459 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:45:07,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:45:07,459 INFO L85 PathProgramCache]: Analyzing trace with hash 1708712747, now seen corresponding path program 1 times [2022-11-20 12:45:07,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:45:07,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1493436984] [2022-11-20 12:45:07,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:45:07,461 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 12:45:07,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e372919e-ad62-45ab-8331-903d008871db/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:45:07,464 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e372919e-ad62-45ab-8331-903d008871db/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 12:45:07,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e372919e-ad62-45ab-8331-903d008871db/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 12:45:08,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:45:08,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 1097 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:45:08,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:45:08,504 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2022-11-20 12:45:08,505 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:45:08,505 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:45:08,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1493436984] [2022-11-20 12:45:08,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1493436984] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:45:08,506 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:45:08,506 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:45:08,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928103983] [2022-11-20 12:45:08,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:45:08,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:45:08,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:45:08,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:45:08,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:45:08,508 INFO L87 Difference]: Start difference. First operand 3394 states and 4578 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-20 12:45:09,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:45:09,220 INFO L93 Difference]: Finished difference Result 7678 states and 10337 transitions. [2022-11-20 12:45:09,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:45:09,221 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 159 [2022-11-20 12:45:09,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:45:09,241 INFO L225 Difference]: With dead ends: 7678 [2022-11-20 12:45:09,242 INFO L226 Difference]: Without dead ends: 4316 [2022-11-20 12:45:09,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 157 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 12:45:09,251 INFO L413 NwaCegarLoop]: 1191 mSDtfsCounter, 304 mSDsluCounter, 874 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 2065 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:45:09,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [304 Valid, 2065 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 12:45:09,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4316 states. [2022-11-20 12:45:09,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4316 to 4308. [2022-11-20 12:45:09,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4308 states, 3221 states have (on average 1.3092207389009625) internal successors, (4217), 3289 states have internal predecessors, (4217), 773 states have call successors, (773), 314 states have call predecessors, (773), 313 states have return successors, (782), 768 states have call predecessors, (782), 772 states have call successors, (782) [2022-11-20 12:45:09,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4308 states to 4308 states and 5772 transitions. [2022-11-20 12:45:09,786 INFO L78 Accepts]: Start accepts. Automaton has 4308 states and 5772 transitions. Word has length 159 [2022-11-20 12:45:09,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:45:09,787 INFO L495 AbstractCegarLoop]: Abstraction has 4308 states and 5772 transitions. [2022-11-20 12:45:09,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-20 12:45:09,788 INFO L276 IsEmpty]: Start isEmpty. Operand 4308 states and 5772 transitions. [2022-11-20 12:45:09,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2022-11-20 12:45:09,796 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:45:09,796 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 4, 4, 4, 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] [2022-11-20 12:45:09,824 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e372919e-ad62-45ab-8331-903d008871db/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 12:45:10,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e372919e-ad62-45ab-8331-903d008871db/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 12:45:10,011 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:45:10,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:45:10,012 INFO L85 PathProgramCache]: Analyzing trace with hash -1658519378, now seen corresponding path program 1 times [2022-11-20 12:45:10,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:45:10,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1555927953] [2022-11-20 12:45:10,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:45:10,013 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 12:45:10,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e372919e-ad62-45ab-8331-903d008871db/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:45:10,016 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e372919e-ad62-45ab-8331-903d008871db/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 12:45:10,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e372919e-ad62-45ab-8331-903d008871db/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 12:45:10,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:45:11,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 1124 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:45:11,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:45:11,095 INFO L134 CoverageAnalysis]: Checked inductivity of 344 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked. [2022-11-20 12:45:11,095 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:45:11,095 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:45:11,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1555927953] [2022-11-20 12:45:11,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1555927953] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:45:11,096 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:45:11,096 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:45:11,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105225110] [2022-11-20 12:45:11,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:45:11,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:45:11,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:45:11,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:45:11,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:45:11,098 INFO L87 Difference]: Start difference. First operand 4308 states and 5772 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-20 12:45:12,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:45:12,029 INFO L93 Difference]: Finished difference Result 10362 states and 13819 transitions. [2022-11-20 12:45:12,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:45:12,030 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 173 [2022-11-20 12:45:12,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:45:12,066 INFO L225 Difference]: With dead ends: 10362 [2022-11-20 12:45:12,066 INFO L226 Difference]: Without dead ends: 6086 [2022-11-20 12:45:12,080 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 171 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 12:45:12,081 INFO L413 NwaCegarLoop]: 1459 mSDtfsCounter, 673 mSDsluCounter, 787 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 673 SdHoareTripleChecker+Valid, 2246 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:45:12,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [673 Valid, 2246 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 12:45:12,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6086 states. [2022-11-20 12:45:12,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6086 to 6078. [2022-11-20 12:45:12,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6078 states, 4565 states have (on average 1.3093099671412924) internal successors, (5977), 4661 states have internal predecessors, (5977), 1037 states have call successors, (1037), 476 states have call predecessors, (1037), 475 states have return successors, (1046), 1028 states have call predecessors, (1046), 1036 states have call successors, (1046) [2022-11-20 12:45:12,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6078 states to 6078 states and 8060 transitions. [2022-11-20 12:45:12,972 INFO L78 Accepts]: Start accepts. Automaton has 6078 states and 8060 transitions. Word has length 173 [2022-11-20 12:45:12,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:45:12,973 INFO L495 AbstractCegarLoop]: Abstraction has 6078 states and 8060 transitions. [2022-11-20 12:45:12,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-20 12:45:12,974 INFO L276 IsEmpty]: Start isEmpty. Operand 6078 states and 8060 transitions. [2022-11-20 12:45:12,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2022-11-20 12:45:12,982 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:45:12,982 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 5, 5, 5, 3, 3, 3, 3, 3, 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] [2022-11-20 12:45:13,019 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e372919e-ad62-45ab-8331-903d008871db/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 12:45:13,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e372919e-ad62-45ab-8331-903d008871db/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 12:45:13,199 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:45:13,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:45:13,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1212811635, now seen corresponding path program 1 times [2022-11-20 12:45:13,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:45:13,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2064449362] [2022-11-20 12:45:13,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:45:13,200 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 12:45:13,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e372919e-ad62-45ab-8331-903d008871db/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:45:13,201 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e372919e-ad62-45ab-8331-903d008871db/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 12:45:13,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e372919e-ad62-45ab-8331-903d008871db/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 12:45:14,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:45:14,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 1171 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 12:45:14,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:45:14,270 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2022-11-20 12:45:14,270 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:45:14,271 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:45:14,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2064449362] [2022-11-20 12:45:14,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2064449362] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:45:14,271 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:45:14,272 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:45:14,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380661333] [2022-11-20 12:45:14,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:45:14,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:45:14,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:45:14,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:45:14,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:45:14,274 INFO L87 Difference]: Start difference. First operand 6078 states and 8060 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-20 12:45:15,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:45:15,873 INFO L93 Difference]: Finished difference Result 16164 states and 21601 transitions. [2022-11-20 12:45:15,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:45:15,874 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 192 [2022-11-20 12:45:15,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:45:15,935 INFO L225 Difference]: With dead ends: 16164 [2022-11-20 12:45:15,935 INFO L226 Difference]: Without dead ends: 10118 [2022-11-20 12:45:15,952 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:45:15,953 INFO L413 NwaCegarLoop]: 1599 mSDtfsCounter, 1053 mSDsluCounter, 2481 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1053 SdHoareTripleChecker+Valid, 4080 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:45:15,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1053 Valid, 4080 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 12:45:15,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10118 states. [2022-11-20 12:45:17,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10118 to 6086. [2022-11-20 12:45:17,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6086 states, 4573 states have (on average 1.308768860704133) internal successors, (5985), 4669 states have internal predecessors, (5985), 1037 states have call successors, (1037), 476 states have call predecessors, (1037), 475 states have return successors, (1046), 1028 states have call predecessors, (1046), 1036 states have call successors, (1046) [2022-11-20 12:45:17,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6086 states to 6086 states and 8068 transitions. [2022-11-20 12:45:17,097 INFO L78 Accepts]: Start accepts. Automaton has 6086 states and 8068 transitions. Word has length 192 [2022-11-20 12:45:17,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:45:17,098 INFO L495 AbstractCegarLoop]: Abstraction has 6086 states and 8068 transitions. [2022-11-20 12:45:17,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-20 12:45:17,099 INFO L276 IsEmpty]: Start isEmpty. Operand 6086 states and 8068 transitions. [2022-11-20 12:45:17,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2022-11-20 12:45:17,108 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:45:17,108 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 4, 4, 4, 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] [2022-11-20 12:45:17,141 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e372919e-ad62-45ab-8331-903d008871db/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 12:45:17,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e372919e-ad62-45ab-8331-903d008871db/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 12:45:17,333 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:45:17,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:45:17,333 INFO L85 PathProgramCache]: Analyzing trace with hash -1575801982, now seen corresponding path program 1 times [2022-11-20 12:45:17,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:45:17,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [516982339] [2022-11-20 12:45:17,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:45:17,335 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 12:45:17,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e372919e-ad62-45ab-8331-903d008871db/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:45:17,337 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e372919e-ad62-45ab-8331-903d008871db/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 12:45:17,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e372919e-ad62-45ab-8331-903d008871db/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 12:45:18,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:45:18,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 1236 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 12:45:18,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:45:18,843 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 329 trivial. 0 not checked. [2022-11-20 12:45:18,843 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:45:18,844 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:45:18,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [516982339] [2022-11-20 12:45:18,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [516982339] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:45:18,844 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:45:18,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 12:45:18,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658001183] [2022-11-20 12:45:18,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:45:18,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:45:18,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:45:18,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:45:18,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:45:18,847 INFO L87 Difference]: Start difference. First operand 6086 states and 8068 transitions. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 6 states have internal predecessors, (118), 2 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (24), 4 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-20 12:45:20,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:45:20,397 INFO L93 Difference]: Finished difference Result 14762 states and 20199 transitions. [2022-11-20 12:45:20,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 12:45:20,398 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 6 states have internal predecessors, (118), 2 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (24), 4 states have call predecessors, (24), 2 states have call successors, (24) Word has length 214 [2022-11-20 12:45:20,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:45:20,431 INFO L225 Difference]: With dead ends: 14762 [2022-11-20 12:45:20,432 INFO L226 Difference]: Without dead ends: 8708 [2022-11-20 12:45:20,450 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:45:20,451 INFO L413 NwaCegarLoop]: 1299 mSDtfsCounter, 281 mSDsluCounter, 7416 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 8715 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:45:20,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [343 Valid, 8715 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 12:45:20,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8708 states. [2022-11-20 12:45:21,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8708 to 6118. [2022-11-20 12:45:21,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6118 states, 4597 states have (on average 1.3071568414183163) internal successors, (6009), 4693 states have internal predecessors, (6009), 1037 states have call successors, (1037), 476 states have call predecessors, (1037), 483 states have return successors, (1086), 1036 states have call predecessors, (1086), 1036 states have call successors, (1086) [2022-11-20 12:45:21,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6118 states to 6118 states and 8132 transitions. [2022-11-20 12:45:21,381 INFO L78 Accepts]: Start accepts. Automaton has 6118 states and 8132 transitions. Word has length 214 [2022-11-20 12:45:21,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:45:21,382 INFO L495 AbstractCegarLoop]: Abstraction has 6118 states and 8132 transitions. [2022-11-20 12:45:21,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 6 states have internal predecessors, (118), 2 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (24), 4 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-20 12:45:21,383 INFO L276 IsEmpty]: Start isEmpty. Operand 6118 states and 8132 transitions. [2022-11-20 12:45:21,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2022-11-20 12:45:21,393 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:45:21,393 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 4, 4, 4, 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] [2022-11-20 12:45:21,431 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e372919e-ad62-45ab-8331-903d008871db/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)] Forceful destruction successful, exit code 0 [2022-11-20 12:45:21,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e372919e-ad62-45ab-8331-903d008871db/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 12:45:21,619 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:45:21,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:45:21,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1683768680, now seen corresponding path program 1 times [2022-11-20 12:45:21,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:45:21,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [761586884] [2022-11-20 12:45:21,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:45:21,621 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 12:45:21,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e372919e-ad62-45ab-8331-903d008871db/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:45:21,622 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e372919e-ad62-45ab-8331-903d008871db/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 12:45:21,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e372919e-ad62-45ab-8331-903d008871db/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 12:45:22,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:45:22,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 1253 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:45:22,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:45:22,675 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 329 trivial. 0 not checked. [2022-11-20 12:45:22,675 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:45:22,675 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:45:22,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [761586884] [2022-11-20 12:45:22,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [761586884] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:45:22,676 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:45:22,676 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:45:22,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208581780] [2022-11-20 12:45:22,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:45:22,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:45:22,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:45:22,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:45:22,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:45:22,678 INFO L87 Difference]: Start difference. First operand 6118 states and 8132 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-20 12:45:23,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:45:23,864 INFO L93 Difference]: Finished difference Result 12212 states and 16232 transitions. [2022-11-20 12:45:23,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:45:23,867 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 220 [2022-11-20 12:45:23,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:45:23,892 INFO L225 Difference]: With dead ends: 12212 [2022-11-20 12:45:23,892 INFO L226 Difference]: Without dead ends: 6126 [2022-11-20 12:45:23,911 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 218 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 12:45:23,912 INFO L413 NwaCegarLoop]: 898 mSDtfsCounter, 1 mSDsluCounter, 895 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1793 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:45:23,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1793 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:45:23,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6126 states. [2022-11-20 12:45:24,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6126 to 6122. [2022-11-20 12:45:24,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6122 states, 4601 states have (on average 1.3068898065637904) internal successors, (6013), 4697 states have internal predecessors, (6013), 1037 states have call successors, (1037), 476 states have call predecessors, (1037), 483 states have return successors, (1086), 1036 states have call predecessors, (1086), 1036 states have call successors, (1086) [2022-11-20 12:45:24,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6122 states to 6122 states and 8136 transitions. [2022-11-20 12:45:24,764 INFO L78 Accepts]: Start accepts. Automaton has 6122 states and 8136 transitions. Word has length 220 [2022-11-20 12:45:24,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:45:24,765 INFO L495 AbstractCegarLoop]: Abstraction has 6122 states and 8136 transitions. [2022-11-20 12:45:24,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-20 12:45:24,766 INFO L276 IsEmpty]: Start isEmpty. Operand 6122 states and 8136 transitions. [2022-11-20 12:45:24,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2022-11-20 12:45:24,777 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:45:24,777 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 4, 4, 4, 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] [2022-11-20 12:45:24,811 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e372919e-ad62-45ab-8331-903d008871db/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 12:45:24,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e372919e-ad62-45ab-8331-903d008871db/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 12:45:24,991 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:45:24,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:45:24,991 INFO L85 PathProgramCache]: Analyzing trace with hash -1349462172, now seen corresponding path program 1 times [2022-11-20 12:45:24,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:45:24,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [164939583] [2022-11-20 12:45:24,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:45:24,993 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 12:45:24,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e372919e-ad62-45ab-8331-903d008871db/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:45:24,994 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e372919e-ad62-45ab-8331-903d008871db/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 12:45:25,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e372919e-ad62-45ab-8331-903d008871db/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 12:45:26,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:45:26,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 1273 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 12:45:26,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:45:26,196 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 329 trivial. 0 not checked. [2022-11-20 12:45:26,196 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:45:26,392 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2022-11-20 12:45:26,392 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:45:26,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [164939583] [2022-11-20 12:45:26,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [164939583] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:45:26,393 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:45:26,393 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-11-20 12:45:26,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890784820] [2022-11-20 12:45:26,394 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:45:26,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:45:26,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:45:26,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:45:26,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:45:26,396 INFO L87 Difference]: Start difference. First operand 6122 states and 8136 transitions. Second operand has 6 states, 6 states have (on average 25.0) internal successors, (150), 6 states have internal predecessors, (150), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2022-11-20 12:45:27,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:45:27,476 INFO L93 Difference]: Finished difference Result 12236 states and 16264 transitions. [2022-11-20 12:45:27,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:45:27,480 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.0) internal successors, (150), 6 states have internal predecessors, (150), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 222 [2022-11-20 12:45:27,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:45:27,506 INFO L225 Difference]: With dead ends: 12236 [2022-11-20 12:45:27,506 INFO L226 Difference]: Without dead ends: 6146 [2022-11-20 12:45:27,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 443 GetRequests, 438 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:45:27,526 INFO L413 NwaCegarLoop]: 898 mSDtfsCounter, 4 mSDsluCounter, 2685 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 3583 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:45:27,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 3583 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 12:45:27,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6146 states. [2022-11-20 12:45:28,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6146 to 6146. [2022-11-20 12:45:28,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6146 states, 4625 states have (on average 1.3052972972972974) internal successors, (6037), 4721 states have internal predecessors, (6037), 1037 states have call successors, (1037), 476 states have call predecessors, (1037), 483 states have return successors, (1086), 1036 states have call predecessors, (1086), 1036 states have call successors, (1086) [2022-11-20 12:45:28,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6146 states to 6146 states and 8160 transitions. [2022-11-20 12:45:28,436 INFO L78 Accepts]: Start accepts. Automaton has 6146 states and 8160 transitions. Word has length 222 [2022-11-20 12:45:28,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:45:28,437 INFO L495 AbstractCegarLoop]: Abstraction has 6146 states and 8160 transitions. [2022-11-20 12:45:28,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.0) internal successors, (150), 6 states have internal predecessors, (150), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2022-11-20 12:45:28,438 INFO L276 IsEmpty]: Start isEmpty. Operand 6146 states and 8160 transitions. [2022-11-20 12:45:28,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2022-11-20 12:45:28,448 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:45:28,448 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 5, 5, 5, 3, 3, 3, 3, 3, 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] [2022-11-20 12:45:28,485 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e372919e-ad62-45ab-8331-903d008871db/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 12:45:28,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e372919e-ad62-45ab-8331-903d008871db/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 12:45:28,666 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:45:28,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:45:28,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1124699230, now seen corresponding path program 1 times [2022-11-20 12:45:28,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:45:28,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2105828710] [2022-11-20 12:45:28,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:45:28,668 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 12:45:28,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e372919e-ad62-45ab-8331-903d008871db/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:45:28,669 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e372919e-ad62-45ab-8331-903d008871db/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 12:45:28,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e372919e-ad62-45ab-8331-903d008871db/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 12:45:29,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:45:30,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 1259 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-20 12:45:30,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:45:30,373 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2022-11-20 12:45:30,373 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:45:30,373 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:45:30,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2105828710] [2022-11-20 12:45:30,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2105828710] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:45:30,374 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:45:30,374 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 12:45:30,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923247030] [2022-11-20 12:45:30,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:45:30,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 12:45:30,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:45:30,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 12:45:30,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:45:30,376 INFO L87 Difference]: Start difference. First operand 6146 states and 8160 transitions. Second operand has 9 states, 9 states have (on average 14.0) internal successors, (126), 7 states have internal predecessors, (126), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (24), 5 states have call predecessors, (24), 3 states have call successors, (24) [2022-11-20 12:45:34,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:45:34,038 INFO L93 Difference]: Finished difference Result 14850 states and 20315 transitions. [2022-11-20 12:45:34,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 12:45:34,039 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 14.0) internal successors, (126), 7 states have internal predecessors, (126), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (24), 5 states have call predecessors, (24), 3 states have call successors, (24) Word has length 225 [2022-11-20 12:45:34,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:45:34,081 INFO L225 Difference]: With dead ends: 14850 [2022-11-20 12:45:34,082 INFO L226 Difference]: Without dead ends: 8736 [2022-11-20 12:45:34,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-20 12:45:34,100 INFO L413 NwaCegarLoop]: 1166 mSDtfsCounter, 322 mSDsluCounter, 7826 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 392 SdHoareTripleChecker+Valid, 8992 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-20 12:45:34,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [392 Valid, 8992 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-20 12:45:34,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8736 states. [2022-11-20 12:45:35,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8736 to 6146. [2022-11-20 12:45:35,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6146 states, 4625 states have (on average 1.3044324324324323) internal successors, (6033), 4721 states have internal predecessors, (6033), 1037 states have call successors, (1037), 476 states have call predecessors, (1037), 483 states have return successors, (1086), 1036 states have call predecessors, (1086), 1036 states have call successors, (1086) [2022-11-20 12:45:35,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6146 states to 6146 states and 8156 transitions. [2022-11-20 12:45:35,044 INFO L78 Accepts]: Start accepts. Automaton has 6146 states and 8156 transitions. Word has length 225 [2022-11-20 12:45:35,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:45:35,044 INFO L495 AbstractCegarLoop]: Abstraction has 6146 states and 8156 transitions. [2022-11-20 12:45:35,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.0) internal successors, (126), 7 states have internal predecessors, (126), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (24), 5 states have call predecessors, (24), 3 states have call successors, (24) [2022-11-20 12:45:35,045 INFO L276 IsEmpty]: Start isEmpty. Operand 6146 states and 8156 transitions. [2022-11-20 12:45:35,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2022-11-20 12:45:35,056 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:45:35,057 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 5, 5, 5, 3, 3, 3, 3, 3, 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] [2022-11-20 12:45:35,094 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e372919e-ad62-45ab-8331-903d008871db/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 12:45:35,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e372919e-ad62-45ab-8331-903d008871db/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 12:45:35,285 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:45:35,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:45:35,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1207782856, now seen corresponding path program 1 times [2022-11-20 12:45:35,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:45:35,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [903480096] [2022-11-20 12:45:35,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:45:35,287 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 12:45:35,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e372919e-ad62-45ab-8331-903d008871db/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:45:35,289 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e372919e-ad62-45ab-8331-903d008871db/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 12:45:35,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e372919e-ad62-45ab-8331-903d008871db/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 12:45:36,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:45:36,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 1242 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 12:45:36,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:45:36,602 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2022-11-20 12:45:36,602 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:45:36,602 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:45:36,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [903480096] [2022-11-20 12:45:36,603 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [903480096] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:45:36,603 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:45:36,603 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:45:36,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720430726] [2022-11-20 12:45:36,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:45:36,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 12:45:36,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:45:36,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 12:45:36,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:45:36,609 INFO L87 Difference]: Start difference. First operand 6146 states and 8156 transitions. Second operand has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 4 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2022-11-20 12:45:38,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:45:38,960 INFO L93 Difference]: Finished difference Result 16452 states and 22037 transitions. [2022-11-20 12:45:38,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 12:45:38,960 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 4 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) Word has length 219 [2022-11-20 12:45:38,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:45:38,994 INFO L225 Difference]: With dead ends: 16452 [2022-11-20 12:45:38,995 INFO L226 Difference]: Without dead ends: 10338 [2022-11-20 12:45:39,010 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-11-20 12:45:39,011 INFO L413 NwaCegarLoop]: 1601 mSDtfsCounter, 1719 mSDsluCounter, 7069 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 188 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1719 SdHoareTripleChecker+Valid, 8670 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 188 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-20 12:45:39,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1719 Valid, 8670 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [188 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-20 12:45:39,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10338 states. [2022-11-20 12:45:40,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10338 to 6178. [2022-11-20 12:45:40,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6178 states, 4649 states have (on average 1.3028608302860831) internal successors, (6057), 4745 states have internal predecessors, (6057), 1045 states have call successors, (1045), 476 states have call predecessors, (1045), 483 states have return successors, (1094), 1044 states have call predecessors, (1094), 1044 states have call successors, (1094) [2022-11-20 12:45:40,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6178 states to 6178 states and 8196 transitions. [2022-11-20 12:45:40,042 INFO L78 Accepts]: Start accepts. Automaton has 6178 states and 8196 transitions. Word has length 219 [2022-11-20 12:45:40,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:45:40,043 INFO L495 AbstractCegarLoop]: Abstraction has 6178 states and 8196 transitions. [2022-11-20 12:45:40,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 4 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2022-11-20 12:45:40,043 INFO L276 IsEmpty]: Start isEmpty. Operand 6178 states and 8196 transitions. [2022-11-20 12:45:40,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2022-11-20 12:45:40,051 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:45:40,052 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 4, 4, 4, 4, 4, 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] [2022-11-20 12:45:40,087 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e372919e-ad62-45ab-8331-903d008871db/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 12:45:40,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e372919e-ad62-45ab-8331-903d008871db/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 12:45:40,267 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:45:40,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:45:40,268 INFO L85 PathProgramCache]: Analyzing trace with hash 682767192, now seen corresponding path program 2 times [2022-11-20 12:45:40,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:45:40,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [500831226] [2022-11-20 12:45:40,270 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:45:40,270 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 12:45:40,271 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e372919e-ad62-45ab-8331-903d008871db/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:45:40,272 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e372919e-ad62-45ab-8331-903d008871db/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 12:45:40,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e372919e-ad62-45ab-8331-903d008871db/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 12:45:41,708 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:45:41,708 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:45:41,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 1333 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 12:45:41,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:45:42,417 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 88 proven. 23 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2022-11-20 12:45:42,418 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:45:42,926 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 340 trivial. 0 not checked. [2022-11-20 12:45:42,927 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:45:42,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [500831226] [2022-11-20 12:45:42,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [500831226] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:45:42,927 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:45:42,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-11-20 12:45:42,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467600371] [2022-11-20 12:45:42,928 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:45:42,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:45:42,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:45:42,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:45:42,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:45:42,930 INFO L87 Difference]: Start difference. First operand 6178 states and 8196 transitions. Second operand has 6 states, 6 states have (on average 39.166666666666664) internal successors, (235), 6 states have internal predecessors, (235), 6 states have call successors, (40), 4 states have call predecessors, (40), 3 states have return successors, (39), 5 states have call predecessors, (39), 5 states have call successors, (39) [2022-11-20 12:45:54,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:45:54,970 INFO L93 Difference]: Finished difference Result 36901 states and 48948 transitions. [2022-11-20 12:45:54,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:45:54,971 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 39.166666666666664) internal successors, (235), 6 states have internal predecessors, (235), 6 states have call successors, (40), 4 states have call predecessors, (40), 3 states have return successors, (39), 5 states have call predecessors, (39), 5 states have call successors, (39) Word has length 228 [2022-11-20 12:45:54,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:45:55,111 INFO L225 Difference]: With dead ends: 36901 [2022-11-20 12:45:55,111 INFO L226 Difference]: Without dead ends: 36893 [2022-11-20 12:45:55,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 456 GetRequests, 451 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:45:55,123 INFO L413 NwaCegarLoop]: 2217 mSDtfsCounter, 5061 mSDsluCounter, 3955 mSDsCounter, 0 mSdLazyCounter, 1847 mSolverCounterSat, 734 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5061 SdHoareTripleChecker+Valid, 6172 SdHoareTripleChecker+Invalid, 2581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 734 IncrementalHoareTripleChecker+Valid, 1847 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:45:55,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5061 Valid, 6172 Invalid, 2581 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [734 Valid, 1847 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2022-11-20 12:45:55,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36893 states. [2022-11-20 12:46:00,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36893 to 36820. [2022-11-20 12:46:00,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36820 states, 27721 states have (on average 1.3041376573716676) internal successors, (36152), 28329 states have internal predecessors, (36152), 6205 states have call successors, (6205), 2846 states have call predecessors, (6205), 2893 states have return successors, (6504), 6172 states have call predecessors, (6504), 6204 states have call successors, (6504) [2022-11-20 12:46:00,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36820 states to 36820 states and 48861 transitions. [2022-11-20 12:46:00,401 INFO L78 Accepts]: Start accepts. Automaton has 36820 states and 48861 transitions. Word has length 228 [2022-11-20 12:46:00,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:46:00,402 INFO L495 AbstractCegarLoop]: Abstraction has 36820 states and 48861 transitions. [2022-11-20 12:46:00,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 39.166666666666664) internal successors, (235), 6 states have internal predecessors, (235), 6 states have call successors, (40), 4 states have call predecessors, (40), 3 states have return successors, (39), 5 states have call predecessors, (39), 5 states have call successors, (39) [2022-11-20 12:46:00,402 INFO L276 IsEmpty]: Start isEmpty. Operand 36820 states and 48861 transitions. [2022-11-20 12:46:00,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2022-11-20 12:46:00,448 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:46:00,448 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 4, 4, 4, 4, 4, 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] [2022-11-20 12:46:00,489 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e372919e-ad62-45ab-8331-903d008871db/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 12:46:00,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e372919e-ad62-45ab-8331-903d008871db/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 12:46:00,663 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:46:00,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:46:00,664 INFO L85 PathProgramCache]: Analyzing trace with hash -979892708, now seen corresponding path program 1 times [2022-11-20 12:46:00,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:46:00,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1522219888] [2022-11-20 12:46:00,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:46:00,666 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 12:46:00,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e372919e-ad62-45ab-8331-903d008871db/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:46:00,667 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e372919e-ad62-45ab-8331-903d008871db/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 12:46:00,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e372919e-ad62-45ab-8331-903d008871db/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 12:46:01,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:46:01,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 1377 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 12:46:01,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:46:02,066 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 80 proven. 16 refuted. 0 times theorem prover too weak. 329 trivial. 0 not checked. [2022-11-20 12:46:02,067 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:46:02,425 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 24 proven. 16 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2022-11-20 12:46:02,425 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:46:02,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1522219888] [2022-11-20 12:46:02,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1522219888] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:46:02,427 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:46:02,427 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-11-20 12:46:02,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270390053] [2022-11-20 12:46:02,427 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:46:02,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 12:46:02,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:46:02,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 12:46:02,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-11-20 12:46:02,430 INFO L87 Difference]: Start difference. First operand 36820 states and 48861 transitions. Second operand has 12 states, 12 states have (on average 14.166666666666666) internal successors, (170), 12 states have internal predecessors, (170), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2022-11-20 12:46:08,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:46:08,683 INFO L93 Difference]: Finished difference Result 73896 states and 98110 transitions. [2022-11-20 12:46:08,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 12:46:08,686 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 14.166666666666666) internal successors, (170), 12 states have internal predecessors, (170), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) Word has length 238 [2022-11-20 12:46:08,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:46:08,833 INFO L225 Difference]: With dead ends: 73896 [2022-11-20 12:46:08,834 INFO L226 Difference]: Without dead ends: 37108 [2022-11-20 12:46:09,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 478 GetRequests, 464 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2022-11-20 12:46:09,045 INFO L413 NwaCegarLoop]: 898 mSDtfsCounter, 11 mSDsluCounter, 4475 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 5373 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:46:09,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 5373 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-20 12:46:09,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37108 states. [2022-11-20 12:46:16,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37108 to 37108. [2022-11-20 12:46:16,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37108 states, 28009 states have (on average 1.301010389517655) internal successors, (36440), 28617 states have internal predecessors, (36440), 6205 states have call successors, (6205), 2846 states have call predecessors, (6205), 2893 states have return successors, (6504), 6172 states have call predecessors, (6504), 6204 states have call successors, (6504) [2022-11-20 12:46:16,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37108 states to 37108 states and 49149 transitions. [2022-11-20 12:46:16,196 INFO L78 Accepts]: Start accepts. Automaton has 37108 states and 49149 transitions. Word has length 238 [2022-11-20 12:46:16,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:46:16,197 INFO L495 AbstractCegarLoop]: Abstraction has 37108 states and 49149 transitions. [2022-11-20 12:46:16,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 14.166666666666666) internal successors, (170), 12 states have internal predecessors, (170), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2022-11-20 12:46:16,198 INFO L276 IsEmpty]: Start isEmpty. Operand 37108 states and 49149 transitions. [2022-11-20 12:46:16,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2022-11-20 12:46:16,230 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:46:16,231 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 10, 10, 4, 4, 4, 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] [2022-11-20 12:46:16,270 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e372919e-ad62-45ab-8331-903d008871db/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 12:46:16,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e372919e-ad62-45ab-8331-903d008871db/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 12:46:16,457 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:46:16,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:46:16,457 INFO L85 PathProgramCache]: Analyzing trace with hash -206821628, now seen corresponding path program 2 times [2022-11-20 12:46:16,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:46:16,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1819519719] [2022-11-20 12:46:16,459 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:46:16,459 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 12:46:16,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e372919e-ad62-45ab-8331-903d008871db/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:46:16,461 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e372919e-ad62-45ab-8331-903d008871db/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 12:46:16,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e372919e-ad62-45ab-8331-903d008871db/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 12:46:18,037 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:46:18,037 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:46:18,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 1497 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-20 12:46:18,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:46:18,501 INFO L134 CoverageAnalysis]: Checked inductivity of 509 backedges. 80 proven. 100 refuted. 0 times theorem prover too weak. 329 trivial. 0 not checked. [2022-11-20 12:46:18,501 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:46:19,450 INFO L134 CoverageAnalysis]: Checked inductivity of 509 backedges. 24 proven. 100 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2022-11-20 12:46:19,450 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:46:19,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1819519719] [2022-11-20 12:46:19,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1819519719] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:46:19,451 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:46:19,451 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2022-11-20 12:46:19,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373099605] [2022-11-20 12:46:19,454 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:46:19,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-20 12:46:19,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:46:19,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-20 12:46:19,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2022-11-20 12:46:19,456 INFO L87 Difference]: Start difference. First operand 37108 states and 49149 transitions. Second operand has 24 states, 24 states have (on average 8.083333333333334) internal successors, (194), 24 states have internal predecessors, (194), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35)