./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-validator-v0.6/linux-torvalds-645ef9e-32_7a-sound--oss--sound.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_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-validator-v0.6/linux-torvalds-645ef9e-32_7a-sound--oss--sound.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash fa2b7015249343fdf8056852ea29542152fe4e2fe5328579e80867d2e6b2b327 --- 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 20:45:46,477 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 20:45:46,479 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 20:45:46,521 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 20:45:46,522 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 20:45:46,526 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 20:45:46,528 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 20:45:46,531 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 20:45:46,533 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 20:45:46,538 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 20:45:46,540 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 20:45:46,542 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 20:45:46,543 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 20:45:46,545 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 20:45:46,547 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 20:45:46,549 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 20:45:46,551 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 20:45:46,551 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 20:45:46,553 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 20:45:46,559 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 20:45:46,561 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 20:45:46,563 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 20:45:46,564 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 20:45:46,565 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 20:45:46,575 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 20:45:46,576 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 20:45:46,576 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 20:45:46,579 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 20:45:46,579 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 20:45:46,580 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 20:45:46,580 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 20:45:46,582 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 20:45:46,584 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 20:45:46,585 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 20:45:46,586 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 20:45:46,586 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 20:45:46,587 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 20:45:46,587 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 20:45:46,588 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 20:45:46,588 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 20:45:46,589 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 20:45:46,590 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-20 20:45:46,627 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 20:45:46,628 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 20:45:46,629 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 20:45:46,629 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 20:45:46,630 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 20:45:46,630 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 20:45:46,630 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 20:45:46,631 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 20:45:46,631 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 20:45:46,631 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-20 20:45:46,632 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 20:45:46,632 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 20:45:46,633 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-20 20:45:46,633 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-20 20:45:46,633 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 20:45:46,633 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-20 20:45:46,634 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-20 20:45:46,634 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-20 20:45:46,635 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 20:45:46,636 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 20:45:46,637 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 20:45:46,639 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 20:45:46,642 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 20:45:46,642 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 20:45:46,642 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 20:45:46,642 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 20:45:46,642 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 20:45:46,643 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 20:45:46,643 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 20:45:46,643 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:45:46,643 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 20:45:46,644 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-20 20:45:46,644 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 20:45:46,644 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 20:45:46,644 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-20 20:45:46,644 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 20:45:46,645 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 20:45:46,645 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 20:45:46,645 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_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fa2b7015249343fdf8056852ea29542152fe4e2fe5328579e80867d2e6b2b327 [2022-11-20 20:45:46,899 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 20:45:46,919 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 20:45:46,921 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 20:45:46,923 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 20:45:46,923 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 20:45:46,924 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/ldv-validator-v0.6/linux-torvalds-645ef9e-32_7a-sound--oss--sound.ko-entry_point.cil.out.i [2022-11-20 20:45:49,975 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 20:45:50,757 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 20:45:50,758 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/sv-benchmarks/c/ldv-validator-v0.6/linux-torvalds-645ef9e-32_7a-sound--oss--sound.ko-entry_point.cil.out.i [2022-11-20 20:45:50,807 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/data/6bd9e6d85/5bfac86fb2a4497a98461ec580fec48b/FLAGcbb2a5d47 [2022-11-20 20:45:50,826 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/data/6bd9e6d85/5bfac86fb2a4497a98461ec580fec48b [2022-11-20 20:45:50,829 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 20:45:50,831 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 20:45:50,832 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 20:45:50,832 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 20:45:50,836 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 20:45:50,837 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:45:50" (1/1) ... [2022-11-20 20:45:50,838 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b95d0d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:45:50, skipping insertion in model container [2022-11-20 20:45:50,838 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:45:50" (1/1) ... [2022-11-20 20:45:50,846 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 20:45:51,045 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 20:45:51,677 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_928ba410-133e-44ca-8eb7-535920fe0088/sv-benchmarks/c/ldv-validator-v0.6/linux-torvalds-645ef9e-32_7a-sound--oss--sound.ko-entry_point.cil.out.i[81795,81808] [2022-11-20 20:45:53,174 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.abstractShiftLeft(BitabsTranslation.java:148) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.constructBinaryBitwiseIntegerExpression(IntegerTranslation.java:187) 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:728) 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:1413) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:220) 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 20:45:53,206 INFO L158 Benchmark]: Toolchain (without parser) took 2374.17ms. Allocated memory was 155.2MB in the beginning and 195.0MB in the end (delta: 39.8MB). Free memory was 105.9MB in the beginning and 149.2MB in the end (delta: -43.3MB). Peak memory consumption was 64.4MB. Max. memory is 16.1GB. [2022-11-20 20:45:53,207 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 155.2MB. Free memory is still 101.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 20:45:53,208 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2371.95ms. Allocated memory was 155.2MB in the beginning and 195.0MB in the end (delta: 39.8MB). Free memory was 105.9MB in the beginning and 149.2MB in the end (delta: -43.3MB). Peak memory consumption was 64.4MB. Max. memory is 16.1GB. [2022-11-20 20:45:53,210 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 155.2MB. Free memory is still 101.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2371.95ms. Allocated memory was 155.2MB in the beginning and 195.0MB in the end (delta: 39.8MB). Free memory was 105.9MB in the beginning and 149.2MB in the end (delta: -43.3MB). Peak memory consumption was 64.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: NullPointerException: null: de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.TypeSizes.extractIntegerValue(TypeSizes.java:384) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-validator-v0.6/linux-torvalds-645ef9e-32_7a-sound--oss--sound.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash fa2b7015249343fdf8056852ea29542152fe4e2fe5328579e80867d2e6b2b327 --- 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 20:45:55,332 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 20:45:55,334 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 20:45:55,373 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 20:45:55,374 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 20:45:55,377 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 20:45:55,380 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 20:45:55,383 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 20:45:55,385 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 20:45:55,390 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 20:45:55,392 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 20:45:55,393 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 20:45:55,394 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 20:45:55,395 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 20:45:55,396 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 20:45:55,397 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 20:45:55,403 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 20:45:55,406 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 20:45:55,408 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 20:45:55,409 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 20:45:55,410 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 20:45:55,416 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 20:45:55,417 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 20:45:55,418 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 20:45:55,425 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 20:45:55,429 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 20:45:55,431 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 20:45:55,432 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 20:45:55,433 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 20:45:55,434 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 20:45:55,435 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 20:45:55,436 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 20:45:55,437 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 20:45:55,437 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 20:45:55,438 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 20:45:55,439 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 20:45:55,439 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 20:45:55,439 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 20:45:55,440 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 20:45:55,440 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 20:45:55,441 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 20:45:55,446 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-20 20:45:55,492 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 20:45:55,493 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 20:45:55,494 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 20:45:55,494 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 20:45:55,495 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 20:45:55,495 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 20:45:55,496 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 20:45:55,496 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 20:45:55,496 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 20:45:55,496 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 20:45:55,497 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 20:45:55,497 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 20:45:55,498 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 20:45:55,499 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 20:45:55,499 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 20:45:55,499 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 20:45:55,499 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 20:45:55,499 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 20:45:55,500 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-20 20:45:55,500 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-20 20:45:55,500 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 20:45:55,500 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 20:45:55,501 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 20:45:55,501 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 20:45:55,501 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 20:45:55,501 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 20:45:55,501 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:45:55,502 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 20:45:55,502 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 20:45:55,502 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 20:45:55,502 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-20 20:45:55,503 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-20 20:45:55,503 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 20:45:55,503 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 20:45:55,503 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-20 20:45:55,504 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_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fa2b7015249343fdf8056852ea29542152fe4e2fe5328579e80867d2e6b2b327 [2022-11-20 20:45:55,852 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 20:45:55,879 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 20:45:55,882 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 20:45:55,883 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 20:45:55,885 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 20:45:55,886 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/ldv-validator-v0.6/linux-torvalds-645ef9e-32_7a-sound--oss--sound.ko-entry_point.cil.out.i [2022-11-20 20:45:58,935 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 20:45:59,563 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 20:45:59,563 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/sv-benchmarks/c/ldv-validator-v0.6/linux-torvalds-645ef9e-32_7a-sound--oss--sound.ko-entry_point.cil.out.i [2022-11-20 20:45:59,613 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/data/ede005603/08c4afd3a3c740e88ba242ee65959e97/FLAG51ea0167e [2022-11-20 20:45:59,627 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/data/ede005603/08c4afd3a3c740e88ba242ee65959e97 [2022-11-20 20:45:59,630 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 20:45:59,631 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 20:45:59,632 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 20:45:59,633 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 20:45:59,636 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 20:45:59,637 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:45:59" (1/1) ... [2022-11-20 20:45:59,638 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d5fb816 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:45:59, skipping insertion in model container [2022-11-20 20:45:59,638 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:45:59" (1/1) ... [2022-11-20 20:45:59,645 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 20:45:59,826 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 20:46:00,426 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_928ba410-133e-44ca-8eb7-535920fe0088/sv-benchmarks/c/ldv-validator-v0.6/linux-torvalds-645ef9e-32_7a-sound--oss--sound.ko-entry_point.cil.out.i[81795,81808] [2022-11-20 20:46:02,670 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:46:02,786 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-20 20:46:02,887 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 20:46:02,947 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_928ba410-133e-44ca-8eb7-535920fe0088/sv-benchmarks/c/ldv-validator-v0.6/linux-torvalds-645ef9e-32_7a-sound--oss--sound.ko-entry_point.cil.out.i[81795,81808] [2022-11-20 20:46:03,492 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:46:03,545 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 20:46:03,618 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_928ba410-133e-44ca-8eb7-535920fe0088/sv-benchmarks/c/ldv-validator-v0.6/linux-torvalds-645ef9e-32_7a-sound--oss--sound.ko-entry_point.cil.out.i[81795,81808] [2022-11-20 20:46:04,091 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:46:04,334 INFO L208 MainTranslator]: Completed translation [2022-11-20 20:46:04,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:46:04 WrapperNode [2022-11-20 20:46:04,335 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 20:46:04,336 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 20:46:04,336 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 20:46:04,336 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 20:46:04,344 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:46:04" (1/1) ... [2022-11-20 20:46:04,513 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:46:04" (1/1) ... [2022-11-20 20:46:04,809 INFO L138 Inliner]: procedures = 434, calls = 5174, calls flagged for inlining = 152, calls inlined = 136, statements flattened = 9815 [2022-11-20 20:46:04,810 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 20:46:04,811 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 20:46:04,811 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 20:46:04,811 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 20:46:04,821 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:46:04" (1/1) ... [2022-11-20 20:46:04,821 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:46:04" (1/1) ... [2022-11-20 20:46:04,874 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:46:04" (1/1) ... [2022-11-20 20:46:04,874 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:46:04" (1/1) ... [2022-11-20 20:46:05,179 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:46:04" (1/1) ... [2022-11-20 20:46:05,223 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:46:04" (1/1) ... [2022-11-20 20:46:05,258 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:46:04" (1/1) ... [2022-11-20 20:46:05,280 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:46:04" (1/1) ... [2022-11-20 20:46:05,326 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 20:46:05,327 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 20:46:05,327 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 20:46:05,327 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 20:46:05,328 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:46:04" (1/1) ... [2022-11-20 20:46:05,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:46:05,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:46:05,373 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 20:46:05,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 20:46:05,425 INFO L130 BoogieDeclarations]: Found specification of procedure timer_open [2022-11-20 20:46:05,425 INFO L138 BoogieDeclarations]: Found implementation of procedure timer_open [2022-11-20 20:46:05,426 INFO L130 BoogieDeclarations]: Found specification of procedure timer_event [2022-11-20 20:46:05,426 INFO L138 BoogieDeclarations]: Found implementation of procedure timer_event [2022-11-20 20:46:05,426 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2022-11-20 20:46:05,426 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2022-11-20 20:46:05,426 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-20 20:46:05,427 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-20 20:46:05,427 INFO L130 BoogieDeclarations]: Found specification of procedure dma_reset_output [2022-11-20 20:46:05,427 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_reset_output [2022-11-20 20:46:05,427 INFO L130 BoogieDeclarations]: Found specification of procedure DMAbuf_release [2022-11-20 20:46:05,427 INFO L138 BoogieDeclarations]: Found implementation of procedure DMAbuf_release [2022-11-20 20:46:05,427 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~C_INT~X~C_ULONG~X~C_INT~X~C_INT~TO~VOID [2022-11-20 20:46:05,428 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~C_INT~X~C_ULONG~X~C_INT~X~C_INT~TO~VOID [2022-11-20 20:46:05,428 INFO L130 BoogieDeclarations]: Found specification of procedure local_start_dma [2022-11-20 20:46:05,428 INFO L138 BoogieDeclarations]: Found implementation of procedure local_start_dma [2022-11-20 20:46:05,428 INFO L130 BoogieDeclarations]: Found specification of procedure translate_bytes [2022-11-20 20:46:05,429 INFO L138 BoogieDeclarations]: Found implementation of procedure translate_bytes [2022-11-20 20:46:05,429 INFO L130 BoogieDeclarations]: Found specification of procedure __put_user_bad [2022-11-20 20:46:05,429 INFO L130 BoogieDeclarations]: Found specification of procedure seq_copy_to_input [2022-11-20 20:46:05,430 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_copy_to_input [2022-11-20 20:46:05,430 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~C_INT~X~C_INT~X~C_INT~X~C_INT~TO~VOID [2022-11-20 20:46:05,430 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~C_INT~X~C_INT~X~C_INT~X~C_INT~TO~VOID [2022-11-20 20:46:05,430 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-20 20:46:05,431 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-20 20:46:05,431 INFO L130 BoogieDeclarations]: Found specification of procedure DMAbuf_sync [2022-11-20 20:46:05,432 INFO L138 BoogieDeclarations]: Found implementation of procedure DMAbuf_sync [2022-11-20 20:46:05,432 INFO L130 BoogieDeclarations]: Found specification of procedure DMAbuf_launch_output [2022-11-20 20:46:05,433 INFO L138 BoogieDeclarations]: Found implementation of procedure DMAbuf_launch_output [2022-11-20 20:46:05,433 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-20 20:46:05,433 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-20 20:46:05,433 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_soundcard_mutex [2022-11-20 20:46:05,433 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_soundcard_mutex [2022-11-20 20:46:05,434 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-20 20:46:05,434 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-20 20:46:05,434 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~C_UINT~X~$Pointer$~X~C_INT~TO~C_INT [2022-11-20 20:46:05,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~C_UINT~X~$Pointer$~X~C_INT~TO~C_INT [2022-11-20 20:46:05,434 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 20:46:05,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2022-11-20 20:46:05,435 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-20 20:46:05,435 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-11-20 20:46:05,435 INFO L130 BoogieDeclarations]: Found specification of procedure DMAbuf_space_in_queue [2022-11-20 20:46:05,435 INFO L138 BoogieDeclarations]: Found implementation of procedure DMAbuf_space_in_queue [2022-11-20 20:46:05,435 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2022-11-20 20:46:05,435 INFO L130 BoogieDeclarations]: Found specification of procedure timer_get_time [2022-11-20 20:46:05,436 INFO L138 BoogieDeclarations]: Found implementation of procedure timer_get_time [2022-11-20 20:46:05,436 INFO L130 BoogieDeclarations]: Found specification of procedure enable_dma [2022-11-20 20:46:05,436 INFO L138 BoogieDeclarations]: Found implementation of procedure enable_dma [2022-11-20 20:46:05,437 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~C_ULONG~TO~VOID [2022-11-20 20:46:05,437 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~C_ULONG~TO~VOID [2022-11-20 20:46:05,438 INFO L130 BoogieDeclarations]: Found specification of procedure timer_ioctl [2022-11-20 20:46:05,438 INFO L138 BoogieDeclarations]: Found implementation of procedure timer_ioctl [2022-11-20 20:46:05,438 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~C_INT~X~C_SHORT~TO~C_SHORT [2022-11-20 20:46:05,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~C_INT~X~C_SHORT~TO~C_SHORT [2022-11-20 20:46:05,439 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-20 20:46:05,439 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-20 20:46:05,439 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~C_INT~X~C_UINT~X~$Pointer$~TO~C_INT [2022-11-20 20:46:05,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~C_INT~X~C_UINT~X~$Pointer$~TO~C_INT [2022-11-20 20:46:05,440 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2022-11-20 20:46:05,440 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2022-11-20 20:46:05,440 INFO L130 BoogieDeclarations]: Found specification of procedure sound_mixer_ioctl [2022-11-20 20:46:05,440 INFO L138 BoogieDeclarations]: Found implementation of procedure sound_mixer_ioctl [2022-11-20 20:46:05,440 INFO L130 BoogieDeclarations]: Found specification of procedure def_tmr_arm [2022-11-20 20:46:05,440 INFO L138 BoogieDeclarations]: Found implementation of procedure def_tmr_arm [2022-11-20 20:46:05,441 INFO L130 BoogieDeclarations]: Found specification of procedure dma_subdivide [2022-11-20 20:46:05,441 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_subdivide [2022-11-20 20:46:05,441 INFO L130 BoogieDeclarations]: Found specification of procedure DMAbuf_activate_recording [2022-11-20 20:46:05,441 INFO L138 BoogieDeclarations]: Found implementation of procedure DMAbuf_activate_recording [2022-11-20 20:46:05,441 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-20 20:46:05,441 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-20 20:46:05,442 INFO L130 BoogieDeclarations]: Found specification of procedure __copy_to_user [2022-11-20 20:46:05,442 INFO L138 BoogieDeclarations]: Found implementation of procedure __copy_to_user [2022-11-20 20:46:05,443 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-20 20:46:05,443 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-20 20:46:05,443 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~C_INT~TO~C_INT [2022-11-20 20:46:05,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~C_INT~TO~C_INT [2022-11-20 20:46:05,444 INFO L130 BoogieDeclarations]: Found specification of procedure seq_sync [2022-11-20 20:46:05,444 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_sync [2022-11-20 20:46:05,444 INFO L130 BoogieDeclarations]: Found specification of procedure default_set_bits [2022-11-20 20:46:05,445 INFO L138 BoogieDeclarations]: Found implementation of procedure default_set_bits [2022-11-20 20:46:05,445 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_sound_special [2022-11-20 20:46:05,446 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_sound_special [2022-11-20 20:46:05,446 INFO L130 BoogieDeclarations]: Found specification of procedure close_dmap [2022-11-20 20:46:05,446 INFO L138 BoogieDeclarations]: Found implementation of procedure close_dmap [2022-11-20 20:46:05,446 INFO L130 BoogieDeclarations]: Found specification of procedure def_tmr_close [2022-11-20 20:46:05,446 INFO L138 BoogieDeclarations]: Found implementation of procedure def_tmr_close [2022-11-20 20:46:05,447 INFO L130 BoogieDeclarations]: Found specification of procedure __get_user_bad [2022-11-20 20:46:05,447 INFO L130 BoogieDeclarations]: Found specification of procedure vfree [2022-11-20 20:46:05,447 INFO L138 BoogieDeclarations]: Found implementation of procedure vfree [2022-11-20 20:46:05,448 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2022-11-20 20:46:05,448 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2022-11-20 20:46:05,449 INFO L130 BoogieDeclarations]: Found specification of procedure timer_arm [2022-11-20 20:46:05,449 INFO L138 BoogieDeclarations]: Found implementation of procedure timer_arm [2022-11-20 20:46:05,449 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~C_INT~X~C_INT~TO~C_INT [2022-11-20 20:46:05,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~C_INT~X~C_INT~TO~C_INT [2022-11-20 20:46:05,449 INFO L130 BoogieDeclarations]: Found specification of procedure register_sound_special [2022-11-20 20:46:05,449 INFO L138 BoogieDeclarations]: Found implementation of procedure register_sound_special [2022-11-20 20:46:05,450 INFO L130 BoogieDeclarations]: Found specification of procedure sound_mmap [2022-11-20 20:46:05,450 INFO L138 BoogieDeclarations]: Found implementation of procedure sound_mmap [2022-11-20 20:46:05,450 INFO L130 BoogieDeclarations]: Found specification of procedure virt_to_phys [2022-11-20 20:46:05,450 INFO L138 BoogieDeclarations]: Found implementation of procedure virt_to_phys [2022-11-20 20:46:05,451 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~C_INT~X~C_UINT~TO~C_UINT [2022-11-20 20:46:05,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~C_INT~X~C_UINT~TO~C_UINT [2022-11-20 20:46:05,451 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 20:46:05,451 INFO L130 BoogieDeclarations]: Found specification of procedure claim_dma_lock [2022-11-20 20:46:05,451 INFO L138 BoogieDeclarations]: Found implementation of procedure claim_dma_lock [2022-11-20 20:46:05,451 INFO L130 BoogieDeclarations]: Found specification of procedure timer_close [2022-11-20 20:46:05,452 INFO L138 BoogieDeclarations]: Found implementation of procedure timer_close [2022-11-20 20:46:05,452 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 20:46:05,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 20:46:05,456 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-20 20:46:05,457 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2022-11-20 20:46:05,457 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2022-11-20 20:46:05,457 INFO L130 BoogieDeclarations]: Found specification of procedure dma_reset_input [2022-11-20 20:46:05,457 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_reset_input [2022-11-20 20:46:05,459 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2022-11-20 20:46:05,460 INFO L130 BoogieDeclarations]: Found specification of procedure interruptible_sleep_on_timeout [2022-11-20 20:46:05,460 INFO L138 BoogieDeclarations]: Found implementation of procedure interruptible_sleep_on_timeout [2022-11-20 20:46:05,460 INFO L130 BoogieDeclarations]: Found specification of procedure set_format [2022-11-20 20:46:05,465 INFO L138 BoogieDeclarations]: Found implementation of procedure set_format [2022-11-20 20:46:05,466 INFO L130 BoogieDeclarations]: Found specification of procedure DMAbuf_reset [2022-11-20 20:46:05,466 INFO L138 BoogieDeclarations]: Found implementation of procedure DMAbuf_reset [2022-11-20 20:46:05,466 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_sched_notrace [2022-11-20 20:46:05,466 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_sched_notrace [2022-11-20 20:46:05,466 INFO L130 BoogieDeclarations]: Found specification of procedure seq_reset [2022-11-20 20:46:05,466 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_reset [2022-11-20 20:46:05,467 INFO L130 BoogieDeclarations]: Found specification of procedure iminor [2022-11-20 20:46:05,467 INFO L138 BoogieDeclarations]: Found implementation of procedure iminor [2022-11-20 20:46:05,467 INFO L130 BoogieDeclarations]: Found specification of procedure seq_drain_midi_queues [2022-11-20 20:46:05,467 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_drain_midi_queues [2022-11-20 20:46:05,467 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~C_INT~TO~VOID [2022-11-20 20:46:05,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~C_INT~TO~VOID [2022-11-20 20:46:05,468 INFO L130 BoogieDeclarations]: Found specification of procedure dma_ioctl [2022-11-20 20:46:05,468 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_ioctl [2022-11-20 20:46:05,468 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_soundcard_mutex [2022-11-20 20:46:05,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_soundcard_mutex [2022-11-20 20:46:05,468 INFO L130 BoogieDeclarations]: Found specification of procedure device_destroy [2022-11-20 20:46:05,468 INFO L138 BoogieDeclarations]: Found implementation of procedure device_destroy [2022-11-20 20:46:05,468 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_dereference [2022-11-20 20:46:05,469 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_dereference [2022-11-20 20:46:05,469 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2022-11-20 20:46:05,469 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2022-11-20 20:46:05,469 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~C_INT~X~C_INT~X~$Pointer$~X~$Pointer$~TO~C_INT [2022-11-20 20:46:05,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~C_INT~X~C_INT~X~$Pointer$~X~$Pointer$~TO~C_INT [2022-11-20 20:46:05,469 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2022-11-20 20:46:05,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 20:46:05,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 20:46:05,470 INFO L130 BoogieDeclarations]: Found specification of procedure seq_startplay [2022-11-20 20:46:05,470 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_startplay [2022-11-20 20:46:05,470 INFO L130 BoogieDeclarations]: Found specification of procedure clear_dma_ff [2022-11-20 20:46:05,470 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_dma_ff [2022-11-20 20:46:05,471 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-11-20 20:46:05,471 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2022-11-20 20:46:05,471 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2022-11-20 20:46:05,471 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-11-20 20:46:05,471 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-20 20:46:05,471 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-20 20:46:05,471 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2022-11-20 20:46:05,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-20 20:46:05,472 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-20 20:46:05,472 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-20 20:46:05,472 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-11-20 20:46:05,472 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-11-20 20:46:05,472 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2022-11-20 20:46:05,473 INFO L130 BoogieDeclarations]: Found specification of procedure translate_mode [2022-11-20 20:46:05,473 INFO L138 BoogieDeclarations]: Found implementation of procedure translate_mode [2022-11-20 20:46:05,473 INFO L130 BoogieDeclarations]: Found specification of procedure try_module_get___0 [2022-11-20 20:46:05,473 INFO L138 BoogieDeclarations]: Found implementation of procedure try_module_get___0 [2022-11-20 20:46:05,473 INFO L130 BoogieDeclarations]: Found specification of procedure DMAbuf_move_wrpointer [2022-11-20 20:46:05,473 INFO L138 BoogieDeclarations]: Found implementation of procedure DMAbuf_move_wrpointer [2022-11-20 20:46:05,474 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-20 20:46:05,474 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-20 20:46:05,474 INFO L130 BoogieDeclarations]: Found specification of procedure tmr_reset [2022-11-20 20:46:05,474 INFO L138 BoogieDeclarations]: Found implementation of procedure tmr_reset [2022-11-20 20:46:05,474 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-20 20:46:05,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-20 20:46:05,474 INFO L130 BoogieDeclarations]: Found specification of procedure sound_stop_timer [2022-11-20 20:46:05,475 INFO L138 BoogieDeclarations]: Found implementation of procedure sound_stop_timer [2022-11-20 20:46:05,475 INFO L130 BoogieDeclarations]: Found specification of procedure tmr2ticks___0 [2022-11-20 20:46:05,475 INFO L138 BoogieDeclarations]: Found implementation of procedure tmr2ticks___0 [2022-11-20 20:46:05,475 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-20 20:46:05,475 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-20 20:46:05,475 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-20 20:46:05,477 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-20 20:46:05,477 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2022-11-20 20:46:05,477 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2022-11-20 20:46:05,477 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-11-20 20:46:05,477 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-11-20 20:46:05,478 INFO L130 BoogieDeclarations]: Found specification of procedure tmr_reset___0 [2022-11-20 20:46:05,478 INFO L138 BoogieDeclarations]: Found implementation of procedure tmr_reset___0 [2022-11-20 20:46:05,478 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~C_INT~X~C_INT~X~C_INT~X~C_INT~TO~C_INT [2022-11-20 20:46:05,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~C_INT~X~C_INT~X~C_INT~X~C_INT~TO~C_INT [2022-11-20 20:46:05,478 INFO L130 BoogieDeclarations]: Found specification of procedure poll_wait [2022-11-20 20:46:05,478 INFO L138 BoogieDeclarations]: Found implementation of procedure poll_wait [2022-11-20 20:46:05,479 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_sched_held [2022-11-20 20:46:05,479 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_sched_held [2022-11-20 20:46:05,479 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 20:46:05,479 INFO L130 BoogieDeclarations]: Found specification of procedure sound_free_dmap [2022-11-20 20:46:05,479 INFO L138 BoogieDeclarations]: Found implementation of procedure sound_free_dmap [2022-11-20 20:46:05,479 INFO L130 BoogieDeclarations]: Found specification of procedure module_put [2022-11-20 20:46:05,479 INFO L138 BoogieDeclarations]: Found implementation of procedure module_put [2022-11-20 20:46:05,480 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~C_INT~X~C_INT~X~C_INT~TO~VOID [2022-11-20 20:46:05,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~C_INT~X~C_INT~X~C_INT~TO~VOID [2022-11-20 20:46:05,480 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 20:46:05,480 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2022-11-20 20:46:05,480 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2022-11-20 20:46:05,480 INFO L130 BoogieDeclarations]: Found specification of procedure reprogram_timer [2022-11-20 20:46:05,481 INFO L138 BoogieDeclarations]: Found implementation of procedure reprogram_timer [2022-11-20 20:46:05,481 INFO L130 BoogieDeclarations]: Found specification of procedure midi_outc___0 [2022-11-20 20:46:05,481 INFO L138 BoogieDeclarations]: Found implementation of procedure midi_outc___0 [2022-11-20 20:46:05,481 INFO L130 BoogieDeclarations]: Found specification of procedure signal_pending [2022-11-20 20:46:05,481 INFO L138 BoogieDeclarations]: Found implementation of procedure signal_pending [2022-11-20 20:46:05,481 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~C_INT~X~C_INT~X~C_INT~TO~C_INT [2022-11-20 20:46:05,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~C_INT~X~C_INT~X~C_INT~TO~C_INT [2022-11-20 20:46:05,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-11-20 20:46:05,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-11-20 20:46:05,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2022-11-20 20:46:05,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-20 20:46:05,482 INFO L130 BoogieDeclarations]: Found specification of procedure dmabuf_timeout [2022-11-20 20:46:05,482 INFO L138 BoogieDeclarations]: Found implementation of procedure dmabuf_timeout [2022-11-20 20:46:05,483 INFO L130 BoogieDeclarations]: Found specification of procedure current_thread_info___0 [2022-11-20 20:46:05,483 INFO L138 BoogieDeclarations]: Found implementation of procedure current_thread_info___0 [2022-11-20 20:46:05,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-20 20:46:05,483 INFO L130 BoogieDeclarations]: Found specification of procedure module_is_live [2022-11-20 20:46:05,483 INFO L138 BoogieDeclarations]: Found implementation of procedure module_is_live [2022-11-20 20:46:05,483 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-11-20 20:46:05,483 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-11-20 20:46:05,484 INFO L130 BoogieDeclarations]: Found specification of procedure sound_start_dma [2022-11-20 20:46:05,484 INFO L138 BoogieDeclarations]: Found implementation of procedure sound_start_dma [2022-11-20 20:46:05,484 INFO L130 BoogieDeclarations]: Found specification of procedure def_tmr_event [2022-11-20 20:46:05,484 INFO L138 BoogieDeclarations]: Found implementation of procedure def_tmr_event [2022-11-20 20:46:05,484 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-11-20 20:46:05,484 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-11-20 20:46:05,485 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2022-11-20 20:46:05,485 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2022-11-20 20:46:05,485 INFO L130 BoogieDeclarations]: Found specification of procedure def_tmr_open [2022-11-20 20:46:05,486 INFO L138 BoogieDeclarations]: Found implementation of procedure def_tmr_open [2022-11-20 20:46:05,489 INFO L130 BoogieDeclarations]: Found specification of procedure interruptible_sleep_on [2022-11-20 20:46:05,490 INFO L138 BoogieDeclarations]: Found implementation of procedure interruptible_sleep_on [2022-11-20 20:46:05,490 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~C_INT~X~C_UCHAR~TO~C_INT [2022-11-20 20:46:05,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~C_INT~X~C_UCHAR~TO~C_INT [2022-11-20 20:46:05,490 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~C_INT~X~C_INT~TO~VOID [2022-11-20 20:46:05,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~C_INT~X~C_INT~TO~VOID [2022-11-20 20:46:05,490 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-20 20:46:05,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-20 20:46:05,491 INFO L130 BoogieDeclarations]: Found specification of procedure waitqueue_active [2022-11-20 20:46:05,492 INFO L138 BoogieDeclarations]: Found implementation of procedure waitqueue_active [2022-11-20 20:46:05,492 INFO L130 BoogieDeclarations]: Found specification of procedure sound_alloc_dmap [2022-11-20 20:46:05,493 INFO L138 BoogieDeclarations]: Found implementation of procedure sound_alloc_dmap [2022-11-20 20:46:05,493 INFO L130 BoogieDeclarations]: Found specification of procedure dma_set_fragment [2022-11-20 20:46:05,493 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_set_fragment [2022-11-20 20:46:05,493 INFO L130 BoogieDeclarations]: Found specification of procedure def_tmr_get_time [2022-11-20 20:46:05,493 INFO L138 BoogieDeclarations]: Found implementation of procedure def_tmr_get_time [2022-11-20 20:46:05,493 INFO L130 BoogieDeclarations]: Found specification of procedure sequencer_timer [2022-11-20 20:46:05,493 INFO L138 BoogieDeclarations]: Found implementation of procedure sequencer_timer [2022-11-20 20:46:05,494 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_residue [2022-11-20 20:46:05,494 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_residue [2022-11-20 20:46:05,494 INFO L130 BoogieDeclarations]: Found specification of procedure sync_output [2022-11-20 20:46:05,494 INFO L138 BoogieDeclarations]: Found implementation of procedure sync_output [2022-11-20 20:46:05,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2022-11-20 20:46:05,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2022-11-20 20:46:05,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-11-20 20:46:05,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2022-11-20 20:46:05,495 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-20 20:46:05,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-20 20:46:05,495 INFO L130 BoogieDeclarations]: Found specification of procedure copy_user_generic [2022-11-20 20:46:05,495 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_user_generic [2022-11-20 20:46:05,495 INFO L130 BoogieDeclarations]: Found specification of procedure open_dmap [2022-11-20 20:46:05,496 INFO L138 BoogieDeclarations]: Found implementation of procedure open_dmap [2022-11-20 20:46:05,496 INFO L130 BoogieDeclarations]: Found specification of procedure release_dma_lock [2022-11-20 20:46:05,496 INFO L138 BoogieDeclarations]: Found implementation of procedure release_dma_lock [2022-11-20 20:46:05,496 INFO L130 BoogieDeclarations]: Found specification of procedure vmalloc [2022-11-20 20:46:05,496 INFO L138 BoogieDeclarations]: Found implementation of procedure vmalloc [2022-11-20 20:46:05,496 INFO L130 BoogieDeclarations]: Found specification of procedure sound_poll [2022-11-20 20:46:05,496 INFO L138 BoogieDeclarations]: Found implementation of procedure sound_poll [2022-11-20 20:46:05,497 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2022-11-20 20:46:05,497 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2022-11-20 20:46:05,497 INFO L130 BoogieDeclarations]: Found specification of procedure disable_dma [2022-11-20 20:46:05,497 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_dma [2022-11-20 20:46:05,497 INFO L130 BoogieDeclarations]: Found specification of procedure tmr2ticks [2022-11-20 20:46:05,497 INFO L138 BoogieDeclarations]: Found implementation of procedure tmr2ticks [2022-11-20 20:46:05,498 INFO L130 BoogieDeclarations]: Found specification of procedure current_thread_info [2022-11-20 20:46:05,498 INFO L138 BoogieDeclarations]: Found implementation of procedure current_thread_info [2022-11-20 20:46:05,498 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-11-20 20:46:05,498 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-11-20 20:46:05,498 INFO L130 BoogieDeclarations]: Found specification of procedure request_sound_timer [2022-11-20 20:46:05,498 INFO L138 BoogieDeclarations]: Found implementation of procedure request_sound_timer [2022-11-20 20:46:05,498 INFO L130 BoogieDeclarations]: Found specification of procedure DMAbuf_get_buffer_pointer [2022-11-20 20:46:05,498 INFO L138 BoogieDeclarations]: Found implementation of procedure DMAbuf_get_buffer_pointer [2022-11-20 20:46:05,499 INFO L130 BoogieDeclarations]: Found specification of procedure sound_write [2022-11-20 20:46:05,499 INFO L138 BoogieDeclarations]: Found implementation of procedure sound_write [2022-11-20 20:46:05,499 INFO L130 BoogieDeclarations]: Found specification of procedure play_event [2022-11-20 20:46:05,499 INFO L138 BoogieDeclarations]: Found implementation of procedure play_event [2022-11-20 20:46:05,499 INFO L130 BoogieDeclarations]: Found specification of procedure reorganize_buffers [2022-11-20 20:46:05,499 INFO L138 BoogieDeclarations]: Found implementation of procedure reorganize_buffers [2022-11-20 20:46:05,500 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-20 20:46:05,500 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-20 20:46:05,500 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2022-11-20 20:46:05,500 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2022-11-20 20:46:05,500 INFO L130 BoogieDeclarations]: Found specification of procedure def_tmr_ioctl [2022-11-20 20:46:05,500 INFO L138 BoogieDeclarations]: Found implementation of procedure def_tmr_ioctl [2022-11-20 20:46:06,748 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 20:46:06,752 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 20:46:07,884 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-20 20:46:08,297 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3836: assume 0bv64 != ~tmp___1~3;#res := ~ret~3; [2022-11-20 20:46:08,297 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3836: assume !(0bv64 != ~tmp___1~3);#res := ~ret~3; [2022-11-20 20:46:08,297 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3803: havoc #t~switch115; [2022-11-20 20:46:08,297 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3832: assume #t~switch115; [2022-11-20 20:46:08,297 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3832: assume !#t~switch115;#t~switch115 := true; [2022-11-20 20:46:08,297 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3824: assume 0bv64 != ~tmp___0~8;#res := ~ret~3; [2022-11-20 20:46:08,298 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3824: assume !(0bv64 != ~tmp___0~8);#res := ~ret~3; [2022-11-20 20:46:08,298 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3820: assume #t~switch115; [2022-11-20 20:46:08,298 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3820: assume !#t~switch115;#t~switch115 := #t~switch115 || 16bv32 == ~size; [2022-11-20 20:46:08,298 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3816: assume #t~switch115;#res := ~ret~3; [2022-11-20 20:46:08,298 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3816: assume !#t~switch115;#t~switch115 := #t~switch115 || 10bv32 == ~size; [2022-11-20 20:46:08,298 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1: assume #t~switch115;#res := ~ret~3; [2022-11-20 20:46:08,298 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3812: assume #t~switch115;#res := ~ret~3; [2022-11-20 20:46:08,298 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3812: assume !#t~switch115;#t~switch115 := #t~switch115 || 8bv32 == ~size; [2022-11-20 20:46:08,298 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3845-1: ~tmp___2~2 := #t~ret118;havoc #t~ret118;#res := ~tmp___2~2[32:0]; [2022-11-20 20:46:08,299 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3845: SUMMARY for call #t~ret118 := copy_user_generic(~dst.base, ~dst.offset, ~src.base, ~src.offset, ~size); srcloc: null [2022-11-20 20:46:08,299 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##2: assume !#t~switch115;#t~switch115 := #t~switch115 || 2bv32 == ~size; [2022-11-20 20:46:08,299 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3808: assume #t~switch115;#res := ~ret~3; [2022-11-20 20:46:08,299 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3808: assume !#t~switch115;#t~switch115 := #t~switch115 || 4bv32 == ~size; [2022-11-20 20:46:08,299 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3835-1: ~tmp___1~3 := #t~ret117;havoc #t~ret117; [2022-11-20 20:46:08,299 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3835: SUMMARY for call #t~ret117 := ldv__builtin_expect(~sign_extendFrom32To64((if 0bv32 != ~ret~3 then 1bv32 else 0bv32)), 0bv64); srcloc: null [2022-11-20 20:46:08,299 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3823-1: ~tmp___0~8 := #t~ret116;havoc #t~ret116; [2022-11-20 20:46:08,299 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3823: SUMMARY for call #t~ret116 := ldv__builtin_expect(~sign_extendFrom32To64((if 0bv32 != ~ret~3 then 1bv32 else 0bv32)), 0bv64); srcloc: null [2022-11-20 20:46:08,299 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3844: assume #t~switch115; [2022-11-20 20:46:08,299 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3844: assume !#t~switch115; [2022-11-20 20:47:35,004 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3738: havoc __copy_from_user_#t~switch110#1; [2022-11-20 20:47:35,004 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3744: assume __copy_from_user_#t~switch110#1;__copy_from_user_#res#1 := __copy_from_user_~ret~2#1; [2022-11-20 20:47:35,005 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3744: assume !__copy_from_user_#t~switch110#1;__copy_from_user_#t~switch110#1 := __copy_from_user_#t~switch110#1 || 4bv32 == __copy_from_user_~size#1; [2022-11-20 20:47:35,005 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3749: assume __copy_from_user_#t~switch110#1;__copy_from_user_#res#1 := __copy_from_user_~ret~2#1; [2022-11-20 20:47:35,005 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3749: assume !__copy_from_user_#t~switch110#1;__copy_from_user_#t~switch110#1 := __copy_from_user_#t~switch110#1 || 8bv32 == __copy_from_user_~size#1; [2022-11-20 20:47:35,005 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3754: assume __copy_from_user_#t~switch110#1;__copy_from_user_#res#1 := __copy_from_user_~ret~2#1; [2022-11-20 20:47:35,005 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3754: assume !__copy_from_user_#t~switch110#1;__copy_from_user_#t~switch110#1 := __copy_from_user_#t~switch110#1 || 10bv32 == __copy_from_user_~size#1; [2022-11-20 20:47:35,006 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3759: assume __copy_from_user_#t~switch110#1; [2022-11-20 20:47:35,007 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3759: assume !__copy_from_user_#t~switch110#1;__copy_from_user_#t~switch110#1 := __copy_from_user_#t~switch110#1 || 16bv32 == __copy_from_user_~size#1; [2022-11-20 20:47:35,007 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3763-1: __copy_from_user_~tmp___0~7#1 := __copy_from_user_#t~ret111#1;havoc __copy_from_user_#t~ret111#1; [2022-11-20 20:47:35,007 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3763: SUMMARY for call __copy_from_user_#t~ret111#1 := ldv__builtin_expect(~sign_extendFrom32To64((if 0bv32 != __copy_from_user_~ret~2#1 then 1bv32 else 0bv32)), 0bv64); srcloc: null [2022-11-20 20:47:35,007 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3764: assume 0bv64 != __copy_from_user_~tmp___0~7#1;__copy_from_user_#res#1 := __copy_from_user_~ret~2#1; [2022-11-20 20:47:35,007 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3764: assume !(0bv64 != __copy_from_user_~tmp___0~7#1);__copy_from_user_#res#1 := __copy_from_user_~ret~2#1; [2022-11-20 20:47:35,008 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3772: assume __copy_from_user_#t~switch110#1; [2022-11-20 20:47:35,008 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3772: assume !__copy_from_user_#t~switch110#1;__copy_from_user_#t~switch110#1 := true; [2022-11-20 20:47:35,008 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3776: SUMMARY for call __copy_from_user_#t~ret112#1 := ldv__builtin_expect(~sign_extendFrom32To64((if 0bv32 != __copy_from_user_~ret~2#1 then 1bv32 else 0bv32)), 0bv64); srcloc: null [2022-11-20 20:47:35,008 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3776-1: __copy_from_user_~tmp___1~2#1 := __copy_from_user_#t~ret112#1;havoc __copy_from_user_#t~ret112#1; [2022-11-20 20:47:35,008 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3777: assume 0bv64 != __copy_from_user_~tmp___1~2#1;__copy_from_user_#res#1 := __copy_from_user_~ret~2#1; [2022-11-20 20:47:35,008 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3777: assume !(0bv64 != __copy_from_user_~tmp___1~2#1);__copy_from_user_#res#1 := __copy_from_user_~ret~2#1; [2022-11-20 20:47:35,008 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3785: assume __copy_from_user_#t~switch110#1; [2022-11-20 20:47:35,009 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3785: assume !__copy_from_user_#t~switch110#1; [2022-11-20 20:47:35,009 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3786: SUMMARY for call __copy_from_user_#t~ret113#1 := copy_user_generic(__copy_from_user_~dst#1.base, __copy_from_user_~dst#1.offset, __copy_from_user_~src#1.base, __copy_from_user_~src#1.offset, __copy_from_user_~size#1); srcloc: null [2022-11-20 20:47:35,009 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3786-1: __copy_from_user_~tmp___2~1#1 := __copy_from_user_#t~ret113#1;havoc __copy_from_user_#t~ret113#1;__copy_from_user_#res#1 := __copy_from_user_~tmp___2~1#1[32:0]; [2022-11-20 20:47:35,010 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##694: assume __copy_from_user_#t~switch110#1;__copy_from_user_#res#1 := __copy_from_user_~ret~2#1; [2022-11-20 20:47:35,011 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##695: assume !__copy_from_user_#t~switch110#1;__copy_from_user_#t~switch110#1 := __copy_from_user_#t~switch110#1 || 2bv32 == __copy_from_user_~size#1; [2022-11-20 20:47:35,245 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 20:47:35,269 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 20:47:35,269 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 20:47:35,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:47:35 BoogieIcfgContainer [2022-11-20 20:47:35,275 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 20:47:35,277 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 20:47:35,277 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 20:47:35,280 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 20:47:35,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 08:45:59" (1/3) ... [2022-11-20 20:47:35,281 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e9e4e8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:47:35, skipping insertion in model container [2022-11-20 20:47:35,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:46:04" (2/3) ... [2022-11-20 20:47:35,282 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e9e4e8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:47:35, skipping insertion in model container [2022-11-20 20:47:35,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:47:35" (3/3) ... [2022-11-20 20:47:35,283 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-torvalds-645ef9e-32_7a-sound--oss--sound.ko-entry_point.cil.out.i [2022-11-20 20:47:35,302 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 20:47:35,303 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 20:47:35,425 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 20:47:35,437 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=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@606f36a4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 20:47:35,439 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 20:47:35,458 INFO L276 IsEmpty]: Start isEmpty. Operand has 3656 states, 2796 states have (on average 1.5046494992846924) internal successors, (4207), 2886 states have internal predecessors, (4207), 726 states have call successors, (726), 133 states have call predecessors, (726), 132 states have return successors, (718), 700 states have call predecessors, (718), 718 states have call successors, (718) [2022-11-20 20:47:35,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-20 20:47:35,471 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:47:35,472 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:47:35,472 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:47:35,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:47:35,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1622436135, now seen corresponding path program 1 times [2022-11-20 20:47:35,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 20:47:35,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [438486066] [2022-11-20 20:47:35,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:47:35,501 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 20:47:35,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 20:47:35,506 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/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 20:47:35,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/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 20:47:41,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:47:41,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 2695 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 20:47:41,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:47:41,445 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-20 20:47:41,446 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 20:47:41,446 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 20:47:41,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [438486066] [2022-11-20 20:47:41,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [438486066] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:47:41,448 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:47:41,448 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:47:41,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921666927] [2022-11-20 20:47:41,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:47:41,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:47:41,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 20:47:41,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:47:41,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:47:41,502 INFO L87 Difference]: Start difference. First operand has 3656 states, 2796 states have (on average 1.5046494992846924) internal successors, (4207), 2886 states have internal predecessors, (4207), 726 states have call successors, (726), 133 states have call predecessors, (726), 132 states have return successors, (718), 700 states have call predecessors, (718), 718 states have call successors, (718) Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 20:47:42,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:47:42,539 INFO L93 Difference]: Finished difference Result 8250 states and 12757 transitions. [2022-11-20 20:47:42,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:47:42,541 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 57 [2022-11-20 20:47:42,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:47:42,597 INFO L225 Difference]: With dead ends: 8250 [2022-11-20 20:47:42,597 INFO L226 Difference]: Without dead ends: 4572 [2022-11-20 20:47:42,628 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 55 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 20:47:42,633 INFO L413 NwaCegarLoop]: 5812 mSDtfsCounter, 1423 mSDsluCounter, 5586 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1423 SdHoareTripleChecker+Valid, 11398 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 20:47:42,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1423 Valid, 11398 Invalid, 38 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 20:47:42,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4572 states. [2022-11-20 20:47:42,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4572 to 4564. [2022-11-20 20:47:42,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4564 states, 3518 states have (on average 1.5008527572484367) internal successors, (5280), 3621 states have internal predecessors, (5280), 863 states have call successors, (863), 183 states have call predecessors, (863), 182 states have return successors, (859), 835 states have call predecessors, (859), 859 states have call successors, (859) [2022-11-20 20:47:42,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4564 states to 4564 states and 7002 transitions. [2022-11-20 20:47:42,974 INFO L78 Accepts]: Start accepts. Automaton has 4564 states and 7002 transitions. Word has length 57 [2022-11-20 20:47:42,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:47:42,975 INFO L495 AbstractCegarLoop]: Abstraction has 4564 states and 7002 transitions. [2022-11-20 20:47:42,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 20:47:42,975 INFO L276 IsEmpty]: Start isEmpty. Operand 4564 states and 7002 transitions. [2022-11-20 20:47:42,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-20 20:47:42,988 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:47:42,988 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:47:43,071 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/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 20:47:43,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/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 20:47:43,207 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:47:43,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:47:43,208 INFO L85 PathProgramCache]: Analyzing trace with hash -957770457, now seen corresponding path program 1 times [2022-11-20 20:47:43,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 20:47:43,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [130974160] [2022-11-20 20:47:43,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:47:43,212 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 20:47:43,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 20:47:43,214 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/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 20:47:43,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/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 20:47:48,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:47:48,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 2610 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 20:47:48,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:47:49,375 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-20 20:47:49,376 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 20:47:49,376 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 20:47:49,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [130974160] [2022-11-20 20:47:49,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [130974160] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:47:49,376 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:47:49,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 20:47:49,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914702523] [2022-11-20 20:47:49,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:47:49,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:47:49,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 20:47:49,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:47:49,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:47:49,380 INFO L87 Difference]: Start difference. First operand 4564 states and 7002 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, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 20:47:49,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:47:49,638 INFO L93 Difference]: Finished difference Result 9113 states and 13983 transitions. [2022-11-20 20:47:49,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:47:49,639 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, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2022-11-20 20:47:49,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:47:49,667 INFO L225 Difference]: With dead ends: 9113 [2022-11-20 20:47:49,667 INFO L226 Difference]: Without dead ends: 4564 [2022-11-20 20:47:49,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 63 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 20:47:49,688 INFO L413 NwaCegarLoop]: 5620 mSDtfsCounter, 5588 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5588 SdHoareTripleChecker+Valid, 5620 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 20:47:49,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5588 Valid, 5620 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 20:47:49,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4564 states. [2022-11-20 20:47:49,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4564 to 4564. [2022-11-20 20:47:49,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4564 states, 3518 states have (on average 1.5002842524161455) internal successors, (5278), 3621 states have internal predecessors, (5278), 863 states have call successors, (863), 183 states have call predecessors, (863), 182 states have return successors, (859), 835 states have call predecessors, (859), 859 states have call successors, (859) [2022-11-20 20:47:49,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4564 states to 4564 states and 7000 transitions. [2022-11-20 20:47:49,924 INFO L78 Accepts]: Start accepts. Automaton has 4564 states and 7000 transitions. Word has length 65 [2022-11-20 20:47:49,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:47:49,925 INFO L495 AbstractCegarLoop]: Abstraction has 4564 states and 7000 transitions. [2022-11-20 20:47:49,925 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, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 20:47:49,926 INFO L276 IsEmpty]: Start isEmpty. Operand 4564 states and 7000 transitions. [2022-11-20 20:47:49,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-20 20:47:49,927 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:47:49,928 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:47:50,008 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/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 20:47:50,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/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 20:47:50,146 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:47:50,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:47:50,146 INFO L85 PathProgramCache]: Analyzing trace with hash 1748848937, now seen corresponding path program 1 times [2022-11-20 20:47:50,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 20:47:50,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [604479858] [2022-11-20 20:47:50,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:47:50,150 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 20:47:50,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 20:47:50,195 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/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 20:47:50,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/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 20:47:55,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:47:55,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 2609 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 20:47:55,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:47:56,077 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-20 20:47:56,077 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 20:47:56,077 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 20:47:56,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [604479858] [2022-11-20 20:47:56,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [604479858] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:47:56,077 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:47:56,078 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:47:56,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862444829] [2022-11-20 20:47:56,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:47:56,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:47:56,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 20:47:56,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:47:56,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:47:56,079 INFO L87 Difference]: Start difference. First operand 4564 states and 7000 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 20:47:57,142 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:47:57,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:47:57,398 INFO L93 Difference]: Finished difference Result 4577 states and 7012 transitions. [2022-11-20 20:47:57,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:47:57,398 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2022-11-20 20:47:57,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:47:57,432 INFO L225 Difference]: With dead ends: 4577 [2022-11-20 20:47:57,432 INFO L226 Difference]: Without dead ends: 4574 [2022-11-20 20:47:57,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 63 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 20:47:57,439 INFO L413 NwaCegarLoop]: 5629 mSDtfsCounter, 5575 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5575 SdHoareTripleChecker+Valid, 5658 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:47:57,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5575 Valid, 5658 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-20 20:47:57,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4574 states. [2022-11-20 20:47:57,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4574 to 4574. [2022-11-20 20:47:57,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4574 states, 3526 states have (on average 1.499149177538287) internal successors, (5286), 3628 states have internal predecessors, (5286), 863 states have call successors, (863), 185 states have call predecessors, (863), 184 states have return successors, (860), 836 states have call predecessors, (860), 860 states have call successors, (860) [2022-11-20 20:47:57,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4574 states to 4574 states and 7009 transitions. [2022-11-20 20:47:57,725 INFO L78 Accepts]: Start accepts. Automaton has 4574 states and 7009 transitions. Word has length 65 [2022-11-20 20:47:57,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:47:57,726 INFO L495 AbstractCegarLoop]: Abstraction has 4574 states and 7009 transitions. [2022-11-20 20:47:57,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 20:47:57,727 INFO L276 IsEmpty]: Start isEmpty. Operand 4574 states and 7009 transitions. [2022-11-20 20:47:57,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-20 20:47:57,729 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:47:57,729 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:47:57,808 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/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 20:47:57,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/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 20:47:57,951 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:47:57,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:47:57,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1621423704, now seen corresponding path program 1 times [2022-11-20 20:47:57,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 20:47:57,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1514295765] [2022-11-20 20:47:57,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:47:57,954 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 20:47:57,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 20:47:57,957 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/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 20:47:58,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/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 20:48:03,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:48:03,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 2610 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 20:48:03,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:48:03,857 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-20 20:48:03,857 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 20:48:03,858 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 20:48:03,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1514295765] [2022-11-20 20:48:03,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1514295765] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:48:03,859 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:48:03,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:48:03,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456456227] [2022-11-20 20:48:03,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:48:03,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:48:03,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 20:48:03,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:48:03,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:48:03,861 INFO L87 Difference]: Start difference. First operand 4574 states and 7009 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 20:48:05,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:48:05,183 INFO L93 Difference]: Finished difference Result 6999 states and 10621 transitions. [2022-11-20 20:48:05,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:48:05,184 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2022-11-20 20:48:05,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:48:05,224 INFO L225 Difference]: With dead ends: 6999 [2022-11-20 20:48:05,225 INFO L226 Difference]: Without dead ends: 6911 [2022-11-20 20:48:05,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 64 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 20:48:05,233 INFO L413 NwaCegarLoop]: 6384 mSDtfsCounter, 2260 mSDsluCounter, 5553 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2260 SdHoareTripleChecker+Valid, 11937 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-20 20:48:05,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2260 Valid, 11937 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-20 20:48:05,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6911 states. [2022-11-20 20:48:05,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6911 to 6911. [2022-11-20 20:48:05,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6911 states, 5321 states have (on average 1.4933283217440332) internal successors, (7946), 5495 states have internal predecessors, (7946), 1279 states have call successors, (1279), 313 states have call predecessors, (1279), 310 states have return successors, (1278), 1220 states have call predecessors, (1278), 1276 states have call successors, (1278) [2022-11-20 20:48:05,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6911 states to 6911 states and 10503 transitions. [2022-11-20 20:48:05,740 INFO L78 Accepts]: Start accepts. Automaton has 6911 states and 10503 transitions. Word has length 66 [2022-11-20 20:48:05,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:48:05,742 INFO L495 AbstractCegarLoop]: Abstraction has 6911 states and 10503 transitions. [2022-11-20 20:48:05,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 20:48:05,742 INFO L276 IsEmpty]: Start isEmpty. Operand 6911 states and 10503 transitions. [2022-11-20 20:48:05,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-20 20:48:05,751 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:48:05,751 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 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] [2022-11-20 20:48:05,827 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/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 20:48:05,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/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 20:48:05,967 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:48:05,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:48:05,968 INFO L85 PathProgramCache]: Analyzing trace with hash 353370162, now seen corresponding path program 1 times [2022-11-20 20:48:05,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 20:48:05,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [363613463] [2022-11-20 20:48:05,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:48:05,972 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 20:48:05,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 20:48:05,973 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/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 20:48:06,005 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/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 20:48:11,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:48:11,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 2750 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 20:48:11,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:48:11,567 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-20 20:48:11,567 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 20:48:11,567 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 20:48:11,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [363613463] [2022-11-20 20:48:11,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [363613463] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:48:11,567 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:48:11,568 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 20:48:11,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145889917] [2022-11-20 20:48:11,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:48:11,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 20:48:11,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 20:48:11,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 20:48:11,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 20:48:11,569 INFO L87 Difference]: Start difference. First operand 6911 states and 10503 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-20 20:48:12,588 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:48:13,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:48:13,474 INFO L93 Difference]: Finished difference Result 13818 states and 21001 transitions. [2022-11-20 20:48:13,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 20:48:13,474 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 110 [2022-11-20 20:48:13,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:48:13,516 INFO L225 Difference]: With dead ends: 13818 [2022-11-20 20:48:13,516 INFO L226 Difference]: Without dead ends: 6915 [2022-11-20 20:48:13,544 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-20 20:48:13,545 INFO L413 NwaCegarLoop]: 5616 mSDtfsCounter, 23 mSDsluCounter, 22458 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 28074 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-20 20:48:13,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 28074 Invalid, 26 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-20 20:48:13,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6915 states. [2022-11-20 20:48:13,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6915 to 6904. [2022-11-20 20:48:13,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6904 states, 5318 states have (on average 1.4928544565626176) internal successors, (7939), 5490 states have internal predecessors, (7939), 1277 states have call successors, (1277), 311 states have call predecessors, (1277), 308 states have return successors, (1276), 1217 states have call predecessors, (1276), 1274 states have call successors, (1276) [2022-11-20 20:48:14,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6904 states to 6904 states and 10492 transitions. [2022-11-20 20:48:14,024 INFO L78 Accepts]: Start accepts. Automaton has 6904 states and 10492 transitions. Word has length 110 [2022-11-20 20:48:14,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:48:14,025 INFO L495 AbstractCegarLoop]: Abstraction has 6904 states and 10492 transitions. [2022-11-20 20:48:14,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-20 20:48:14,025 INFO L276 IsEmpty]: Start isEmpty. Operand 6904 states and 10492 transitions. [2022-11-20 20:48:14,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-20 20:48:14,036 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:48:14,037 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 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] [2022-11-20 20:48:14,113 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/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 20:48:14,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/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 20:48:14,251 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:48:14,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:48:14,251 INFO L85 PathProgramCache]: Analyzing trace with hash 885555850, now seen corresponding path program 1 times [2022-11-20 20:48:14,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 20:48:14,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1078955396] [2022-11-20 20:48:14,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:48:14,254 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 20:48:14,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 20:48:14,256 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/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 20:48:14,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/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 20:48:19,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:48:19,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 2763 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 20:48:19,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:48:19,878 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-11-20 20:48:19,878 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 20:48:19,879 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 20:48:19,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1078955396] [2022-11-20 20:48:19,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1078955396] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:48:19,879 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:48:19,879 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 20:48:19,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139114537] [2022-11-20 20:48:19,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:48:19,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 20:48:19,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 20:48:19,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 20:48:19,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 20:48:19,880 INFO L87 Difference]: Start difference. First operand 6904 states and 10492 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-20 20:48:21,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:48:21,747 INFO L93 Difference]: Finished difference Result 13960 states and 21237 transitions. [2022-11-20 20:48:21,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 20:48:21,748 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 115 [2022-11-20 20:48:21,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:48:21,790 INFO L225 Difference]: With dead ends: 13960 [2022-11-20 20:48:21,791 INFO L226 Difference]: Without dead ends: 7082 [2022-11-20 20:48:21,814 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 20:48:21,815 INFO L413 NwaCegarLoop]: 5902 mSDtfsCounter, 3403 mSDsluCounter, 7839 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 562 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3403 SdHoareTripleChecker+Valid, 13741 SdHoareTripleChecker+Invalid, 572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 562 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-20 20:48:21,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3403 Valid, 13741 Invalid, 572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [562 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-20 20:48:21,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7082 states. [2022-11-20 20:48:22,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7082 to 6904. [2022-11-20 20:48:22,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6904 states, 5318 states have (on average 1.4921022940955246) internal successors, (7935), 5490 states have internal predecessors, (7935), 1277 states have call successors, (1277), 311 states have call predecessors, (1277), 308 states have return successors, (1276), 1217 states have call predecessors, (1276), 1274 states have call successors, (1276) [2022-11-20 20:48:22,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6904 states to 6904 states and 10488 transitions. [2022-11-20 20:48:22,237 INFO L78 Accepts]: Start accepts. Automaton has 6904 states and 10488 transitions. Word has length 115 [2022-11-20 20:48:22,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:48:22,237 INFO L495 AbstractCegarLoop]: Abstraction has 6904 states and 10488 transitions. [2022-11-20 20:48:22,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-20 20:48:22,238 INFO L276 IsEmpty]: Start isEmpty. Operand 6904 states and 10488 transitions. [2022-11-20 20:48:22,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-11-20 20:48:22,243 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:48:22,244 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 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] [2022-11-20 20:48:22,319 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/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 20:48:22,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/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 20:48:22,467 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:48:22,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:48:22,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1602260644, now seen corresponding path program 1 times [2022-11-20 20:48:22,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 20:48:22,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [781780757] [2022-11-20 20:48:22,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:48:22,471 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 20:48:22,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 20:48:22,472 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/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 20:48:22,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/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 20:48:27,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:48:28,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 2767 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 20:48:28,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:48:28,108 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-11-20 20:48:28,111 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 20:48:28,111 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 20:48:28,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [781780757] [2022-11-20 20:48:28,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [781780757] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:48:28,112 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:48:28,112 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:48:28,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117029471] [2022-11-20 20:48:28,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:48:28,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:48:28,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 20:48:28,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:48:28,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:48:28,114 INFO L87 Difference]: Start difference. First operand 6904 states and 10488 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-20 20:48:28,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:48:28,560 INFO L93 Difference]: Finished difference Result 13810 states and 20984 transitions. [2022-11-20 20:48:28,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:48:28,562 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 118 [2022-11-20 20:48:28,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:48:28,598 INFO L225 Difference]: With dead ends: 13810 [2022-11-20 20:48:28,598 INFO L226 Difference]: Without dead ends: 6932 [2022-11-20 20:48:28,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 116 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 20:48:28,622 INFO L413 NwaCegarLoop]: 5615 mSDtfsCounter, 8 mSDsluCounter, 5612 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 11227 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:48:28,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 11227 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:48:28,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6932 states. [2022-11-20 20:48:29,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6932 to 6908. [2022-11-20 20:48:29,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6908 states, 5322 states have (on average 1.4917324314167606) internal successors, (7939), 5494 states have internal predecessors, (7939), 1277 states have call successors, (1277), 311 states have call predecessors, (1277), 308 states have return successors, (1276), 1217 states have call predecessors, (1276), 1274 states have call successors, (1276) [2022-11-20 20:48:29,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6908 states to 6908 states and 10492 transitions. [2022-11-20 20:48:29,099 INFO L78 Accepts]: Start accepts. Automaton has 6908 states and 10492 transitions. Word has length 118 [2022-11-20 20:48:29,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:48:29,101 INFO L495 AbstractCegarLoop]: Abstraction has 6908 states and 10492 transitions. [2022-11-20 20:48:29,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-20 20:48:29,101 INFO L276 IsEmpty]: Start isEmpty. Operand 6908 states and 10492 transitions. [2022-11-20 20:48:29,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-20 20:48:29,107 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:48:29,108 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 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] [2022-11-20 20:48:29,186 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/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 20:48:29,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/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 20:48:29,323 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:48:29,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:48:29,323 INFO L85 PathProgramCache]: Analyzing trace with hash -1269147403, now seen corresponding path program 1 times [2022-11-20 20:48:29,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 20:48:29,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [389459776] [2022-11-20 20:48:29,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:48:29,326 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 20:48:29,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 20:48:29,327 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/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 20:48:29,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/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 20:48:34,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:48:34,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 2772 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 20:48:34,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:48:34,877 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 50 proven. 1 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-11-20 20:48:34,877 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:48:35,102 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2022-11-20 20:48:35,103 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 20:48:35,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [389459776] [2022-11-20 20:48:35,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [389459776] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:48:35,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1399396967] [2022-11-20 20:48:35,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:48:35,104 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 20:48:35,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/cvc4 [2022-11-20 20:48:35,110 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 20:48:35,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2022-11-20 20:48:37,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:48:37,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 2772 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 20:48:37,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:48:37,815 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2022-11-20 20:48:37,816 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 20:48:37,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1399396967] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:48:37,816 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-20 20:48:37,816 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2022-11-20 20:48:37,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885341920] [2022-11-20 20:48:37,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:48:37,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:48:37,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 20:48:37,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:48:37,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-20 20:48:37,818 INFO L87 Difference]: Start difference. First operand 6908 states and 10492 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-20 20:48:39,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:48:39,259 INFO L93 Difference]: Finished difference Result 13789 states and 20951 transitions. [2022-11-20 20:48:39,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:48:39,260 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 122 [2022-11-20 20:48:39,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:48:39,289 INFO L225 Difference]: With dead ends: 13789 [2022-11-20 20:48:39,289 INFO L226 Difference]: Without dead ends: 6907 [2022-11-20 20:48:39,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 358 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-20 20:48:39,310 INFO L413 NwaCegarLoop]: 7311 mSDtfsCounter, 5520 mSDsluCounter, 2232 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5520 SdHoareTripleChecker+Valid, 9543 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-20 20:48:39,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5520 Valid, 9543 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-20 20:48:39,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6907 states. [2022-11-20 20:48:39,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6907 to 6907. [2022-11-20 20:48:39,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6907 states, 5322 states have (on average 1.4913566328447951) internal successors, (7937), 5493 states have internal predecessors, (7937), 1276 states have call successors, (1276), 311 states have call predecessors, (1276), 308 states have return successors, (1266), 1217 states have call predecessors, (1266), 1266 states have call successors, (1266) [2022-11-20 20:48:39,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6907 states to 6907 states and 10479 transitions. [2022-11-20 20:48:39,752 INFO L78 Accepts]: Start accepts. Automaton has 6907 states and 10479 transitions. Word has length 122 [2022-11-20 20:48:39,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:48:39,753 INFO L495 AbstractCegarLoop]: Abstraction has 6907 states and 10479 transitions. [2022-11-20 20:48:39,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-20 20:48:39,753 INFO L276 IsEmpty]: Start isEmpty. Operand 6907 states and 10479 transitions. [2022-11-20 20:48:39,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-11-20 20:48:39,770 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:48:39,770 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 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] [2022-11-20 20:48:39,804 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2022-11-20 20:48:40,039 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/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 20:48:40,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/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 20:48:40,189 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:48:40,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:48:40,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1942455248, now seen corresponding path program 1 times [2022-11-20 20:48:40,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 20:48:40,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [623323257] [2022-11-20 20:48:40,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:48:40,193 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 20:48:40,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 20:48:40,194 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/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 20:48:40,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/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 20:48:45,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:48:45,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 2911 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 20:48:45,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:48:45,896 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 52 proven. 1 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-11-20 20:48:45,896 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:48:46,103 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2022-11-20 20:48:46,104 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 20:48:46,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [623323257] [2022-11-20 20:48:46,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [623323257] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:48:46,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1319670057] [2022-11-20 20:48:46,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:48:46,104 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 20:48:46,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/cvc4 [2022-11-20 20:48:46,106 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 20:48:46,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2022-11-20 20:48:48,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:48:48,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 2911 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 20:48:48,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:48:48,710 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2022-11-20 20:48:48,710 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 20:48:48,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1319670057] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:48:48,710 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-20 20:48:48,711 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2022-11-20 20:48:48,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319204799] [2022-11-20 20:48:48,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:48:48,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:48:48,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 20:48:48,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:48:48,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-20 20:48:48,712 INFO L87 Difference]: Start difference. First operand 6907 states and 10479 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-20 20:48:49,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:48:49,340 INFO L93 Difference]: Finished difference Result 15317 states and 23380 transitions. [2022-11-20 20:48:49,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:48:49,342 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 148 [2022-11-20 20:48:49,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:48:49,381 INFO L225 Difference]: With dead ends: 15317 [2022-11-20 20:48:49,382 INFO L226 Difference]: Without dead ends: 8436 [2022-11-20 20:48:49,401 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 436 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-20 20:48:49,404 INFO L413 NwaCegarLoop]: 6941 mSDtfsCounter, 1647 mSDsluCounter, 5050 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1920 SdHoareTripleChecker+Valid, 11991 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:48:49,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1920 Valid, 11991 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:48:49,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8436 states. [2022-11-20 20:48:49,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8436 to 6913. [2022-11-20 20:48:49,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6913 states, 5328 states have (on average 1.4908033033033032) internal successors, (7943), 5499 states have internal predecessors, (7943), 1276 states have call successors, (1276), 311 states have call predecessors, (1276), 308 states have return successors, (1266), 1217 states have call predecessors, (1266), 1266 states have call successors, (1266) [2022-11-20 20:48:49,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6913 states to 6913 states and 10485 transitions. [2022-11-20 20:48:49,877 INFO L78 Accepts]: Start accepts. Automaton has 6913 states and 10485 transitions. Word has length 148 [2022-11-20 20:48:49,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:48:49,877 INFO L495 AbstractCegarLoop]: Abstraction has 6913 states and 10485 transitions. [2022-11-20 20:48:49,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-20 20:48:49,878 INFO L276 IsEmpty]: Start isEmpty. Operand 6913 states and 10485 transitions. [2022-11-20 20:48:49,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-11-20 20:48:49,892 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:48:49,892 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 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] [2022-11-20 20:48:49,915 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2022-11-20 20:48:50,187 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/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 20:48:50,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/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 20:48:50,307 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:48:50,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:48:50,307 INFO L85 PathProgramCache]: Analyzing trace with hash -575616342, now seen corresponding path program 1 times [2022-11-20 20:48:50,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 20:48:50,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2048847320] [2022-11-20 20:48:50,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:48:50,311 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 20:48:50,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 20:48:50,313 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/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 20:48:50,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/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 20:48:55,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:48:56,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 2912 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 20:48:56,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:48:56,138 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 52 proven. 1 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-11-20 20:48:56,138 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:48:56,337 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2022-11-20 20:48:56,337 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 20:48:56,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2048847320] [2022-11-20 20:48:56,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2048847320] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:48:56,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [378342929] [2022-11-20 20:48:56,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:48:56,338 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 20:48:56,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/cvc4 [2022-11-20 20:48:56,343 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 20:48:56,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2022-11-20 20:48:58,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:48:58,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 2912 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 20:48:58,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:48:59,297 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-11-20 20:48:59,297 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 20:48:59,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [378342929] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:48:59,298 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-20 20:48:59,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2022-11-20 20:48:59,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378704309] [2022-11-20 20:48:59,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:48:59,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:48:59,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 20:48:59,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:48:59,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-20 20:48:59,300 INFO L87 Difference]: Start difference. First operand 6913 states and 10485 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-20 20:49:01,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:49:01,000 INFO L93 Difference]: Finished difference Result 17119 states and 25852 transitions. [2022-11-20 20:49:01,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:49:01,001 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 149 [2022-11-20 20:49:01,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:49:01,044 INFO L225 Difference]: With dead ends: 17119 [2022-11-20 20:49:01,044 INFO L226 Difference]: Without dead ends: 10232 [2022-11-20 20:49:01,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 444 GetRequests, 439 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-20 20:49:01,065 INFO L413 NwaCegarLoop]: 7063 mSDtfsCounter, 3608 mSDsluCounter, 4793 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3608 SdHoareTripleChecker+Valid, 11856 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-20 20:49:01,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3608 Valid, 11856 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-20 20:49:01,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10232 states. [2022-11-20 20:49:01,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10232 to 10214. [2022-11-20 20:49:01,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10214 states, 7805 states have (on average 1.476873798846893) internal successors, (11527), 8073 states have internal predecessors, (11527), 1921 states have call successors, (1921), 491 states have call predecessors, (1921), 487 states have return successors, (1911), 1824 states have call predecessors, (1911), 1911 states have call successors, (1911) [2022-11-20 20:49:01,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10214 states to 10214 states and 15359 transitions. [2022-11-20 20:49:01,830 INFO L78 Accepts]: Start accepts. Automaton has 10214 states and 15359 transitions. Word has length 149 [2022-11-20 20:49:01,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:49:01,831 INFO L495 AbstractCegarLoop]: Abstraction has 10214 states and 15359 transitions. [2022-11-20 20:49:01,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-20 20:49:01,831 INFO L276 IsEmpty]: Start isEmpty. Operand 10214 states and 15359 transitions. [2022-11-20 20:49:01,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-11-20 20:49:01,856 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:49:01,856 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 3, 3, 3, 3, 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] [2022-11-20 20:49:01,933 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/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 20:49:02,108 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2022-11-20 20:49:02,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt [2022-11-20 20:49:02,279 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:49:02,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:49:02,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1437347356, now seen corresponding path program 1 times [2022-11-20 20:49:02,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 20:49:02,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1203599090] [2022-11-20 20:49:02,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:49:02,283 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 20:49:02,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 20:49:02,285 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/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 20:49:02,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/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 20:49:07,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:49:08,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 2950 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 20:49:08,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:49:08,336 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 54 proven. 1 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2022-11-20 20:49:08,337 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:49:08,550 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2022-11-20 20:49:08,551 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 20:49:08,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1203599090] [2022-11-20 20:49:08,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1203599090] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:49:08,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1902650238] [2022-11-20 20:49:08,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:49:08,552 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 20:49:08,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/cvc4 [2022-11-20 20:49:08,553 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 20:49:08,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2022-11-20 20:49:11,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:49:11,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 2950 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 20:49:11,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:49:11,416 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2022-11-20 20:49:11,416 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 20:49:11,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1902650238] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:49:11,417 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-20 20:49:11,417 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2022-11-20 20:49:11,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488772256] [2022-11-20 20:49:11,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:49:11,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 20:49:11,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 20:49:11,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 20:49:11,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-20 20:49:11,419 INFO L87 Difference]: Start difference. First operand 10214 states and 15359 transitions. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-20 20:49:12,605 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:49:14,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:49:14,234 INFO L93 Difference]: Finished difference Result 24229 states and 36390 transitions. [2022-11-20 20:49:14,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 20:49:14,235 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 164 [2022-11-20 20:49:14,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:49:14,290 INFO L225 Difference]: With dead ends: 24229 [2022-11-20 20:49:14,290 INFO L226 Difference]: Without dead ends: 14041 [2022-11-20 20:49:14,317 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 491 GetRequests, 484 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-11-20 20:49:14,318 INFO L413 NwaCegarLoop]: 9189 mSDtfsCounter, 3871 mSDsluCounter, 14502 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3871 SdHoareTripleChecker+Valid, 23691 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-20 20:49:14,318 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3871 Valid, 23691 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-20 20:49:14,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14041 states. [2022-11-20 20:49:15,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14041 to 10216. [2022-11-20 20:49:15,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10216 states, 7807 states have (on average 1.4766235429742538) internal successors, (11528), 8075 states have internal predecessors, (11528), 1921 states have call successors, (1921), 491 states have call predecessors, (1921), 487 states have return successors, (1911), 1824 states have call predecessors, (1911), 1911 states have call successors, (1911) [2022-11-20 20:49:15,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10216 states to 10216 states and 15360 transitions. [2022-11-20 20:49:15,228 INFO L78 Accepts]: Start accepts. Automaton has 10216 states and 15360 transitions. Word has length 164 [2022-11-20 20:49:15,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:49:15,229 INFO L495 AbstractCegarLoop]: Abstraction has 10216 states and 15360 transitions. [2022-11-20 20:49:15,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-20 20:49:15,229 INFO L276 IsEmpty]: Start isEmpty. Operand 10216 states and 15360 transitions. [2022-11-20 20:49:15,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2022-11-20 20:49:15,252 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:49:15,252 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 3, 3, 3, 3, 3, 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] [2022-11-20 20:49:15,329 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/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 20:49:15,496 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (16)] Forceful destruction successful, exit code 0 [2022-11-20 20:49:15,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt [2022-11-20 20:49:15,667 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:49:15,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:49:15,667 INFO L85 PathProgramCache]: Analyzing trace with hash 70172863, now seen corresponding path program 1 times [2022-11-20 20:49:15,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 20:49:15,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1455957415] [2022-11-20 20:49:15,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:49:15,671 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 20:49:15,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 20:49:15,673 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/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 20:49:15,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/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 20:49:21,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:49:21,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 3008 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 20:49:21,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:49:21,995 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 54 proven. 1 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2022-11-20 20:49:21,995 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:49:22,237 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2022-11-20 20:49:22,238 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 20:49:22,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1455957415] [2022-11-20 20:49:22,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1455957415] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:49:22,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1275500143] [2022-11-20 20:49:22,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:49:22,239 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 20:49:22,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/cvc4 [2022-11-20 20:49:22,243 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 20:49:22,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2022-11-20 20:49:24,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:49:24,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 3008 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 20:49:24,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:49:25,036 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2022-11-20 20:49:25,036 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 20:49:25,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1275500143] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:49:25,036 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-20 20:49:25,036 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2022-11-20 20:49:25,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654927022] [2022-11-20 20:49:25,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:49:25,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:49:25,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 20:49:25,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:49:25,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-20 20:49:25,039 INFO L87 Difference]: Start difference. First operand 10216 states and 15360 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, (22), 2 states have call predecessors, (22), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-20 20:49:25,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:49:25,736 INFO L93 Difference]: Finished difference Result 20407 states and 30690 transitions. [2022-11-20 20:49:25,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:49:25,737 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, (22), 2 states have call predecessors, (22), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 193 [2022-11-20 20:49:25,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:49:25,774 INFO L225 Difference]: With dead ends: 20407 [2022-11-20 20:49:25,774 INFO L226 Difference]: Without dead ends: 10217 [2022-11-20 20:49:25,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 576 GetRequests, 571 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-20 20:49:25,802 INFO L413 NwaCegarLoop]: 5616 mSDtfsCounter, 0 mSDsluCounter, 5610 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 11226 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:49:25,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 11226 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:49:25,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10217 states. [2022-11-20 20:49:26,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10217 to 10217. [2022-11-20 20:49:26,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10217 states, 7808 states have (on average 1.4765625) internal successors, (11529), 8076 states have internal predecessors, (11529), 1921 states have call successors, (1921), 491 states have call predecessors, (1921), 487 states have return successors, (1911), 1824 states have call predecessors, (1911), 1911 states have call successors, (1911) [2022-11-20 20:49:26,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10217 states to 10217 states and 15361 transitions. [2022-11-20 20:49:26,638 INFO L78 Accepts]: Start accepts. Automaton has 10217 states and 15361 transitions. Word has length 193 [2022-11-20 20:49:26,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:49:26,639 INFO L495 AbstractCegarLoop]: Abstraction has 10217 states and 15361 transitions. [2022-11-20 20:49:26,639 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, (22), 2 states have call predecessors, (22), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-20 20:49:26,639 INFO L276 IsEmpty]: Start isEmpty. Operand 10217 states and 15361 transitions. [2022-11-20 20:49:26,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2022-11-20 20:49:26,665 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:49:26,665 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 3, 3, 3, 3, 3, 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] [2022-11-20 20:49:26,751 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/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 20:49:26,922 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (18)] Forceful destruction successful, exit code 0 [2022-11-20 20:49:27,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt [2022-11-20 20:49:27,091 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:49:27,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:49:27,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1659875706, now seen corresponding path program 1 times [2022-11-20 20:49:27,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 20:49:27,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1634642638] [2022-11-20 20:49:27,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:49:27,094 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 20:49:27,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 20:49:27,096 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/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 20:49:27,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/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 20:49:32,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:49:33,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 3011 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 20:49:33,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:49:33,246 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 54 proven. 1 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2022-11-20 20:49:33,246 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:49:33,496 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2022-11-20 20:49:33,496 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 20:49:33,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1634642638] [2022-11-20 20:49:33,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1634642638] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:49:33,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [77822862] [2022-11-20 20:49:33,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:49:33,497 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 20:49:33,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/cvc4 [2022-11-20 20:49:33,498 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 20:49:33,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2022-11-20 20:49:36,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:49:36,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 3011 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 20:49:36,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:49:36,303 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2022-11-20 20:49:36,303 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 20:49:36,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [77822862] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:49:36,304 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-20 20:49:36,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2022-11-20 20:49:36,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914397489] [2022-11-20 20:49:36,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:49:36,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:49:36,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 20:49:36,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:49:36,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-20 20:49:36,306 INFO L87 Difference]: Start difference. First operand 10217 states and 15361 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-20 20:49:37,392 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:49:38,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:49:38,219 INFO L93 Difference]: Finished difference Result 19503 states and 29329 transitions. [2022-11-20 20:49:38,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:49:38,219 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 195 [2022-11-20 20:49:38,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:49:38,248 INFO L225 Difference]: With dead ends: 19503 [2022-11-20 20:49:38,249 INFO L226 Difference]: Without dead ends: 9312 [2022-11-20 20:49:38,274 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 582 GetRequests, 577 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-20 20:49:38,274 INFO L413 NwaCegarLoop]: 8382 mSDtfsCounter, 4782 mSDsluCounter, 3636 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4782 SdHoareTripleChecker+Valid, 12018 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-20 20:49:38,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4782 Valid, 12018 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-20 20:49:38,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9312 states. [2022-11-20 20:49:39,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9312 to 9294. [2022-11-20 20:49:39,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9294 states, 7081 states have (on average 1.4711198983194465) internal successors, (10417), 7326 states have internal predecessors, (10417), 1776 states have call successors, (1776), 440 states have call predecessors, (1776), 436 states have return successors, (1766), 1686 states have call predecessors, (1766), 1766 states have call successors, (1766) [2022-11-20 20:49:39,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9294 states to 9294 states and 13959 transitions. [2022-11-20 20:49:39,097 INFO L78 Accepts]: Start accepts. Automaton has 9294 states and 13959 transitions. Word has length 195 [2022-11-20 20:49:39,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:49:39,098 INFO L495 AbstractCegarLoop]: Abstraction has 9294 states and 13959 transitions. [2022-11-20 20:49:39,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-20 20:49:39,098 INFO L276 IsEmpty]: Start isEmpty. Operand 9294 states and 13959 transitions. [2022-11-20 20:49:39,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2022-11-20 20:49:39,125 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:49:39,125 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 3, 3, 3, 3, 3, 3, 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] [2022-11-20 20:49:39,159 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (20)] Forceful destruction successful, exit code 0 [2022-11-20 20:49:39,430 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-20 20:49:39,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/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 20:49:39,539 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:49:39,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:49:39,539 INFO L85 PathProgramCache]: Analyzing trace with hash 209714647, now seen corresponding path program 1 times [2022-11-20 20:49:39,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 20:49:39,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [584808168] [2022-11-20 20:49:39,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:49:39,543 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 20:49:39,543 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 20:49:39,545 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/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 20:49:39,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-20 20:49:45,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:49:45,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 2937 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 20:49:45,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:49:45,512 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 54 proven. 1 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2022-11-20 20:49:45,513 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:49:45,713 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2022-11-20 20:49:45,713 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 20:49:45,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [584808168] [2022-11-20 20:49:45,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [584808168] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:49:45,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [257603677] [2022-11-20 20:49:45,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:49:45,714 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 20:49:45,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/cvc4 [2022-11-20 20:49:45,715 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 20:49:45,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2022-11-20 20:49:53,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:49:53,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 2937 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 20:49:53,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:49:53,372 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 54 proven. 1 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2022-11-20 20:49:53,372 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:49:53,514 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2022-11-20 20:49:53,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [257603677] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:49:53,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062771349] [2022-11-20 20:49:53,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:49:53,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:49:53,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:49:53,519 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:49:53,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-20 20:49:56,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:49:56,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 2937 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 20:49:56,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:49:57,751 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2022-11-20 20:49:57,751 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 20:49:57,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1062771349] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:49:57,751 INFO L184 FreeRefinementEngine]: Found 1 perfect and 4 imperfect interpolant sequences. [2022-11-20 20:49:57,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4, 4, 4, 4] total 7 [2022-11-20 20:49:57,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161820940] [2022-11-20 20:49:57,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:49:57,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:49:57,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 20:49:57,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:49:57,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-20 20:49:57,754 INFO L87 Difference]: Start difference. First operand 9294 states and 13959 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 2 states have internal predecessors, (113), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-20 20:49:58,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:49:58,350 INFO L93 Difference]: Finished difference Result 18562 states and 27886 transitions. [2022-11-20 20:49:58,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:49:58,351 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 2 states have internal predecessors, (113), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 194 [2022-11-20 20:49:58,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:49:58,377 INFO L225 Difference]: With dead ends: 18562 [2022-11-20 20:49:58,377 INFO L226 Difference]: Without dead ends: 9294 [2022-11-20 20:49:58,394 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 965 GetRequests, 960 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-20 20:49:58,394 INFO L413 NwaCegarLoop]: 5613 mSDtfsCounter, 5564 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5564 SdHoareTripleChecker+Valid, 5613 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 20:49:58,395 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5564 Valid, 5613 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 20:49:58,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9294 states. [2022-11-20 20:49:59,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9294 to 9294. [2022-11-20 20:49:59,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9294 states, 7081 states have (on average 1.4704137833639317) internal successors, (10412), 7326 states have internal predecessors, (10412), 1776 states have call successors, (1776), 440 states have call predecessors, (1776), 436 states have return successors, (1766), 1686 states have call predecessors, (1766), 1766 states have call successors, (1766) [2022-11-20 20:49:59,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9294 states to 9294 states and 13954 transitions. [2022-11-20 20:49:59,328 INFO L78 Accepts]: Start accepts. Automaton has 9294 states and 13954 transitions. Word has length 194 [2022-11-20 20:49:59,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:49:59,328 INFO L495 AbstractCegarLoop]: Abstraction has 9294 states and 13954 transitions. [2022-11-20 20:49:59,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 2 states have internal predecessors, (113), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-20 20:49:59,328 INFO L276 IsEmpty]: Start isEmpty. Operand 9294 states and 13954 transitions. [2022-11-20 20:49:59,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2022-11-20 20:49:59,343 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:49:59,344 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 3, 3, 3, 3, 3, 3, 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] [2022-11-20 20:49:59,387 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (22)] Forceful destruction successful, exit code 0 [2022-11-20 20:49:59,640 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-11-20 20:49:59,829 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-20 20:49:59,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/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 20:49:59,960 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:49:59,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:49:59,960 INFO L85 PathProgramCache]: Analyzing trace with hash -496881959, now seen corresponding path program 1 times [2022-11-20 20:49:59,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 20:49:59,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2065384108] [2022-11-20 20:49:59,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:49:59,963 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 20:49:59,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 20:49:59,964 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/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 20:49:59,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-20 20:50:06,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:50:06,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 2937 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 20:50:06,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:50:06,415 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 54 proven. 1 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2022-11-20 20:50:06,415 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:50:06,632 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2022-11-20 20:50:06,632 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 20:50:06,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2065384108] [2022-11-20 20:50:06,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2065384108] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:50:06,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1656685912] [2022-11-20 20:50:06,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:50:06,633 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 20:50:06,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/cvc4 [2022-11-20 20:50:06,636 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 20:50:06,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2022-11-20 20:50:14,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:50:14,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 2937 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 20:50:14,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:50:14,418 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 54 proven. 1 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2022-11-20 20:50:14,418 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:50:14,549 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2022-11-20 20:50:14,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1656685912] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:50:14,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [69411682] [2022-11-20 20:50:14,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:50:14,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:50:14,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:50:14,552 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:50:14,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-11-20 20:50:17,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:50:18,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 2937 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 20:50:18,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:50:18,357 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 54 proven. 1 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2022-11-20 20:50:18,357 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:50:18,490 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2022-11-20 20:50:18,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [69411682] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:50:18,491 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-20 20:50:18,491 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 6 [2022-11-20 20:50:18,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350096779] [2022-11-20 20:50:18,491 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-20 20:50:18,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 20:50:18,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 20:50:18,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 20:50:18,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-20 20:50:18,493 INFO L87 Difference]: Start difference. First operand 9294 states and 13954 transitions. Second operand has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 6 states have internal predecessors, (133), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-20 20:50:19,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:50:19,387 INFO L93 Difference]: Finished difference Result 18627 states and 27966 transitions. [2022-11-20 20:50:19,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 20:50:19,388 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 6 states have internal predecessors, (133), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 194 [2022-11-20 20:50:19,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:50:19,428 INFO L225 Difference]: With dead ends: 18627 [2022-11-20 20:50:19,428 INFO L226 Difference]: Without dead ends: 9359 [2022-11-20 20:50:19,450 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1158 GetRequests, 1154 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-20 20:50:19,451 INFO L413 NwaCegarLoop]: 5617 mSDtfsCounter, 33 mSDsluCounter, 16822 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 22439 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 20:50:19,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 22439 Invalid, 27 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 20:50:19,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9359 states. [2022-11-20 20:50:20,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9359 to 9329. [2022-11-20 20:50:20,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9329 states, 7116 states have (on average 1.469505340078696) internal successors, (10457), 7361 states have internal predecessors, (10457), 1776 states have call successors, (1776), 440 states have call predecessors, (1776), 436 states have return successors, (1766), 1686 states have call predecessors, (1766), 1766 states have call successors, (1766) [2022-11-20 20:50:20,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9329 states to 9329 states and 13999 transitions. [2022-11-20 20:50:20,297 INFO L78 Accepts]: Start accepts. Automaton has 9329 states and 13999 transitions. Word has length 194 [2022-11-20 20:50:20,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:50:20,297 INFO L495 AbstractCegarLoop]: Abstraction has 9329 states and 13999 transitions. [2022-11-20 20:50:20,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 6 states have internal predecessors, (133), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-20 20:50:20,298 INFO L276 IsEmpty]: Start isEmpty. Operand 9329 states and 13999 transitions. [2022-11-20 20:50:20,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2022-11-20 20:50:20,319 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:50:20,319 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 3, 3, 3, 3, 3, 3, 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] [2022-11-20 20:50:20,392 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-11-20 20:50:20,612 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2022-11-20 20:50:20,752 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (25)] Forceful destruction successful, exit code 0 [2022-11-20 20:50:20,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt [2022-11-20 20:50:20,920 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:50:20,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:50:20,921 INFO L85 PathProgramCache]: Analyzing trace with hash -20172558, now seen corresponding path program 2 times [2022-11-20 20:50:20,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 20:50:20,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [926245016] [2022-11-20 20:50:20,924 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 20:50:20,924 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 20:50:20,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 20:50:20,925 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/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 20:50:20,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-11-20 20:51:56,602 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 20:51:56,603 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 20:51:56,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 2942 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-20 20:51:56,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:51:57,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:51:57,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:51:57,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:51:57,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:51:57,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:51:57,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:51:57,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:51:57,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:51:57,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:51:57,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:51:57,389 INFO L217 Elim1Store]: Index analysis took 307 ms [2022-11-20 20:51:58,743 INFO L321 Elim1Store]: treesize reduction 345, result has 16.1 percent of original size [2022-11-20 20:51:58,744 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 8 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 5 case distinctions, treesize of input 39 treesize of output 88 [2022-11-20 20:51:59,197 INFO L217 Elim1Store]: Index analysis took 358 ms [2022-11-20 20:52:00,498 INFO L321 Elim1Store]: treesize reduction 446, result has 13.7 percent of original size [2022-11-20 20:52:00,499 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 6 case distinctions, treesize of input 597 treesize of output 646 [2022-11-20 20:52:06,836 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:52:06,838 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 7 [2022-11-20 20:52:06,883 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:52:06,884 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 7 [2022-11-20 20:52:06,980 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2022-11-20 20:52:06,980 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 20:52:06,980 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 20:52:06,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [926245016] [2022-11-20 20:52:06,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [926245016] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:52:06,981 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:52:06,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 20:52:06,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778453166] [2022-11-20 20:52:06,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:52:06,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 20:52:06,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 20:52:06,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 20:52:06,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 20:52:06,983 INFO L87 Difference]: Start difference. First operand 9329 states and 13999 transitions. Second operand has 5 states, 5 states have (on average 23.2) internal successors, (116), 4 states have internal predecessors, (116), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-20 20:52:08,244 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:52:13,321 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:52:20,616 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:52:25,751 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:52:32,669 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:52:34,673 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:52:35,843 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:52:39,166 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:52:41,131 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:52:43,265 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:52:45,273 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:52:49,870 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:52:51,529 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:52:53,714 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:52:55,726 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:52:59,736 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:53:07,913 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:53:16,820 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:53:18,824 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:53:20,923 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:53:22,933 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:53:24,942 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:53:26,744 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:53:29,295 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:53:31,300 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:53:38,476 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:53:39,539 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:53:42,216 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:53:45,917 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:53:49,518 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:53:55,424 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:53:56,660 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:53:59,041 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:54:01,573 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:54:04,403 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:54:06,417 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:54:09,496 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:54:11,506 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:54:20,629 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:54:22,635 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:54:31,422 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:54:33,432 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:54:34,909 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:54:43,606 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:54:50,207 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:54:52,226 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:54:53,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:54:53,787 INFO L93 Difference]: Finished difference Result 26096 states and 39462 transitions. [2022-11-20 20:54:53,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 20:54:53,789 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 4 states have internal predecessors, (116), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 198 [2022-11-20 20:54:53,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:54:53,865 INFO L225 Difference]: With dead ends: 26096 [2022-11-20 20:54:53,866 INFO L226 Difference]: Without dead ends: 16793 [2022-11-20 20:54:53,894 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-20 20:54:53,894 INFO L413 NwaCegarLoop]: 6385 mSDtfsCounter, 4415 mSDsluCounter, 16464 mSDsCounter, 0 mSdLazyCounter, 3172 mSolverCounterSat, 4 mSolverCounterUnsat, 29 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 159.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4415 SdHoareTripleChecker+Valid, 22849 SdHoareTripleChecker+Invalid, 3205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 3172 IncrementalHoareTripleChecker+Invalid, 29 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 164.9s IncrementalHoareTripleChecker+Time [2022-11-20 20:54:53,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4415 Valid, 22849 Invalid, 3205 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4 Valid, 3172 Invalid, 29 Unknown, 0 Unchecked, 164.9s Time] [2022-11-20 20:54:53,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16793 states. [2022-11-20 20:54:55,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16793 to 16573. [2022-11-20 20:54:55,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16573 states, 12736 states have (on average 1.4845320351758795) internal successors, (18907), 13230 states have internal predecessors, (18907), 3039 states have call successors, (3039), 827 states have call predecessors, (3039), 797 states have return successors, (3272), 2763 states have call predecessors, (3272), 3027 states have call successors, (3272) [2022-11-20 20:54:55,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16573 states to 16573 states and 25218 transitions. [2022-11-20 20:54:55,629 INFO L78 Accepts]: Start accepts. Automaton has 16573 states and 25218 transitions. Word has length 198 [2022-11-20 20:54:55,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:54:55,630 INFO L495 AbstractCegarLoop]: Abstraction has 16573 states and 25218 transitions. [2022-11-20 20:54:55,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 4 states have internal predecessors, (116), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-20 20:54:55,631 INFO L276 IsEmpty]: Start isEmpty. Operand 16573 states and 25218 transitions. [2022-11-20 20:54:55,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2022-11-20 20:54:55,669 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:54:55,669 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 3, 3, 3, 3, 3, 3, 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] [2022-11-20 20:54:55,777 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-11-20 20:54:55,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/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 20:54:55,895 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:54:55,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:54:55,895 INFO L85 PathProgramCache]: Analyzing trace with hash 582185707, now seen corresponding path program 1 times [2022-11-20 20:54:55,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 20:54:55,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2006070535] [2022-11-20 20:54:55,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:54:55,898 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 20:54:55,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 20:54:55,899 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/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 20:54:55,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-11-20 20:55:18,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:55:18,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 2947 conjuncts, 46 conjunts are in the unsatisfiable core [2022-11-20 20:55:18,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:55:19,186 INFO L217 Elim1Store]: Index analysis took 330 ms [2022-11-20 20:55:20,845 INFO L321 Elim1Store]: treesize reduction 446, result has 13.7 percent of original size [2022-11-20 20:55:20,845 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 6 case distinctions, treesize of input 597 treesize of output 646 [2022-11-20 20:55:20,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:55:20,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:55:20,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:55:20,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:55:20,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:55:20,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:55:20,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:55:20,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:55:20,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:55:20,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:55:21,219 INFO L217 Elim1Store]: Index analysis took 299 ms [2022-11-20 20:55:22,378 INFO L321 Elim1Store]: treesize reduction 345, result has 16.1 percent of original size [2022-11-20 20:55:22,379 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 8 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 5 case distinctions, treesize of input 39 treesize of output 88 [2022-11-20 20:55:28,139 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:55:28,140 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 7 [2022-11-20 20:55:28,165 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:55:28,166 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 7 [2022-11-20 20:55:28,265 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 57 proven. 3 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2022-11-20 20:55:28,265 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:55:29,914 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 13 proven. 3 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2022-11-20 20:55:29,914 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 20:55:29,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2006070535] [2022-11-20 20:55:29,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2006070535] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:55:29,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1985382027] [2022-11-20 20:55:29,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:55:29,915 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 20:55:29,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/cvc4 [2022-11-20 20:55:29,916 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 20:55:29,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (29)] Waiting until timeout for monitored process [2022-11-20 20:57:20,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:57:20,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 2947 conjuncts, 52 conjunts are in the unsatisfiable core [2022-11-20 20:57:20,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:57:20,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:57:20,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:57:20,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:57:20,718 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 69 [2022-11-20 20:57:20,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:57:20,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:57:20,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:57:20,847 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 69 [2022-11-20 20:57:44,100 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-20 20:57:51,778 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 20:57:51,778 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 74 treesize of output 88 [2022-11-20 20:57:52,025 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 20:57:52,026 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 60 treesize of output 74 [2022-11-20 20:57:53,838 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 72 proven. 2 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-11-20 20:57:53,838 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:57:56,629 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 20:57:56,629 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 206 treesize of output 86 [2022-11-20 20:58:01,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1985382027] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:58:01,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [421930298] [2022-11-20 20:58:01,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:58:01,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:58:01,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:58:01,222 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:58:01,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928ba410-133e-44ca-8eb7-535920fe0088/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-11-20 20:58:04,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:58:05,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 2947 conjuncts, 40 conjunts are in the unsatisfiable core [2022-11-20 20:58:05,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:58:05,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:58:05,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:58:05,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:58:05,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:58:05,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:58:05,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:58:05,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:58:05,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:58:05,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:58:05,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:58:05,589 INFO L217 Elim1Store]: Index analysis took 296 ms [2022-11-20 20:58:06,769 INFO L321 Elim1Store]: treesize reduction 345, result has 16.1 percent of original size [2022-11-20 20:58:06,770 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 8 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 5 case distinctions, treesize of input 39 treesize of output 88 [2022-11-20 20:58:07,196 INFO L217 Elim1Store]: Index analysis took 334 ms [2022-11-20 20:58:08,537 INFO L321 Elim1Store]: treesize reduction 446, result has 13.7 percent of original size [2022-11-20 20:58:08,537 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 6 case distinctions, treesize of input 597 treesize of output 646 [2022-11-20 20:58:13,780 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:58:13,781 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 7 [2022-11-20 20:58:13,813 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:58:13,813 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 7 [2022-11-20 20:58:13,833 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 57 proven. 3 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2022-11-20 20:58:13,834 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:58:16,251 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 13 proven. 3 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2022-11-20 20:58:16,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [421930298] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:58:16,252 INFO L184 FreeRefinementEngine]: Found 0 perfect and 5 imperfect interpolant sequences. [2022-11-20 20:58:16,252 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 14, 5, 7] total 25 [2022-11-20 20:58:16,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275005298] [2022-11-20 20:58:16,253 INFO L85 oduleStraightlineAll]: Using 5 imperfect interpolants to construct interpolant automaton [2022-11-20 20:58:16,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-20 20:58:16,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 20:58:16,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-20 20:58:16,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=799, Unknown=2, NotChecked=0, Total=930 [2022-11-20 20:58:16,255 INFO L87 Difference]: Start difference. First operand 16573 states and 25218 transitions. Second operand has 25 states, 24 states have (on average 10.708333333333334) internal successors, (257), 23 states have internal predecessors, (257), 7 states have call successors, (53), 5 states have call predecessors, (53), 7 states have return successors, (51), 8 states have call predecessors, (51), 7 states have call successors, (51) [2022-11-20 20:58:17,605 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:58:19,393 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:58:21,004 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:58:22,694 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:58:24,719 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:58:26,190 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:58:37,024 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:59:04,226 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:59:05,387 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:59:20,366 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:59:23,066 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:59:29,473 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:59:44,450 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:59:46,469 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:59:48,474 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:59:50,031 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:59:52,045 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:59:54,054 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:59:56,060 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:59:58,070 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:59:59,859 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 21:00:01,876 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 21:00:05,749 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 21:00:07,760 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 21:00:09,769 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers []