./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-intel-ixgb-ixgb.cil.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_f4c0813b-8b4c-44fd-8add-538ed9d685a8/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0813b-8b4c-44fd-8add-538ed9d685a8/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_f4c0813b-8b4c-44fd-8add-538ed9d685a8/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0813b-8b4c-44fd-8add-538ed9d685a8/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-intel-ixgb-ixgb.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0813b-8b4c-44fd-8add-538ed9d685a8/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_f4c0813b-8b4c-44fd-8add-538ed9d685a8/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 81d3a41c14974620b49988c1780c7d5a75f04674e564d23c865943e8c9fe2089 --- 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 20:01:46,289 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 20:01:46,292 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 20:01:46,338 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 20:01:46,339 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 20:01:46,340 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 20:01:46,342 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 20:01:46,348 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 20:01:46,353 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 20:01:46,360 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 20:01:46,361 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 20:01:46,362 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 20:01:46,362 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 20:01:46,363 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 20:01:46,365 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 20:01:46,366 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 20:01:46,367 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 20:01:46,368 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 20:01:46,369 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 20:01:46,376 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 20:01:46,382 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 20:01:46,386 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 20:01:46,389 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 20:01:46,390 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 20:01:46,402 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 20:01:46,403 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 20:01:46,403 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 20:01:46,404 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 20:01:46,404 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 20:01:46,405 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 20:01:46,406 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 20:01:46,406 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 20:01:46,407 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 20:01:46,408 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 20:01:46,409 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 20:01:46,409 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 20:01:46,410 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 20:01:46,410 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 20:01:46,415 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 20:01:46,417 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 20:01:46,418 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 20:01:46,419 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0813b-8b4c-44fd-8add-538ed9d685a8/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-20 20:01:46,462 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 20:01:46,462 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 20:01:46,463 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 20:01:46,463 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 20:01:46,464 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 20:01:46,464 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 20:01:46,465 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 20:01:46,465 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 20:01:46,465 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 20:01:46,465 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-20 20:01:46,467 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 20:01:46,467 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 20:01:46,467 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-20 20:01:46,467 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-20 20:01:46,468 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 20:01:46,468 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-20 20:01:46,468 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-20 20:01:46,468 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-20 20:01:46,470 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 20:01:46,470 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 20:01:46,470 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 20:01:46,470 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 20:01:46,471 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 20:01:46,471 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 20:01:46,471 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 20:01:46,471 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 20:01:46,472 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 20:01:46,472 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 20:01:46,473 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 20:01:46,473 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:01:46,473 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 20:01:46,474 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-20 20:01:46,474 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 20:01:46,474 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 20:01:46,474 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-20 20:01:46,474 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 20:01:46,475 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 20:01:46,475 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 20:01:46,475 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_f4c0813b-8b4c-44fd-8add-538ed9d685a8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0813b-8b4c-44fd-8add-538ed9d685a8/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 81d3a41c14974620b49988c1780c7d5a75f04674e564d23c865943e8c9fe2089 [2022-11-20 20:01:46,802 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 20:01:46,831 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 20:01:46,835 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 20:01:46,836 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 20:01:46,837 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 20:01:46,838 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0813b-8b4c-44fd-8add-538ed9d685a8/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/ldv-challenges/linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-intel-ixgb-ixgb.cil.i [2022-11-20 20:01:50,032 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 20:01:50,962 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 20:01:50,963 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0813b-8b4c-44fd-8add-538ed9d685a8/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-intel-ixgb-ixgb.cil.i [2022-11-20 20:01:51,045 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0813b-8b4c-44fd-8add-538ed9d685a8/bin/utaipan-6cKwYrpEi9/data/0e6a31999/0ed4748670044ed3b11b9618108ebf2b/FLAGef684b80d [2022-11-20 20:01:51,067 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0813b-8b4c-44fd-8add-538ed9d685a8/bin/utaipan-6cKwYrpEi9/data/0e6a31999/0ed4748670044ed3b11b9618108ebf2b [2022-11-20 20:01:51,070 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 20:01:51,073 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 20:01:51,077 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 20:01:51,077 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 20:01:51,081 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 20:01:51,083 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:01:51" (1/1) ... [2022-11-20 20:01:51,084 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77f6175d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:01:51, skipping insertion in model container [2022-11-20 20:01:51,085 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:01:51" (1/1) ... [2022-11-20 20:01:51,094 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 20:01:51,380 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 20:01:52,406 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.TypeSizes.extractIntegerValue(TypeSizes.java:384) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.BitabsTranslation.abstractShiftRight(BitabsTranslation.java:159) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.constructBinaryBitwiseIntegerExpression(IntegerTranslation.java:190) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.ExpressionTranslation.constructBinaryBitwiseExpression(ExpressionTranslation.java:131) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CExpressionTranslator.handleBitshiftOperation(CExpressionTranslator.java:418) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:834) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:282) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2446) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:303) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:960) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:279) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:727) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:282) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2446) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:303) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleReturnStatement(FunctionHandler.java:540) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2061) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:193) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1087) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:232) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1087) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:232) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionDefinition(FunctionHandler.java:371) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1489) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:155) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.processTUchild(CHandler.java:3314) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2388) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:600) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:134) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.translate(MainTranslator.java:192) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.run(MainTranslator.java:115) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.(MainTranslator.java:93) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver.finish(CACSL2BoogieTranslatorObserver.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-20 20:01:52,419 INFO L158 Benchmark]: Toolchain (without parser) took 1344.54ms. Allocated memory was 130.0MB in the beginning and 176.2MB in the end (delta: 46.1MB). Free memory was 77.0MB in the beginning and 87.1MB in the end (delta: -10.1MB). Peak memory consumption was 43.1MB. Max. memory is 16.1GB. [2022-11-20 20:01:52,420 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 130.0MB. Free memory is still 105.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 20:01:52,421 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1339.68ms. Allocated memory was 130.0MB in the beginning and 176.2MB in the end (delta: 46.1MB). Free memory was 77.0MB in the beginning and 87.1MB in the end (delta: -10.1MB). Peak memory consumption was 43.1MB. Max. memory is 16.1GB. [2022-11-20 20:01:52,423 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 130.0MB. Free memory is still 105.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1339.68ms. Allocated memory was 130.0MB in the beginning and 176.2MB in the end (delta: 46.1MB). Free memory was 77.0MB in the beginning and 87.1MB in the end (delta: -10.1MB). Peak memory consumption was 43.1MB. 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_f4c0813b-8b4c-44fd-8add-538ed9d685a8/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0813b-8b4c-44fd-8add-538ed9d685a8/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_f4c0813b-8b4c-44fd-8add-538ed9d685a8/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0813b-8b4c-44fd-8add-538ed9d685a8/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-intel-ixgb-ixgb.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0813b-8b4c-44fd-8add-538ed9d685a8/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_f4c0813b-8b4c-44fd-8add-538ed9d685a8/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 81d3a41c14974620b49988c1780c7d5a75f04674e564d23c865943e8c9fe2089 --- 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 20:01:55,195 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 20:01:55,197 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 20:01:55,236 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 20:01:55,237 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 20:01:55,241 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 20:01:55,246 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 20:01:55,250 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 20:01:55,252 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 20:01:55,258 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 20:01:55,260 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 20:01:55,261 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 20:01:55,262 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 20:01:55,265 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 20:01:55,267 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 20:01:55,271 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 20:01:55,272 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 20:01:55,273 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 20:01:55,277 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 20:01:55,283 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 20:01:55,286 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 20:01:55,292 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 20:01:55,293 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 20:01:55,294 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 20:01:55,308 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 20:01:55,309 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 20:01:55,309 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 20:01:55,310 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 20:01:55,311 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 20:01:55,312 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 20:01:55,312 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 20:01:55,313 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 20:01:55,314 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 20:01:55,315 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 20:01:55,336 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 20:01:55,337 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 20:01:55,339 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 20:01:55,340 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 20:01:55,341 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 20:01:55,342 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 20:01:55,343 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 20:01:55,347 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0813b-8b4c-44fd-8add-538ed9d685a8/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-20 20:01:55,397 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 20:01:55,398 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 20:01:55,399 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 20:01:55,400 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 20:01:55,401 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 20:01:55,401 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 20:01:55,401 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 20:01:55,402 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 20:01:55,402 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 20:01:55,402 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 20:01:55,404 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 20:01:55,404 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 20:01:55,405 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 20:01:55,405 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 20:01:55,405 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 20:01:55,406 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 20:01:55,406 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 20:01:55,406 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 20:01:55,407 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-20 20:01:55,407 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-20 20:01:55,407 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 20:01:55,407 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 20:01:55,408 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 20:01:55,408 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 20:01:55,408 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 20:01:55,409 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 20:01:55,409 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:01:55,409 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 20:01:55,410 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 20:01:55,410 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 20:01:55,410 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-20 20:01:55,410 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-20 20:01:55,411 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 20:01:55,411 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 20:01:55,412 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-20 20:01:55,412 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_f4c0813b-8b4c-44fd-8add-538ed9d685a8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0813b-8b4c-44fd-8add-538ed9d685a8/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 81d3a41c14974620b49988c1780c7d5a75f04674e564d23c865943e8c9fe2089 [2022-11-20 20:01:55,830 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 20:01:55,859 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 20:01:55,862 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 20:01:55,864 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 20:01:55,866 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 20:01:55,868 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0813b-8b4c-44fd-8add-538ed9d685a8/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/ldv-challenges/linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-intel-ixgb-ixgb.cil.i [2022-11-20 20:01:59,300 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 20:02:00,190 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 20:02:00,191 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0813b-8b4c-44fd-8add-538ed9d685a8/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-intel-ixgb-ixgb.cil.i [2022-11-20 20:02:00,265 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0813b-8b4c-44fd-8add-538ed9d685a8/bin/utaipan-6cKwYrpEi9/data/56edc1222/6e18dffa51654f158c6db83a07ce058a/FLAGe28d7756a [2022-11-20 20:02:00,291 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0813b-8b4c-44fd-8add-538ed9d685a8/bin/utaipan-6cKwYrpEi9/data/56edc1222/6e18dffa51654f158c6db83a07ce058a [2022-11-20 20:02:00,301 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 20:02:00,303 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 20:02:00,306 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 20:02:00,307 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 20:02:00,343 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 20:02:00,343 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:02:00" (1/1) ... [2022-11-20 20:02:00,344 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40b61889 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:02:00, skipping insertion in model container [2022-11-20 20:02:00,344 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:02:00" (1/1) ... [2022-11-20 20:02:00,350 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 20:02:00,588 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 20:02:05,660 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_f4c0813b-8b4c-44fd-8add-538ed9d685a8/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-intel-ixgb-ixgb.cil.i[519506,519519] [2022-11-20 20:02:05,664 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_f4c0813b-8b4c-44fd-8add-538ed9d685a8/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-intel-ixgb-ixgb.cil.i[519651,519664] [2022-11-20 20:02:05,689 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:02:05,784 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-20 20:02:05,866 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 20:02:06,412 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_f4c0813b-8b4c-44fd-8add-538ed9d685a8/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-intel-ixgb-ixgb.cil.i[519506,519519] [2022-11-20 20:02:06,413 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_f4c0813b-8b4c-44fd-8add-538ed9d685a8/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-intel-ixgb-ixgb.cil.i[519651,519664] [2022-11-20 20:02:06,419 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:02:06,537 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 20:02:07,222 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_f4c0813b-8b4c-44fd-8add-538ed9d685a8/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-intel-ixgb-ixgb.cil.i[519506,519519] [2022-11-20 20:02:07,222 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_f4c0813b-8b4c-44fd-8add-538ed9d685a8/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-intel-ixgb-ixgb.cil.i[519651,519664] [2022-11-20 20:02:07,228 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:02:07,606 INFO L208 MainTranslator]: Completed translation [2022-11-20 20:02:07,607 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:02:07 WrapperNode [2022-11-20 20:02:07,607 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 20:02:07,608 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 20:02:07,609 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 20:02:07,609 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 20:02:07,617 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:02:07" (1/1) ... [2022-11-20 20:02:07,790 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:02:07" (1/1) ... [2022-11-20 20:02:08,219 INFO L138 Inliner]: procedures = 588, calls = 6348, calls flagged for inlining = 279, calls inlined = 246, statements flattened = 11857 [2022-11-20 20:02:08,220 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 20:02:08,221 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 20:02:08,221 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 20:02:08,222 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 20:02:08,232 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:02:07" (1/1) ... [2022-11-20 20:02:08,232 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:02:07" (1/1) ... [2022-11-20 20:02:08,292 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:02:07" (1/1) ... [2022-11-20 20:02:08,293 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:02:07" (1/1) ... [2022-11-20 20:02:08,536 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:02:07" (1/1) ... [2022-11-20 20:02:08,580 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:02:07" (1/1) ... [2022-11-20 20:02:08,639 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:02:07" (1/1) ... [2022-11-20 20:02:08,674 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:02:07" (1/1) ... [2022-11-20 20:02:08,741 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 20:02:08,742 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 20:02:08,742 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 20:02:08,742 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 20:02:08,743 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:02:07" (1/1) ... [2022-11-20 20:02:08,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:02:08,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0813b-8b4c-44fd-8add-538ed9d685a8/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:02:08,782 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0813b-8b4c-44fd-8add-538ed9d685a8/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 20:02:08,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0813b-8b4c-44fd-8add-538ed9d685a8/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 20:02:08,829 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-20 20:02:08,829 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-20 20:02:08,830 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-20 20:02:08,830 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-20 20:02:08,830 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-20 20:02:08,830 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-20 20:02:08,831 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_write_vfta [2022-11-20 20:02:08,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_write_vfta [2022-11-20 20:02:08,831 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-20 20:02:08,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-20 20:02:08,831 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_standby_eeprom [2022-11-20 20:02:08,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_standby_eeprom [2022-11-20 20:02:08,832 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2022-11-20 20:02:08,832 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2022-11-20 20:02:08,832 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-20 20:02:08,832 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-20 20:02:08,833 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2022-11-20 20:02:08,833 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2022-11-20 20:02:08,833 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-20 20:02:08,833 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-20 20:02:08,834 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_alloc_rx_buffers [2022-11-20 20:02:08,834 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_alloc_rx_buffers [2022-11-20 20:02:08,834 INFO L130 BoogieDeclarations]: Found specification of procedure mac_addr_valid [2022-11-20 20:02:08,834 INFO L138 BoogieDeclarations]: Found implementation of procedure mac_addr_valid [2022-11-20 20:02:08,834 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_vlan_rx_add_vid [2022-11-20 20:02:08,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_vlan_rx_add_vid [2022-11-20 20:02:08,835 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_free_tx_resources [2022-11-20 20:02:08,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_free_tx_resources [2022-11-20 20:02:08,835 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2022-11-20 20:02:08,835 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2022-11-20 20:02:08,836 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_set_multi [2022-11-20 20:02:08,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_set_multi [2022-11-20 20:02:08,836 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~C_INT~structend~~TO~C_INT [2022-11-20 20:02:08,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~C_INT~structend~~TO~C_INT [2022-11-20 20:02:08,836 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_rar_set [2022-11-20 20:02:08,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_rar_set [2022-11-20 20:02:08,837 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-11-20 20:02:08,837 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-11-20 20:02:08,837 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-20 20:02:08,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-20 20:02:08,837 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-20 20:02:08,838 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-20 20:02:08,838 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2022-11-20 20:02:08,838 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2022-11-20 20:02:08,838 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_io_resume [2022-11-20 20:02:08,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_io_resume [2022-11-20 20:02:08,839 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-20 20:02:08,839 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-20 20:02:08,839 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-20 20:02:08,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-20 20:02:08,839 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 20:02:08,840 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2022-11-20 20:02:08,840 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2022-11-20 20:02:08,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-20 20:02:08,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-11-20 20:02:08,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2022-11-20 20:02:08,841 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_validate_eeprom_checksum [2022-11-20 20:02:08,841 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_validate_eeprom_checksum [2022-11-20 20:02:08,841 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-20 20:02:08,841 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-20 20:02:08,841 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_netpoll [2022-11-20 20:02:08,842 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_netpoll [2022-11-20 20:02:08,842 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-20 20:02:08,842 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-20 20:02:08,842 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_raise_clock [2022-11-20 20:02:08,842 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_raise_clock [2022-11-20 20:02:08,843 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_write_eeprom [2022-11-20 20:02:08,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_write_eeprom [2022-11-20 20:02:08,843 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-20 20:02:08,843 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-20 20:02:08,843 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_identify_xpak_vendor [2022-11-20 20:02:08,844 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_identify_xpak_vendor [2022-11-20 20:02:08,844 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-20 20:02:08,844 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-20 20:02:08,844 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_mac_reset [2022-11-20 20:02:08,844 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_mac_reset [2022-11-20 20:02:08,845 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_read_eeprom [2022-11-20 20:02:08,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_read_eeprom [2022-11-20 20:02:08,845 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~C_ULONG~X~C_ULONG~X~C_INT~X~$Pointer$~TO~~dma_addr_t~0 [2022-11-20 20:02:08,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~C_ULONG~X~C_ULONG~X~C_INT~X~$Pointer$~TO~~dma_addr_t~0 [2022-11-20 20:02:08,845 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_free_rx_resources [2022-11-20 20:02:08,846 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_free_rx_resources [2022-11-20 20:02:08,846 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-20 20:02:08,846 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-20 20:02:08,846 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_after_alloc [2022-11-20 20:02:08,846 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_after_alloc [2022-11-20 20:02:08,847 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-20 20:02:08,847 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-20 20:02:08,847 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2022-11-20 20:02:08,847 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2022-11-20 20:02:08,847 INFO L130 BoogieDeclarations]: Found specification of procedure skb_transport_header [2022-11-20 20:02:08,848 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_transport_header [2022-11-20 20:02:08,848 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-20 20:02:08,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-20 20:02:08,848 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-20 20:02:08,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-20 20:02:08,849 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-11-20 20:02:08,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-11-20 20:02:08,849 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_get_regs_len [2022-11-20 20:02:08,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_get_regs_len [2022-11-20 20:02:08,849 INFO L130 BoogieDeclarations]: Found specification of procedure vfree [2022-11-20 20:02:08,850 INFO L138 BoogieDeclarations]: Found implementation of procedure vfree [2022-11-20 20:02:08,850 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-20 20:02:08,850 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-20 20:02:08,850 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_read_phy_reg [2022-11-20 20:02:08,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_read_phy_reg [2022-11-20 20:02:08,851 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_check_for_link [2022-11-20 20:02:08,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_check_for_link [2022-11-20 20:02:08,851 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_validate_option [2022-11-20 20:02:08,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_validate_option [2022-11-20 20:02:08,851 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 20:02:08,852 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer [2022-11-20 20:02:08,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer [2022-11-20 20:02:08,852 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_single_attrs [2022-11-20 20:02:08,852 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_single_attrs [2022-11-20 20:02:08,853 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 20:02:08,853 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2022-11-20 20:02:08,853 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2022-11-20 20:02:08,853 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-20 20:02:08,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-20 20:02:08,854 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-20 20:02:08,854 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-20 20:02:08,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 20:02:08,854 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2022-11-20 20:02:08,854 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2022-11-20 20:02:08,855 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-20 20:02:08,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-20 20:02:08,855 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2022-11-20 20:02:08,855 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_lower_clock [2022-11-20 20:02:08,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_lower_clock [2022-11-20 20:02:08,856 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_reset [2022-11-20 20:02:08,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_reset [2022-11-20 20:02:08,856 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_exclusive_spin_is_locked [2022-11-20 20:02:08,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_exclusive_spin_is_locked [2022-11-20 20:02:08,856 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert [2022-11-20 20:02:08,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert [2022-11-20 20:02:08,857 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_remove [2022-11-20 20:02:08,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_remove [2022-11-20 20:02:08,857 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-11-20 20:02:08,857 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-11-20 20:02:08,857 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_get_eeprom_len [2022-11-20 20:02:08,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_get_eeprom_len [2022-11-20 20:02:08,858 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~C_ULONG~X~C_INT~X~$Pointer$~TO~VOID [2022-11-20 20:02:08,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~C_ULONG~X~C_INT~X~$Pointer$~TO~VOID [2022-11-20 20:02:08,858 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_up [2022-11-20 20:02:08,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_up [2022-11-20 20:02:08,859 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_irq_enable [2022-11-20 20:02:08,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_irq_enable [2022-11-20 20:02:08,859 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_map_page [2022-11-20 20:02:08,860 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_map_page [2022-11-20 20:02:08,860 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-20 20:02:08,860 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-20 20:02:08,860 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-11-20 20:02:08,860 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-11-20 20:02:08,861 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_setup_tx_resources [2022-11-20 20:02:08,861 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_setup_tx_resources [2022-11-20 20:02:08,861 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_maybe_stop_tx [2022-11-20 20:02:08,861 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_maybe_stop_tx [2022-11-20 20:02:08,861 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_intr [2022-11-20 20:02:08,862 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_intr [2022-11-20 20:02:08,862 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2022-11-20 20:02:08,862 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2022-11-20 20:02:08,862 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-20 20:02:08,862 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-20 20:02:08,863 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2022-11-20 20:02:08,863 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_open [2022-11-20 20:02:08,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_open [2022-11-20 20:02:08,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 20:02:08,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 20:02:08,864 INFO L130 BoogieDeclarations]: Found specification of procedure tcp_hdr [2022-11-20 20:02:08,864 INFO L138 BoogieDeclarations]: Found implementation of procedure tcp_hdr [2022-11-20 20:02:08,864 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-11-20 20:02:08,864 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-11-20 20:02:08,864 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-11-20 20:02:08,865 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-11-20 20:02:08,865 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-20 20:02:08,865 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-20 20:02:08,865 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2022-11-20 20:02:08,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-20 20:02:08,866 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-20 20:02:08,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-20 20:02:08,866 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2022-11-20 20:02:08,866 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2022-11-20 20:02:08,866 INFO L130 BoogieDeclarations]: Found specification of procedure kmemcheck_mark_initialized [2022-11-20 20:02:08,867 INFO L138 BoogieDeclarations]: Found implementation of procedure kmemcheck_mark_initialized [2022-11-20 20:02:08,867 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_update_stats [2022-11-20 20:02:08,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_update_stats [2022-11-20 20:02:08,867 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2022-11-20 20:02:08,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2022-11-20 20:02:08,868 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_check_and_get_eeprom_data [2022-11-20 20:02:08,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_check_and_get_eeprom_data [2022-11-20 20:02:08,868 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_cmd_speed_set [2022-11-20 20:02:08,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_cmd_speed_set [2022-11-20 20:02:08,868 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-20 20:02:08,869 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-20 20:02:08,869 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-20 20:02:08,869 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-20 20:02:08,869 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb_ip_align [2022-11-20 20:02:08,869 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb_ip_align [2022-11-20 20:02:08,869 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_close [2022-11-20 20:02:08,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_close [2022-11-20 20:02:08,870 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_unmap_page [2022-11-20 20:02:08,870 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_unmap_page [2022-11-20 20:02:08,870 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_single_attrs [2022-11-20 20:02:08,870 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_single_attrs [2022-11-20 20:02:08,871 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-20 20:02:08,871 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-20 20:02:08,871 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2022-11-20 20:02:08,871 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2022-11-20 20:02:08,871 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 20:02:08,872 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_master [2022-11-20 20:02:08,872 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_master [2022-11-20 20:02:08,872 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-20 20:02:08,872 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-20 20:02:08,872 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 20:02:08,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-11-20 20:02:08,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-11-20 20:02:08,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2022-11-20 20:02:08,873 INFO L130 BoogieDeclarations]: Found specification of procedure is_zero_ether_addr [2022-11-20 20:02:08,873 INFO L138 BoogieDeclarations]: Found implementation of procedure is_zero_ether_addr [2022-11-20 20:02:08,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-20 20:02:08,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-20 20:02:08,874 INFO L130 BoogieDeclarations]: Found specification of procedure dma_mapping_error [2022-11-20 20:02:08,874 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_mapping_error [2022-11-20 20:02:08,874 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-20 20:02:08,874 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-20 20:02:08,875 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-20 20:02:08,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-20 20:02:08,875 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-20 20:02:08,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-20 20:02:08,875 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_link_reset [2022-11-20 20:02:08,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_link_reset [2022-11-20 20:02:08,876 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_set_speed_duplex [2022-11-20 20:02:08,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_set_speed_duplex [2022-11-20 20:02:08,876 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2022-11-20 20:02:08,876 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2022-11-20 20:02:08,876 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_nonatomic [2022-11-20 20:02:08,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_nonatomic [2022-11-20 20:02:08,877 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-11-20 20:02:08,877 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-11-20 20:02:08,877 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-20 20:02:08,877 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-20 20:02:08,878 INFO L130 BoogieDeclarations]: Found specification of procedure skb_transport_offset [2022-11-20 20:02:08,878 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_transport_offset [2022-11-20 20:02:08,878 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~C_INT [2022-11-20 20:02:08,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~C_INT [2022-11-20 20:02:08,878 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-20 20:02:08,878 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-20 20:02:08,879 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_unmap_and_free_tx_resource [2022-11-20 20:02:08,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_unmap_and_free_tx_resource [2022-11-20 20:02:08,879 INFO L130 BoogieDeclarations]: Found specification of procedure skb_network_header [2022-11-20 20:02:08,879 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_network_header [2022-11-20 20:02:08,879 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-20 20:02:08,880 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-20 20:02:08,880 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_setup_eeprom [2022-11-20 20:02:08,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_setup_eeprom [2022-11-20 20:02:08,880 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2022-11-20 20:02:08,880 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2022-11-20 20:02:08,881 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-11-20 20:02:08,881 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2022-11-20 20:02:08,881 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-20 20:02:08,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-20 20:02:08,881 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_write_phy_reg [2022-11-20 20:02:08,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_write_phy_reg [2022-11-20 20:02:08,882 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-11-20 20:02:08,882 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-11-20 20:02:08,882 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_get_ee_mac_addr [2022-11-20 20:02:08,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_get_ee_mac_addr [2022-11-20 20:02:08,882 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2022-11-20 20:02:08,882 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2022-11-20 20:02:08,883 INFO L130 BoogieDeclarations]: Found specification of procedure dma_set_mask_and_coherent [2022-11-20 20:02:08,883 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_set_mask_and_coherent [2022-11-20 20:02:08,883 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_clean_tx_ring [2022-11-20 20:02:08,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_clean_tx_ring [2022-11-20 20:02:08,883 INFO L130 BoogieDeclarations]: Found specification of procedure is_multicast_ether_addr [2022-11-20 20:02:08,884 INFO L138 BoogieDeclarations]: Found implementation of procedure is_multicast_ether_addr [2022-11-20 20:02:08,884 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2022-11-20 20:02:08,884 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2022-11-20 20:02:08,884 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_clean_rx_ring [2022-11-20 20:02:08,884 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_clean_rx_ring [2022-11-20 20:02:08,884 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_shift_out_bits [2022-11-20 20:02:08,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_shift_out_bits [2022-11-20 20:02:08,885 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_down [2022-11-20 20:02:08,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_down [2022-11-20 20:02:08,885 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_tx_timeout [2022-11-20 20:02:08,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_tx_timeout [2022-11-20 20:02:08,885 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_setup_rx_resources [2022-11-20 20:02:08,886 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_setup_rx_resources [2022-11-20 20:02:08,886 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-20 20:02:08,886 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-20 20:02:08,886 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2022-11-20 20:02:08,886 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2022-11-20 20:02:08,887 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_msi [2022-11-20 20:02:08,887 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_msi [2022-11-20 20:02:08,887 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2022-11-20 20:02:08,887 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2022-11-20 20:02:08,887 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-20 20:02:08,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-20 20:02:08,888 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2022-11-20 20:02:08,888 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_get_eeprom_data [2022-11-20 20:02:08,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_get_eeprom_data [2022-11-20 20:02:10,440 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 20:02:10,443 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 20:02:11,819 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-20 20:04:51,908 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 20:04:51,932 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 20:04:51,933 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 20:04:51,938 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:04:51 BoogieIcfgContainer [2022-11-20 20:04:51,939 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 20:04:51,941 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 20:04:51,941 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 20:04:51,945 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 20:04:51,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 08:02:00" (1/3) ... [2022-11-20 20:04:51,947 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@729036c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:04:51, skipping insertion in model container [2022-11-20 20:04:51,947 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:02:07" (2/3) ... [2022-11-20 20:04:51,947 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@729036c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:04:51, skipping insertion in model container [2022-11-20 20:04:51,947 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:04:51" (3/3) ... [2022-11-20 20:04:51,949 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-intel-ixgb-ixgb.cil.i [2022-11-20 20:04:51,970 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 20:04:51,970 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-20 20:04:52,109 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 20:04:52,122 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;@604969ff, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 20:04:52,122 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-20 20:04:52,140 INFO L276 IsEmpty]: Start isEmpty. Operand has 3068 states, 2040 states have (on average 1.2490196078431373) internal successors, (2548), 2084 states have internal predecessors, (2548), 891 states have call successors, (891), 135 states have call predecessors, (891), 134 states have return successors, (887), 874 states have call predecessors, (887), 887 states have call successors, (887) [2022-11-20 20:04:52,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-11-20 20:04:52,188 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:04:52,190 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:04:52,191 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:04:52,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:04:52,199 INFO L85 PathProgramCache]: Analyzing trace with hash -47741034, now seen corresponding path program 1 times [2022-11-20 20:04:52,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 20:04:52,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1370036384] [2022-11-20 20:04:52,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:04:52,227 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 20:04:52,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0813b-8b4c-44fd-8add-538ed9d685a8/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 20:04:52,233 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0813b-8b4c-44fd-8add-538ed9d685a8/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 20:04:52,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0813b-8b4c-44fd-8add-538ed9d685a8/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 20:04:57,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:04:57,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 4374 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-20 20:04:57,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:04:59,544 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2022-11-20 20:04:59,545 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 20:04:59,545 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 20:04:59,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1370036384] [2022-11-20 20:04:59,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1370036384] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:04:59,547 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:04:59,547 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-20 20:04:59,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679562358] [2022-11-20 20:04:59,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:04:59,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 20:04:59,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 20:04:59,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 20:04:59,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2022-11-20 20:04:59,606 INFO L87 Difference]: Start difference. First operand has 3068 states, 2040 states have (on average 1.2490196078431373) internal successors, (2548), 2084 states have internal predecessors, (2548), 891 states have call successors, (891), 135 states have call predecessors, (891), 134 states have return successors, (887), 874 states have call predecessors, (887), 887 states have call successors, (887) Second operand has 13 states, 10 states have (on average 8.3) internal successors, (83), 9 states have internal predecessors, (83), 5 states have call successors, (25), 2 states have call predecessors, (25), 5 states have return successors, (21), 6 states have call predecessors, (21), 5 states have call successors, (21) [2022-11-20 20:05:03,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:05:03,219 INFO L93 Difference]: Finished difference Result 6136 states and 8753 transitions. [2022-11-20 20:05:03,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 20:05:03,222 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 10 states have (on average 8.3) internal successors, (83), 9 states have internal predecessors, (83), 5 states have call successors, (25), 2 states have call predecessors, (25), 5 states have return successors, (21), 6 states have call predecessors, (21), 5 states have call successors, (21) Word has length 163 [2022-11-20 20:05:03,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:05:03,279 INFO L225 Difference]: With dead ends: 6136 [2022-11-20 20:05:03,280 INFO L226 Difference]: Without dead ends: 3000 [2022-11-20 20:05:03,318 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2022-11-20 20:05:03,324 INFO L413 NwaCegarLoop]: 4293 mSDtfsCounter, 918 mSDsluCounter, 28775 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1202 SdHoareTripleChecker+Valid, 33068 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-20 20:05:03,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1202 Valid, 33068 Invalid, 379 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [6 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-20 20:05:03,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3000 states. [2022-11-20 20:05:03,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3000 to 2998. [2022-11-20 20:05:03,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2998 states, 2003 states have (on average 1.237643534697953) internal successors, (2479), 2043 states have internal predecessors, (2479), 861 states have call successors, (861), 132 states have call predecessors, (861), 132 states have return successors, (861), 848 states have call predecessors, (861), 861 states have call successors, (861) [2022-11-20 20:05:03,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2998 states to 2998 states and 4201 transitions. [2022-11-20 20:05:03,726 INFO L78 Accepts]: Start accepts. Automaton has 2998 states and 4201 transitions. Word has length 163 [2022-11-20 20:05:03,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:05:03,729 INFO L495 AbstractCegarLoop]: Abstraction has 2998 states and 4201 transitions. [2022-11-20 20:05:03,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 10 states have (on average 8.3) internal successors, (83), 9 states have internal predecessors, (83), 5 states have call successors, (25), 2 states have call predecessors, (25), 5 states have return successors, (21), 6 states have call predecessors, (21), 5 states have call successors, (21) [2022-11-20 20:05:03,736 INFO L276 IsEmpty]: Start isEmpty. Operand 2998 states and 4201 transitions. [2022-11-20 20:05:03,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-11-20 20:05:03,751 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:05:03,752 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:05:03,837 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0813b-8b4c-44fd-8add-538ed9d685a8/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 20:05:03,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0813b-8b4c-44fd-8add-538ed9d685a8/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 20:05:03,975 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:05:03,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:05:03,976 INFO L85 PathProgramCache]: Analyzing trace with hash 990326489, now seen corresponding path program 1 times [2022-11-20 20:05:03,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 20:05:03,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [635585040] [2022-11-20 20:05:03,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:05:03,982 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 20:05:03,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0813b-8b4c-44fd-8add-538ed9d685a8/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 20:05:03,987 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0813b-8b4c-44fd-8add-538ed9d685a8/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 20:05:04,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0813b-8b4c-44fd-8add-538ed9d685a8/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 20:05:09,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:05:09,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 4386 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 20:05:09,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:05:09,995 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2022-11-20 20:05:09,995 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 20:05:09,995 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 20:05:09,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [635585040] [2022-11-20 20:05:09,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [635585040] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:05:09,996 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:05:09,996 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 20:05:09,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182741072] [2022-11-20 20:05:09,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:05:09,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 20:05:09,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 20:05:09,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 20:05:10,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-11-20 20:05:10,000 INFO L87 Difference]: Start difference. First operand 2998 states and 4201 transitions. Second operand has 12 states, 11 states have (on average 6.909090909090909) internal successors, (76), 11 states have internal predecessors, (76), 5 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (19), 5 states have call predecessors, (19), 5 states have call successors, (19) [2022-11-20 20:05:15,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:05:15,511 INFO L93 Difference]: Finished difference Result 7697 states and 10952 transitions. [2022-11-20 20:05:15,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-20 20:05:15,512 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.909090909090909) internal successors, (76), 11 states have internal predecessors, (76), 5 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (19), 5 states have call predecessors, (19), 5 states have call successors, (19) Word has length 167 [2022-11-20 20:05:15,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:05:15,565 INFO L225 Difference]: With dead ends: 7697 [2022-11-20 20:05:15,566 INFO L226 Difference]: Without dead ends: 4715 [2022-11-20 20:05:15,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=90, Invalid=372, Unknown=0, NotChecked=0, Total=462 [2022-11-20 20:05:15,593 INFO L413 NwaCegarLoop]: 5681 mSDtfsCounter, 2422 mSDsluCounter, 53371 mSDsCounter, 0 mSdLazyCounter, 514 mSolverCounterSat, 743 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2666 SdHoareTripleChecker+Valid, 59052 SdHoareTripleChecker+Invalid, 1257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 743 IncrementalHoareTripleChecker+Valid, 514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-20 20:05:15,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2666 Valid, 59052 Invalid, 1257 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [743 Valid, 514 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-11-20 20:05:15,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4715 states. [2022-11-20 20:05:15,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4715 to 3006. [2022-11-20 20:05:15,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3006 states, 2009 states have (on average 1.2369337979094077) internal successors, (2485), 2049 states have internal predecessors, (2485), 863 states have call successors, (863), 132 states have call predecessors, (863), 132 states have return successors, (863), 850 states have call predecessors, (863), 863 states have call successors, (863) [2022-11-20 20:05:15,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3006 states to 3006 states and 4211 transitions. [2022-11-20 20:05:15,963 INFO L78 Accepts]: Start accepts. Automaton has 3006 states and 4211 transitions. Word has length 167 [2022-11-20 20:05:15,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:05:15,963 INFO L495 AbstractCegarLoop]: Abstraction has 3006 states and 4211 transitions. [2022-11-20 20:05:15,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.909090909090909) internal successors, (76), 11 states have internal predecessors, (76), 5 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (19), 5 states have call predecessors, (19), 5 states have call successors, (19) [2022-11-20 20:05:15,964 INFO L276 IsEmpty]: Start isEmpty. Operand 3006 states and 4211 transitions. [2022-11-20 20:05:15,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2022-11-20 20:05:15,969 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:05:15,969 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:05:16,053 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0813b-8b4c-44fd-8add-538ed9d685a8/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 20:05:16,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0813b-8b4c-44fd-8add-538ed9d685a8/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 20:05:16,170 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:05:16,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:05:16,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1337921148, now seen corresponding path program 1 times [2022-11-20 20:05:16,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 20:05:16,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [958897250] [2022-11-20 20:05:16,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:05:16,177 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 20:05:16,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0813b-8b4c-44fd-8add-538ed9d685a8/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 20:05:16,183 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0813b-8b4c-44fd-8add-538ed9d685a8/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 20:05:16,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0813b-8b4c-44fd-8add-538ed9d685a8/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 20:05:21,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:05:21,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 4432 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 20:05:21,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:05:21,648 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2022-11-20 20:05:21,649 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 20:05:21,649 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 20:05:21,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [958897250] [2022-11-20 20:05:21,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [958897250] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:05:21,653 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:05:21,653 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 20:05:21,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750890553] [2022-11-20 20:05:21,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:05:21,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 20:05:21,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 20:05:21,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 20:05:21,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 20:05:21,661 INFO L87 Difference]: Start difference. First operand 3006 states and 4211 transitions. Second operand has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 5 states have internal predecessors, (89), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-20 20:05:24,039 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 20:05:24,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:05:24,437 INFO L93 Difference]: Finished difference Result 6101 states and 8559 transitions. [2022-11-20 20:05:24,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 20:05:24,439 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 5 states have internal predecessors, (89), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) Word has length 184 [2022-11-20 20:05:24,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:05:24,463 INFO L225 Difference]: With dead ends: 6101 [2022-11-20 20:05:24,464 INFO L226 Difference]: Without dead ends: 3112 [2022-11-20 20:05:24,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 20:05:24,483 INFO L413 NwaCegarLoop]: 4233 mSDtfsCounter, 98 mSDsluCounter, 16858 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 10 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 21091 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-20 20:05:24,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 21091 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 37 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-11-20 20:05:24,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3112 states. [2022-11-20 20:05:24,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3112 to 3011. [2022-11-20 20:05:24,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3011 states, 2013 states have (on average 1.2364629905613511) internal successors, (2489), 2053 states have internal predecessors, (2489), 863 states have call successors, (863), 132 states have call predecessors, (863), 133 states have return successors, (865), 851 states have call predecessors, (865), 863 states have call successors, (865) [2022-11-20 20:05:24,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3011 states to 3011 states and 4217 transitions. [2022-11-20 20:05:24,768 INFO L78 Accepts]: Start accepts. Automaton has 3011 states and 4217 transitions. Word has length 184 [2022-11-20 20:05:24,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:05:24,769 INFO L495 AbstractCegarLoop]: Abstraction has 3011 states and 4217 transitions. [2022-11-20 20:05:24,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 5 states have internal predecessors, (89), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-20 20:05:24,773 INFO L276 IsEmpty]: Start isEmpty. Operand 3011 states and 4217 transitions. [2022-11-20 20:05:24,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2022-11-20 20:05:24,778 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:05:24,778 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:05:24,862 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0813b-8b4c-44fd-8add-538ed9d685a8/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 20:05:25,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0813b-8b4c-44fd-8add-538ed9d685a8/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 20:05:25,003 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:05:25,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:05:25,004 INFO L85 PathProgramCache]: Analyzing trace with hash 632299396, now seen corresponding path program 1 times [2022-11-20 20:05:25,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 20:05:25,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [160338695] [2022-11-20 20:05:25,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:05:25,009 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 20:05:25,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0813b-8b4c-44fd-8add-538ed9d685a8/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 20:05:25,012 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0813b-8b4c-44fd-8add-538ed9d685a8/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 20:05:25,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0813b-8b4c-44fd-8add-538ed9d685a8/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 20:05:30,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:05:30,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 4448 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 20:05:30,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:05:31,097 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2022-11-20 20:05:31,097 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 20:05:31,097 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 20:05:31,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [160338695] [2022-11-20 20:05:31,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [160338695] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:05:31,098 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:05:31,098 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-20 20:05:31,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471268701] [2022-11-20 20:05:31,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:05:31,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 20:05:31,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 20:05:31,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 20:05:31,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2022-11-20 20:05:31,101 INFO L87 Difference]: Start difference. First operand 3011 states and 4217 transitions. Second operand has 13 states, 12 states have (on average 7.666666666666667) internal successors, (92), 12 states have internal predecessors, (92), 6 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (21), 6 states have call predecessors, (21), 6 states have call successors, (21) [2022-11-20 20:05:35,686 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:05:38,284 WARN L539 Checker$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 20:05:43,165 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 20:05:43,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:05:43,523 INFO L93 Difference]: Finished difference Result 7731 states and 10996 transitions. [2022-11-20 20:05:43,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-20 20:05:43,524 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 7.666666666666667) internal successors, (92), 12 states have internal predecessors, (92), 6 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (21), 6 states have call predecessors, (21), 6 states have call successors, (21) Word has length 187 [2022-11-20 20:05:43,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:05:43,574 INFO L225 Difference]: With dead ends: 7731 [2022-11-20 20:05:43,574 INFO L226 Difference]: Without dead ends: 4736 [2022-11-20 20:05:43,598 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=130, Invalid=520, Unknown=0, NotChecked=0, Total=650 [2022-11-20 20:05:43,601 INFO L413 NwaCegarLoop]: 5672 mSDtfsCounter, 2444 mSDsluCounter, 58888 mSDsCounter, 0 mSdLazyCounter, 591 mSolverCounterSat, 783 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2687 SdHoareTripleChecker+Valid, 64560 SdHoareTripleChecker+Invalid, 1377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 783 IncrementalHoareTripleChecker+Valid, 591 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time [2022-11-20 20:05:43,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2687 Valid, 64560 Invalid, 1377 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [783 Valid, 591 Invalid, 3 Unknown, 0 Unchecked, 10.4s Time] [2022-11-20 20:05:43,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4736 states. [2022-11-20 20:05:44,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4736 to 3011. [2022-11-20 20:05:44,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3011 states, 2013 states have (on average 1.2364629905613511) internal successors, (2489), 2053 states have internal predecessors, (2489), 863 states have call successors, (863), 132 states have call predecessors, (863), 133 states have return successors, (865), 851 states have call predecessors, (865), 863 states have call successors, (865) [2022-11-20 20:05:44,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3011 states to 3011 states and 4217 transitions. [2022-11-20 20:05:44,094 INFO L78 Accepts]: Start accepts. Automaton has 3011 states and 4217 transitions. Word has length 187 [2022-11-20 20:05:44,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:05:44,095 INFO L495 AbstractCegarLoop]: Abstraction has 3011 states and 4217 transitions. [2022-11-20 20:05:44,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 7.666666666666667) internal successors, (92), 12 states have internal predecessors, (92), 6 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (21), 6 states have call predecessors, (21), 6 states have call successors, (21) [2022-11-20 20:05:44,096 INFO L276 IsEmpty]: Start isEmpty. Operand 3011 states and 4217 transitions. [2022-11-20 20:05:44,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2022-11-20 20:05:44,102 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:05:44,103 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:05:44,189 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0813b-8b4c-44fd-8add-538ed9d685a8/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 20:05:44,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0813b-8b4c-44fd-8add-538ed9d685a8/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 20:05:44,319 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:05:44,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:05:44,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1553158784, now seen corresponding path program 1 times [2022-11-20 20:05:44,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 20:05:44,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [445357305] [2022-11-20 20:05:44,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:05:44,324 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 20:05:44,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0813b-8b4c-44fd-8add-538ed9d685a8/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 20:05:44,326 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0813b-8b4c-44fd-8add-538ed9d685a8/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 20:05:44,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0813b-8b4c-44fd-8add-538ed9d685a8/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 20:06:18,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:06:19,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 20527 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 20:06:19,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:06:19,348 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2022-11-20 20:06:19,348 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 20:06:19,349 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 20:06:19,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [445357305] [2022-11-20 20:06:19,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [445357305] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:06:19,349 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:06:19,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 20:06:19,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458767828] [2022-11-20 20:06:19,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:06:19,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 20:06:19,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 20:06:19,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 20:06:19,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 20:06:19,352 INFO L87 Difference]: Start difference. First operand 3011 states and 4217 transitions. Second operand has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 2 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2022-11-20 20:06:21,797 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 20:06:23,580 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:06:23,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:06:23,910 INFO L93 Difference]: Finished difference Result 6058 states and 8487 transitions. [2022-11-20 20:06:23,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 20:06:23,912 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 2 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) Word has length 303 [2022-11-20 20:06:23,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:06:23,936 INFO L225 Difference]: With dead ends: 6058 [2022-11-20 20:06:23,937 INFO L226 Difference]: Without dead ends: 3064 [2022-11-20 20:06:23,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 301 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-20 20:06:23,956 INFO L413 NwaCegarLoop]: 4254 mSDtfsCounter, 85 mSDsluCounter, 12604 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 33 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 16858 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:06:23,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 16858 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 25 Invalid, 1 Unknown, 0 Unchecked, 4.1s Time] [2022-11-20 20:06:23,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3064 states. [2022-11-20 20:06:24,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3064 to 3014. [2022-11-20 20:06:24,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3014 states, 2016 states have (on average 1.2361111111111112) internal successors, (2492), 2056 states have internal predecessors, (2492), 863 states have call successors, (863), 132 states have call predecessors, (863), 133 states have return successors, (865), 851 states have call predecessors, (865), 863 states have call successors, (865) [2022-11-20 20:06:24,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3014 states to 3014 states and 4220 transitions. [2022-11-20 20:06:24,259 INFO L78 Accepts]: Start accepts. Automaton has 3014 states and 4220 transitions. Word has length 303 [2022-11-20 20:06:24,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:06:24,260 INFO L495 AbstractCegarLoop]: Abstraction has 3014 states and 4220 transitions. [2022-11-20 20:06:24,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 2 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2022-11-20 20:06:24,261 INFO L276 IsEmpty]: Start isEmpty. Operand 3014 states and 4220 transitions. [2022-11-20 20:06:24,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2022-11-20 20:06:24,266 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:06:24,267 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:06:24,476 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0813b-8b4c-44fd-8add-538ed9d685a8/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 20:06:24,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0813b-8b4c-44fd-8add-538ed9d685a8/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 20:06:24,483 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:06:24,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:06:24,484 INFO L85 PathProgramCache]: Analyzing trace with hash 68392607, now seen corresponding path program 1 times [2022-11-20 20:06:24,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 20:06:24,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1786133664] [2022-11-20 20:06:24,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:06:24,491 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 20:06:24,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0813b-8b4c-44fd-8add-538ed9d685a8/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 20:06:24,493 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0813b-8b4c-44fd-8add-538ed9d685a8/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 20:06:24,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0813b-8b4c-44fd-8add-538ed9d685a8/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 20:06:59,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:07:00,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 20576 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-20 20:07:00,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:07:01,108 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2022-11-20 20:07:01,112 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 20:07:01,112 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 20:07:01,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1786133664] [2022-11-20 20:07:01,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1786133664] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:07:01,113 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:07:01,113 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 20:07:01,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46859571] [2022-11-20 20:07:01,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:07:01,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 20:07:01,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 20:07:01,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 20:07:01,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 20:07:01,127 INFO L87 Difference]: Start difference. First operand 3014 states and 4220 transitions. Second operand has 6 states, 6 states have (on average 27.333333333333332) internal successors, (164), 5 states have internal predecessors, (164), 2 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (37), 3 states have call predecessors, (37), 2 states have call successors, (37) [2022-11-20 20:07:01,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:07:01,705 INFO L93 Difference]: Finished difference Result 6075 states and 8513 transitions. [2022-11-20 20:07:01,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 20:07:01,707 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 27.333333333333332) internal successors, (164), 5 states have internal predecessors, (164), 2 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (37), 3 states have call predecessors, (37), 2 states have call successors, (37) Word has length 324 [2022-11-20 20:07:01,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:07:01,741 INFO L225 Difference]: With dead ends: 6075 [2022-11-20 20:07:01,741 INFO L226 Difference]: Without dead ends: 3078 [2022-11-20 20:07:01,759 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 319 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 20:07:01,760 INFO L413 NwaCegarLoop]: 4273 mSDtfsCounter, 46 mSDsluCounter, 17020 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 21293 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 20:07:01,760 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 21293 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 20:07:01,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3078 states. [2022-11-20 20:07:02,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3078 to 3019. [2022-11-20 20:07:02,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3019 states, 2020 states have (on average 1.2356435643564356) internal successors, (2496), 2060 states have internal predecessors, (2496), 863 states have call successors, (863), 132 states have call predecessors, (863), 134 states have return successors, (869), 852 states have call predecessors, (869), 863 states have call successors, (869) [2022-11-20 20:07:02,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3019 states to 3019 states and 4228 transitions. [2022-11-20 20:07:02,227 INFO L78 Accepts]: Start accepts. Automaton has 3019 states and 4228 transitions. Word has length 324 [2022-11-20 20:07:02,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:07:02,228 INFO L495 AbstractCegarLoop]: Abstraction has 3019 states and 4228 transitions. [2022-11-20 20:07:02,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.333333333333332) internal successors, (164), 5 states have internal predecessors, (164), 2 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (37), 3 states have call predecessors, (37), 2 states have call successors, (37) [2022-11-20 20:07:02,228 INFO L276 IsEmpty]: Start isEmpty. Operand 3019 states and 4228 transitions. [2022-11-20 20:07:02,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2022-11-20 20:07:02,235 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:07:02,236 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:07:02,447 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0813b-8b4c-44fd-8add-538ed9d685a8/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 20:07:02,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0813b-8b4c-44fd-8add-538ed9d685a8/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 20:07:02,459 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:07:02,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:07:02,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1411863223, now seen corresponding path program 1 times [2022-11-20 20:07:02,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 20:07:02,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1305286136] [2022-11-20 20:07:02,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:07:02,464 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 20:07:02,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0813b-8b4c-44fd-8add-538ed9d685a8/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 20:07:02,465 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0813b-8b4c-44fd-8add-538ed9d685a8/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 20:07:02,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0813b-8b4c-44fd-8add-538ed9d685a8/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 20:07:39,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:07:40,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 20610 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 20:07:40,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:07:40,680 INFO L134 CoverageAnalysis]: Checked inductivity of 515 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 445 trivial. 0 not checked. [2022-11-20 20:07:40,680 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 20:07:40,681 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 20:07:40,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1305286136] [2022-11-20 20:07:40,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1305286136] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:07:40,681 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:07:40,682 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:07:40,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688449645] [2022-11-20 20:07:40,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:07:40,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:07:40,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 20:07:40,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:07:40,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:07:40,684 INFO L87 Difference]: Start difference. First operand 3019 states and 4228 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 2 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2022-11-20 20:07:42,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:07:42,057 INFO L93 Difference]: Finished difference Result 6937 states and 9808 transitions. [2022-11-20 20:07:42,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:07:42,061 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 2 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) Word has length 340 [2022-11-20 20:07:42,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:07:42,093 INFO L225 Difference]: With dead ends: 6937 [2022-11-20 20:07:42,093 INFO L226 Difference]: Without dead ends: 3935 [2022-11-20 20:07:42,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 338 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 20:07:42,110 INFO L413 NwaCegarLoop]: 4923 mSDtfsCounter, 840 mSDsluCounter, 4320 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1101 SdHoareTripleChecker+Valid, 9243 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-20 20:07:42,111 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1101 Valid, 9243 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-20 20:07:42,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3935 states. [2022-11-20 20:07:42,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3935 to 3020. [2022-11-20 20:07:42,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3020 states, 2021 states have (on average 1.235526966848095) internal successors, (2497), 2061 states have internal predecessors, (2497), 863 states have call successors, (863), 132 states have call predecessors, (863), 134 states have return successors, (869), 852 states have call predecessors, (869), 863 states have call successors, (869) [2022-11-20 20:07:42,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3020 states to 3020 states and 4229 transitions. [2022-11-20 20:07:42,464 INFO L78 Accepts]: Start accepts. Automaton has 3020 states and 4229 transitions. Word has length 340 [2022-11-20 20:07:42,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:07:42,465 INFO L495 AbstractCegarLoop]: Abstraction has 3020 states and 4229 transitions. [2022-11-20 20:07:42,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 2 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2022-11-20 20:07:42,465 INFO L276 IsEmpty]: Start isEmpty. Operand 3020 states and 4229 transitions. [2022-11-20 20:07:42,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2022-11-20 20:07:42,473 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:07:42,474 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:07:42,654 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0813b-8b4c-44fd-8add-538ed9d685a8/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 20:07:42,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0813b-8b4c-44fd-8add-538ed9d685a8/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 20:07:42,687 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:07:42,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:07:42,688 INFO L85 PathProgramCache]: Analyzing trace with hash -822704128, now seen corresponding path program 1 times [2022-11-20 20:07:42,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 20:07:42,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1706844174] [2022-11-20 20:07:42,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:07:42,692 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 20:07:42,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0813b-8b4c-44fd-8add-538ed9d685a8/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 20:07:42,694 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0813b-8b4c-44fd-8add-538ed9d685a8/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 20:07:42,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0813b-8b4c-44fd-8add-538ed9d685a8/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 20:08:20,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:08:21,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 20648 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 20:08:21,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:08:21,668 INFO L134 CoverageAnalysis]: Checked inductivity of 515 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 445 trivial. 0 not checked. [2022-11-20 20:08:21,668 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 20:08:21,668 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 20:08:21,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1706844174] [2022-11-20 20:08:21,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1706844174] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:08:21,669 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:08:21,669 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 20:08:21,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976743689] [2022-11-20 20:08:21,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:08:21,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 20:08:21,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 20:08:21,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 20:08:21,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 20:08:21,672 INFO L87 Difference]: Start difference. First operand 3020 states and 4229 transitions. Second operand has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 2 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2022-11-20 20:08:22,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:08:22,207 INFO L93 Difference]: Finished difference Result 6026 states and 8440 transitions. [2022-11-20 20:08:22,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 20:08:22,210 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 2 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) Word has length 346 [2022-11-20 20:08:22,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:08:22,242 INFO L225 Difference]: With dead ends: 6026 [2022-11-20 20:08:22,242 INFO L226 Difference]: Without dead ends: 3023 [2022-11-20 20:08:22,257 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 343 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 20:08:22,258 INFO L413 NwaCegarLoop]: 4199 mSDtfsCounter, 2 mSDsluCounter, 8389 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 12588 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 20:08:22,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 12588 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 20:08:22,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3023 states. [2022-11-20 20:08:22,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3023 to 3022. [2022-11-20 20:08:22,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3022 states, 2023 states have (on average 1.2352941176470589) internal successors, (2499), 2063 states have internal predecessors, (2499), 863 states have call successors, (863), 132 states have call predecessors, (863), 134 states have return successors, (869), 852 states have call predecessors, (869), 863 states have call successors, (869) [2022-11-20 20:08:22,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3022 states to 3022 states and 4231 transitions. [2022-11-20 20:08:22,609 INFO L78 Accepts]: Start accepts. Automaton has 3022 states and 4231 transitions. Word has length 346 [2022-11-20 20:08:22,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:08:22,610 INFO L495 AbstractCegarLoop]: Abstraction has 3022 states and 4231 transitions. [2022-11-20 20:08:22,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 2 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2022-11-20 20:08:22,611 INFO L276 IsEmpty]: Start isEmpty. Operand 3022 states and 4231 transitions. [2022-11-20 20:08:22,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2022-11-20 20:08:22,614 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:08:22,615 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:08:22,836 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0813b-8b4c-44fd-8add-538ed9d685a8/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 20:08:22,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0813b-8b4c-44fd-8add-538ed9d685a8/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 20:08:22,839 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:08:22,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:08:22,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1629787454, now seen corresponding path program 1 times [2022-11-20 20:08:22,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 20:08:22,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [838227979] [2022-11-20 20:08:22,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:08:22,848 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 20:08:22,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0813b-8b4c-44fd-8add-538ed9d685a8/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 20:08:22,849 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0813b-8b4c-44fd-8add-538ed9d685a8/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 20:08:22,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0813b-8b4c-44fd-8add-538ed9d685a8/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 (10)] Waiting until timeout for monitored process [2022-11-20 20:09:02,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:09:03,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 20651 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 20:09:03,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:09:03,763 INFO L134 CoverageAnalysis]: Checked inductivity of 515 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 445 trivial. 0 not checked. [2022-11-20 20:09:03,763 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 20:09:03,763 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 20:09:03,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [838227979] [2022-11-20 20:09:03,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [838227979] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:09:03,764 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:09:03,764 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:09:03,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375419730] [2022-11-20 20:09:03,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:09:03,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:09:03,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 20:09:03,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:09:03,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:09:03,767 INFO L87 Difference]: Start difference. First operand 3022 states and 4231 transitions. Second operand has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 3 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) [2022-11-20 20:09:05,697 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 20:09:06,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:09:06,012 INFO L93 Difference]: Finished difference Result 6981 states and 9867 transitions. [2022-11-20 20:09:06,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:09:06,036 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 3 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) Word has length 346 [2022-11-20 20:09:06,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:09:06,062 INFO L225 Difference]: With dead ends: 6981 [2022-11-20 20:09:06,063 INFO L226 Difference]: Without dead ends: 3976 [2022-11-20 20:09:06,079 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 344 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 20:09:06,080 INFO L413 NwaCegarLoop]: 4487 mSDtfsCounter, 827 mSDsluCounter, 4204 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1086 SdHoareTripleChecker+Valid, 8691 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-20 20:09:06,080 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1086 Valid, 8691 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-20 20:09:06,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3976 states. [2022-11-20 20:09:06,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3976 to 3080. [2022-11-20 20:09:06,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3080 states, 2072 states have (on average 1.2379343629343629) internal successors, (2565), 2112 states have internal predecessors, (2565), 872 states have call successors, (872), 132 states have call predecessors, (872), 134 states have return successors, (880), 861 states have call predecessors, (880), 872 states have call successors, (880) [2022-11-20 20:09:06,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3080 states to 3080 states and 4317 transitions. [2022-11-20 20:09:06,452 INFO L78 Accepts]: Start accepts. Automaton has 3080 states and 4317 transitions. Word has length 346 [2022-11-20 20:09:06,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:09:06,453 INFO L495 AbstractCegarLoop]: Abstraction has 3080 states and 4317 transitions. [2022-11-20 20:09:06,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 3 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) [2022-11-20 20:09:06,454 INFO L276 IsEmpty]: Start isEmpty. Operand 3080 states and 4317 transitions. [2022-11-20 20:09:06,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2022-11-20 20:09:06,457 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:09:06,458 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:09:06,673 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0813b-8b4c-44fd-8add-538ed9d685a8/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 (10)] Forcibly destroying the process [2022-11-20 20:09:06,691 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0813b-8b4c-44fd-8add-538ed9d685a8/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 (10)] Forceful destruction successful, exit code 0 [2022-11-20 20:09:06,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0813b-8b4c-44fd-8add-538ed9d685a8/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 20:09:06,691 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:09:06,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:09:06,692 INFO L85 PathProgramCache]: Analyzing trace with hash 1104492533, now seen corresponding path program 1 times [2022-11-20 20:09:06,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 20:09:06,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1817626255] [2022-11-20 20:09:06,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:09:06,705 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 20:09:06,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0813b-8b4c-44fd-8add-538ed9d685a8/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 20:09:06,707 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0813b-8b4c-44fd-8add-538ed9d685a8/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 20:09:06,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0813b-8b4c-44fd-8add-538ed9d685a8/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 20:09:42,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:09:43,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 20660 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 20:09:43,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:09:43,446 INFO L134 CoverageAnalysis]: Checked inductivity of 521 backedges. 274 proven. 0 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2022-11-20 20:09:43,446 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 20:09:43,446 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 20:09:43,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1817626255] [2022-11-20 20:09:43,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1817626255] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:09:43,447 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:09:43,447 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 20:09:43,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943613701] [2022-11-20 20:09:43,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:09:43,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 20:09:43,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 20:09:43,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 20:09:43,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 20:09:43,449 INFO L87 Difference]: Start difference. First operand 3080 states and 4317 transitions. Second operand has 6 states, 6 states have (on average 29.5) internal successors, (177), 5 states have internal predecessors, (177), 2 states have call successors, (47), 2 states have call predecessors, (47), 3 states have return successors, (44), 3 states have call predecessors, (44), 2 states have call successors, (44) [2022-11-20 20:09:45,846 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 20:09:46,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:09:46,056 INFO L93 Difference]: Finished difference Result 6150 states and 8621 transitions. [2022-11-20 20:09:46,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 20:09:46,057 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 29.5) internal successors, (177), 5 states have internal predecessors, (177), 2 states have call successors, (47), 2 states have call predecessors, (47), 3 states have return successors, (44), 3 states have call predecessors, (44), 2 states have call successors, (44) Word has length 352 [2022-11-20 20:09:46,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:09:46,207 INFO L225 Difference]: With dead ends: 6150 [2022-11-20 20:09:46,207 INFO L226 Difference]: Without dead ends: 3087 [2022-11-20 20:09:46,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 347 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 20:09:46,219 INFO L413 NwaCegarLoop]: 4205 mSDtfsCounter, 16 mSDsluCounter, 16774 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 10 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 20979 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-20 20:09:46,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 20979 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 37 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-11-20 20:09:46,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3087 states. [2022-11-20 20:09:46,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3087 to 3082. [2022-11-20 20:09:46,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3082 states, 2074 states have (on average 1.2377049180327868) internal successors, (2567), 2113 states have internal predecessors, (2567), 872 states have call successors, (872), 132 states have call predecessors, (872), 134 states have return successors, (880), 862 states have call predecessors, (880), 872 states have call successors, (880) [2022-11-20 20:09:46,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3082 states to 3082 states and 4319 transitions. [2022-11-20 20:09:46,529 INFO L78 Accepts]: Start accepts. Automaton has 3082 states and 4319 transitions. Word has length 352 [2022-11-20 20:09:46,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:09:46,530 INFO L495 AbstractCegarLoop]: Abstraction has 3082 states and 4319 transitions. [2022-11-20 20:09:46,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.5) internal successors, (177), 5 states have internal predecessors, (177), 2 states have call successors, (47), 2 states have call predecessors, (47), 3 states have return successors, (44), 3 states have call predecessors, (44), 2 states have call successors, (44) [2022-11-20 20:09:46,530 INFO L276 IsEmpty]: Start isEmpty. Operand 3082 states and 4319 transitions. [2022-11-20 20:09:46,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2022-11-20 20:09:46,534 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:09:46,534 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:09:46,761 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0813b-8b4c-44fd-8add-538ed9d685a8/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)] Forcibly destroying the process [2022-11-20 20:09:46,763 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0813b-8b4c-44fd-8add-538ed9d685a8/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 20:09:46,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0813b-8b4c-44fd-8add-538ed9d685a8/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 20:09:46,764 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:09:46,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:09:46,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1153889305, now seen corresponding path program 1 times [2022-11-20 20:09:46,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 20:09:46,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1525119209] [2022-11-20 20:09:46,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:09:46,773 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 20:09:46,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0813b-8b4c-44fd-8add-538ed9d685a8/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 20:09:46,774 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0813b-8b4c-44fd-8add-538ed9d685a8/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 20:09:46,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0813b-8b4c-44fd-8add-538ed9d685a8/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 (12)] Waiting until timeout for monitored process [2022-11-20 20:10:27,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:10:28,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 20676 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 20:10:28,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:10:28,732 INFO L134 CoverageAnalysis]: Checked inductivity of 521 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 451 trivial. 0 not checked. [2022-11-20 20:10:28,732 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 20:10:28,733 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 20:10:28,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1525119209] [2022-11-20 20:10:28,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1525119209] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:10:28,733 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:10:28,733 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:10:28,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099566659] [2022-11-20 20:10:28,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:10:28,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:10:28,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 20:10:28,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:10:28,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:10:28,736 INFO L87 Difference]: Start difference. First operand 3082 states and 4319 transitions. Second operand has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 2 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (41), 2 states have call predecessors, (41), 2 states have call successors, (41) [2022-11-20 20:10:29,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:10:29,131 INFO L93 Difference]: Finished difference Result 6150 states and 8622 transitions. [2022-11-20 20:10:29,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:10:29,132 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 2 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (41), 2 states have call predecessors, (41), 2 states have call successors, (41) Word has length 355 [2022-11-20 20:10:29,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:10:29,151 INFO L225 Difference]: With dead ends: 6150 [2022-11-20 20:10:29,152 INFO L226 Difference]: Without dead ends: 3085 [2022-11-20 20:10:29,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 353 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 20:10:29,165 INFO L413 NwaCegarLoop]: 4200 mSDtfsCounter, 1 mSDsluCounter, 4196 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 8396 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 20:10:29,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 8396 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 20:10:29,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3085 states. [2022-11-20 20:10:29,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3085 to 3083. [2022-11-20 20:10:29,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3083 states, 2075 states have (on average 1.237590361445783) internal successors, (2568), 2114 states have internal predecessors, (2568), 872 states have call successors, (872), 132 states have call predecessors, (872), 134 states have return successors, (880), 862 states have call predecessors, (880), 872 states have call successors, (880) [2022-11-20 20:10:29,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3083 states to 3083 states and 4320 transitions. [2022-11-20 20:10:29,471 INFO L78 Accepts]: Start accepts. Automaton has 3083 states and 4320 transitions. Word has length 355 [2022-11-20 20:10:29,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:10:29,473 INFO L495 AbstractCegarLoop]: Abstraction has 3083 states and 4320 transitions. [2022-11-20 20:10:29,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 2 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (41), 2 states have call predecessors, (41), 2 states have call successors, (41) [2022-11-20 20:10:29,474 INFO L276 IsEmpty]: Start isEmpty. Operand 3083 states and 4320 transitions. [2022-11-20 20:10:29,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 596 [2022-11-20 20:10:29,479 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:10:29,480 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 10, 10, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:10:29,682 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0813b-8b4c-44fd-8add-538ed9d685a8/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 (12)] Forceful destruction successful, exit code 0 [2022-11-20 20:10:29,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0813b-8b4c-44fd-8add-538ed9d685a8/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 20:10:29,703 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:10:29,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:10:29,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1538367351, now seen corresponding path program 1 times [2022-11-20 20:10:29,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 20:10:29,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1499684587] [2022-11-20 20:10:29,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:10:29,712 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 20:10:29,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0813b-8b4c-44fd-8add-538ed9d685a8/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 20:10:29,713 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0813b-8b4c-44fd-8add-538ed9d685a8/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 20:10:29,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0813b-8b4c-44fd-8add-538ed9d685a8/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 20:11:17,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:11:18,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 21566 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 20:11:18,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:11:19,327 INFO L134 CoverageAnalysis]: Checked inductivity of 1280 backedges. 463 proven. 0 refuted. 0 times theorem prover too weak. 817 trivial. 0 not checked. [2022-11-20 20:11:19,327 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 20:11:19,327 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 20:11:19,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1499684587] [2022-11-20 20:11:19,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1499684587] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:11:19,328 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:11:19,328 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 20:11:19,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886438737] [2022-11-20 20:11:19,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:11:19,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 20:11:19,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 20:11:19,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 20:11:19,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 20:11:19,330 INFO L87 Difference]: Start difference. First operand 3083 states and 4320 transitions. Second operand has 5 states, 5 states have (on average 50.4) internal successors, (252), 5 states have internal predecessors, (252), 4 states have call successors, (92), 2 states have call predecessors, (92), 3 states have return successors, (89), 4 states have call predecessors, (89), 4 states have call successors, (89) [2022-11-20 20:11:20,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:11:20,303 INFO L93 Difference]: Finished difference Result 6176 states and 8709 transitions. [2022-11-20 20:11:20,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 20:11:20,304 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 50.4) internal successors, (252), 5 states have internal predecessors, (252), 4 states have call successors, (92), 2 states have call predecessors, (92), 3 states have return successors, (89), 4 states have call predecessors, (89), 4 states have call successors, (89) Word has length 595 [2022-11-20 20:11:20,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:11:20,322 INFO L225 Difference]: With dead ends: 6176 [2022-11-20 20:11:20,323 INFO L226 Difference]: Without dead ends: 3106 [2022-11-20 20:11:20,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 595 GetRequests, 591 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-20 20:11:20,338 INFO L413 NwaCegarLoop]: 4216 mSDtfsCounter, 11 mSDsluCounter, 12574 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 16790 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 20:11:20,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 16790 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 20:11:20,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3106 states. [2022-11-20 20:11:20,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3106 to 3095. [2022-11-20 20:11:20,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3095 states, 2082 states have (on average 1.2372718539865515) internal successors, (2576), 2121 states have internal predecessors, (2576), 877 states have call successors, (877), 132 states have call predecessors, (877), 134 states have return successors, (885), 867 states have call predecessors, (885), 877 states have call successors, (885) [2022-11-20 20:11:20,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3095 states to 3095 states and 4338 transitions. [2022-11-20 20:11:20,645 INFO L78 Accepts]: Start accepts. Automaton has 3095 states and 4338 transitions. Word has length 595 [2022-11-20 20:11:20,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:11:20,646 INFO L495 AbstractCegarLoop]: Abstraction has 3095 states and 4338 transitions. [2022-11-20 20:11:20,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 50.4) internal successors, (252), 5 states have internal predecessors, (252), 4 states have call successors, (92), 2 states have call predecessors, (92), 3 states have return successors, (89), 4 states have call predecessors, (89), 4 states have call successors, (89) [2022-11-20 20:11:20,647 INFO L276 IsEmpty]: Start isEmpty. Operand 3095 states and 4338 transitions. [2022-11-20 20:11:20,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 697 [2022-11-20 20:11:20,653 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:11:20,653 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 20, 20, 16, 16, 14, 14, 14, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:11:20,869 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0813b-8b4c-44fd-8add-538ed9d685a8/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 20:11:20,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0813b-8b4c-44fd-8add-538ed9d685a8/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 20:11:20,873 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:11:20,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:11:20,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1989002670, now seen corresponding path program 1 times [2022-11-20 20:11:20,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 20:11:20,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [945280746] [2022-11-20 20:11:20,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:11:20,883 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 20:11:20,883 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0813b-8b4c-44fd-8add-538ed9d685a8/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 20:11:20,884 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0813b-8b4c-44fd-8add-538ed9d685a8/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 20:11:20,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0813b-8b4c-44fd-8add-538ed9d685a8/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)] Waiting until timeout for monitored process [2022-11-20 20:12:14,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:12:15,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 21999 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 20:12:15,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:12:15,844 INFO L134 CoverageAnalysis]: Checked inductivity of 2251 backedges. 979 proven. 12 refuted. 0 times theorem prover too weak. 1260 trivial. 0 not checked. [2022-11-20 20:12:15,844 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:12:17,969 INFO L134 CoverageAnalysis]: Checked inductivity of 2251 backedges. 1 proven. 66 refuted. 0 times theorem prover too weak. 2184 trivial. 0 not checked. [2022-11-20 20:12:17,970 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 20:12:17,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [945280746] [2022-11-20 20:12:17,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [945280746] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:12:17,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1368387438] [2022-11-20 20:12:17,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:12:17,971 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 20:12:17,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0813b-8b4c-44fd-8add-538ed9d685a8/bin/utaipan-6cKwYrpEi9/cvc4 [2022-11-20 20:12:17,977 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0813b-8b4c-44fd-8add-538ed9d685a8/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 20:12:17,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0813b-8b4c-44fd-8add-538ed9d685a8/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2022-11-20 20:12:43,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:12:44,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 21999 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 20:12:44,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:12:49,407 INFO L134 CoverageAnalysis]: Checked inductivity of 2251 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2251 trivial. 0 not checked. [2022-11-20 20:12:49,407 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 20:12:49,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1368387438] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:12:49,408 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-20 20:12:49,408 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6, 6] total 11 [2022-11-20 20:12:49,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131941408] [2022-11-20 20:12:49,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:12:49,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:12:49,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 20:12:49,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:12:49,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-11-20 20:12:49,411 INFO L87 Difference]: Start difference. First operand 3095 states and 4338 transitions. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 2 states have internal predecessors, (218), 1 states have call successors, (78), 1 states have call predecessors, (78), 2 states have return successors, (75), 2 states have call predecessors, (75), 1 states have call successors, (75) [2022-11-20 20:12:49,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:12:49,725 INFO L93 Difference]: Finished difference Result 6173 states and 8689 transitions. [2022-11-20 20:12:49,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:12:49,726 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 2 states have internal predecessors, (218), 1 states have call successors, (78), 1 states have call predecessors, (78), 2 states have return successors, (75), 2 states have call predecessors, (75), 1 states have call successors, (75) Word has length 696 [2022-11-20 20:12:49,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:12:49,743 INFO L225 Difference]: With dead ends: 6173 [2022-11-20 20:12:49,743 INFO L226 Difference]: Without dead ends: 3095 [2022-11-20 20:12:49,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2085 GetRequests, 2076 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-11-20 20:12:49,757 INFO L413 NwaCegarLoop]: 4199 mSDtfsCounter, 3835 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3835 SdHoareTripleChecker+Valid, 4199 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 20:12:49,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3835 Valid, 4199 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 20:12:49,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3095 states. [2022-11-20 20:12:50,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3095 to 3095. [2022-11-20 20:12:50,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3095 states, 2082 states have (on average 1.2367915465898174) internal successors, (2575), 2121 states have internal predecessors, (2575), 877 states have call successors, (877), 132 states have call predecessors, (877), 134 states have return successors, (885), 867 states have call predecessors, (885), 877 states have call successors, (885) [2022-11-20 20:12:50,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3095 states to 3095 states and 4337 transitions. [2022-11-20 20:12:50,097 INFO L78 Accepts]: Start accepts. Automaton has 3095 states and 4337 transitions. Word has length 696 [2022-11-20 20:12:50,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:12:50,098 INFO L495 AbstractCegarLoop]: Abstraction has 3095 states and 4337 transitions. [2022-11-20 20:12:50,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 2 states have internal predecessors, (218), 1 states have call successors, (78), 1 states have call predecessors, (78), 2 states have return successors, (75), 2 states have call predecessors, (75), 1 states have call successors, (75) [2022-11-20 20:12:50,099 INFO L276 IsEmpty]: Start isEmpty. Operand 3095 states and 4337 transitions. [2022-11-20 20:12:50,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 698 [2022-11-20 20:12:50,105 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:12:50,106 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 20, 20, 16, 16, 14, 14, 14, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:12:50,306 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0813b-8b4c-44fd-8add-538ed9d685a8/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)] Forcibly destroying the process [2022-11-20 20:12:50,321 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0813b-8b4c-44fd-8add-538ed9d685a8/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)] Forceful destruction successful, exit code 0 [2022-11-20 20:12:50,456 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0813b-8b4c-44fd-8add-538ed9d685a8/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2022-11-20 20:12:50,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0813b-8b4c-44fd-8add-538ed9d685a8/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0813b-8b4c-44fd-8add-538ed9d685a8/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt [2022-11-20 20:12:50,522 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:12:50,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:12:50,523 INFO L85 PathProgramCache]: Analyzing trace with hash -624732225, now seen corresponding path program 1 times [2022-11-20 20:12:50,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 20:12:50,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1869922531] [2022-11-20 20:12:50,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:12:50,528 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 20:12:50,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0813b-8b4c-44fd-8add-538ed9d685a8/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 20:12:50,529 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0813b-8b4c-44fd-8add-538ed9d685a8/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 20:12:50,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0813b-8b4c-44fd-8add-538ed9d685a8/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)] Waiting until timeout for monitored process [2022-11-20 20:13:43,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:13:44,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 22000 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 20:13:44,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:13:45,428 INFO L134 CoverageAnalysis]: Checked inductivity of 2251 backedges. 979 proven. 12 refuted. 0 times theorem prover too weak. 1260 trivial. 0 not checked. [2022-11-20 20:13:45,429 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:13:47,382 INFO L134 CoverageAnalysis]: Checked inductivity of 2251 backedges. 1 proven. 66 refuted. 0 times theorem prover too weak. 2184 trivial. 0 not checked. [2022-11-20 20:13:47,382 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 20:13:47,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1869922531] [2022-11-20 20:13:47,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1869922531] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:13:47,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [20330808] [2022-11-20 20:13:47,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:13:47,383 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 20:13:47,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0813b-8b4c-44fd-8add-538ed9d685a8/bin/utaipan-6cKwYrpEi9/cvc4 [2022-11-20 20:13:47,387 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0813b-8b4c-44fd-8add-538ed9d685a8/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 20:13:47,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0813b-8b4c-44fd-8add-538ed9d685a8/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2022-11-20 20:14:15,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:14:16,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 22000 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 20:14:16,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:14:21,880 INFO L134 CoverageAnalysis]: Checked inductivity of 2251 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2251 trivial. 0 not checked. [2022-11-20 20:14:21,880 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 20:14:21,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [20330808] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:14:21,881 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-20 20:14:21,881 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6, 6] total 11 [2022-11-20 20:14:21,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214117629] [2022-11-20 20:14:21,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:14:21,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:14:21,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 20:14:21,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:14:21,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-11-20 20:14:21,884 INFO L87 Difference]: Start difference. First operand 3095 states and 4337 transitions. Second operand has 3 states, 3 states have (on average 73.0) internal successors, (219), 2 states have internal predecessors, (219), 1 states have call successors, (78), 1 states have call predecessors, (78), 2 states have return successors, (75), 2 states have call predecessors, (75), 1 states have call successors, (75) [2022-11-20 20:14:22,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:14:22,131 INFO L93 Difference]: Finished difference Result 6173 states and 8687 transitions. [2022-11-20 20:14:22,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:14:22,131 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 2 states have internal predecessors, (219), 1 states have call successors, (78), 1 states have call predecessors, (78), 2 states have return successors, (75), 2 states have call predecessors, (75), 1 states have call successors, (75) Word has length 697 [2022-11-20 20:14:22,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:14:22,153 INFO L225 Difference]: With dead ends: 6173 [2022-11-20 20:14:22,153 INFO L226 Difference]: Without dead ends: 3095 [2022-11-20 20:14:22,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2088 GetRequests, 2079 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-11-20 20:14:22,218 INFO L413 NwaCegarLoop]: 4198 mSDtfsCounter, 3833 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3833 SdHoareTripleChecker+Valid, 4198 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 20:14:22,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3833 Valid, 4198 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 20:14:22,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3095 states. [2022-11-20 20:14:22,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3095 to 3095. [2022-11-20 20:14:22,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3095 states, 2082 states have (on average 1.2363112391930835) internal successors, (2574), 2121 states have internal predecessors, (2574), 877 states have call successors, (877), 132 states have call predecessors, (877), 134 states have return successors, (885), 867 states have call predecessors, (885), 877 states have call successors, (885) [2022-11-20 20:14:22,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3095 states to 3095 states and 4336 transitions. [2022-11-20 20:14:22,616 INFO L78 Accepts]: Start accepts. Automaton has 3095 states and 4336 transitions. Word has length 697 [2022-11-20 20:14:22,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:14:22,617 INFO L495 AbstractCegarLoop]: Abstraction has 3095 states and 4336 transitions. [2022-11-20 20:14:22,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 2 states have internal predecessors, (219), 1 states have call successors, (78), 1 states have call predecessors, (78), 2 states have return successors, (75), 2 states have call predecessors, (75), 1 states have call successors, (75) [2022-11-20 20:14:22,618 INFO L276 IsEmpty]: Start isEmpty. Operand 3095 states and 4336 transitions. [2022-11-20 20:14:22,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 699 [2022-11-20 20:14:22,625 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:14:22,625 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 20, 20, 16, 16, 14, 14, 14, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:14:22,816 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0813b-8b4c-44fd-8add-538ed9d685a8/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2022-11-20 20:14:23,047 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0813b-8b4c-44fd-8add-538ed9d685a8/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)] Forcibly destroying the process [2022-11-20 20:14:23,092 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0813b-8b4c-44fd-8add-538ed9d685a8/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)] Forceful destruction successful, exit code 0 [2022-11-20 20:14:23,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0813b-8b4c-44fd-8add-538ed9d685a8/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0813b-8b4c-44fd-8add-538ed9d685a8/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 20:14:23,093 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:14:23,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:14:23,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1167504786, now seen corresponding path program 1 times [2022-11-20 20:14:23,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 20:14:23,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1177815719] [2022-11-20 20:14:23,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:14:23,100 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 20:14:23,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0813b-8b4c-44fd-8add-538ed9d685a8/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 20:14:23,101 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0813b-8b4c-44fd-8add-538ed9d685a8/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 20:14:23,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0813b-8b4c-44fd-8add-538ed9d685a8/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)] Waiting until timeout for monitored process [2022-11-20 20:15:19,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:15:20,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 22001 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 20:15:20,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:15:20,633 INFO L134 CoverageAnalysis]: Checked inductivity of 2251 backedges. 979 proven. 12 refuted. 0 times theorem prover too weak. 1260 trivial. 0 not checked. [2022-11-20 20:15:20,633 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:15:22,894 INFO L134 CoverageAnalysis]: Checked inductivity of 2251 backedges. 1 proven. 66 refuted. 0 times theorem prover too weak. 2184 trivial. 0 not checked. [2022-11-20 20:15:22,894 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 20:15:22,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1177815719] [2022-11-20 20:15:22,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1177815719] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:15:22,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1339455161] [2022-11-20 20:15:22,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:15:22,895 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 20:15:22,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0813b-8b4c-44fd-8add-538ed9d685a8/bin/utaipan-6cKwYrpEi9/cvc4 [2022-11-20 20:15:22,898 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0813b-8b4c-44fd-8add-538ed9d685a8/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 20:15:22,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0813b-8b4c-44fd-8add-538ed9d685a8/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process