./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--scsi--dc395x.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--scsi--dc395x.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 0011bf3948bf1d5c39bf27544f1c0eeb95eb3a8609236ba1425eb8eb6552d47c --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 12:48:08,281 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:48:08,284 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:48:08,340 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:48:08,342 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:48:08,347 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:48:08,351 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:48:08,356 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:48:08,358 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:48:08,365 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:48:08,367 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:48:08,370 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:48:08,371 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:48:08,374 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:48:08,377 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:48:08,382 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:48:08,384 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:48:08,386 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:48:08,388 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:48:08,397 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:48:08,399 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:48:08,402 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:48:08,405 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:48:08,406 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:48:08,419 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:48:08,420 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:48:08,421 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:48:08,423 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:48:08,424 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:48:08,425 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:48:08,426 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:48:08,428 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:48:08,431 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:48:08,432 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:48:08,434 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:48:08,434 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:48:08,436 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:48:08,437 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:48:08,437 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:48:08,439 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:48:08,440 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:48:08,441 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-20 12:48:08,495 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:48:08,495 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:48:08,496 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:48:08,496 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:48:08,497 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:48:08,498 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:48:08,499 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:48:08,499 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:48:08,499 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:48:08,500 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:48:08,501 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:48:08,501 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:48:08,502 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:48:08,502 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:48:08,502 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:48:08,503 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:48:08,503 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:48:08,503 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:48:08,503 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:48:08,504 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:48:08,504 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:48:08,504 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:48:08,505 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:48:08,505 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:48:08,505 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:48:08,506 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 12:48:08,506 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 12:48:08,506 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:48:08,507 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:48:08,507 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:48:08,508 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_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0011bf3948bf1d5c39bf27544f1c0eeb95eb3a8609236ba1425eb8eb6552d47c [2022-11-20 12:48:08,880 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:48:08,931 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:48:08,935 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:48:08,937 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:48:08,938 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:48:08,940 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--scsi--dc395x.ko-entry_point.cil.out.i [2022-11-20 12:48:12,712 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:48:13,540 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:48:13,540 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--scsi--dc395x.ko-entry_point.cil.out.i [2022-11-20 12:48:13,597 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/data/cad75db31/56dd345a57934518bdfe3d840223e47f/FLAG26bb7bf59 [2022-11-20 12:48:13,625 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/data/cad75db31/56dd345a57934518bdfe3d840223e47f [2022-11-20 12:48:13,628 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:48:13,631 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:48:13,634 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:48:13,634 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:48:13,639 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:48:13,640 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:48:13" (1/1) ... [2022-11-20 12:48:13,641 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9d80f25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:48:13, skipping insertion in model container [2022-11-20 12:48:13,642 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:48:13" (1/1) ... [2022-11-20 12:48:13,651 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:48:13,841 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:48:14,596 WARN L1259 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [4382] [2022-11-20 12:48:14,596 WARN L1259 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [4383-4384] [2022-11-20 12:48:15,231 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_041e48dc-030b-4dec-a7ad-41725c38456c/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--scsi--dc395x.ko-entry_point.cil.out.i[138207,138220] [2022-11-20 12:48:16,325 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.TypeSizes.extractIntegerValue(TypeSizes.java:384) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.BitabsTranslation.abstractShiftLeft(BitabsTranslation.java:148) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.constructBinaryBitwiseIntegerExpression(IntegerTranslation.java:187) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.ExpressionTranslation.constructBinaryBitwiseExpression(ExpressionTranslation.java:131) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CExpressionTranslator.handleBitshiftOperation(CExpressionTranslator.java:418) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:834) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:282) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2446) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:303) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java: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:728) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:282) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1413) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:220) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1087) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:232) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1646) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:229) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1087) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:232) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1087) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:232) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionDefinition(FunctionHandler.java:371) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1489) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:155) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.processTUchild(CHandler.java:3314) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2388) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:600) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:134) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.translate(MainTranslator.java:192) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.run(MainTranslator.java:115) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.(MainTranslator.java:93) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver.finish(CACSL2BoogieTranslatorObserver.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-20 12:48:16,336 INFO L158 Benchmark]: Toolchain (without parser) took 2703.99ms. Allocated memory was 130.0MB in the beginning and 161.5MB in the end (delta: 31.5MB). Free memory was 76.3MB in the beginning and 115.7MB in the end (delta: -39.4MB). Peak memory consumption was 41.4MB. Max. memory is 16.1GB. [2022-11-20 12:48:16,339 INFO L158 Benchmark]: CDTParser took 0.38ms. Allocated memory is still 130.0MB. Free memory is still 83.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 12:48:16,341 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2699.81ms. Allocated memory was 130.0MB in the beginning and 161.5MB in the end (delta: 31.5MB). Free memory was 76.0MB in the beginning and 115.7MB in the end (delta: -39.7MB). Peak memory consumption was 39.3MB. Max. memory is 16.1GB. [2022-11-20 12:48:16,343 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38ms. Allocated memory is still 130.0MB. Free memory is still 83.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2699.81ms. Allocated memory was 130.0MB in the beginning and 161.5MB in the end (delta: 31.5MB). Free memory was 76.0MB in the beginning and 115.7MB in the end (delta: -39.7MB). Peak memory consumption was 39.3MB. 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_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--scsi--dc395x.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 0011bf3948bf1d5c39bf27544f1c0eeb95eb3a8609236ba1425eb8eb6552d47c --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 12:48:19,223 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:48:19,226 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:48:19,275 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:48:19,275 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:48:19,280 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:48:19,283 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:48:19,287 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:48:19,290 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:48:19,297 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:48:19,299 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:48:19,302 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:48:19,303 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:48:19,306 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:48:19,308 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:48:19,316 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:48:19,317 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:48:19,319 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:48:19,321 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:48:19,323 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:48:19,324 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:48:19,329 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:48:19,330 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:48:19,331 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:48:19,348 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:48:19,348 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:48:19,349 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:48:19,351 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:48:19,352 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:48:19,353 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:48:19,354 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:48:19,356 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:48:19,358 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:48:19,359 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:48:19,378 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:48:19,378 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:48:19,379 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:48:19,379 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:48:19,380 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:48:19,381 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:48:19,382 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:48:19,383 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-11-20 12:48:19,436 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:48:19,437 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:48:19,439 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:48:19,439 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:48:19,440 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:48:19,441 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:48:19,442 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:48:19,442 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:48:19,442 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:48:19,443 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:48:19,444 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:48:19,444 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:48:19,445 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:48:19,445 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:48:19,445 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 12:48:19,446 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-20 12:48:19,446 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-20 12:48:19,446 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:48:19,447 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:48:19,447 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:48:19,447 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:48:19,448 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:48:19,448 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:48:19,448 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:48:19,449 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:48:19,449 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:48:19,449 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:48:19,450 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-20 12:48:19,450 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-20 12:48:19,450 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:48:19,451 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:48:19,451 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:48:19,452 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-20 12:48:19,452 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_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0011bf3948bf1d5c39bf27544f1c0eeb95eb3a8609236ba1425eb8eb6552d47c [2022-11-20 12:48:19,907 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:48:19,933 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:48:19,937 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:48:19,938 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:48:19,939 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:48:19,941 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--scsi--dc395x.ko-entry_point.cil.out.i [2022-11-20 12:48:23,911 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:48:24,797 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:48:24,798 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--scsi--dc395x.ko-entry_point.cil.out.i [2022-11-20 12:48:24,852 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/data/965d7b3e8/a5643bee6c9c443f92de645ab65cf0ad/FLAGa953bf8af [2022-11-20 12:48:24,882 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/data/965d7b3e8/a5643bee6c9c443f92de645ab65cf0ad [2022-11-20 12:48:24,886 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:48:24,888 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:48:24,890 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:48:24,890 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:48:24,895 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:48:24,896 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:48:24" (1/1) ... [2022-11-20 12:48:24,897 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17c1d3b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:48:24, skipping insertion in model container [2022-11-20 12:48:24,898 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:48:24" (1/1) ... [2022-11-20 12:48:24,907 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:48:25,079 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:48:25,747 WARN L1259 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [4382] [2022-11-20 12:48:25,748 WARN L1259 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [4383-4384] [2022-11-20 12:48:26,164 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_041e48dc-030b-4dec-a7ad-41725c38456c/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--scsi--dc395x.ko-entry_point.cil.out.i[138207,138220] [2022-11-20 12:48:27,841 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:48:27,903 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-20 12:48:27,987 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:48:28,130 WARN L1259 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [4382] [2022-11-20 12:48:28,130 WARN L1259 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [4383-4384] [2022-11-20 12:48:28,153 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_041e48dc-030b-4dec-a7ad-41725c38456c/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--scsi--dc395x.ko-entry_point.cil.out.i[138207,138220] [2022-11-20 12:48:28,695 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:48:28,710 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:48:28,839 WARN L1259 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [4382] [2022-11-20 12:48:28,840 WARN L1259 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [4383-4384] [2022-11-20 12:48:28,850 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_041e48dc-030b-4dec-a7ad-41725c38456c/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--scsi--dc395x.ko-entry_point.cil.out.i[138207,138220] [2022-11-20 12:48:29,211 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:48:29,312 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:48:29,313 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:48:29 WrapperNode [2022-11-20 12:48:29,313 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:48:29,314 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:48:29,314 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:48:29,315 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:48:29,323 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:48:29" (1/1) ... [2022-11-20 12:48:29,469 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:48:29" (1/1) ... [2022-11-20 12:48:29,685 INFO L138 Inliner]: procedures = 304, calls = 2828, calls flagged for inlining = 154, calls inlined = 150, statements flattened = 6355 [2022-11-20 12:48:29,686 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:48:29,687 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:48:29,687 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:48:29,687 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:48:29,698 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:48:29" (1/1) ... [2022-11-20 12:48:29,702 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:48:29" (1/1) ... [2022-11-20 12:48:29,743 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:48:29" (1/1) ... [2022-11-20 12:48:29,743 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:48:29" (1/1) ... [2022-11-20 12:48:30,018 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:48:29" (1/1) ... [2022-11-20 12:48:30,049 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:48:29" (1/1) ... [2022-11-20 12:48:30,098 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:48:29" (1/1) ... [2022-11-20 12:48:30,130 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:48:29" (1/1) ... [2022-11-20 12:48:30,185 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:48:30,188 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:48:30,188 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:48:30,189 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:48:30,192 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:48:29" (1/1) ... [2022-11-20 12:48:30,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:48:30,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:48:30,233 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 12:48:30,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 12:48:30,299 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-11-20 12:48:30,300 INFO L130 BoogieDeclarations]: Found specification of procedure srb_waiting_append [2022-11-20 12:48:30,300 INFO L138 BoogieDeclarations]: Found implementation of procedure srb_waiting_append [2022-11-20 12:48:30,300 INFO L130 BoogieDeclarations]: Found specification of procedure list_size [2022-11-20 12:48:30,300 INFO L138 BoogieDeclarations]: Found implementation of procedure list_size [2022-11-20 12:48:30,301 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_kunmap_atomic_sg [2022-11-20 12:48:30,301 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_kunmap_atomic_sg [2022-11-20 12:48:30,301 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-11-20 12:48:30,301 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-20 12:48:30,302 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-20 12:48:30,302 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2022-11-20 12:48:30,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-20 12:48:30,303 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-20 12:48:30,303 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-20 12:48:30,303 INFO L130 BoogieDeclarations]: Found specification of procedure waiting_set_timer [2022-11-20 12:48:30,304 INFO L138 BoogieDeclarations]: Found implementation of procedure waiting_set_timer [2022-11-20 12:48:30,304 INFO L130 BoogieDeclarations]: Found specification of procedure dcb_get_next [2022-11-20 12:48:30,304 INFO L138 BoogieDeclarations]: Found implementation of procedure dcb_get_next [2022-11-20 12:48:30,305 INFO L130 BoogieDeclarations]: Found specification of procedure waiting_process_next [2022-11-20 12:48:30,305 INFO L138 BoogieDeclarations]: Found implementation of procedure waiting_process_next [2022-11-20 12:48:30,306 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2022-11-20 12:48:30,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2022-11-20 12:48:30,307 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-20 12:48:30,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-20 12:48:30,308 INFO L130 BoogieDeclarations]: Found specification of procedure build_sdtr [2022-11-20 12:48:30,309 INFO L138 BoogieDeclarations]: Found implementation of procedure build_sdtr [2022-11-20 12:48:30,309 INFO L130 BoogieDeclarations]: Found specification of procedure find_cmd [2022-11-20 12:48:30,309 INFO L138 BoogieDeclarations]: Found implementation of procedure find_cmd [2022-11-20 12:48:30,309 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_bufflen [2022-11-20 12:48:30,310 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_bufflen [2022-11-20 12:48:30,310 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2022-11-20 12:48:30,310 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2022-11-20 12:48:30,310 INFO L130 BoogieDeclarations]: Found specification of procedure adapter_remove_and_free_device [2022-11-20 12:48:30,311 INFO L138 BoogieDeclarations]: Found implementation of procedure adapter_remove_and_free_device [2022-11-20 12:48:30,311 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup_after_transfer [2022-11-20 12:48:30,311 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup_after_transfer [2022-11-20 12:48:30,311 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_srb_sense [2022-11-20 12:48:30,312 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_srb_sense [2022-11-20 12:48:30,312 INFO L130 BoogieDeclarations]: Found specification of procedure trace_hardirqs_on [2022-11-20 12:48:30,312 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_hardirqs_on [2022-11-20 12:48:30,313 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_irq_restore [2022-11-20 12:48:30,313 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_irq_restore [2022-11-20 12:48:30,313 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_scsi_host_template_6 [2022-11-20 12:48:30,313 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_scsi_host_template_6 [2022-11-20 12:48:30,314 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-20 12:48:30,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-20 12:48:30,315 INFO L130 BoogieDeclarations]: Found specification of procedure start_scsi [2022-11-20 12:48:30,315 INFO L138 BoogieDeclarations]: Found implementation of procedure start_scsi [2022-11-20 12:48:30,316 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2022-11-20 12:48:30,316 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2022-11-20 12:48:30,316 INFO L130 BoogieDeclarations]: Found specification of procedure data_io_transfer [2022-11-20 12:48:30,317 INFO L138 BoogieDeclarations]: Found implementation of procedure data_io_transfer [2022-11-20 12:48:30,317 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-20 12:48:30,317 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-20 12:48:30,317 INFO L130 BoogieDeclarations]: Found specification of procedure adapter_uninit [2022-11-20 12:48:30,318 INFO L138 BoogieDeclarations]: Found implementation of procedure adapter_uninit [2022-11-20 12:48:30,318 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-20 12:48:30,318 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-20 12:48:30,319 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-20 12:48:30,319 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-20 12:48:30,319 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_sglist [2022-11-20 12:48:30,319 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_sglist [2022-11-20 12:48:30,320 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2022-11-20 12:48:30,320 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2022-11-20 12:48:30,320 INFO L130 BoogieDeclarations]: Found specification of procedure sg_verify_length [2022-11-20 12:48:30,320 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_verify_length [2022-11-20 12:48:30,320 INFO L130 BoogieDeclarations]: Found specification of procedure set_basic_config [2022-11-20 12:48:30,322 INFO L138 BoogieDeclarations]: Found implementation of procedure set_basic_config [2022-11-20 12:48:30,322 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 12:48:30,322 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-20 12:48:30,323 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-20 12:48:30,323 INFO L130 BoogieDeclarations]: Found specification of procedure trace_hardirqs_off [2022-11-20 12:48:30,324 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_hardirqs_off [2022-11-20 12:48:30,324 INFO L130 BoogieDeclarations]: Found specification of procedure enable_msgout_abort [2022-11-20 12:48:30,324 INFO L138 BoogieDeclarations]: Found implementation of procedure enable_msgout_abort [2022-11-20 12:48:30,324 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~VOID [2022-11-20 12:48:30,325 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~VOID [2022-11-20 12:48:30,326 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 12:48:30,326 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2022-11-20 12:48:30,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2022-11-20 12:48:30,326 INFO L130 BoogieDeclarations]: Found specification of procedure arch_irqs_disabled_flags [2022-11-20 12:48:30,327 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_irqs_disabled_flags [2022-11-20 12:48:30,327 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-20 12:48:30,327 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-20 12:48:30,327 INFO L130 BoogieDeclarations]: Found specification of procedure reprogram_regs [2022-11-20 12:48:30,327 INFO L138 BoogieDeclarations]: Found implementation of procedure reprogram_regs [2022-11-20 12:48:30,328 INFO L130 BoogieDeclarations]: Found specification of procedure adapter_sg_tables_free [2022-11-20 12:48:30,328 INFO L138 BoogieDeclarations]: Found implementation of procedure adapter_sg_tables_free [2022-11-20 12:48:30,328 INFO L130 BoogieDeclarations]: Found specification of procedure set_safe_settings [2022-11-20 12:48:30,328 INFO L138 BoogieDeclarations]: Found implementation of procedure set_safe_settings [2022-11-20 12:48:30,329 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2022-11-20 12:48:30,329 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2022-11-20 12:48:30,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-11-20 12:48:30,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-11-20 12:48:30,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2022-11-20 12:48:30,330 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 12:48:30,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-20 12:48:30,331 INFO L130 BoogieDeclarations]: Found specification of procedure trms1040_write_cmd [2022-11-20 12:48:30,331 INFO L138 BoogieDeclarations]: Found implementation of procedure trms1040_write_cmd [2022-11-20 12:48:30,331 INFO L130 BoogieDeclarations]: Found specification of procedure eeprom_override [2022-11-20 12:48:30,331 INFO L138 BoogieDeclarations]: Found implementation of procedure eeprom_override [2022-11-20 12:48:30,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-20 12:48:30,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2022-11-20 12:48:30,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-20 12:48:30,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-11-20 12:48:30,334 INFO L130 BoogieDeclarations]: Found specification of procedure build_wdtr [2022-11-20 12:48:30,337 INFO L138 BoogieDeclarations]: Found implementation of procedure build_wdtr [2022-11-20 12:48:30,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2022-11-20 12:48:30,338 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2022-11-20 12:48:30,340 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2022-11-20 12:48:30,340 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-20 12:48:30,341 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-20 12:48:30,342 INFO L130 BoogieDeclarations]: Found specification of procedure reset_dev_param [2022-11-20 12:48:30,343 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_dev_param [2022-11-20 12:48:30,343 INFO L130 BoogieDeclarations]: Found specification of procedure outw [2022-11-20 12:48:30,352 INFO L138 BoogieDeclarations]: Found implementation of procedure outw [2022-11-20 12:48:30,352 INFO L130 BoogieDeclarations]: Found specification of procedure msgin_reject [2022-11-20 12:48:30,353 INFO L138 BoogieDeclarations]: Found implementation of procedure msgin_reject [2022-11-20 12:48:30,353 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2022-11-20 12:48:30,353 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2022-11-20 12:48:30,354 INFO L130 BoogieDeclarations]: Found specification of procedure outl [2022-11-20 12:48:30,354 INFO L138 BoogieDeclarations]: Found implementation of procedure outl [2022-11-20 12:48:30,355 INFO L130 BoogieDeclarations]: Found specification of procedure srb_going_to_waiting_move [2022-11-20 12:48:30,355 INFO L138 BoogieDeclarations]: Found implementation of procedure srb_going_to_waiting_move [2022-11-20 12:48:30,356 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-20 12:48:30,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-20 12:48:30,356 INFO L130 BoogieDeclarations]: Found specification of procedure sg_update_list [2022-11-20 12:48:30,356 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_update_list [2022-11-20 12:48:30,357 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-20 12:48:30,357 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-20 12:48:30,357 INFO L130 BoogieDeclarations]: Found specification of procedure srb_going_remove [2022-11-20 12:48:30,357 INFO L138 BoogieDeclarations]: Found implementation of procedure srb_going_remove [2022-11-20 12:48:30,357 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2022-11-20 12:48:30,358 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2022-11-20 12:48:30,358 INFO L130 BoogieDeclarations]: Found specification of procedure free_tag [2022-11-20 12:48:30,358 INFO L138 BoogieDeclarations]: Found implementation of procedure free_tag [2022-11-20 12:48:30,358 INFO L130 BoogieDeclarations]: Found specification of procedure srb_waiting_remove [2022-11-20 12:48:30,358 INFO L138 BoogieDeclarations]: Found implementation of procedure srb_waiting_remove [2022-11-20 12:48:30,359 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-20 12:48:30,359 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-20 12:48:30,359 INFO L130 BoogieDeclarations]: Found specification of procedure sg_subtract_one [2022-11-20 12:48:30,359 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_subtract_one [2022-11-20 12:48:30,360 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-20 12:48:30,360 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-20 12:48:30,360 INFO L130 BoogieDeclarations]: Found specification of procedure clear_fifo [2022-11-20 12:48:30,360 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_fifo [2022-11-20 12:48:30,360 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2022-11-20 12:48:30,361 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2022-11-20 12:48:30,361 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-20 12:48:30,361 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-20 12:48:30,361 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2022-11-20 12:48:30,361 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2022-11-20 12:48:30,362 INFO L130 BoogieDeclarations]: Found specification of procedure dc395x_slave_destroy [2022-11-20 12:48:30,362 INFO L138 BoogieDeclarations]: Found implementation of procedure dc395x_slave_destroy [2022-11-20 12:48:30,362 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-20 12:48:30,362 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-20 12:48:30,362 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_1 [2022-11-20 12:48:30,363 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_1 [2022-11-20 12:48:30,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2022-11-20 12:48:30,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2022-11-20 12:48:30,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-11-20 12:48:30,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2022-11-20 12:48:30,364 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-20 12:48:30,364 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-20 12:48:30,364 INFO L130 BoogieDeclarations]: Found specification of procedure srb_free_insert [2022-11-20 12:48:30,364 INFO L138 BoogieDeclarations]: Found implementation of procedure srb_free_insert [2022-11-20 12:48:30,365 INFO L130 BoogieDeclarations]: Found specification of procedure timer_pending [2022-11-20 12:48:30,365 INFO L138 BoogieDeclarations]: Found implementation of procedure timer_pending [2022-11-20 12:48:30,365 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 12:48:30,365 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_irq_save [2022-11-20 12:48:30,365 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_irq_save [2022-11-20 12:48:30,366 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_timer_4 [2022-11-20 12:48:30,366 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_timer_4 [2022-11-20 12:48:30,366 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2022-11-20 12:48:30,366 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2022-11-20 12:48:30,366 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_sg_count [2022-11-20 12:48:30,367 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_sg_count [2022-11-20 12:48:30,367 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 12:48:30,367 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-20 12:48:30,369 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-20 12:48:30,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 12:48:30,370 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2022-11-20 12:48:30,370 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2022-11-20 12:48:30,370 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2022-11-20 12:48:30,370 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2022-11-20 12:48:30,370 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-20 12:48:30,371 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-20 12:48:30,371 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2022-11-20 12:48:30,371 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_4 [2022-11-20 12:48:30,371 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_4 [2022-11-20 12:48:30,371 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_host_put [2022-11-20 12:48:30,372 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_host_put [2022-11-20 12:48:30,372 INFO L130 BoogieDeclarations]: Found specification of procedure dc395x_remove_one [2022-11-20 12:48:30,372 INFO L138 BoogieDeclarations]: Found implementation of procedure dc395x_remove_one [2022-11-20 12:48:30,372 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_srb [2022-11-20 12:48:30,372 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_srb [2022-11-20 12:48:30,373 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_kmap_atomic_sg [2022-11-20 12:48:30,373 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_kmap_atomic_sg [2022-11-20 12:48:30,373 INFO L130 BoogieDeclarations]: Found specification of procedure find_dcb [2022-11-20 12:48:30,373 INFO L138 BoogieDeclarations]: Found implementation of procedure find_dcb [2022-11-20 12:48:30,373 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2022-11-20 12:48:30,374 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2022-11-20 12:48:30,374 INFO L130 BoogieDeclarations]: Found specification of procedure list_move [2022-11-20 12:48:30,374 INFO L138 BoogieDeclarations]: Found implementation of procedure list_move [2022-11-20 12:48:30,374 INFO L130 BoogieDeclarations]: Found specification of procedure reset_scsi_bus [2022-11-20 12:48:30,374 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_scsi_bus [2022-11-20 12:48:30,375 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2022-11-20 12:48:30,375 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2022-11-20 12:48:30,375 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~C_ULONG~TO~VOID [2022-11-20 12:48:30,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~C_ULONG~TO~VOID [2022-11-20 12:48:30,375 INFO L130 BoogieDeclarations]: Found specification of procedure inl [2022-11-20 12:48:30,376 INFO L138 BoogieDeclarations]: Found implementation of procedure inl [2022-11-20 12:48:30,376 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2022-11-20 12:48:30,376 INFO L130 BoogieDeclarations]: Found specification of procedure inw [2022-11-20 12:48:30,376 INFO L138 BoogieDeclarations]: Found implementation of procedure inw [2022-11-20 12:48:30,376 INFO L130 BoogieDeclarations]: Found specification of procedure trms1040_wait_30us [2022-11-20 12:48:30,377 INFO L138 BoogieDeclarations]: Found implementation of procedure trms1040_wait_30us [2022-11-20 12:48:30,377 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:48:30,377 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:48:30,377 INFO L130 BoogieDeclarations]: Found specification of procedure doing_srb_done [2022-11-20 12:48:30,377 INFO L138 BoogieDeclarations]: Found implementation of procedure doing_srb_done [2022-11-20 12:48:31,819 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:48:31,825 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:48:32,305 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-20 12:49:40,523 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:49:40,570 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:49:40,570 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-20 12:49:40,577 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:49:40 BoogieIcfgContainer [2022-11-20 12:49:40,577 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:49:40,580 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 12:49:40,580 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 12:49:40,584 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 12:49:40,585 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:48:24" (1/3) ... [2022-11-20 12:49:40,589 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ff4af87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:49:40, skipping insertion in model container [2022-11-20 12:49:40,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:48:29" (2/3) ... [2022-11-20 12:49:40,589 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ff4af87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:49:40, skipping insertion in model container [2022-11-20 12:49:40,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:49:40" (3/3) ... [2022-11-20 12:49:40,590 INFO L112 eAbstractionObserver]: Analyzing ICFG 43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--scsi--dc395x.ko-entry_point.cil.out.i [2022-11-20 12:49:40,612 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 12:49:40,613 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 12:49:40,735 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:49:40,742 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@40350cae, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:49:40,743 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 12:49:40,756 INFO L276 IsEmpty]: Start isEmpty. Operand has 2163 states, 1493 states have (on average 1.3402545210984596) internal successors, (2001), 1554 states have internal predecessors, (2001), 574 states have call successors, (574), 95 states have call predecessors, (574), 94 states have return successors, (568), 554 states have call predecessors, (568), 568 states have call successors, (568) [2022-11-20 12:49:40,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-20 12:49:40,770 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:49:40,771 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:49:40,771 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:49:40,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:49:40,777 INFO L85 PathProgramCache]: Analyzing trace with hash 337740908, now seen corresponding path program 1 times [2022-11-20 12:49:40,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:49:40,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2002342381] [2022-11-20 12:49:40,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:49:40,797 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:49:40,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:49:40,803 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:49:40,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-20 12:49:42,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:49:42,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 1330 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 12:49:42,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:49:42,864 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-20 12:49:42,864 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:49:42,865 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:49:42,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2002342381] [2022-11-20 12:49:42,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2002342381] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:49:42,867 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:49:42,867 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:49:42,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269562025] [2022-11-20 12:49:42,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:49:42,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:49:42,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:49:42,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:49:42,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:49:42,928 INFO L87 Difference]: Start difference. First operand has 2163 states, 1493 states have (on average 1.3402545210984596) internal successors, (2001), 1554 states have internal predecessors, (2001), 574 states have call successors, (574), 95 states have call predecessors, (574), 94 states have return successors, (568), 554 states have call predecessors, (568), 568 states have call successors, (568) Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-20 12:49:43,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:49:43,504 INFO L93 Difference]: Finished difference Result 4311 states and 6304 transitions. [2022-11-20 12:49:43,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:49:43,507 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 46 [2022-11-20 12:49:43,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:49:43,546 INFO L225 Difference]: With dead ends: 4311 [2022-11-20 12:49:43,547 INFO L226 Difference]: Without dead ends: 2127 [2022-11-20 12:49:43,572 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 43 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 12:49:43,580 INFO L413 NwaCegarLoop]: 3113 mSDtfsCounter, 2 mSDsluCounter, 6223 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 9336 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:49:43,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 9336 Invalid, 9 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:49:43,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2127 states. [2022-11-20 12:49:43,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2127 to 2127. [2022-11-20 12:49:43,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2127 states, 1465 states have (on average 1.326962457337884) internal successors, (1944), 1518 states have internal predecessors, (1944), 568 states have call successors, (568), 94 states have call predecessors, (568), 93 states have return successors, (567), 553 states have call predecessors, (567), 567 states have call successors, (567) [2022-11-20 12:49:43,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2127 states to 2127 states and 3079 transitions. [2022-11-20 12:49:43,820 INFO L78 Accepts]: Start accepts. Automaton has 2127 states and 3079 transitions. Word has length 46 [2022-11-20 12:49:43,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:49:43,822 INFO L495 AbstractCegarLoop]: Abstraction has 2127 states and 3079 transitions. [2022-11-20 12:49:43,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-20 12:49:43,822 INFO L276 IsEmpty]: Start isEmpty. Operand 2127 states and 3079 transitions. [2022-11-20 12:49:43,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-20 12:49:43,826 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:49:43,826 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:49:43,865 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-20 12:49:44,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:49:44,052 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:49:44,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:49:44,052 INFO L85 PathProgramCache]: Analyzing trace with hash 1009266130, now seen corresponding path program 1 times [2022-11-20 12:49:44,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:49:44,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1514986900] [2022-11-20 12:49:44,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:49:44,056 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:49:44,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:49:44,059 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:49:44,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-20 12:49:46,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:49:46,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 1341 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 12:49:46,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:49:46,281 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-20 12:49:46,281 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:49:46,707 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-20 12:49:46,707 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:49:46,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1514986900] [2022-11-20 12:49:46,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1514986900] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:49:46,708 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:49:46,708 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-20 12:49:46,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794172251] [2022-11-20 12:49:46,708 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:49:46,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:49:46,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:49:46,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:49:46,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:49:46,711 INFO L87 Difference]: Start difference. First operand 2127 states and 3079 transitions. Second operand has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-20 12:49:47,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:49:47,565 INFO L93 Difference]: Finished difference Result 4253 states and 6162 transitions. [2022-11-20 12:49:47,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 12:49:47,566 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 47 [2022-11-20 12:49:47,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:49:47,585 INFO L225 Difference]: With dead ends: 4253 [2022-11-20 12:49:47,585 INFO L226 Difference]: Without dead ends: 2136 [2022-11-20 12:49:47,598 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2022-11-20 12:49:47,600 INFO L413 NwaCegarLoop]: 3076 mSDtfsCounter, 14 mSDsluCounter, 12295 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 15371 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:49:47,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 15371 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 12:49:47,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2136 states. [2022-11-20 12:49:47,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2136 to 2136. [2022-11-20 12:49:47,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2136 states, 1473 states have (on average 1.327223353699932) internal successors, (1955), 1526 states have internal predecessors, (1955), 568 states have call successors, (568), 95 states have call predecessors, (568), 94 states have return successors, (567), 553 states have call predecessors, (567), 567 states have call successors, (567) [2022-11-20 12:49:47,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2136 states to 2136 states and 3090 transitions. [2022-11-20 12:49:47,730 INFO L78 Accepts]: Start accepts. Automaton has 2136 states and 3090 transitions. Word has length 47 [2022-11-20 12:49:47,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:49:47,730 INFO L495 AbstractCegarLoop]: Abstraction has 2136 states and 3090 transitions. [2022-11-20 12:49:47,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-20 12:49:47,731 INFO L276 IsEmpty]: Start isEmpty. Operand 2136 states and 3090 transitions. [2022-11-20 12:49:47,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-20 12:49:47,733 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:49:47,734 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:49:47,773 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-20 12:49:47,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:49:47,947 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:49:47,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:49:47,948 INFO L85 PathProgramCache]: Analyzing trace with hash 892579308, now seen corresponding path program 2 times [2022-11-20 12:49:47,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:49:47,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [724554954] [2022-11-20 12:49:47,953 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:49:47,953 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:49:47,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:49:47,954 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:49:48,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-20 12:49:49,570 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 12:49:49,570 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:49:49,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 1273 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:49:49,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:49:49,687 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-20 12:49:49,687 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:49:49,687 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:49:49,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [724554954] [2022-11-20 12:49:49,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [724554954] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:49:49,688 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:49:49,688 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:49:49,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053172598] [2022-11-20 12:49:49,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:49:49,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:49:49,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:49:49,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:49:49,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:49:49,690 INFO L87 Difference]: Start difference. First operand 2136 states and 3090 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-20 12:49:50,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:49:50,371 INFO L93 Difference]: Finished difference Result 6116 states and 8845 transitions. [2022-11-20 12:49:50,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:49:50,372 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 50 [2022-11-20 12:49:50,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:49:50,404 INFO L225 Difference]: With dead ends: 6116 [2022-11-20 12:49:50,405 INFO L226 Difference]: Without dead ends: 4001 [2022-11-20 12:49:50,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:49:50,420 INFO L413 NwaCegarLoop]: 3710 mSDtfsCounter, 2710 mSDsluCounter, 3023 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2710 SdHoareTripleChecker+Valid, 6733 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:49:50,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2710 Valid, 6733 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 12:49:50,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4001 states. [2022-11-20 12:49:50,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4001 to 3985. [2022-11-20 12:49:50,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3985 states, 2743 states have (on average 1.3266496536638717) internal successors, (3639), 2843 states have internal predecessors, (3639), 1058 states have call successors, (1058), 184 states have call predecessors, (1058), 183 states have return successors, (1068), 1031 states have call predecessors, (1068), 1057 states have call successors, (1068) [2022-11-20 12:49:50,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3985 states to 3985 states and 5765 transitions. [2022-11-20 12:49:50,693 INFO L78 Accepts]: Start accepts. Automaton has 3985 states and 5765 transitions. Word has length 50 [2022-11-20 12:49:50,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:49:50,694 INFO L495 AbstractCegarLoop]: Abstraction has 3985 states and 5765 transitions. [2022-11-20 12:49:50,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-20 12:49:50,695 INFO L276 IsEmpty]: Start isEmpty. Operand 3985 states and 5765 transitions. [2022-11-20 12:49:50,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-20 12:49:50,705 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:49:50,705 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 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] [2022-11-20 12:49:50,747 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-20 12:49:50,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:49:50,919 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:49:50,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:49:50,920 INFO L85 PathProgramCache]: Analyzing trace with hash 2033913384, now seen corresponding path program 1 times [2022-11-20 12:49:50,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:49:50,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [700302334] [2022-11-20 12:49:50,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:49:50,924 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:49:50,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:49:50,926 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:49:50,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-20 12:49:52,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:49:52,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 1560 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 12:49:52,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:49:53,131 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 48 proven. 10 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-11-20 12:49:53,132 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:49:54,178 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2022-11-20 12:49:54,178 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:49:54,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [700302334] [2022-11-20 12:49:54,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [700302334] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:49:54,179 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:49:54,179 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-11-20 12:49:54,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095152229] [2022-11-20 12:49:54,180 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:49:54,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 12:49:54,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:49:54,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 12:49:54,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2022-11-20 12:49:54,182 INFO L87 Difference]: Start difference. First operand 3985 states and 5765 transitions. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 2 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-20 12:49:56,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:49:56,341 INFO L93 Difference]: Finished difference Result 7976 states and 11547 transitions. [2022-11-20 12:49:56,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-20 12:49:56,342 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 2 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 110 [2022-11-20 12:49:56,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:49:56,490 INFO L225 Difference]: With dead ends: 7976 [2022-11-20 12:49:56,490 INFO L226 Difference]: Without dead ends: 3995 [2022-11-20 12:49:56,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=178, Invalid=374, Unknown=0, NotChecked=0, Total=552 [2022-11-20 12:49:56,515 INFO L413 NwaCegarLoop]: 3078 mSDtfsCounter, 44 mSDsluCounter, 15380 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 18458 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-20 12:49:56,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 18458 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-20 12:49:56,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3995 states. [2022-11-20 12:49:56,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3995 to 3995. [2022-11-20 12:49:56,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3995 states, 2753 states have (on average 1.3247366509262624) internal successors, (3647), 2853 states have internal predecessors, (3647), 1058 states have call successors, (1058), 184 states have call predecessors, (1058), 183 states have return successors, (1068), 1031 states have call predecessors, (1068), 1057 states have call successors, (1068) [2022-11-20 12:49:56,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3995 states to 3995 states and 5773 transitions. [2022-11-20 12:49:56,790 INFO L78 Accepts]: Start accepts. Automaton has 3995 states and 5773 transitions. Word has length 110 [2022-11-20 12:49:56,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:49:56,792 INFO L495 AbstractCegarLoop]: Abstraction has 3995 states and 5773 transitions. [2022-11-20 12:49:56,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 2 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-20 12:49:56,792 INFO L276 IsEmpty]: Start isEmpty. Operand 3995 states and 5773 transitions. [2022-11-20 12:49:56,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-11-20 12:49:56,801 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:49:56,801 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 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] [2022-11-20 12:49:56,846 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-20 12:49:57,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:49:57,027 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:49:57,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:49:57,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1807665240, now seen corresponding path program 2 times [2022-11-20 12:49:57,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:49:57,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1225326881] [2022-11-20 12:49:57,030 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:49:57,030 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:49:57,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:49:57,032 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:49:57,074 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-20 12:49:58,611 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 12:49:58,611 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:49:58,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 1270 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 12:49:58,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:49:58,761 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2022-11-20 12:49:58,761 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:49:58,762 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:49:58,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1225326881] [2022-11-20 12:49:58,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1225326881] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:49:58,762 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:49:58,762 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:49:58,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224852222] [2022-11-20 12:49:58,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:49:58,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:49:58,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:49:58,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:49:58,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:49:58,764 INFO L87 Difference]: Start difference. First operand 3995 states and 5773 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2022-11-20 12:50:00,979 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:50:02,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:50:02,826 INFO L93 Difference]: Finished difference Result 11939 states and 17263 transitions. [2022-11-20 12:50:02,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:50:02,827 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 114 [2022-11-20 12:50:02,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:50:02,893 INFO L225 Difference]: With dead ends: 11939 [2022-11-20 12:50:02,893 INFO L226 Difference]: Without dead ends: 7969 [2022-11-20 12:50:02,918 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 112 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 12:50:02,919 INFO L413 NwaCegarLoop]: 5635 mSDtfsCounter, 3300 mSDsluCounter, 8622 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 147 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3300 SdHoareTripleChecker+Valid, 14257 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:50:02,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3300 Valid, 14257 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 86 Invalid, 1 Unknown, 0 Unchecked, 3.3s Time] [2022-11-20 12:50:02,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7969 states. [2022-11-20 12:50:03,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7969 to 7945. [2022-11-20 12:50:03,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7945 states, 5473 states have (on average 1.325963822400877) internal successors, (7257), 5673 states have internal predecessors, (7257), 2108 states have call successors, (2108), 364 states have call predecessors, (2108), 363 states have return successors, (2129), 2053 states have call predecessors, (2129), 2107 states have call successors, (2129) [2022-11-20 12:50:03,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7945 states to 7945 states and 11494 transitions. [2022-11-20 12:50:03,641 INFO L78 Accepts]: Start accepts. Automaton has 7945 states and 11494 transitions. Word has length 114 [2022-11-20 12:50:03,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:50:03,646 INFO L495 AbstractCegarLoop]: Abstraction has 7945 states and 11494 transitions. [2022-11-20 12:50:03,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2022-11-20 12:50:03,648 INFO L276 IsEmpty]: Start isEmpty. Operand 7945 states and 11494 transitions. [2022-11-20 12:50:03,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-11-20 12:50:03,667 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:50:03,667 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 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] [2022-11-20 12:50:03,701 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-20 12:50:03,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:50:03,891 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:50:03,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:50:03,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1476184806, now seen corresponding path program 1 times [2022-11-20 12:50:03,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:50:03,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1761044656] [2022-11-20 12:50:03,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:50:03,894 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:50:03,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:50:03,895 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:50:03,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-20 12:50:05,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:50:05,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 1602 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:50:05,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:50:05,908 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-20 12:50:05,911 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:50:05,911 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:50:05,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1761044656] [2022-11-20 12:50:05,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1761044656] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:50:05,912 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:50:05,912 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:50:05,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458876686] [2022-11-20 12:50:05,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:50:05,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:50:05,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:50:05,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:50:05,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:50:05,916 INFO L87 Difference]: Start difference. First operand 7945 states and 11494 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-20 12:50:07,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:50:07,143 INFO L93 Difference]: Finished difference Result 22411 states and 32362 transitions. [2022-11-20 12:50:07,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:50:07,144 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 114 [2022-11-20 12:50:07,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:50:07,293 INFO L225 Difference]: With dead ends: 22411 [2022-11-20 12:50:07,293 INFO L226 Difference]: Without dead ends: 14491 [2022-11-20 12:50:07,352 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:50:07,353 INFO L413 NwaCegarLoop]: 4411 mSDtfsCounter, 2596 mSDsluCounter, 3051 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2596 SdHoareTripleChecker+Valid, 7462 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:50:07,354 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2596 Valid, 7462 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 12:50:07,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14491 states. [2022-11-20 12:50:08,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14491 to 14488. [2022-11-20 12:50:08,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14488 states, 9968 states have (on average 1.3229333868378812) internal successors, (13187), 10342 states have internal predecessors, (13187), 3831 states have call successors, (3831), 689 states have call predecessors, (3831), 688 states have return successors, (3874), 3724 states have call predecessors, (3874), 3830 states have call successors, (3874) [2022-11-20 12:50:08,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14488 states to 14488 states and 20892 transitions. [2022-11-20 12:50:08,918 INFO L78 Accepts]: Start accepts. Automaton has 14488 states and 20892 transitions. Word has length 114 [2022-11-20 12:50:08,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:50:08,919 INFO L495 AbstractCegarLoop]: Abstraction has 14488 states and 20892 transitions. [2022-11-20 12:50:08,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-20 12:50:08,919 INFO L276 IsEmpty]: Start isEmpty. Operand 14488 states and 20892 transitions. [2022-11-20 12:50:08,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-20 12:50:08,939 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:50:08,940 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 3, 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] [2022-11-20 12:50:08,984 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-20 12:50:09,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:50:09,155 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:50:09,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:50:09,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1527829941, now seen corresponding path program 1 times [2022-11-20 12:50:09,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:50:09,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1453733794] [2022-11-20 12:50:09,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:50:09,158 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:50:09,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:50:09,159 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:50:09,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-20 12:50:11,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:50:11,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 1657 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 12:50:11,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:50:11,434 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2022-11-20 12:50:11,434 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:50:11,435 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:50:11,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1453733794] [2022-11-20 12:50:11,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1453733794] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:50:11,435 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:50:11,435 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 12:50:11,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502265153] [2022-11-20 12:50:11,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:50:11,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:50:11,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:50:11,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:50:11,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:50:11,437 INFO L87 Difference]: Start difference. First operand 14488 states and 20892 transitions. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 5 states have internal predecessors, (79), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-20 12:50:13,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:50:13,972 INFO L93 Difference]: Finished difference Result 31291 states and 45414 transitions. [2022-11-20 12:50:13,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:50:13,973 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 5 states have internal predecessors, (79), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) Word has length 134 [2022-11-20 12:50:13,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:50:14,106 INFO L225 Difference]: With dead ends: 31291 [2022-11-20 12:50:14,107 INFO L226 Difference]: Without dead ends: 16835 [2022-11-20 12:50:14,190 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:50:14,192 INFO L413 NwaCegarLoop]: 3510 mSDtfsCounter, 1061 mSDsluCounter, 13260 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 286 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1061 SdHoareTripleChecker+Valid, 16770 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 286 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:50:14,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1061 Valid, 16770 Invalid, 319 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [286 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-20 12:50:14,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16835 states. [2022-11-20 12:50:16,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16835 to 14508. [2022-11-20 12:50:16,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14508 states, 9984 states have (on average 1.3224158653846154) internal successors, (13203), 10358 states have internal predecessors, (13203), 3831 states have call successors, (3831), 689 states have call predecessors, (3831), 692 states have return successors, (3892), 3728 states have call predecessors, (3892), 3830 states have call successors, (3892) [2022-11-20 12:50:16,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14508 states to 14508 states and 20926 transitions. [2022-11-20 12:50:16,454 INFO L78 Accepts]: Start accepts. Automaton has 14508 states and 20926 transitions. Word has length 134 [2022-11-20 12:50:16,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:50:16,456 INFO L495 AbstractCegarLoop]: Abstraction has 14508 states and 20926 transitions. [2022-11-20 12:50:16,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 5 states have internal predecessors, (79), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-20 12:50:16,456 INFO L276 IsEmpty]: Start isEmpty. Operand 14508 states and 20926 transitions. [2022-11-20 12:50:16,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-11-20 12:50:16,483 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:50:16,483 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 3, 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] [2022-11-20 12:50:16,530 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-20 12:50:16,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:50:16,707 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:50:16,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:50:16,708 INFO L85 PathProgramCache]: Analyzing trace with hash -1932293495, now seen corresponding path program 1 times [2022-11-20 12:50:16,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:50:16,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2010286889] [2022-11-20 12:50:16,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:50:16,710 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:50:16,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:50:16,713 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:50:16,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-20 12:50:18,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:50:18,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 1674 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-20 12:50:18,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:50:19,939 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2022-11-20 12:50:19,940 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:50:19,940 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:50:19,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2010286889] [2022-11-20 12:50:19,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2010286889] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:50:19,940 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:50:19,941 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-20 12:50:19,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612446573] [2022-11-20 12:50:19,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:50:19,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 12:50:19,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:50:19,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 12:50:19,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-11-20 12:50:19,943 INFO L87 Difference]: Start difference. First operand 14508 states and 20926 transitions. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 9 states have internal predecessors, (80), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 5 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-20 12:50:26,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:50:26,985 INFO L93 Difference]: Finished difference Result 32454 states and 47205 transitions. [2022-11-20 12:50:26,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 12:50:26,987 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 9 states have internal predecessors, (80), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 5 states have call predecessors, (13), 3 states have call successors, (13) Word has length 140 [2022-11-20 12:50:26,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:50:27,082 INFO L225 Difference]: With dead ends: 32454 [2022-11-20 12:50:27,082 INFO L226 Difference]: Without dead ends: 17978 [2022-11-20 12:50:27,135 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2022-11-20 12:50:27,136 INFO L413 NwaCegarLoop]: 4103 mSDtfsCounter, 3052 mSDsluCounter, 33923 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 794 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3194 SdHoareTripleChecker+Valid, 38026 SdHoareTripleChecker+Invalid, 1011 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 794 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:50:27,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3194 Valid, 38026 Invalid, 1011 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [794 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-11-20 12:50:27,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17978 states. [2022-11-20 12:50:28,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17978 to 14519. [2022-11-20 12:50:28,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14519 states, 9991 states have (on average 1.3221899709738765) internal successors, (13210), 10369 states have internal predecessors, (13210), 3835 states have call successors, (3835), 689 states have call predecessors, (3835), 692 states have return successors, (3896), 3729 states have call predecessors, (3896), 3834 states have call successors, (3896) [2022-11-20 12:50:28,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14519 states to 14519 states and 20941 transitions. [2022-11-20 12:50:28,995 INFO L78 Accepts]: Start accepts. Automaton has 14519 states and 20941 transitions. Word has length 140 [2022-11-20 12:50:28,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:50:28,996 INFO L495 AbstractCegarLoop]: Abstraction has 14519 states and 20941 transitions. [2022-11-20 12:50:28,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 9 states have internal predecessors, (80), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 5 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-20 12:50:28,997 INFO L276 IsEmpty]: Start isEmpty. Operand 14519 states and 20941 transitions. [2022-11-20 12:50:29,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-11-20 12:50:29,029 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:50:29,030 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:50:29,076 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-20 12:50:29,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:50:29,243 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:50:29,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:50:29,244 INFO L85 PathProgramCache]: Analyzing trace with hash 275835840, now seen corresponding path program 1 times [2022-11-20 12:50:29,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:50:29,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1008408599] [2022-11-20 12:50:29,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:50:29,247 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:50:29,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:50:29,250 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:50:29,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-20 12:50:31,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:50:31,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 1799 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-20 12:50:31,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:50:32,021 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2022-11-20 12:50:32,022 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:50:32,026 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:50:32,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1008408599] [2022-11-20 12:50:32,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1008408599] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:50:32,027 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:50:32,028 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 12:50:32,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537367347] [2022-11-20 12:50:32,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:50:32,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:50:32,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:50:32,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:50:32,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:50:32,033 INFO L87 Difference]: Start difference. First operand 14519 states and 20941 transitions. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 7 states have internal predecessors, (100), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-20 12:50:34,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:50:34,907 INFO L93 Difference]: Finished difference Result 29907 states and 43257 transitions. [2022-11-20 12:50:34,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 12:50:34,908 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 7 states have internal predecessors, (100), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) Word has length 157 [2022-11-20 12:50:34,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:50:34,988 INFO L225 Difference]: With dead ends: 29907 [2022-11-20 12:50:34,988 INFO L226 Difference]: Without dead ends: 15420 [2022-11-20 12:50:35,043 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-11-20 12:50:35,044 INFO L413 NwaCegarLoop]: 3987 mSDtfsCounter, 1340 mSDsluCounter, 21907 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1417 SdHoareTripleChecker+Valid, 25894 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-20 12:50:35,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1417 Valid, 25894 Invalid, 361 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [306 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-20 12:50:35,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15420 states. [2022-11-20 12:50:36,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15420 to 13962. [2022-11-20 12:50:36,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13962 states, 9606 states have (on average 1.3199042265250884) internal successors, (12679), 9974 states have internal predecessors, (12679), 3675 states have call successors, (3675), 677 states have call predecessors, (3675), 680 states have return successors, (3732), 3569 states have call predecessors, (3732), 3674 states have call successors, (3732) [2022-11-20 12:50:36,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13962 states to 13962 states and 20086 transitions. [2022-11-20 12:50:36,538 INFO L78 Accepts]: Start accepts. Automaton has 13962 states and 20086 transitions. Word has length 157 [2022-11-20 12:50:36,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:50:36,539 INFO L495 AbstractCegarLoop]: Abstraction has 13962 states and 20086 transitions. [2022-11-20 12:50:36,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 7 states have internal predecessors, (100), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-20 12:50:36,540 INFO L276 IsEmpty]: Start isEmpty. Operand 13962 states and 20086 transitions. [2022-11-20 12:50:36,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-11-20 12:50:36,585 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:50:36,585 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:50:36,637 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-20 12:50:36,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:50:36,795 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:50:36,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:50:36,796 INFO L85 PathProgramCache]: Analyzing trace with hash 573140543, now seen corresponding path program 1 times [2022-11-20 12:50:36,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:50:36,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [450397950] [2022-11-20 12:50:36,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:50:36,798 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:50:36,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:50:36,800 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:50:36,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-20 12:50:38,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:50:38,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 1758 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:50:38,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:50:38,935 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2022-11-20 12:50:38,935 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:50:38,935 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:50:38,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [450397950] [2022-11-20 12:50:38,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [450397950] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:50:38,935 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:50:38,936 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:50:38,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622607273] [2022-11-20 12:50:38,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:50:38,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:50:38,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:50:38,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:50:38,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:50:38,938 INFO L87 Difference]: Start difference. First operand 13962 states and 20086 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-20 12:50:40,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:50:40,501 INFO L93 Difference]: Finished difference Result 27916 states and 40276 transitions. [2022-11-20 12:50:40,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:50:40,502 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 164 [2022-11-20 12:50:40,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:50:40,612 INFO L225 Difference]: With dead ends: 27916 [2022-11-20 12:50:40,612 INFO L226 Difference]: Without dead ends: 13986 [2022-11-20 12:50:40,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:50:40,684 INFO L413 NwaCegarLoop]: 3076 mSDtfsCounter, 2 mSDsluCounter, 3073 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6149 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:50:40,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 6149 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:50:40,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13986 states. [2022-11-20 12:50:42,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13986 to 13968. [2022-11-20 12:50:42,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13968 states, 9612 states have (on average 1.3197045359966708) internal successors, (12685), 9980 states have internal predecessors, (12685), 3675 states have call successors, (3675), 677 states have call predecessors, (3675), 680 states have return successors, (3732), 3569 states have call predecessors, (3732), 3674 states have call successors, (3732) [2022-11-20 12:50:42,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13968 states to 13968 states and 20092 transitions. [2022-11-20 12:50:42,341 INFO L78 Accepts]: Start accepts. Automaton has 13968 states and 20092 transitions. Word has length 164 [2022-11-20 12:50:42,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:50:42,342 INFO L495 AbstractCegarLoop]: Abstraction has 13968 states and 20092 transitions. [2022-11-20 12:50:42,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-20 12:50:42,342 INFO L276 IsEmpty]: Start isEmpty. Operand 13968 states and 20092 transitions. [2022-11-20 12:50:42,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-11-20 12:50:42,381 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:50:42,382 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:50:42,427 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-20 12:50:42,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:50:42,595 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:50:42,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:50:42,596 INFO L85 PathProgramCache]: Analyzing trace with hash 596563050, now seen corresponding path program 1 times [2022-11-20 12:50:42,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:50:42,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [852393142] [2022-11-20 12:50:42,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:50:42,598 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:50:42,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:50:42,599 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:50:42,601 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-20 12:50:44,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:50:44,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 1772 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 12:50:44,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:50:44,783 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2022-11-20 12:50:44,784 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:50:45,025 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2022-11-20 12:50:45,025 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:50:45,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [852393142] [2022-11-20 12:50:45,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [852393142] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:50:45,026 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:50:45,026 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-11-20 12:50:45,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584399829] [2022-11-20 12:50:45,027 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:50:45,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:50:45,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:50:45,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:50:45,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:50:45,029 INFO L87 Difference]: Start difference. First operand 13968 states and 20092 transitions. Second operand has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 6 states have internal predecessors, (110), 4 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2022-11-20 12:50:46,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:50:46,481 INFO L93 Difference]: Finished difference Result 27952 states and 40324 transitions. [2022-11-20 12:50:46,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:50:46,482 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 6 states have internal predecessors, (110), 4 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) Word has length 171 [2022-11-20 12:50:46,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:50:46,586 INFO L225 Difference]: With dead ends: 27952 [2022-11-20 12:50:46,587 INFO L226 Difference]: Without dead ends: 14016 [2022-11-20 12:50:46,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 336 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:50:46,683 INFO L413 NwaCegarLoop]: 3078 mSDtfsCounter, 6 mSDsluCounter, 9219 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 12297 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:50:46,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 12297 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 12:50:46,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14016 states. [2022-11-20 12:50:48,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14016 to 14016. [2022-11-20 12:50:48,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14016 states, 9648 states have (on average 1.3185116086235489) internal successors, (12721), 10016 states have internal predecessors, (12721), 3687 states have call successors, (3687), 677 states have call predecessors, (3687), 680 states have return successors, (3744), 3581 states have call predecessors, (3744), 3686 states have call successors, (3744) [2022-11-20 12:50:48,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14016 states to 14016 states and 20152 transitions. [2022-11-20 12:50:48,290 INFO L78 Accepts]: Start accepts. Automaton has 14016 states and 20152 transitions. Word has length 171 [2022-11-20 12:50:48,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:50:48,291 INFO L495 AbstractCegarLoop]: Abstraction has 14016 states and 20152 transitions. [2022-11-20 12:50:48,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 6 states have internal predecessors, (110), 4 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2022-11-20 12:50:48,292 INFO L276 IsEmpty]: Start isEmpty. Operand 14016 states and 20152 transitions. [2022-11-20 12:50:48,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-11-20 12:50:48,327 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:50:48,328 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:50:48,374 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-20 12:50:48,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:50:48,543 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:50:48,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:50:48,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1844250934, now seen corresponding path program 2 times [2022-11-20 12:50:48,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:50:48,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2106216688] [2022-11-20 12:50:48,546 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:50:48,546 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:50:48,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:50:48,547 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:50:48,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-20 12:50:50,209 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 12:50:50,209 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:50:50,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 1352 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 12:50:50,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:50:50,357 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2022-11-20 12:50:50,357 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:50:50,357 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:50:50,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2106216688] [2022-11-20 12:50:50,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2106216688] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:50:50,357 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:50:50,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:50:50,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036301535] [2022-11-20 12:50:50,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:50:50,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:50:50,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:50:50,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:50:50,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:50:50,359 INFO L87 Difference]: Start difference. First operand 14016 states and 20152 transitions. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2022-11-20 12:50:51,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:50:51,381 INFO L93 Difference]: Finished difference Result 14037 states and 20176 transitions. [2022-11-20 12:50:51,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:50:51,382 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 185 [2022-11-20 12:50:51,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:50:51,452 INFO L225 Difference]: With dead ends: 14037 [2022-11-20 12:50:51,452 INFO L226 Difference]: Without dead ends: 14034 [2022-11-20 12:50:51,465 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 182 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 12:50:51,466 INFO L413 NwaCegarLoop]: 3076 mSDtfsCounter, 13 mSDsluCounter, 6148 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 9224 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:50:51,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 9224 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:50:51,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14034 states. [2022-11-20 12:50:52,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14034 to 14034. [2022-11-20 12:50:52,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14034 states, 9662 states have (on average 1.3178430966673567) internal successors, (12733), 10030 states have internal predecessors, (12733), 3689 states have call successors, (3689), 679 states have call predecessors, (3689), 682 states have return successors, (3748), 3583 states have call predecessors, (3748), 3688 states have call successors, (3748) [2022-11-20 12:50:52,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14034 states to 14034 states and 20170 transitions. [2022-11-20 12:50:52,848 INFO L78 Accepts]: Start accepts. Automaton has 14034 states and 20170 transitions. Word has length 185 [2022-11-20 12:50:52,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:50:52,849 INFO L495 AbstractCegarLoop]: Abstraction has 14034 states and 20170 transitions. [2022-11-20 12:50:52,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2022-11-20 12:50:52,849 INFO L276 IsEmpty]: Start isEmpty. Operand 14034 states and 20170 transitions. [2022-11-20 12:50:52,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2022-11-20 12:50:52,894 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:50:52,894 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 4, 4, 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] [2022-11-20 12:50:52,933 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-20 12:50:53,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:50:53,121 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:50:53,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:50:53,122 INFO L85 PathProgramCache]: Analyzing trace with hash -906159730, now seen corresponding path program 1 times [2022-11-20 12:50:53,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:50:53,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1377063074] [2022-11-20 12:50:53,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:50:53,124 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:50:53,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:50:53,126 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:50:53,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-20 12:50:55,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:50:55,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 2286 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 12:50:55,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:50:56,109 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2022-11-20 12:50:56,110 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:50:56,110 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:50:56,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1377063074] [2022-11-20 12:50:56,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1377063074] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:50:56,111 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:50:56,112 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 12:50:56,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908437836] [2022-11-20 12:50:56,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:50:56,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:50:56,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:50:56,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:50:56,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:50:56,115 INFO L87 Difference]: Start difference. First operand 14034 states and 20170 transitions. Second operand has 6 states, 6 states have (on average 22.5) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-20 12:50:57,991 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:50:59,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:50:59,959 INFO L93 Difference]: Finished difference Result 29621 states and 42746 transitions. [2022-11-20 12:50:59,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:50:59,960 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) Word has length 232 [2022-11-20 12:50:59,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:51:00,023 INFO L225 Difference]: With dead ends: 29621 [2022-11-20 12:51:00,023 INFO L226 Difference]: Without dead ends: 15619 [2022-11-20 12:51:00,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:51:00,072 INFO L413 NwaCegarLoop]: 3274 mSDtfsCounter, 731 mSDsluCounter, 12711 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 731 SdHoareTripleChecker+Valid, 15985 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:51:00,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [731 Valid, 15985 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-20 12:51:00,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15619 states. [2022-11-20 12:51:01,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15619 to 14040. [2022-11-20 12:51:01,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14040 states, 9668 states have (on average 1.317645841952834) internal successors, (12739), 10034 states have internal predecessors, (12739), 3689 states have call successors, (3689), 679 states have call predecessors, (3689), 682 states have return successors, (3748), 3585 states have call predecessors, (3748), 3688 states have call successors, (3748) [2022-11-20 12:51:01,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14040 states to 14040 states and 20176 transitions. [2022-11-20 12:51:01,323 INFO L78 Accepts]: Start accepts. Automaton has 14040 states and 20176 transitions. Word has length 232 [2022-11-20 12:51:01,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:51:01,324 INFO L495 AbstractCegarLoop]: Abstraction has 14040 states and 20176 transitions. [2022-11-20 12:51:01,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-20 12:51:01,324 INFO L276 IsEmpty]: Start isEmpty. Operand 14040 states and 20176 transitions. [2022-11-20 12:51:01,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2022-11-20 12:51:01,373 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:51:01,374 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:51:01,413 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-20 12:51:01,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:51:01,583 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:51:01,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:51:01,583 INFO L85 PathProgramCache]: Analyzing trace with hash -436233264, now seen corresponding path program 1 times [2022-11-20 12:51:01,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:51:01,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [93933255] [2022-11-20 12:51:01,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:51:01,585 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:51:01,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:51:01,588 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:51:01,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-20 12:51:03,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:51:03,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 2303 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 12:51:03,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:51:04,225 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-11-20 12:51:04,225 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:51:04,225 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:51:04,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [93933255] [2022-11-20 12:51:04,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [93933255] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:51:04,226 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:51:04,226 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:51:04,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782578835] [2022-11-20 12:51:04,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:51:04,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 12:51:04,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:51:04,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 12:51:04,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:51:04,228 INFO L87 Difference]: Start difference. First operand 14040 states and 20176 transitions. Second operand has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 states have internal predecessors, (133), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-20 12:51:11,374 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:51:16,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:51:16,305 INFO L93 Difference]: Finished difference Result 36295 states and 53038 transitions. [2022-11-20 12:51:16,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 12:51:16,306 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 states have internal predecessors, (133), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 238 [2022-11-20 12:51:16,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:51:16,393 INFO L225 Difference]: With dead ends: 36295 [2022-11-20 12:51:16,393 INFO L226 Difference]: Without dead ends: 22287 [2022-11-20 12:51:16,434 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-11-20 12:51:16,435 INFO L413 NwaCegarLoop]: 4867 mSDtfsCounter, 3988 mSDsluCounter, 20749 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1289 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4071 SdHoareTripleChecker+Valid, 25616 SdHoareTripleChecker+Invalid, 1336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1289 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2022-11-20 12:51:16,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4071 Valid, 25616 Invalid, 1336 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1289 Valid, 46 Invalid, 1 Unknown, 0 Unchecked, 7.9s Time] [2022-11-20 12:51:16,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22287 states. [2022-11-20 12:51:17,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22287 to 14050. [2022-11-20 12:51:18,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14050 states, 9678 states have (on average 1.3175242818764208) internal successors, (12751), 10044 states have internal predecessors, (12751), 3689 states have call successors, (3689), 679 states have call predecessors, (3689), 682 states have return successors, (3748), 3585 states have call predecessors, (3748), 3688 states have call successors, (3748) [2022-11-20 12:51:18,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14050 states to 14050 states and 20188 transitions. [2022-11-20 12:51:18,070 INFO L78 Accepts]: Start accepts. Automaton has 14050 states and 20188 transitions. Word has length 238 [2022-11-20 12:51:18,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:51:18,070 INFO L495 AbstractCegarLoop]: Abstraction has 14050 states and 20188 transitions. [2022-11-20 12:51:18,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 states have internal predecessors, (133), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-20 12:51:18,071 INFO L276 IsEmpty]: Start isEmpty. Operand 14050 states and 20188 transitions. [2022-11-20 12:51:18,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2022-11-20 12:51:18,103 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:51:18,103 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:51:18,144 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2022-11-20 12:51:18,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:51:18,305 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:51:18,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:51:18,306 INFO L85 PathProgramCache]: Analyzing trace with hash 953060750, now seen corresponding path program 1 times [2022-11-20 12:51:18,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:51:18,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2130237879] [2022-11-20 12:51:18,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:51:18,308 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:51:18,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:51:18,309 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:51:18,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-20 12:51:20,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:51:20,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 2303 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 12:51:20,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:51:21,029 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-11-20 12:51:21,029 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:51:21,030 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:51:21,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2130237879] [2022-11-20 12:51:21,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2130237879] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:51:21,031 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:51:21,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:51:21,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273103108] [2022-11-20 12:51:21,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:51:21,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:51:21,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:51:21,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:51:21,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:51:21,034 INFO L87 Difference]: Start difference. First operand 14050 states and 20188 transitions. Second operand has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-20 12:51:22,686 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:51:27,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:51:27,885 INFO L93 Difference]: Finished difference Result 29653 states and 42778 transitions. [2022-11-20 12:51:27,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:51:27,887 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 238 [2022-11-20 12:51:27,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:51:27,981 INFO L225 Difference]: With dead ends: 29653 [2022-11-20 12:51:27,982 INFO L226 Difference]: Without dead ends: 15635 [2022-11-20 12:51:28,045 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 236 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 12:51:28,046 INFO L413 NwaCegarLoop]: 3612 mSDtfsCounter, 1063 mSDsluCounter, 5585 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 288 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1063 SdHoareTripleChecker+Valid, 9197 SdHoareTripleChecker+Invalid, 581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 288 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-11-20 12:51:28,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1063 Valid, 9197 Invalid, 581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [288 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-11-20 12:51:28,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15635 states. [2022-11-20 12:51:29,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15635 to 14046. [2022-11-20 12:51:29,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14046 states, 9674 states have (on average 1.3172420922059127) internal successors, (12743), 10040 states have internal predecessors, (12743), 3689 states have call successors, (3689), 679 states have call predecessors, (3689), 682 states have return successors, (3748), 3585 states have call predecessors, (3748), 3688 states have call successors, (3748) [2022-11-20 12:51:29,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14046 states to 14046 states and 20180 transitions. [2022-11-20 12:51:29,958 INFO L78 Accepts]: Start accepts. Automaton has 14046 states and 20180 transitions. Word has length 238 [2022-11-20 12:51:29,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:51:29,959 INFO L495 AbstractCegarLoop]: Abstraction has 14046 states and 20180 transitions. [2022-11-20 12:51:29,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-20 12:51:29,960 INFO L276 IsEmpty]: Start isEmpty. Operand 14046 states and 20180 transitions. [2022-11-20 12:51:30,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2022-11-20 12:51:30,001 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:51:30,001 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:51:30,045 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Ended with exit code 0 [2022-11-20 12:51:30,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:51:30,202 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:51:30,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:51:30,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1460417867, now seen corresponding path program 1 times [2022-11-20 12:51:30,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:51:30,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [345352606] [2022-11-20 12:51:30,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:51:30,205 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:51:30,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:51:30,206 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:51:30,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-20 12:51:32,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:51:33,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 2316 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:51:33,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:51:33,130 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2022-11-20 12:51:33,130 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:51:33,131 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:51:33,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [345352606] [2022-11-20 12:51:33,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [345352606] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:51:33,132 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:51:33,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:51:33,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425495052] [2022-11-20 12:51:33,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:51:33,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:51:33,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:51:33,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:51:33,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:51:33,135 INFO L87 Difference]: Start difference. First operand 14046 states and 20180 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-20 12:51:34,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:51:34,874 INFO L93 Difference]: Finished difference Result 28092 states and 40374 transitions. [2022-11-20 12:51:34,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:51:34,875 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 240 [2022-11-20 12:51:34,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:51:34,966 INFO L225 Difference]: With dead ends: 28092 [2022-11-20 12:51:34,967 INFO L226 Difference]: Without dead ends: 14078 [2022-11-20 12:51:35,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:51:35,141 INFO L413 NwaCegarLoop]: 3081 mSDtfsCounter, 10 mSDsluCounter, 3071 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 6152 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:51:35,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 6152 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:51:35,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14078 states. [2022-11-20 12:51:36,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14078 to 14048. [2022-11-20 12:51:36,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14048 states, 9676 states have (on average 1.3171765192228193) internal successors, (12745), 10042 states have internal predecessors, (12745), 3689 states have call successors, (3689), 679 states have call predecessors, (3689), 682 states have return successors, (3748), 3585 states have call predecessors, (3748), 3688 states have call successors, (3748) [2022-11-20 12:51:36,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14048 states to 14048 states and 20182 transitions. [2022-11-20 12:51:36,646 INFO L78 Accepts]: Start accepts. Automaton has 14048 states and 20182 transitions. Word has length 240 [2022-11-20 12:51:36,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:51:36,647 INFO L495 AbstractCegarLoop]: Abstraction has 14048 states and 20182 transitions. [2022-11-20 12:51:36,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-20 12:51:36,647 INFO L276 IsEmpty]: Start isEmpty. Operand 14048 states and 20182 transitions. [2022-11-20 12:51:36,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2022-11-20 12:51:36,695 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:51:36,695 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 5, 5, 5, 5, 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] [2022-11-20 12:51:36,747 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-20 12:51:36,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:51:36,911 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:51:36,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:51:36,911 INFO L85 PathProgramCache]: Analyzing trace with hash 24198228, now seen corresponding path program 1 times [2022-11-20 12:51:36,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:51:36,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [862921612] [2022-11-20 12:51:36,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:51:36,914 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:51:36,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:51:36,915 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:51:36,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-20 12:51:39,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:51:39,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 2390 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:51:39,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:51:39,762 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2022-11-20 12:51:39,762 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:51:39,763 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:51:39,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [862921612] [2022-11-20 12:51:39,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [862921612] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:51:39,764 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:51:39,764 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:51:39,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387414496] [2022-11-20 12:51:39,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:51:39,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:51:39,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:51:39,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:51:39,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:51:39,772 INFO L87 Difference]: Start difference. First operand 14048 states and 20182 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-11-20 12:51:41,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:51:41,422 INFO L93 Difference]: Finished difference Result 28096 states and 40390 transitions. [2022-11-20 12:51:41,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:51:41,431 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 274 [2022-11-20 12:51:41,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:51:41,492 INFO L225 Difference]: With dead ends: 28096 [2022-11-20 12:51:41,492 INFO L226 Difference]: Without dead ends: 14080 [2022-11-20 12:51:41,543 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 272 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:51:41,544 INFO L413 NwaCegarLoop]: 3081 mSDtfsCounter, 8 mSDsluCounter, 3070 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 6151 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:51:41,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 6151 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:51:41,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14080 states. [2022-11-20 12:51:43,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14080 to 14052. [2022-11-20 12:51:43,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14052 states, 9680 states have (on average 1.3170454545454546) internal successors, (12749), 10046 states have internal predecessors, (12749), 3689 states have call successors, (3689), 679 states have call predecessors, (3689), 682 states have return successors, (3748), 3585 states have call predecessors, (3748), 3688 states have call successors, (3748) [2022-11-20 12:51:43,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14052 states to 14052 states and 20186 transitions. [2022-11-20 12:51:43,085 INFO L78 Accepts]: Start accepts. Automaton has 14052 states and 20186 transitions. Word has length 274 [2022-11-20 12:51:43,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:51:43,085 INFO L495 AbstractCegarLoop]: Abstraction has 14052 states and 20186 transitions. [2022-11-20 12:51:43,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-11-20 12:51:43,085 INFO L276 IsEmpty]: Start isEmpty. Operand 14052 states and 20186 transitions. [2022-11-20 12:51:43,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2022-11-20 12:51:43,143 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:51:43,143 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 9, 9, 8, 8, 8, 8, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2022-11-20 12:51:43,182 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-20 12:51:43,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:51:43,345 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:51:43,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:51:43,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1296416334, now seen corresponding path program 1 times [2022-11-20 12:51:43,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:51:43,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1417674974] [2022-11-20 12:51:43,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:51:43,348 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:51:43,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:51:43,349 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:51:43,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-20 12:51:46,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:51:46,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 2525 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 12:51:46,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:51:46,627 INFO L134 CoverageAnalysis]: Checked inductivity of 584 backedges. 121 proven. 1 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked. [2022-11-20 12:51:46,628 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:51:47,329 INFO L134 CoverageAnalysis]: Checked inductivity of 584 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 582 trivial. 0 not checked. [2022-11-20 12:51:47,330 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:51:47,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1417674974] [2022-11-20 12:51:47,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1417674974] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 12:51:47,330 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:51:47,331 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2022-11-20 12:51:47,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509160974] [2022-11-20 12:51:47,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:51:47,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:51:47,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:51:47,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:51:47,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:51:47,333 INFO L87 Difference]: Start difference. First operand 14052 states and 20186 transitions. Second operand has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 3 states have call successors, (41), 2 states have call predecessors, (41), 2 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) [2022-11-20 12:51:48,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:51:49,000 INFO L93 Difference]: Finished difference Result 28132 states and 40432 transitions. [2022-11-20 12:51:49,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:51:49,001 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 3 states have call successors, (41), 2 states have call predecessors, (41), 2 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) Word has length 354 [2022-11-20 12:51:49,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:51:49,086 INFO L225 Difference]: With dead ends: 28132 [2022-11-20 12:51:49,086 INFO L226 Difference]: Without dead ends: 14112 [2022-11-20 12:51:49,141 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 706 GetRequests, 702 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:51:49,141 INFO L413 NwaCegarLoop]: 3094 mSDtfsCounter, 15 mSDsluCounter, 6139 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 9233 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:51:49,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 9233 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:51:49,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14112 states. [2022-11-20 12:51:50,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14112 to 14102. [2022-11-20 12:51:50,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14102 states, 9708 states have (on average 1.3171611042439226) internal successors, (12787), 10074 states have internal predecessors, (12787), 3709 states have call successors, (3709), 681 states have call predecessors, (3709), 684 states have return successors, (3768), 3605 states have call predecessors, (3768), 3708 states have call successors, (3768) [2022-11-20 12:51:50,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14102 states to 14102 states and 20264 transitions. [2022-11-20 12:51:50,653 INFO L78 Accepts]: Start accepts. Automaton has 14102 states and 20264 transitions. Word has length 354 [2022-11-20 12:51:50,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:51:50,654 INFO L495 AbstractCegarLoop]: Abstraction has 14102 states and 20264 transitions. [2022-11-20 12:51:50,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 3 states have call successors, (41), 2 states have call predecessors, (41), 2 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) [2022-11-20 12:51:50,654 INFO L276 IsEmpty]: Start isEmpty. Operand 14102 states and 20264 transitions. [2022-11-20 12:51:50,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2022-11-20 12:51:50,711 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:51:50,711 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 9, 9, 8, 8, 8, 8, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2022-11-20 12:51:50,750 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Ended with exit code 0 [2022-11-20 12:51:50,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:51:50,913 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:51:50,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:51:50,913 INFO L85 PathProgramCache]: Analyzing trace with hash 698886388, now seen corresponding path program 1 times [2022-11-20 12:51:50,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:51:50,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [499671407] [2022-11-20 12:51:50,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:51:50,916 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:51:50,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:51:50,917 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:51:50,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-20 12:51:53,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:51:53,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 2526 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 12:51:53,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:51:53,961 INFO L134 CoverageAnalysis]: Checked inductivity of 584 backedges. 217 proven. 1 refuted. 0 times theorem prover too weak. 366 trivial. 0 not checked. [2022-11-20 12:51:53,961 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:51:54,499 INFO L134 CoverageAnalysis]: Checked inductivity of 584 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 582 trivial. 0 not checked. [2022-11-20 12:51:54,500 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:51:54,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [499671407] [2022-11-20 12:51:54,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [499671407] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:51:54,500 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:51:54,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-11-20 12:51:54,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378981561] [2022-11-20 12:51:54,501 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:51:54,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:51:54,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:51:54,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:51:54,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:51:54,504 INFO L87 Difference]: Start difference. First operand 14102 states and 20264 transitions. Second operand has 6 states, 6 states have (on average 31.5) internal successors, (189), 6 states have internal predecessors, (189), 4 states have call successors, (64), 2 states have call predecessors, (64), 2 states have return successors, (62), 4 states have call predecessors, (62), 4 states have call successors, (62) [2022-11-20 12:51:56,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:51:56,616 INFO L93 Difference]: Finished difference Result 28324 states and 40764 transitions. [2022-11-20 12:51:56,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:51:56,617 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 31.5) internal successors, (189), 6 states have internal predecessors, (189), 4 states have call successors, (64), 2 states have call predecessors, (64), 2 states have return successors, (62), 4 states have call predecessors, (62), 4 states have call successors, (62) Word has length 354 [2022-11-20 12:51:56,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:51:56,679 INFO L225 Difference]: With dead ends: 28324 [2022-11-20 12:51:56,679 INFO L226 Difference]: Without dead ends: 14254 [2022-11-20 12:51:56,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 706 GetRequests, 702 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:51:56,741 INFO L413 NwaCegarLoop]: 3107 mSDtfsCounter, 42 mSDsluCounter, 6157 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 9264 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:51:56,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 9264 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 12:51:56,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14254 states. [2022-11-20 12:51:58,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14254 to 14226. [2022-11-20 12:51:58,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14226 states, 9768 states have (on average 1.3166461916461916) internal successors, (12861), 10134 states have internal predecessors, (12861), 3773 states have call successors, (3773), 681 states have call predecessors, (3773), 684 states have return successors, (3832), 3669 states have call predecessors, (3832), 3772 states have call successors, (3832) [2022-11-20 12:51:58,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14226 states to 14226 states and 20466 transitions. [2022-11-20 12:51:58,415 INFO L78 Accepts]: Start accepts. Automaton has 14226 states and 20466 transitions. Word has length 354 [2022-11-20 12:51:58,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:51:58,416 INFO L495 AbstractCegarLoop]: Abstraction has 14226 states and 20466 transitions. [2022-11-20 12:51:58,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 31.5) internal successors, (189), 6 states have internal predecessors, (189), 4 states have call successors, (64), 2 states have call predecessors, (64), 2 states have return successors, (62), 4 states have call predecessors, (62), 4 states have call successors, (62) [2022-11-20 12:51:58,417 INFO L276 IsEmpty]: Start isEmpty. Operand 14226 states and 20466 transitions. [2022-11-20 12:51:58,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 515 [2022-11-20 12:51:58,469 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:51:58,470 INFO L195 NwaCegarLoop]: trace histogram [29, 29, 17, 17, 13, 13, 13, 13, 13, 13, 13, 13, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-20 12:51:58,512 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-20 12:51:58,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:51:58,683 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:51:58,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:51:58,684 INFO L85 PathProgramCache]: Analyzing trace with hash -282859600, now seen corresponding path program 1 times [2022-11-20 12:51:58,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:51:58,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [12553149] [2022-11-20 12:51:58,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:51:58,686 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:51:58,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:51:58,687 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:51:58,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-20 12:52:01,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:52:01,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 2796 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 12:52:01,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:52:02,267 INFO L134 CoverageAnalysis]: Checked inductivity of 2396 backedges. 289 proven. 21 refuted. 0 times theorem prover too weak. 2086 trivial. 0 not checked. [2022-11-20 12:52:02,268 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:52:03,546 INFO L134 CoverageAnalysis]: Checked inductivity of 2396 backedges. 19 proven. 3 refuted. 0 times theorem prover too weak. 2374 trivial. 0 not checked. [2022-11-20 12:52:03,546 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:52:03,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [12553149] [2022-11-20 12:52:03,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [12553149] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:52:03,547 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:52:03,548 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-20 12:52:03,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513784135] [2022-11-20 12:52:03,548 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:52:03,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:52:03,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:52:03,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:52:03,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:52:03,551 INFO L87 Difference]: Start difference. First operand 14226 states and 20466 transitions. Second operand has 8 states, 8 states have (on average 25.625) internal successors, (205), 8 states have internal predecessors, (205), 6 states have call successors, (70), 2 states have call predecessors, (70), 4 states have return successors, (69), 6 states have call predecessors, (69), 6 states have call successors, (69) [2022-11-20 12:52:06,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:52:06,245 INFO L93 Difference]: Finished difference Result 28618 states and 41226 transitions. [2022-11-20 12:52:06,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 12:52:06,246 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 25.625) internal successors, (205), 8 states have internal predecessors, (205), 6 states have call successors, (70), 2 states have call predecessors, (70), 4 states have return successors, (69), 6 states have call predecessors, (69), 6 states have call successors, (69) Word has length 514 [2022-11-20 12:52:06,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:52:06,321 INFO L225 Difference]: With dead ends: 28618 [2022-11-20 12:52:06,322 INFO L226 Difference]: Without dead ends: 14236 [2022-11-20 12:52:06,374 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1030 GetRequests, 1020 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2022-11-20 12:52:06,375 INFO L413 NwaCegarLoop]: 3152 mSDtfsCounter, 45 mSDsluCounter, 6209 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 9361 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-20 12:52:06,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 9361 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-20 12:52:06,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14236 states. [2022-11-20 12:52:08,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14236 to 14226. [2022-11-20 12:52:08,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14226 states, 9768 states have (on average 1.316031941031941) internal successors, (12855), 10134 states have internal predecessors, (12855), 3773 states have call successors, (3773), 681 states have call predecessors, (3773), 684 states have return successors, (3832), 3669 states have call predecessors, (3832), 3772 states have call successors, (3832) [2022-11-20 12:52:08,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14226 states to 14226 states and 20460 transitions. [2022-11-20 12:52:08,218 INFO L78 Accepts]: Start accepts. Automaton has 14226 states and 20460 transitions. Word has length 514 [2022-11-20 12:52:08,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:52:08,219 INFO L495 AbstractCegarLoop]: Abstraction has 14226 states and 20460 transitions. [2022-11-20 12:52:08,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 25.625) internal successors, (205), 8 states have internal predecessors, (205), 6 states have call successors, (70), 2 states have call predecessors, (70), 4 states have return successors, (69), 6 states have call predecessors, (69), 6 states have call successors, (69) [2022-11-20 12:52:08,219 INFO L276 IsEmpty]: Start isEmpty. Operand 14226 states and 20460 transitions. [2022-11-20 12:52:08,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 515 [2022-11-20 12:52:08,276 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:52:08,276 INFO L195 NwaCegarLoop]: trace histogram [29, 29, 17, 17, 13, 13, 13, 13, 13, 13, 13, 13, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-20 12:52:08,320 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-20 12:52:08,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:52:08,477 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:52:08,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:52:08,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1953501426, now seen corresponding path program 2 times [2022-11-20 12:52:08,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:52:08,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [73740108] [2022-11-20 12:52:08,480 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:52:08,480 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:52:08,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:52:08,481 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:52:08,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-20 12:52:10,578 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 12:52:10,579 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:52:10,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 1491 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:52:10,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:52:10,717 INFO L134 CoverageAnalysis]: Checked inductivity of 2396 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2396 trivial. 0 not checked. [2022-11-20 12:52:10,718 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:52:10,718 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:52:10,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [73740108] [2022-11-20 12:52:10,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [73740108] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:52:10,718 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:52:10,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:52:10,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475016178] [2022-11-20 12:52:10,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:52:10,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:52:10,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:52:10,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:52:10,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:52:10,721 INFO L87 Difference]: Start difference. First operand 14226 states and 20460 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 2 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2022-11-20 12:52:12,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:52:12,825 INFO L93 Difference]: Finished difference Result 30373 states and 43900 transitions. [2022-11-20 12:52:12,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:52:12,825 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 2 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) Word has length 514 [2022-11-20 12:52:12,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:52:12,887 INFO L225 Difference]: With dead ends: 30373 [2022-11-20 12:52:12,887 INFO L226 Difference]: Without dead ends: 16179 [2022-11-20 12:52:12,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 513 GetRequests, 512 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:52:12,948 INFO L413 NwaCegarLoop]: 3885 mSDtfsCounter, 528 mSDsluCounter, 3211 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 672 SdHoareTripleChecker+Valid, 7096 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:52:12,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [672 Valid, 7096 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:52:12,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16179 states. [2022-11-20 12:52:14,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16179 to 14228. [2022-11-20 12:52:14,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14228 states, 9770 states have (on average 1.3159672466734902) internal successors, (12857), 10136 states have internal predecessors, (12857), 3773 states have call successors, (3773), 681 states have call predecessors, (3773), 684 states have return successors, (3832), 3669 states have call predecessors, (3832), 3772 states have call successors, (3832) [2022-11-20 12:52:14,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14228 states to 14228 states and 20462 transitions. [2022-11-20 12:52:14,652 INFO L78 Accepts]: Start accepts. Automaton has 14228 states and 20462 transitions. Word has length 514 [2022-11-20 12:52:14,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:52:14,654 INFO L495 AbstractCegarLoop]: Abstraction has 14228 states and 20462 transitions. [2022-11-20 12:52:14,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 2 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2022-11-20 12:52:14,655 INFO L276 IsEmpty]: Start isEmpty. Operand 14228 states and 20462 transitions. [2022-11-20 12:52:14,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 517 [2022-11-20 12:52:14,771 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:52:14,772 INFO L195 NwaCegarLoop]: trace histogram [29, 29, 17, 17, 13, 13, 13, 13, 13, 13, 13, 13, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-20 12:52:14,821 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-11-20 12:52:14,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:52:14,987 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:52:14,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:52:14,988 INFO L85 PathProgramCache]: Analyzing trace with hash 432636686, now seen corresponding path program 1 times [2022-11-20 12:52:14,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:52:14,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [27417467] [2022-11-20 12:52:14,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:52:14,991 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:52:14,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:52:14,993 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:52:14,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-11-20 12:52:18,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:52:18,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 2808 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 12:52:18,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:52:19,338 INFO L134 CoverageAnalysis]: Checked inductivity of 2397 backedges. 289 proven. 7 refuted. 0 times theorem prover too weak. 2101 trivial. 0 not checked. [2022-11-20 12:52:19,339 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:52:21,290 INFO L134 CoverageAnalysis]: Checked inductivity of 2397 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2389 trivial. 0 not checked. [2022-11-20 12:52:21,290 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:52:21,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [27417467] [2022-11-20 12:52:21,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [27417467] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 12:52:21,291 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:52:21,292 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 9 [2022-11-20 12:52:21,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990138279] [2022-11-20 12:52:21,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:52:21,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:52:21,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:52:21,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:52:21,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:52:21,295 INFO L87 Difference]: Start difference. First operand 14228 states and 20462 transitions. Second operand has 6 states, 5 states have (on average 32.6) internal successors, (163), 6 states have internal predecessors, (163), 5 states have call successors, (41), 2 states have call predecessors, (41), 2 states have return successors, (39), 4 states have call predecessors, (39), 5 states have call successors, (39) [2022-11-20 12:52:24,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:52:24,261 INFO L93 Difference]: Finished difference Result 30585 states and 44252 transitions. [2022-11-20 12:52:24,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:52:24,265 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 32.6) internal successors, (163), 6 states have internal predecessors, (163), 5 states have call successors, (41), 2 states have call predecessors, (41), 2 states have return successors, (39), 4 states have call predecessors, (39), 5 states have call successors, (39) Word has length 516 [2022-11-20 12:52:24,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:52:24,341 INFO L225 Difference]: With dead ends: 30585 [2022-11-20 12:52:24,341 INFO L226 Difference]: Without dead ends: 16389 [2022-11-20 12:52:24,564 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1031 GetRequests, 1022 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-20 12:52:24,566 INFO L413 NwaCegarLoop]: 3753 mSDtfsCounter, 554 mSDsluCounter, 10658 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 700 SdHoareTripleChecker+Valid, 14411 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:52:24,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [700 Valid, 14411 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 12:52:24,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16389 states. [2022-11-20 12:52:26,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16389 to 14394. [2022-11-20 12:52:26,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14394 states, 9850 states have (on average 1.3154314720812184) internal successors, (12957), 10220 states have internal predecessors, (12957), 3855 states have call successors, (3855), 683 states have call predecessors, (3855), 688 states have return successors, (3918), 3749 states have call predecessors, (3918), 3854 states have call successors, (3918) [2022-11-20 12:52:26,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14394 states to 14394 states and 20730 transitions. [2022-11-20 12:52:26,444 INFO L78 Accepts]: Start accepts. Automaton has 14394 states and 20730 transitions. Word has length 516 [2022-11-20 12:52:26,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:52:26,445 INFO L495 AbstractCegarLoop]: Abstraction has 14394 states and 20730 transitions. [2022-11-20 12:52:26,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 32.6) internal successors, (163), 6 states have internal predecessors, (163), 5 states have call successors, (41), 2 states have call predecessors, (41), 2 states have return successors, (39), 4 states have call predecessors, (39), 5 states have call successors, (39) [2022-11-20 12:52:26,445 INFO L276 IsEmpty]: Start isEmpty. Operand 14394 states and 20730 transitions. [2022-11-20 12:52:26,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 517 [2022-11-20 12:52:26,500 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:52:26,500 INFO L195 NwaCegarLoop]: trace histogram [29, 29, 17, 17, 13, 13, 13, 13, 13, 13, 13, 13, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-20 12:52:26,541 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-11-20 12:52:26,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:52:26,701 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:52:26,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:52:26,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1729091600, now seen corresponding path program 1 times [2022-11-20 12:52:26,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:52:26,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [882016837] [2022-11-20 12:52:26,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:52:26,704 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:52:26,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:52:26,705 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:52:26,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041e48dc-030b-4dec-a7ad-41725c38456c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-20 12:52:30,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:52:30,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 2807 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 12:52:30,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:52:31,225 INFO L134 CoverageAnalysis]: Checked inductivity of 2397 backedges. 289 proven. 21 refuted. 0 times theorem prover too weak. 2087 trivial. 0 not checked. [2022-11-20 12:52:31,225 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:52:33,173 INFO L134 CoverageAnalysis]: Checked inductivity of 2397 backedges. 19 proven. 3 refuted. 0 times theorem prover too weak. 2375 trivial. 0 not checked. [2022-11-20 12:52:33,173 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:52:33,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [882016837] [2022-11-20 12:52:33,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [882016837] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:52:33,174 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:52:33,174 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2022-11-20 12:52:33,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576653599] [2022-11-20 12:52:33,175 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:52:33,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 12:52:33,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:52:33,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 12:52:33,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-11-20 12:52:33,177 INFO L87 Difference]: Start difference. First operand 14394 states and 20730 transitions. Second operand has 11 states, 9 states have (on average 22.88888888888889) internal successors, (206), 11 states have internal predecessors, (206), 7 states have call successors, (65), 2 states have call predecessors, (65), 3 states have return successors, (63), 5 states have call predecessors, (63), 7 states have call successors, (63)