./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--usb--class--cdc-acm.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_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/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_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/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--usb--class--cdc-acm.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/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_f521c03b-11d3-447b-a8c8-8556201bbc22/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 36ffbabf76f0a0e87302d8b80308134217d4fdef380ae154dfcdec710817c6e2 --- 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 12:14:11,358 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:14:11,360 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:14:11,383 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:14:11,384 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:14:11,386 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:14:11,387 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:14:11,390 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:14:11,392 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:14:11,393 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:14:11,395 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:14:11,396 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:14:11,397 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:14:11,399 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:14:11,400 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:14:11,402 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:14:11,403 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:14:11,404 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:14:11,406 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:14:11,409 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:14:11,410 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:14:11,412 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:14:11,413 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:14:11,415 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:14:11,419 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:14:11,419 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:14:11,420 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:14:11,421 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:14:11,422 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:14:11,423 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:14:11,423 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:14:11,425 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:14:11,426 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:14:11,427 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:14:11,428 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:14:11,429 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:14:11,430 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:14:11,431 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:14:11,431 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:14:11,433 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:14:11,433 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:14:11,435 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-20 12:14:11,462 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:14:11,462 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:14:11,463 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:14:11,463 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:14:11,464 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:14:11,465 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:14:11,466 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:14:11,466 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:14:11,466 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:14:11,467 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:14:11,467 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:14:11,468 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:14:11,468 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:14:11,468 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:14:11,469 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:14:11,469 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:14:11,469 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:14:11,470 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:14:11,470 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:14:11,470 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:14:11,471 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:14:11,471 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:14:11,472 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:14:11,472 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:14:11,472 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:14:11,473 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 12:14:11,473 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 12:14:11,474 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:14:11,474 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:14:11,474 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:14:11,475 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 36ffbabf76f0a0e87302d8b80308134217d4fdef380ae154dfcdec710817c6e2 [2022-11-20 12:14:11,799 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:14:11,846 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:14:11,850 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:14:11,853 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:14:11,854 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:14:11,855 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--class--cdc-acm.ko-entry_point.cil.out.i [2022-11-20 12:14:15,743 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:14:16,441 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:14:16,442 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--class--cdc-acm.ko-entry_point.cil.out.i [2022-11-20 12:14:16,488 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/data/d3d547133/9b6ff6db9795468585b1d11a0fe13b06/FLAGcb9066e35 [2022-11-20 12:14:16,511 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/data/d3d547133/9b6ff6db9795468585b1d11a0fe13b06 [2022-11-20 12:14:16,517 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:14:16,521 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:14:16,526 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:14:16,526 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:14:16,532 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:14:16,533 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:14:16" (1/1) ... [2022-11-20 12:14:16,535 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67254880 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:14:16, skipping insertion in model container [2022-11-20 12:14:16,535 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:14:16" (1/1) ... [2022-11-20 12:14:16,545 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:14:16,695 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:14:17,381 WARN L1259 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [3834] [2022-11-20 12:14:17,385 WARN L1259 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [3835-3836] [2022-11-20 12:14:17,473 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.TypeSizes.extractIntegerValue(TypeSizes.java:384) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.BitabsTranslation.abstractShiftRight(BitabsTranslation.java:159) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.constructBinaryBitwiseIntegerExpression(IntegerTranslation.java:190) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.ExpressionTranslation.constructBinaryBitwiseExpression(ExpressionTranslation.java:131) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CExpressionTranslator.handleBitshiftOperation(CExpressionTranslator.java:418) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:834) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:282) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2446) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:303) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:960) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:279) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:727) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:282) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2446) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:303) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleReturnStatement(FunctionHandler.java:540) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2061) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:193) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1087) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:232) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1087) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:232) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionDefinition(FunctionHandler.java:371) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1489) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:155) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.processTUchild(CHandler.java:3314) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2388) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:600) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:134) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.translate(MainTranslator.java:192) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.run(MainTranslator.java:115) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.(MainTranslator.java:93) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver.finish(CACSL2BoogieTranslatorObserver.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-20 12:14:17,486 INFO L158 Benchmark]: Toolchain (without parser) took 963.12ms. Allocated memory is still 174.1MB. Free memory was 134.1MB in the beginning and 88.6MB in the end (delta: 45.5MB). Peak memory consumption was 46.1MB. Max. memory is 16.1GB. [2022-11-20 12:14:17,487 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 113.2MB. Free memory is still 63.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 12:14:17,488 INFO L158 Benchmark]: CACSL2BoogieTranslator took 956.96ms. Allocated memory is still 174.1MB. Free memory was 133.4MB in the beginning and 88.6MB in the end (delta: 44.8MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. [2022-11-20 12:14:17,490 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 113.2MB. Free memory is still 63.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 956.96ms. Allocated memory is still 174.1MB. Free memory was 133.4MB in the beginning and 88.6MB in the end (delta: 44.8MB). Peak memory consumption was 44.0MB. 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_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/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_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/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--usb--class--cdc-acm.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/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_f521c03b-11d3-447b-a8c8-8556201bbc22/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 36ffbabf76f0a0e87302d8b80308134217d4fdef380ae154dfcdec710817c6e2 --- 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 12:14:20,280 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:14:20,283 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:14:20,320 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:14:20,321 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:14:20,326 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:14:20,333 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:14:20,340 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:14:20,342 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:14:20,346 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:14:20,347 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:14:20,348 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:14:20,349 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:14:20,355 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:14:20,356 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:14:20,358 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:14:20,359 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:14:20,360 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:14:20,361 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:14:20,368 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:14:20,375 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:14:20,379 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:14:20,381 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:14:20,382 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:14:20,394 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:14:20,394 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:14:20,395 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:14:20,396 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:14:20,396 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:14:20,398 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:14:20,398 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:14:20,399 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:14:20,405 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:14:20,420 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:14:20,422 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:14:20,422 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:14:20,423 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:14:20,424 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:14:20,424 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:14:20,425 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:14:20,426 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:14:20,427 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-11-20 12:14:20,458 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:14:20,458 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:14:20,459 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:14:20,459 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:14:20,460 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:14:20,460 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:14:20,461 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:14:20,461 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:14:20,462 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:14:20,462 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:14:20,462 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:14:20,463 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:14:20,463 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:14:20,463 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:14:20,463 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 12:14:20,464 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-20 12:14:20,464 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-20 12:14:20,464 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:14:20,464 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:14:20,465 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:14:20,465 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:14:20,465 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:14:20,466 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:14:20,466 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:14:20,466 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:14:20,466 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:14:20,467 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:14:20,467 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-20 12:14:20,467 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-20 12:14:20,468 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:14:20,468 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:14:20,468 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:14:20,468 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-20 12:14:20,469 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_f521c03b-11d3-447b-a8c8-8556201bbc22/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 36ffbabf76f0a0e87302d8b80308134217d4fdef380ae154dfcdec710817c6e2 [2022-11-20 12:14:20,933 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:14:20,969 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:14:20,973 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:14:20,974 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:14:20,974 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:14:20,976 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--class--cdc-acm.ko-entry_point.cil.out.i [2022-11-20 12:14:24,837 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:14:25,598 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:14:25,598 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--class--cdc-acm.ko-entry_point.cil.out.i [2022-11-20 12:14:25,653 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/data/a3d73adeb/83bf19690e7e4ac18fcb37f79dec0f55/FLAG84a90499e [2022-11-20 12:14:25,682 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/data/a3d73adeb/83bf19690e7e4ac18fcb37f79dec0f55 [2022-11-20 12:14:25,688 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:14:25,690 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:14:25,696 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:14:25,696 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:14:25,701 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:14:25,703 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:14:25" (1/1) ... [2022-11-20 12:14:25,704 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d52cd3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:14:25, skipping insertion in model container [2022-11-20 12:14:25,705 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:14:25" (1/1) ... [2022-11-20 12:14:25,714 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:14:25,922 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:14:26,650 WARN L1259 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [3834] [2022-11-20 12:14:26,653 WARN L1259 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [3835-3836] [2022-11-20 12:14:27,212 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_f521c03b-11d3-447b-a8c8-8556201bbc22/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--class--cdc-acm.ko-entry_point.cil.out.i[119274,119287] [2022-11-20 12:14:28,694 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:14:28,803 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-20 12:14:28,891 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:14:28,967 WARN L1259 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [3834] [2022-11-20 12:14:28,968 WARN L1259 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [3835-3836] [2022-11-20 12:14:28,982 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_f521c03b-11d3-447b-a8c8-8556201bbc22/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--class--cdc-acm.ko-entry_point.cil.out.i[119274,119287] [2022-11-20 12:14:29,289 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:14:29,355 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:14:29,499 WARN L1259 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [3834] [2022-11-20 12:14:29,500 WARN L1259 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [3835-3836] [2022-11-20 12:14:29,520 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_f521c03b-11d3-447b-a8c8-8556201bbc22/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--class--cdc-acm.ko-entry_point.cil.out.i[119274,119287] [2022-11-20 12:14:29,787 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:14:30,104 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:14:30,104 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:14:30 WrapperNode [2022-11-20 12:14:30,105 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:14:30,106 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:14:30,106 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:14:30,107 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:14:30,116 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:14:30" (1/1) ... [2022-11-20 12:14:30,300 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:14:30" (1/1) ... [2022-11-20 12:14:30,762 INFO L138 Inliner]: procedures = 279, calls = 3761, calls flagged for inlining = 131, calls inlined = 111, statements flattened = 6399 [2022-11-20 12:14:30,763 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:14:30,765 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:14:30,765 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:14:30,765 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:14:30,779 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:14:30" (1/1) ... [2022-11-20 12:14:30,780 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:14:30" (1/1) ... [2022-11-20 12:14:30,863 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:14:30" (1/1) ... [2022-11-20 12:14:30,864 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:14:30" (1/1) ... [2022-11-20 12:14:31,068 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:14:30" (1/1) ... [2022-11-20 12:14:31,108 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:14:30" (1/1) ... [2022-11-20 12:14:31,153 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:14:30" (1/1) ... [2022-11-20 12:14:31,178 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:14:30" (1/1) ... [2022-11-20 12:14:31,305 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:14:31,320 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:14:31,320 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:14:31,320 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:14:31,321 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:14:30" (1/1) ... [2022-11-20 12:14:31,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:14:31,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:14:31,385 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 12:14:31,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 12:14:31,451 INFO L130 BoogieDeclarations]: Found specification of procedure acm_disconnect [2022-11-20 12:14:31,452 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_disconnect [2022-11-20 12:14:31,452 INFO L130 BoogieDeclarations]: Found specification of procedure tty_port_tty_hangup [2022-11-20 12:14:31,452 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_port_tty_hangup [2022-11-20 12:14:31,452 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-11-20 12:14:31,452 INFO L130 BoogieDeclarations]: Found specification of procedure __cmpxchg_wrong_size [2022-11-20 12:14:31,453 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2022-11-20 12:14:31,453 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2022-11-20 12:14:31,453 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2022-11-20 12:14:31,453 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2022-11-20 12:14:31,454 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-11-20 12:14:31,454 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2022-11-20 12:14:31,454 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-20 12:14:31,454 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-20 12:14:31,454 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2022-11-20 12:14:31,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-20 12:14:31,455 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-20 12:14:31,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-20 12:14:31,455 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_int [2022-11-20 12:14:31,456 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_int [2022-11-20 12:14:31,456 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_cleanup [2022-11-20 12:14:31,456 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_cleanup [2022-11-20 12:14:31,456 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-11-20 12:14:31,456 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-11-20 12:14:31,457 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2022-11-20 12:14:31,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2022-11-20 12:14:31,457 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-20 12:14:31,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-20 12:14:31,457 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_maxp [2022-11-20 12:14:31,458 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_maxp [2022-11-20 12:14:31,458 INFO L130 BoogieDeclarations]: Found specification of procedure usb_autopm_get_interface [2022-11-20 12:14:31,458 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_autopm_get_interface [2022-11-20 12:14:31,458 INFO L130 BoogieDeclarations]: Found specification of procedure acm_write_buffers_free [2022-11-20 12:14:31,458 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_write_buffers_free [2022-11-20 12:14:31,459 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-20 12:14:31,459 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-20 12:14:31,459 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2022-11-20 12:14:31,459 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2022-11-20 12:14:31,460 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-20 12:14:31,460 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-20 12:14:31,460 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_in [2022-11-20 12:14:31,460 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_in [2022-11-20 12:14:31,460 INFO L130 BoogieDeclarations]: Found specification of procedure device_create_file [2022-11-20 12:14:31,461 INFO L138 BoogieDeclarations]: Found implementation of procedure device_create_file [2022-11-20 12:14:31,461 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-20 12:14:31,461 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-20 12:14:31,461 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-20 12:14:31,461 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-20 12:14:31,462 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-20 12:14:31,462 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-20 12:14:31,462 INFO L130 BoogieDeclarations]: Found specification of procedure tty_port_put [2022-11-20 12:14:31,462 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_port_put [2022-11-20 12:14:31,462 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_chars_in_buffer [2022-11-20 12:14:31,463 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_chars_in_buffer [2022-11-20 12:14:31,463 INFO L130 BoogieDeclarations]: Found specification of procedure acm_resume [2022-11-20 12:14:31,463 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_resume [2022-11-20 12:14:31,463 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 12:14:31,463 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-20 12:14:31,464 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-20 12:14:31,464 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-20 12:14:31,464 INFO L130 BoogieDeclarations]: Found specification of procedure acm_ctrl_msg [2022-11-20 12:14:31,464 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_ctrl_msg [2022-11-20 12:14:31,464 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_coherent [2022-11-20 12:14:31,465 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_coherent [2022-11-20 12:14:31,465 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 12:14:31,465 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_hangup [2022-11-20 12:14:31,465 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_hangup [2022-11-20 12:14:31,465 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ifnum_to_if [2022-11-20 12:14:31,466 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ifnum_to_if [2022-11-20 12:14:31,466 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2022-11-20 12:14:31,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2022-11-20 12:14:31,466 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-20 12:14:31,466 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-20 12:14:31,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-11-20 12:14:31,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-11-20 12:14:31,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2022-11-20 12:14:31,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-20 12:14:31,467 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 12:14:31,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-20 12:14:31,468 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-11-20 12:14:31,468 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-11-20 12:14:31,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2022-11-20 12:14:31,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-20 12:14:31,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-11-20 12:14:31,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2022-11-20 12:14:31,469 INFO L130 BoogieDeclarations]: Found specification of procedure put_tty_driver [2022-11-20 12:14:31,469 INFO L138 BoogieDeclarations]: Found implementation of procedure put_tty_driver [2022-11-20 12:14:31,469 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-11-20 12:14:31,470 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-11-20 12:14:31,470 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_tiocmget [2022-11-20 12:14:31,470 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_tiocmget [2022-11-20 12:14:31,470 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2022-11-20 12:14:31,470 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2022-11-20 12:14:31,471 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_set_termios [2022-11-20 12:14:31,471 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_set_termios [2022-11-20 12:14:31,471 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_from_anchor [2022-11-20 12:14:31,471 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_from_anchor [2022-11-20 12:14:31,471 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2022-11-20 12:14:31,472 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2022-11-20 12:14:31,472 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-20 12:14:31,472 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-20 12:14:31,472 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2022-11-20 12:14:31,472 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2022-11-20 12:14:31,473 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_break_ctl [2022-11-20 12:14:31,473 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_break_ctl [2022-11-20 12:14:31,473 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-20 12:14:31,473 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-20 12:14:31,473 INFO L130 BoogieDeclarations]: Found specification of procedure usb_autopm_put_interface [2022-11-20 12:14:31,474 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_autopm_put_interface [2022-11-20 12:14:31,474 INFO L130 BoogieDeclarations]: Found specification of procedure acm_start_wb [2022-11-20 12:14:31,474 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_start_wb [2022-11-20 12:14:31,474 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_bulk [2022-11-20 12:14:31,475 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_bulk [2022-11-20 12:14:31,475 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-20 12:14:31,475 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-20 12:14:31,475 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-11-20 12:14:31,475 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-11-20 12:14:31,476 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_throttle [2022-11-20 12:14:31,476 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_throttle [2022-11-20 12:14:31,476 INFO L130 BoogieDeclarations]: Found specification of procedure acm_wb_is_avail [2022-11-20 12:14:31,476 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_wb_is_avail [2022-11-20 12:14:31,476 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-20 12:14:31,477 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-20 12:14:31,477 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2022-11-20 12:14:31,477 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2022-11-20 12:14:31,477 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-11-20 12:14:31,477 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-11-20 12:14:31,478 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_write_room [2022-11-20 12:14:31,478 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_write_room [2022-11-20 12:14:31,478 INFO L130 BoogieDeclarations]: Found specification of procedure acm_submit_read_urb [2022-11-20 12:14:31,478 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_submit_read_urb [2022-11-20 12:14:31,479 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_int_urb [2022-11-20 12:14:31,479 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_int_urb [2022-11-20 12:14:31,479 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-20 12:14:31,479 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-20 12:14:31,479 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2022-11-20 12:14:31,480 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2022-11-20 12:14:31,480 INFO L130 BoogieDeclarations]: Found specification of procedure acm_write_done [2022-11-20 12:14:31,480 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_write_done [2022-11-20 12:14:31,480 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_ioctl [2022-11-20 12:14:31,480 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_ioctl [2022-11-20 12:14:31,481 INFO L130 BoogieDeclarations]: Found specification of procedure acm_release_minor [2022-11-20 12:14:31,481 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_release_minor [2022-11-20 12:14:31,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2022-11-20 12:14:31,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2022-11-20 12:14:31,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-11-20 12:14:31,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2022-11-20 12:14:31,482 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2022-11-20 12:14:31,482 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2022-11-20 12:14:31,482 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-20 12:14:31,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-20 12:14:31,482 INFO L130 BoogieDeclarations]: Found specification of procedure usb_autopm_put_interface_async [2022-11-20 12:14:31,483 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_autopm_put_interface_async [2022-11-20 12:14:31,483 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_unthrottle [2022-11-20 12:14:31,499 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_unthrottle [2022-11-20 12:14:31,499 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 12:14:31,499 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 12:14:31,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 12:14:31,500 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-20 12:14:31,500 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2022-11-20 12:14:31,500 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2022-11-20 12:14:31,500 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2022-11-20 12:14:31,501 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2022-11-20 12:14:31,501 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2022-11-20 12:14:31,501 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2022-11-20 12:14:31,501 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2022-11-20 12:14:31,501 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_coherent [2022-11-20 12:14:31,502 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_coherent [2022-11-20 12:14:31,502 INFO L130 BoogieDeclarations]: Found specification of procedure acm_port_dtr_rts [2022-11-20 12:14:31,502 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_port_dtr_rts [2022-11-20 12:14:31,502 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-11-20 12:14:31,502 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-11-20 12:14:31,502 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2022-11-20 12:14:31,503 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2022-11-20 12:14:31,503 INFO L130 BoogieDeclarations]: Found specification of procedure acm_read_buffers_free [2022-11-20 12:14:31,503 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_read_buffers_free [2022-11-20 12:14:31,503 INFO L130 BoogieDeclarations]: Found specification of procedure acm_submit_read_urbs [2022-11-20 12:14:31,503 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_submit_read_urbs [2022-11-20 12:14:31,504 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_install [2022-11-20 12:14:31,504 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_install [2022-11-20 12:14:31,504 INFO L130 BoogieDeclarations]: Found specification of procedure stop_data_traffic [2022-11-20 12:14:31,504 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_data_traffic [2022-11-20 12:14:31,504 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2022-11-20 12:14:31,505 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2022-11-20 12:14:31,505 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-20 12:14:31,505 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-20 12:14:31,505 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2022-11-20 12:14:31,505 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2022-11-20 12:14:31,506 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2022-11-20 12:14:31,506 INFO L130 BoogieDeclarations]: Found specification of procedure device_remove_file [2022-11-20 12:14:31,506 INFO L138 BoogieDeclarations]: Found implementation of procedure device_remove_file [2022-11-20 12:14:31,506 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_tiocmset [2022-11-20 12:14:31,506 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_tiocmset [2022-11-20 12:14:31,507 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:14:31,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:14:31,507 INFO L130 BoogieDeclarations]: Found specification of procedure tty_unregister_driver [2022-11-20 12:14:31,507 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_unregister_driver [2022-11-20 12:14:31,507 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-20 12:14:31,507 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-20 12:14:32,713 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:14:32,720 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:14:33,473 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-20 12:15:24,758 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:15:24,780 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:15:24,780 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-20 12:15:24,785 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:15:24 BoogieIcfgContainer [2022-11-20 12:15:24,785 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:15:24,789 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 12:15:24,789 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 12:15:24,793 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 12:15:24,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:14:25" (1/3) ... [2022-11-20 12:15:24,794 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43cfaae9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:15:24, skipping insertion in model container [2022-11-20 12:15:24,794 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:14:30" (2/3) ... [2022-11-20 12:15:24,794 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43cfaae9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:15:24, skipping insertion in model container [2022-11-20 12:15:24,795 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:15:24" (3/3) ... [2022-11-20 12:15:24,796 INFO L112 eAbstractionObserver]: Analyzing ICFG 43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--class--cdc-acm.ko-entry_point.cil.out.i [2022-11-20 12:15:24,820 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 12:15:24,820 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 12:15:24,934 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:15:24,942 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;@30941a7f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:15:24,942 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 12:15:24,956 INFO L276 IsEmpty]: Start isEmpty. Operand has 1416 states, 1003 states have (on average 1.3320039880358923) internal successors, (1336), 1018 states have internal predecessors, (1336), 330 states have call successors, (330), 82 states have call predecessors, (330), 81 states have return successors, (322), 322 states have call predecessors, (322), 322 states have call successors, (322) [2022-11-20 12:15:24,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-11-20 12:15:24,994 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:15:24,995 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:15:24,996 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:15:25,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:15:25,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1539001672, now seen corresponding path program 1 times [2022-11-20 12:15:25,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:15:25,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [759016917] [2022-11-20 12:15:25,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:15:25,033 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 12:15:25,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:15:25,039 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat -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 12:15:25,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat -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 12:15:28,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:28,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 4128 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 12:15:28,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:15:28,464 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-11-20 12:15:28,464 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:15:28,465 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:15:28,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [759016917] [2022-11-20 12:15:28,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [759016917] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:15:28,466 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:15:28,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:15:28,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310533886] [2022-11-20 12:15:28,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:15:28,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:15:28,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:15:28,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:15:28,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:15:28,562 INFO L87 Difference]: Start difference. First operand has 1416 states, 1003 states have (on average 1.3320039880358923) internal successors, (1336), 1018 states have internal predecessors, (1336), 330 states have call successors, (330), 82 states have call predecessors, (330), 81 states have return successors, (322), 322 states have call predecessors, (322), 322 states have call successors, (322) Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-20 12:15:29,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:15:29,183 INFO L93 Difference]: Finished difference Result 2830 states and 4049 transitions. [2022-11-20 12:15:29,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:15:29,187 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 130 [2022-11-20 12:15:29,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:15:29,222 INFO L225 Difference]: With dead ends: 2830 [2022-11-20 12:15:29,223 INFO L226 Difference]: Without dead ends: 1395 [2022-11-20 12:15:29,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:15:29,251 INFO L413 NwaCegarLoop]: 1982 mSDtfsCounter, 2 mSDsluCounter, 3959 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 5941 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:15:29,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 5941 Invalid, 13 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 12:15:29,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1395 states. [2022-11-20 12:15:29,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1395 to 1395. [2022-11-20 12:15:29,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1395 states, 994 states have (on average 1.3229376257545271) internal successors, (1315), 999 states have internal predecessors, (1315), 320 states have call successors, (320), 81 states have call predecessors, (320), 80 states have return successors, (319), 319 states have call predecessors, (319), 319 states have call successors, (319) [2022-11-20 12:15:29,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1395 states to 1395 states and 1954 transitions. [2022-11-20 12:15:29,468 INFO L78 Accepts]: Start accepts. Automaton has 1395 states and 1954 transitions. Word has length 130 [2022-11-20 12:15:29,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:15:29,471 INFO L495 AbstractCegarLoop]: Abstraction has 1395 states and 1954 transitions. [2022-11-20 12:15:29,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-20 12:15:29,472 INFO L276 IsEmpty]: Start isEmpty. Operand 1395 states and 1954 transitions. [2022-11-20 12:15:29,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-11-20 12:15:29,496 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:15:29,497 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:15:29,566 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat -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 12:15:29,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat -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 12:15:29,713 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:15:29,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:15:29,714 INFO L85 PathProgramCache]: Analyzing trace with hash -1748732336, now seen corresponding path program 1 times [2022-11-20 12:15:29,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:15:29,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1535801964] [2022-11-20 12:15:29,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:15:29,719 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 12:15:29,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:15:29,721 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat -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 12:15:29,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat -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 12:15:33,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:33,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 4139 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 12:15:33,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:15:33,364 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-11-20 12:15:33,365 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:15:34,088 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-11-20 12:15:34,089 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:15:34,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1535801964] [2022-11-20 12:15:34,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1535801964] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:15:34,089 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:15:34,090 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-20 12:15:34,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643352042] [2022-11-20 12:15:34,090 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:15:34,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:15:34,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:15:34,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:15:34,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:15:34,093 INFO L87 Difference]: Start difference. First operand 1395 states and 1954 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 2 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-20 12:15:35,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:15:35,333 INFO L93 Difference]: Finished difference Result 2769 states and 3882 transitions. [2022-11-20 12:15:35,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 12:15:35,334 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 2 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 131 [2022-11-20 12:15:35,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:15:35,345 INFO L225 Difference]: With dead ends: 2769 [2022-11-20 12:15:35,345 INFO L226 Difference]: Without dead ends: 1404 [2022-11-20 12:15:35,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2022-11-20 12:15:35,352 INFO L413 NwaCegarLoop]: 1949 mSDtfsCounter, 11 mSDsluCounter, 9726 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 11675 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 12:15:35,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 11675 Invalid, 63 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 12:15:35,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1404 states. [2022-11-20 12:15:35,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1404 to 1404. [2022-11-20 12:15:35,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1404 states, 1002 states have (on average 1.3233532934131738) internal successors, (1326), 1007 states have internal predecessors, (1326), 320 states have call successors, (320), 82 states have call predecessors, (320), 81 states have return successors, (319), 319 states have call predecessors, (319), 319 states have call successors, (319) [2022-11-20 12:15:35,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1404 states to 1404 states and 1965 transitions. [2022-11-20 12:15:35,426 INFO L78 Accepts]: Start accepts. Automaton has 1404 states and 1965 transitions. Word has length 131 [2022-11-20 12:15:35,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:15:35,427 INFO L495 AbstractCegarLoop]: Abstraction has 1404 states and 1965 transitions. [2022-11-20 12:15:35,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 2 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-20 12:15:35,428 INFO L276 IsEmpty]: Start isEmpty. Operand 1404 states and 1965 transitions. [2022-11-20 12:15:35,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-20 12:15:35,434 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:15:35,434 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:15:35,490 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat -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 12:15:35,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat -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 12:15:35,648 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:15:35,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:15:35,648 INFO L85 PathProgramCache]: Analyzing trace with hash -1455337656, now seen corresponding path program 2 times [2022-11-20 12:15:35,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:15:35,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [225554011] [2022-11-20 12:15:35,655 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:15:35,655 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 12:15:35,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:15:35,657 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat -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 12:15:35,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat -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 12:15:38,266 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 12:15:38,266 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:15:38,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 3867 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:15:38,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:15:40,295 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 374 trivial. 0 not checked. [2022-11-20 12:15:40,295 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:15:40,295 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:15:40,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [225554011] [2022-11-20 12:15:40,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [225554011] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:15:40,296 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:15:40,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:15:40,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473415588] [2022-11-20 12:15:40,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:15:40,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:15:40,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:15:40,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:15:40,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:15:40,298 INFO L87 Difference]: Start difference. First operand 1404 states and 1965 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2022-11-20 12:15:40,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:15:40,500 INFO L93 Difference]: Finished difference Result 1474 states and 2039 transitions. [2022-11-20 12:15:40,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:15:40,501 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 134 [2022-11-20 12:15:40,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:15:40,513 INFO L225 Difference]: With dead ends: 1474 [2022-11-20 12:15:40,515 INFO L226 Difference]: Without dead ends: 1471 [2022-11-20 12:15:40,516 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 132 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 12:15:40,520 INFO L413 NwaCegarLoop]: 1978 mSDtfsCounter, 1741 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1741 SdHoareTripleChecker+Valid, 2168 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:15:40,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1741 Valid, 2168 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:15:40,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1471 states. [2022-11-20 12:15:40,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1471 to 1471. [2022-11-20 12:15:40,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1471 states, 1047 states have (on average 1.3170964660936009) internal successors, (1379), 1052 states have internal predecessors, (1379), 329 states have call successors, (329), 95 states have call predecessors, (329), 94 states have return successors, (328), 328 states have call predecessors, (328), 328 states have call successors, (328) [2022-11-20 12:15:40,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1471 states to 1471 states and 2036 transitions. [2022-11-20 12:15:40,607 INFO L78 Accepts]: Start accepts. Automaton has 1471 states and 2036 transitions. Word has length 134 [2022-11-20 12:15:40,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:15:40,617 INFO L495 AbstractCegarLoop]: Abstraction has 1471 states and 2036 transitions. [2022-11-20 12:15:40,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2022-11-20 12:15:40,618 INFO L276 IsEmpty]: Start isEmpty. Operand 1471 states and 2036 transitions. [2022-11-20 12:15:40,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-20 12:15:40,624 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:15:40,624 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:15:40,675 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat -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 12:15:40,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat -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 12:15:40,848 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:15:40,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:15:40,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1902671209, now seen corresponding path program 1 times [2022-11-20 12:15:40,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:15:40,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1839743297] [2022-11-20 12:15:40,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:15:40,853 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 12:15:40,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:15:40,854 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat -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 12:15:40,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat -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 12:15:44,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:44,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 4696 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:15:44,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:15:44,728 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 374 trivial. 0 not checked. [2022-11-20 12:15:44,729 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:15:44,729 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:15:44,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1839743297] [2022-11-20 12:15:44,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1839743297] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:15:44,729 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:15:44,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:15:44,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510876599] [2022-11-20 12:15:44,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:15:44,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:15:44,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:15:44,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:15:44,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:15:44,731 INFO L87 Difference]: Start difference. First operand 1471 states and 2036 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-20 12:15:46,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:15:46,701 INFO L93 Difference]: Finished difference Result 3890 states and 5348 transitions. [2022-11-20 12:15:46,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:15:46,702 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 134 [2022-11-20 12:15:46,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:15:46,717 INFO L225 Difference]: With dead ends: 3890 [2022-11-20 12:15:46,717 INFO L226 Difference]: Without dead ends: 2460 [2022-11-20 12:15:46,724 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 132 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 12:15:46,728 INFO L413 NwaCegarLoop]: 2177 mSDtfsCounter, 1307 mSDsluCounter, 1821 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1307 SdHoareTripleChecker+Valid, 3998 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-20 12:15:46,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1307 Valid, 3998 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-20 12:15:46,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2460 states. [2022-11-20 12:15:46,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2460 to 2455. [2022-11-20 12:15:46,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2455 states, 1738 states have (on average 1.3049482163406214) internal successors, (2268), 1748 states have internal predecessors, (2268), 549 states have call successors, (549), 168 states have call predecessors, (549), 167 states have return successors, (548), 547 states have call predecessors, (548), 548 states have call successors, (548) [2022-11-20 12:15:46,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2455 states to 2455 states and 3365 transitions. [2022-11-20 12:15:46,898 INFO L78 Accepts]: Start accepts. Automaton has 2455 states and 3365 transitions. Word has length 134 [2022-11-20 12:15:46,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:15:46,900 INFO L495 AbstractCegarLoop]: Abstraction has 2455 states and 3365 transitions. [2022-11-20 12:15:46,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-20 12:15:46,901 INFO L276 IsEmpty]: Start isEmpty. Operand 2455 states and 3365 transitions. [2022-11-20 12:15:46,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-20 12:15:46,905 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:15:46,906 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 4, 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] [2022-11-20 12:15:46,986 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat -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 12:15:47,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat -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 12:15:47,120 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:15:47,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:15:47,120 INFO L85 PathProgramCache]: Analyzing trace with hash 732528354, now seen corresponding path program 1 times [2022-11-20 12:15:47,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:15:47,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2002390816] [2022-11-20 12:15:47,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:15:47,125 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 12:15:47,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:15:47,126 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat -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 12:15:47,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat -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 12:15:49,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:49,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 4181 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:15:49,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:15:50,127 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 381 trivial. 0 not checked. [2022-11-20 12:15:50,127 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:15:50,127 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:15:50,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2002390816] [2022-11-20 12:15:50,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2002390816] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:15:50,128 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:15:50,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:15:50,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801413761] [2022-11-20 12:15:50,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:15:50,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:15:50,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:15:50,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:15:50,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:15:50,131 INFO L87 Difference]: Start difference. First operand 2455 states and 3365 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-20 12:15:51,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:15:51,728 INFO L93 Difference]: Finished difference Result 5995 states and 8196 transitions. [2022-11-20 12:15:51,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:15:51,729 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 152 [2022-11-20 12:15:51,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:15:51,768 INFO L225 Difference]: With dead ends: 5995 [2022-11-20 12:15:51,768 INFO L226 Difference]: Without dead ends: 3579 [2022-11-20 12:15:51,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 150 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 12:15:51,780 INFO L413 NwaCegarLoop]: 2133 mSDtfsCounter, 1125 mSDsluCounter, 1884 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1125 SdHoareTripleChecker+Valid, 4017 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:15:51,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1125 Valid, 4017 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-20 12:15:51,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3579 states. [2022-11-20 12:15:52,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3579 to 3574. [2022-11-20 12:15:52,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3574 states, 2555 states have (on average 1.3107632093933463) internal successors, (3349), 2568 states have internal predecessors, (3349), 766 states have call successors, (766), 253 states have call predecessors, (766), 252 states have return successors, (765), 763 states have call predecessors, (765), 765 states have call successors, (765) [2022-11-20 12:15:52,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3574 states to 3574 states and 4880 transitions. [2022-11-20 12:15:52,060 INFO L78 Accepts]: Start accepts. Automaton has 3574 states and 4880 transitions. Word has length 152 [2022-11-20 12:15:52,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:15:52,061 INFO L495 AbstractCegarLoop]: Abstraction has 3574 states and 4880 transitions. [2022-11-20 12:15:52,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-20 12:15:52,061 INFO L276 IsEmpty]: Start isEmpty. Operand 3574 states and 4880 transitions. [2022-11-20 12:15:52,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2022-11-20 12:15:52,072 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:15:52,072 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 4, 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] [2022-11-20 12:15:52,136 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat -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 12:15:52,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat -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 12:15:52,299 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:15:52,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:15:52,300 INFO L85 PathProgramCache]: Analyzing trace with hash 1792689668, now seen corresponding path program 1 times [2022-11-20 12:15:52,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:15:52,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1041407450] [2022-11-20 12:15:52,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:15:52,306 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 12:15:52,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:15:52,312 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat -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 12:15:52,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat -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 12:15:56,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:56,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 4834 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-20 12:15:56,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:15:58,407 INFO L134 CoverageAnalysis]: Checked inductivity of 558 backedges. 172 proven. 0 refuted. 0 times theorem prover too weak. 386 trivial. 0 not checked. [2022-11-20 12:15:58,407 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:15:58,407 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:15:58,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1041407450] [2022-11-20 12:15:58,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1041407450] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:15:58,408 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:15:58,408 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 12:15:58,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367051727] [2022-11-20 12:15:58,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:15:58,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 12:15:58,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:15:58,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 12:15:58,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-11-20 12:15:58,412 INFO L87 Difference]: Start difference. First operand 3574 states and 4880 transitions. Second operand has 12 states, 10 states have (on average 8.9) internal successors, (89), 9 states have internal predecessors, (89), 4 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (23), 5 states have call predecessors, (23), 4 states have call successors, (23) [2022-11-20 12:16:08,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:16:08,847 INFO L93 Difference]: Finished difference Result 10519 states and 15066 transitions. [2022-11-20 12:16:08,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 12:16:08,848 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 8.9) internal successors, (89), 9 states have internal predecessors, (89), 4 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (23), 5 states have call predecessors, (23), 4 states have call successors, (23) Word has length 186 [2022-11-20 12:16:08,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:16:08,894 INFO L225 Difference]: With dead ends: 10519 [2022-11-20 12:16:08,894 INFO L226 Difference]: Without dead ends: 6986 [2022-11-20 12:16:08,908 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2022-11-20 12:16:08,909 INFO L413 NwaCegarLoop]: 2442 mSDtfsCounter, 2848 mSDsluCounter, 24007 mSDsCounter, 0 mSdLazyCounter, 819 mSolverCounterSat, 552 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3032 SdHoareTripleChecker+Valid, 26449 SdHoareTripleChecker+Invalid, 1371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 552 IncrementalHoareTripleChecker+Valid, 819 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:16:08,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3032 Valid, 26449 Invalid, 1371 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [552 Valid, 819 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time] [2022-11-20 12:16:08,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6986 states. [2022-11-20 12:16:09,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6986 to 3602. [2022-11-20 12:16:09,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3602 states, 2575 states have (on average 1.3083495145631068) internal successors, (3369), 2588 states have internal predecessors, (3369), 770 states have call successors, (770), 253 states have call predecessors, (770), 256 states have return successors, (791), 771 states have call predecessors, (791), 769 states have call successors, (791) [2022-11-20 12:16:09,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3602 states to 3602 states and 4930 transitions. [2022-11-20 12:16:09,374 INFO L78 Accepts]: Start accepts. Automaton has 3602 states and 4930 transitions. Word has length 186 [2022-11-20 12:16:09,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:16:09,375 INFO L495 AbstractCegarLoop]: Abstraction has 3602 states and 4930 transitions. [2022-11-20 12:16:09,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 8.9) internal successors, (89), 9 states have internal predecessors, (89), 4 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (23), 5 states have call predecessors, (23), 4 states have call successors, (23) [2022-11-20 12:16:09,375 INFO L276 IsEmpty]: Start isEmpty. Operand 3602 states and 4930 transitions. [2022-11-20 12:16:09,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2022-11-20 12:16:09,387 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:16:09,388 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 4, 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] [2022-11-20 12:16:09,473 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat -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 12:16:09,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat -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 12:16:09,611 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:16:09,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:16:09,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1375293062, now seen corresponding path program 1 times [2022-11-20 12:16:09,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:16:09,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1703079802] [2022-11-20 12:16:09,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:16:09,620 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 12:16:09,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:16:09,621 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat -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 12:16:09,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat -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 12:16:13,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:16:13,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 4834 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 12:16:13,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:16:14,037 INFO L134 CoverageAnalysis]: Checked inductivity of 558 backedges. 172 proven. 0 refuted. 0 times theorem prover too weak. 386 trivial. 0 not checked. [2022-11-20 12:16:14,037 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:16:14,037 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:16:14,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1703079802] [2022-11-20 12:16:14,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1703079802] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:16:14,038 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:16:14,038 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:16:14,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110876938] [2022-11-20 12:16:14,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:16:14,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:16:14,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:16:14,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:16:14,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:16:14,040 INFO L87 Difference]: Start difference. First operand 3602 states and 4930 transitions. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 3 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-11-20 12:16:15,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:16:15,083 INFO L93 Difference]: Finished difference Result 7175 states and 9820 transitions. [2022-11-20 12:16:15,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:16:15,084 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 3 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 186 [2022-11-20 12:16:15,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:16:15,107 INFO L225 Difference]: With dead ends: 7175 [2022-11-20 12:16:15,107 INFO L226 Difference]: Without dead ends: 3602 [2022-11-20 12:16:15,119 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 183 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 12:16:15,120 INFO L413 NwaCegarLoop]: 1951 mSDtfsCounter, 3 mSDsluCounter, 3895 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 5846 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 12:16:15,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 5846 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-20 12:16:15,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3602 states. [2022-11-20 12:16:15,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3602 to 3602. [2022-11-20 12:16:15,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3602 states, 2575 states have (on average 1.3067961165048543) internal successors, (3365), 2588 states have internal predecessors, (3365), 770 states have call successors, (770), 253 states have call predecessors, (770), 256 states have return successors, (791), 771 states have call predecessors, (791), 769 states have call successors, (791) [2022-11-20 12:16:15,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3602 states to 3602 states and 4926 transitions. [2022-11-20 12:16:15,556 INFO L78 Accepts]: Start accepts. Automaton has 3602 states and 4926 transitions. Word has length 186 [2022-11-20 12:16:15,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:16:15,557 INFO L495 AbstractCegarLoop]: Abstraction has 3602 states and 4926 transitions. [2022-11-20 12:16:15,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 3 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-11-20 12:16:15,557 INFO L276 IsEmpty]: Start isEmpty. Operand 3602 states and 4926 transitions. [2022-11-20 12:16:15,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-20 12:16:15,566 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:16:15,567 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 4, 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] [2022-11-20 12:16:15,637 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat -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 12:16:15,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat -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 12:16:15,792 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:16:15,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:16:15,792 INFO L85 PathProgramCache]: Analyzing trace with hash 984828833, now seen corresponding path program 1 times [2022-11-20 12:16:15,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:16:15,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [750269766] [2022-11-20 12:16:15,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:16:15,799 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 12:16:15,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:16:15,801 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat -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 12:16:15,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat -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 12:16:20,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:16:20,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 5554 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-20 12:16:20,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:16:21,354 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 374 trivial. 0 not checked. [2022-11-20 12:16:21,354 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:16:21,354 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:16:21,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [750269766] [2022-11-20 12:16:21,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [750269766] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:16:21,355 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:16:21,355 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 12:16:21,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894621959] [2022-11-20 12:16:21,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:16:21,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:16:21,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:16:21,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:16:21,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:16:21,357 INFO L87 Difference]: Start difference. First operand 3602 states and 4926 transitions. Second operand has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (23), 4 states have call predecessors, (23), 3 states have call successors, (23) [2022-11-20 12:16:25,205 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:16:26,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:16:26,243 INFO L93 Difference]: Finished difference Result 7500 states and 10228 transitions. [2022-11-20 12:16:26,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 12:16:26,244 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (23), 4 states have call predecessors, (23), 3 states have call successors, (23) Word has length 188 [2022-11-20 12:16:26,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:16:26,268 INFO L225 Difference]: With dead ends: 7500 [2022-11-20 12:16:26,268 INFO L226 Difference]: Without dead ends: 3896 [2022-11-20 12:16:26,281 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2022-11-20 12:16:26,282 INFO L413 NwaCegarLoop]: 2007 mSDtfsCounter, 473 mSDsluCounter, 11907 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 475 SdHoareTripleChecker+Valid, 13914 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:16:26,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [475 Valid, 13914 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 56 Invalid, 1 Unknown, 0 Unchecked, 3.3s Time] [2022-11-20 12:16:26,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3896 states. [2022-11-20 12:16:26,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3896 to 3889. [2022-11-20 12:16:26,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3889 states, 2779 states have (on average 1.3051457358762144) internal successors, (3627), 2798 states have internal predecessors, (3627), 824 states have call successors, (824), 281 states have call predecessors, (824), 285 states have return successors, (842), 820 states have call predecessors, (842), 823 states have call successors, (842) [2022-11-20 12:16:26,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3889 states to 3889 states and 5293 transitions. [2022-11-20 12:16:26,738 INFO L78 Accepts]: Start accepts. Automaton has 3889 states and 5293 transitions. Word has length 188 [2022-11-20 12:16:26,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:16:26,738 INFO L495 AbstractCegarLoop]: Abstraction has 3889 states and 5293 transitions. [2022-11-20 12:16:26,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (23), 4 states have call predecessors, (23), 3 states have call successors, (23) [2022-11-20 12:16:26,740 INFO L276 IsEmpty]: Start isEmpty. Operand 3889 states and 5293 transitions. [2022-11-20 12:16:26,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2022-11-20 12:16:26,751 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:16:26,751 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 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] [2022-11-20 12:16:26,835 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat -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 12:16:26,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat -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 12:16:26,968 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:16:26,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:16:26,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1796984657, now seen corresponding path program 1 times [2022-11-20 12:16:26,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:16:26,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [188401028] [2022-11-20 12:16:26,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:16:26,976 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 12:16:26,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:16:26,977 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat -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 12:16:27,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat -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 12:16:31,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:16:31,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 5631 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 12:16:31,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:16:31,829 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 449 trivial. 0 not checked. [2022-11-20 12:16:31,830 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:16:31,830 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:16:31,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [188401028] [2022-11-20 12:16:31,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [188401028] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:16:31,831 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:16:31,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:16:31,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655147504] [2022-11-20 12:16:31,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:16:31,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:16:31,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:16:31,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:16:31,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:16:31,834 INFO L87 Difference]: Start difference. First operand 3889 states and 5293 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-20 12:16:35,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:16:35,661 INFO L93 Difference]: Finished difference Result 9058 states and 12695 transitions. [2022-11-20 12:16:35,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:16:35,662 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 217 [2022-11-20 12:16:35,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:16:35,701 INFO L225 Difference]: With dead ends: 9058 [2022-11-20 12:16:35,701 INFO L226 Difference]: Without dead ends: 5517 [2022-11-20 12:16:35,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:16:35,717 INFO L413 NwaCegarLoop]: 2813 mSDtfsCounter, 2820 mSDsluCounter, 2122 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2820 SdHoareTripleChecker+Valid, 4935 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:16:35,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2820 Valid, 4935 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-11-20 12:16:35,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5517 states. [2022-11-20 12:16:36,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5517 to 3893. [2022-11-20 12:16:36,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3893 states, 2783 states have (on average 1.304707150556953) internal successors, (3631), 2802 states have internal predecessors, (3631), 824 states have call successors, (824), 281 states have call predecessors, (824), 285 states have return successors, (842), 820 states have call predecessors, (842), 823 states have call successors, (842) [2022-11-20 12:16:36,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3893 states to 3893 states and 5297 transitions. [2022-11-20 12:16:36,294 INFO L78 Accepts]: Start accepts. Automaton has 3893 states and 5297 transitions. Word has length 217 [2022-11-20 12:16:36,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:16:36,300 INFO L495 AbstractCegarLoop]: Abstraction has 3893 states and 5297 transitions. [2022-11-20 12:16:36,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-20 12:16:36,301 INFO L276 IsEmpty]: Start isEmpty. Operand 3893 states and 5297 transitions. [2022-11-20 12:16:36,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2022-11-20 12:16:36,314 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:16:36,314 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 4, 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] [2022-11-20 12:16:36,403 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat -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 12:16:36,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat -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 12:16:36,529 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:16:36,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:16:36,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1469010991, now seen corresponding path program 1 times [2022-11-20 12:16:36,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:16:36,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [741354432] [2022-11-20 12:16:36,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:16:36,544 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 12:16:36,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:16:36,545 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat -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 12:16:36,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat -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 12:16:42,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:16:42,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 6167 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 12:16:42,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:16:42,926 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 172 proven. 0 refuted. 0 times theorem prover too weak. 398 trivial. 0 not checked. [2022-11-20 12:16:42,927 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:16:42,927 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:16:42,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [741354432] [2022-11-20 12:16:42,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [741354432] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:16:42,927 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:16:42,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:16:42,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781968816] [2022-11-20 12:16:42,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:16:42,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:16:42,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:16:42,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:16:42,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:16:42,930 INFO L87 Difference]: Start difference. First operand 3893 states and 5297 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 3 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2022-11-20 12:16:44,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:16:44,170 INFO L93 Difference]: Finished difference Result 7412 states and 10103 transitions. [2022-11-20 12:16:44,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:16:44,171 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 3 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) Word has length 214 [2022-11-20 12:16:44,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:16:44,192 INFO L225 Difference]: With dead ends: 7412 [2022-11-20 12:16:44,192 INFO L226 Difference]: Without dead ends: 3821 [2022-11-20 12:16:44,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:16:44,207 INFO L413 NwaCegarLoop]: 1947 mSDtfsCounter, 8 mSDsluCounter, 5826 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 7773 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-20 12:16:44,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 7773 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-20 12:16:44,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3821 states. [2022-11-20 12:16:44,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3821 to 3807. [2022-11-20 12:16:44,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3807 states, 2723 states have (on average 1.307014322438487) internal successors, (3559), 2743 states have internal predecessors, (3559), 806 states have call successors, (806), 273 states have call predecessors, (806), 277 states have return successors, (824), 801 states have call predecessors, (824), 805 states have call successors, (824) [2022-11-20 12:16:44,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3807 states to 3807 states and 5189 transitions. [2022-11-20 12:16:44,731 INFO L78 Accepts]: Start accepts. Automaton has 3807 states and 5189 transitions. Word has length 214 [2022-11-20 12:16:44,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:16:44,732 INFO L495 AbstractCegarLoop]: Abstraction has 3807 states and 5189 transitions. [2022-11-20 12:16:44,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 3 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2022-11-20 12:16:44,733 INFO L276 IsEmpty]: Start isEmpty. Operand 3807 states and 5189 transitions. [2022-11-20 12:16:44,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2022-11-20 12:16:44,743 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:16:44,744 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 4, 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] [2022-11-20 12:16:44,856 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat -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 12:16:44,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat -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 12:16:44,972 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:16:44,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:16:44,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1930170700, now seen corresponding path program 1 times [2022-11-20 12:16:44,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:16:44,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [320069154] [2022-11-20 12:16:44,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:16:44,980 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 12:16:44,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:16:44,981 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat -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 12:16:45,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat -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 12:16:50,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:16:51,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 6209 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:16:51,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:16:51,542 INFO L134 CoverageAnalysis]: Checked inductivity of 638 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 506 trivial. 0 not checked. [2022-11-20 12:16:51,542 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:16:51,542 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:16:51,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [320069154] [2022-11-20 12:16:51,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [320069154] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:16:51,542 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:16:51,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:16:51,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003586378] [2022-11-20 12:16:51,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:16:51,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:16:51,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:16:51,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:16:51,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:16:51,545 INFO L87 Difference]: Start difference. First operand 3807 states and 5189 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 3 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2022-11-20 12:16:54,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:16:54,623 INFO L93 Difference]: Finished difference Result 9231 states and 12631 transitions. [2022-11-20 12:16:54,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:16:54,623 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 3 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) Word has length 219 [2022-11-20 12:16:54,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:16:54,651 INFO L225 Difference]: With dead ends: 9231 [2022-11-20 12:16:54,651 INFO L226 Difference]: Without dead ends: 5772 [2022-11-20 12:16:54,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 217 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 12:16:54,667 INFO L413 NwaCegarLoop]: 2754 mSDtfsCounter, 1737 mSDsluCounter, 1808 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1737 SdHoareTripleChecker+Valid, 4562 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-20 12:16:54,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1737 Valid, 4562 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-20 12:16:54,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5772 states. [2022-11-20 12:16:55,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5772 to 5767. [2022-11-20 12:16:55,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5767 states, 4157 states have (on average 1.3052682222756795) internal successors, (5426), 4187 states have internal predecessors, (5426), 1192 states have call successors, (1192), 411 states have call predecessors, (1192), 417 states have return successors, (1219), 1185 states have call predecessors, (1219), 1191 states have call successors, (1219) [2022-11-20 12:16:55,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5767 states to 5767 states and 7837 transitions. [2022-11-20 12:16:55,247 INFO L78 Accepts]: Start accepts. Automaton has 5767 states and 7837 transitions. Word has length 219 [2022-11-20 12:16:55,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:16:55,248 INFO L495 AbstractCegarLoop]: Abstraction has 5767 states and 7837 transitions. [2022-11-20 12:16:55,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 3 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2022-11-20 12:16:55,249 INFO L276 IsEmpty]: Start isEmpty. Operand 5767 states and 7837 transitions. [2022-11-20 12:16:55,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2022-11-20 12:16:55,258 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:16:55,259 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 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] [2022-11-20 12:16:55,371 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat -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 12:16:55,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat -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 12:16:55,484 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:16:55,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:16:55,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1670601581, now seen corresponding path program 1 times [2022-11-20 12:16:55,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:16:55,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1005109553] [2022-11-20 12:16:55,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:16:55,492 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 12:16:55,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:16:55,494 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat -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 12:16:55,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat -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 12:17:00,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:17:01,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 5694 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:17:01,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:17:01,934 INFO L134 CoverageAnalysis]: Checked inductivity of 646 backedges. 229 proven. 0 refuted. 0 times theorem prover too weak. 417 trivial. 0 not checked. [2022-11-20 12:17:01,934 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:17:01,934 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:17:01,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1005109553] [2022-11-20 12:17:01,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1005109553] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:17:01,935 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:17:01,935 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:17:01,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085717241] [2022-11-20 12:17:01,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:17:01,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:17:01,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:17:01,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:17:01,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:17:01,937 INFO L87 Difference]: Start difference. First operand 5767 states and 7837 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (34), 3 states have call predecessors, (34), 3 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) [2022-11-20 12:17:04,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:17:04,086 INFO L93 Difference]: Finished difference Result 13070 states and 17730 transitions. [2022-11-20 12:17:04,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:17:04,087 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (34), 3 states have call predecessors, (34), 3 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) Word has length 237 [2022-11-20 12:17:04,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:17:04,121 INFO L225 Difference]: With dead ends: 13070 [2022-11-20 12:17:04,121 INFO L226 Difference]: Without dead ends: 7651 [2022-11-20 12:17:04,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 235 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 12:17:04,141 INFO L413 NwaCegarLoop]: 2501 mSDtfsCounter, 1639 mSDsluCounter, 1355 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1639 SdHoareTripleChecker+Valid, 3856 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:17:04,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1639 Valid, 3856 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-20 12:17:04,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7651 states. [2022-11-20 12:17:04,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7651 to 7624. [2022-11-20 12:17:04,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7624 states, 5532 states have (on average 1.306760665220535) internal successors, (7229), 5571 states have internal predecessors, (7229), 1521 states have call successors, (1521), 561 states have call predecessors, (1521), 570 states have return successors, (1551), 1511 states have call predecessors, (1551), 1520 states have call successors, (1551) [2022-11-20 12:17:04,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7624 states to 7624 states and 10301 transitions. [2022-11-20 12:17:04,911 INFO L78 Accepts]: Start accepts. Automaton has 7624 states and 10301 transitions. Word has length 237 [2022-11-20 12:17:04,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:17:04,912 INFO L495 AbstractCegarLoop]: Abstraction has 7624 states and 10301 transitions. [2022-11-20 12:17:04,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (34), 3 states have call predecessors, (34), 3 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) [2022-11-20 12:17:04,912 INFO L276 IsEmpty]: Start isEmpty. Operand 7624 states and 10301 transitions. [2022-11-20 12:17:04,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2022-11-20 12:17:04,928 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:17:04,928 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:17:05,023 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat -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 12:17:05,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat -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 12:17:05,144 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:17:05,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:17:05,145 INFO L85 PathProgramCache]: Analyzing trace with hash 1867583043, now seen corresponding path program 1 times [2022-11-20 12:17:05,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:17:05,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [3999544] [2022-11-20 12:17:05,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:17:05,152 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 12:17:05,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:17:05,154 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat -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 12:17:05,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat -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 12:17:11,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:17:11,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 6326 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 12:17:11,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:17:12,410 INFO L134 CoverageAnalysis]: Checked inductivity of 654 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 640 trivial. 0 not checked. [2022-11-20 12:17:12,410 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:17:12,411 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:17:12,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [3999544] [2022-11-20 12:17:12,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [3999544] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:17:12,411 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:17:12,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 12:17:12,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956689082] [2022-11-20 12:17:12,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:17:12,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:17:12,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:17:12,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:17:12,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:17:12,415 INFO L87 Difference]: Start difference. First operand 7624 states and 10301 transitions. Second operand has 6 states, 5 states have (on average 23.0) internal successors, (115), 5 states have internal predecessors, (115), 3 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2022-11-20 12:17:17,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:17:17,136 INFO L93 Difference]: Finished difference Result 15993 states and 21797 transitions. [2022-11-20 12:17:17,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:17:17,137 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 23.0) internal successors, (115), 5 states have internal predecessors, (115), 3 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) Word has length 241 [2022-11-20 12:17:17,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:17:17,174 INFO L225 Difference]: With dead ends: 15993 [2022-11-20 12:17:17,174 INFO L226 Difference]: Without dead ends: 8717 [2022-11-20 12:17:17,190 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:17:17,191 INFO L413 NwaCegarLoop]: 2650 mSDtfsCounter, 705 mSDsluCounter, 9800 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 884 SdHoareTripleChecker+Valid, 12450 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-20 12:17:17,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [884 Valid, 12450 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-11-20 12:17:17,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8717 states. [2022-11-20 12:17:18,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8717 to 7624. [2022-11-20 12:17:18,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7624 states, 5532 states have (on average 1.3062183658712943) internal successors, (7226), 5571 states have internal predecessors, (7226), 1521 states have call successors, (1521), 561 states have call predecessors, (1521), 570 states have return successors, (1551), 1511 states have call predecessors, (1551), 1520 states have call successors, (1551) [2022-11-20 12:17:18,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7624 states to 7624 states and 10298 transitions. [2022-11-20 12:17:18,304 INFO L78 Accepts]: Start accepts. Automaton has 7624 states and 10298 transitions. Word has length 241 [2022-11-20 12:17:18,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:17:18,305 INFO L495 AbstractCegarLoop]: Abstraction has 7624 states and 10298 transitions. [2022-11-20 12:17:18,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 23.0) internal successors, (115), 5 states have internal predecessors, (115), 3 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2022-11-20 12:17:18,305 INFO L276 IsEmpty]: Start isEmpty. Operand 7624 states and 10298 transitions. [2022-11-20 12:17:18,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2022-11-20 12:17:18,324 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:17:18,325 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:17:18,440 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat -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 12:17:18,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat -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 12:17:18,552 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:17:18,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:17:18,552 INFO L85 PathProgramCache]: Analyzing trace with hash 2115729537, now seen corresponding path program 1 times [2022-11-20 12:17:18,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:17:18,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [266012149] [2022-11-20 12:17:18,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:17:18,559 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 12:17:18,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:17:18,561 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat -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 12:17:18,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat -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 12:17:25,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:17:25,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 6326 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 12:17:25,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:17:26,116 INFO L134 CoverageAnalysis]: Checked inductivity of 654 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 654 trivial. 0 not checked. [2022-11-20 12:17:26,116 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:17:26,116 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:17:26,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [266012149] [2022-11-20 12:17:26,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [266012149] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:17:26,116 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:17:26,117 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:17:26,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046688340] [2022-11-20 12:17:26,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:17:26,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:17:26,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:17:26,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:17:26,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:17:26,118 INFO L87 Difference]: Start difference. First operand 7624 states and 10298 transitions. Second operand has 5 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 3 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2022-11-20 12:17:27,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:17:27,035 INFO L93 Difference]: Finished difference Result 7639 states and 10312 transitions. [2022-11-20 12:17:27,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:17:27,036 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 3 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) Word has length 241 [2022-11-20 12:17:27,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:17:27,069 INFO L225 Difference]: With dead ends: 7639 [2022-11-20 12:17:27,070 INFO L226 Difference]: Without dead ends: 7636 [2022-11-20 12:17:27,074 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:17:27,075 INFO L413 NwaCegarLoop]: 1934 mSDtfsCounter, 11 mSDsluCounter, 5770 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 7704 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:17:27,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 7704 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 12:17:27,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7636 states. [2022-11-20 12:17:28,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7636 to 7636. [2022-11-20 12:17:28,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7636 states, 5541 states have (on average 1.3053600433134813) internal successors, (7233), 5580 states have internal predecessors, (7233), 1521 states have call successors, (1521), 564 states have call predecessors, (1521), 573 states have return successors, (1551), 1511 states have call predecessors, (1551), 1520 states have call successors, (1551) [2022-11-20 12:17:28,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7636 states to 7636 states and 10305 transitions. [2022-11-20 12:17:28,042 INFO L78 Accepts]: Start accepts. Automaton has 7636 states and 10305 transitions. Word has length 241 [2022-11-20 12:17:28,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:17:28,043 INFO L495 AbstractCegarLoop]: Abstraction has 7636 states and 10305 transitions. [2022-11-20 12:17:28,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 3 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2022-11-20 12:17:28,044 INFO L276 IsEmpty]: Start isEmpty. Operand 7636 states and 10305 transitions. [2022-11-20 12:17:28,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2022-11-20 12:17:28,057 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:17:28,058 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 4, 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] [2022-11-20 12:17:28,151 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-20 12:17:28,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat -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 12:17:28,284 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:17:28,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:17:28,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1054418884, now seen corresponding path program 1 times [2022-11-20 12:17:28,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:17:28,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2024618111] [2022-11-20 12:17:28,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:17:28,290 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 12:17:28,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:17:28,291 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat -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 12:17:28,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat -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 12:17:34,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:17:34,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 5998 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 12:17:34,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:17:34,474 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 646 trivial. 0 not checked. [2022-11-20 12:17:34,474 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:17:34,474 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:17:34,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2024618111] [2022-11-20 12:17:34,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2024618111] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:17:34,475 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:17:34,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:17:34,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136414277] [2022-11-20 12:17:34,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:17:34,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:17:34,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:17:34,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:17:34,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:17:34,478 INFO L87 Difference]: Start difference. First operand 7636 states and 10305 transitions. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-20 12:17:39,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:17:39,353 INFO L93 Difference]: Finished difference Result 17989 states and 24361 transitions. [2022-11-20 12:17:39,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:17:39,355 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 255 [2022-11-20 12:17:39,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:17:39,390 INFO L225 Difference]: With dead ends: 17989 [2022-11-20 12:17:39,390 INFO L226 Difference]: Without dead ends: 10701 [2022-11-20 12:17:39,407 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:17:39,408 INFO L413 NwaCegarLoop]: 3524 mSDtfsCounter, 1955 mSDsluCounter, 5063 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1955 SdHoareTripleChecker+Valid, 8587 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-20 12:17:39,408 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1955 Valid, 8587 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-11-20 12:17:39,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10701 states. [2022-11-20 12:17:40,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10701 to 7642. [2022-11-20 12:17:40,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7642 states, 5547 states have (on average 1.3050297458085451) internal successors, (7239), 5586 states have internal predecessors, (7239), 1521 states have call successors, (1521), 564 states have call predecessors, (1521), 573 states have return successors, (1551), 1511 states have call predecessors, (1551), 1520 states have call successors, (1551) [2022-11-20 12:17:40,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7642 states to 7642 states and 10311 transitions. [2022-11-20 12:17:40,431 INFO L78 Accepts]: Start accepts. Automaton has 7642 states and 10311 transitions. Word has length 255 [2022-11-20 12:17:40,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:17:40,432 INFO L495 AbstractCegarLoop]: Abstraction has 7642 states and 10311 transitions. [2022-11-20 12:17:40,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-20 12:17:40,433 INFO L276 IsEmpty]: Start isEmpty. Operand 7642 states and 10311 transitions. [2022-11-20 12:17:40,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2022-11-20 12:17:40,442 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:17:40,443 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 4, 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] [2022-11-20 12:17:40,506 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-20 12:17:40,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat -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 12:17:40,644 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:17:40,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:17:40,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1180150679, now seen corresponding path program 1 times [2022-11-20 12:17:40,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:17:40,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1757915229] [2022-11-20 12:17:40,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:17:40,649 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 12:17:40,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:17:40,650 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat -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 12:17:40,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat -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 12:17:46,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:17:46,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 6001 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 12:17:46,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:17:46,629 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 646 trivial. 0 not checked. [2022-11-20 12:17:46,630 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:17:46,630 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:17:46,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1757915229] [2022-11-20 12:17:46,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1757915229] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:17:46,631 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:17:46,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:17:46,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681850604] [2022-11-20 12:17:46,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:17:46,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:17:46,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:17:46,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:17:46,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:17:46,633 INFO L87 Difference]: Start difference. First operand 7642 states and 10311 transitions. Second operand has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-20 12:17:51,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:17:51,509 INFO L93 Difference]: Finished difference Result 18004 states and 24376 transitions. [2022-11-20 12:17:51,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:17:51,511 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 257 [2022-11-20 12:17:51,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:17:51,547 INFO L225 Difference]: With dead ends: 18004 [2022-11-20 12:17:51,547 INFO L226 Difference]: Without dead ends: 10710 [2022-11-20 12:17:51,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 255 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:17:51,570 INFO L413 NwaCegarLoop]: 3527 mSDtfsCounter, 1955 mSDsluCounter, 5063 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1955 SdHoareTripleChecker+Valid, 8590 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:17:51,570 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1955 Valid, 8590 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-11-20 12:17:51,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10710 states. [2022-11-20 12:17:52,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10710 to 7642. [2022-11-20 12:17:52,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7642 states, 5547 states have (on average 1.3050297458085451) internal successors, (7239), 5586 states have internal predecessors, (7239), 1521 states have call successors, (1521), 564 states have call predecessors, (1521), 573 states have return successors, (1551), 1511 states have call predecessors, (1551), 1520 states have call successors, (1551) [2022-11-20 12:17:52,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7642 states to 7642 states and 10311 transitions. [2022-11-20 12:17:52,815 INFO L78 Accepts]: Start accepts. Automaton has 7642 states and 10311 transitions. Word has length 257 [2022-11-20 12:17:52,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:17:52,816 INFO L495 AbstractCegarLoop]: Abstraction has 7642 states and 10311 transitions. [2022-11-20 12:17:52,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-20 12:17:52,816 INFO L276 IsEmpty]: Start isEmpty. Operand 7642 states and 10311 transitions. [2022-11-20 12:17:52,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2022-11-20 12:17:52,831 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:17:52,831 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:17:52,895 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat -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 12:17:53,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat -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 12:17:53,032 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:17:53,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:17:53,032 INFO L85 PathProgramCache]: Analyzing trace with hash -495818438, now seen corresponding path program 1 times [2022-11-20 12:17:53,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:17:53,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [489868424] [2022-11-20 12:17:53,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:17:53,038 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 12:17:53,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:17:53,040 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat -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 12:17:53,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat -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 12:17:59,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:17:59,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 6060 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:17:59,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:17:59,730 INFO L134 CoverageAnalysis]: Checked inductivity of 661 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 641 trivial. 0 not checked. [2022-11-20 12:17:59,730 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:17:59,731 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:17:59,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [489868424] [2022-11-20 12:17:59,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [489868424] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:17:59,732 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:17:59,732 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:17:59,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206714577] [2022-11-20 12:17:59,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:17:59,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:17:59,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:17:59,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:17:59,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:17:59,735 INFO L87 Difference]: Start difference. First operand 7642 states and 10311 transitions. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-20 12:18:03,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:18:03,249 INFO L93 Difference]: Finished difference Result 17395 states and 23957 transitions. [2022-11-20 12:18:03,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:18:03,252 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 273 [2022-11-20 12:18:03,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:18:03,277 INFO L225 Difference]: With dead ends: 17395 [2022-11-20 12:18:03,277 INFO L226 Difference]: Without dead ends: 10101 [2022-11-20 12:18:03,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 271 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 12:18:03,294 INFO L413 NwaCegarLoop]: 2518 mSDtfsCounter, 467 mSDsluCounter, 1989 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 581 SdHoareTripleChecker+Valid, 4507 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:18:03,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [581 Valid, 4507 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-20 12:18:03,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10101 states. [2022-11-20 12:18:04,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10101 to 7651. [2022-11-20 12:18:04,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7651 states, 5556 states have (on average 1.304535637149028) internal successors, (7248), 5595 states have internal predecessors, (7248), 1521 states have call successors, (1521), 564 states have call predecessors, (1521), 573 states have return successors, (1551), 1511 states have call predecessors, (1551), 1520 states have call successors, (1551) [2022-11-20 12:18:04,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7651 states to 7651 states and 10320 transitions. [2022-11-20 12:18:04,675 INFO L78 Accepts]: Start accepts. Automaton has 7651 states and 10320 transitions. Word has length 273 [2022-11-20 12:18:04,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:18:04,675 INFO L495 AbstractCegarLoop]: Abstraction has 7651 states and 10320 transitions. [2022-11-20 12:18:04,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-20 12:18:04,676 INFO L276 IsEmpty]: Start isEmpty. Operand 7651 states and 10320 transitions. [2022-11-20 12:18:04,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2022-11-20 12:18:04,685 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:18:04,685 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 4, 4, 4, 4, 4, 4, 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, 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] [2022-11-20 12:18:04,754 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat -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)] Ended with exit code 0 [2022-11-20 12:18:04,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat -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 12:18:04,886 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:18:04,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:18:04,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1637050762, now seen corresponding path program 1 times [2022-11-20 12:18:04,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:18:04,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1942781970] [2022-11-20 12:18:04,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:18:04,895 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 12:18:04,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:18:04,896 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat -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 12:18:04,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat -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 12:18:11,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:18:11,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 6173 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-20 12:18:11,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:18:17,356 INFO L134 CoverageAnalysis]: Checked inductivity of 726 backedges. 247 proven. 9 refuted. 0 times theorem prover too weak. 470 trivial. 0 not checked. [2022-11-20 12:18:17,357 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:18:26,754 INFO L134 CoverageAnalysis]: Checked inductivity of 726 backedges. 63 proven. 9 refuted. 0 times theorem prover too weak. 654 trivial. 0 not checked. [2022-11-20 12:18:26,755 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:18:26,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1942781970] [2022-11-20 12:18:26,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1942781970] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:18:26,755 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:18:26,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 28 [2022-11-20 12:18:26,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693313919] [2022-11-20 12:18:26,756 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:18:26,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-20 12:18:26,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:18:26,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-20 12:18:26,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=678, Unknown=0, NotChecked=0, Total=756 [2022-11-20 12:18:26,759 INFO L87 Difference]: Start difference. First operand 7651 states and 10320 transitions. Second operand has 28 states, 27 states have (on average 7.407407407407407) internal successors, (200), 20 states have internal predecessors, (200), 11 states have call successors, (57), 3 states have call predecessors, (57), 10 states have return successors, (58), 16 states have call predecessors, (58), 11 states have call successors, (58) [2022-11-20 12:19:16,730 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:19:21,411 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:19:22,525 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:19:23,612 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:20:18,345 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 12:21:46,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:21:46,257 INFO L93 Difference]: Finished difference Result 31965 states and 44864 transitions. [2022-11-20 12:21:46,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-11-20 12:21:46,259 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 7.407407407407407) internal successors, (200), 20 states have internal predecessors, (200), 11 states have call successors, (57), 3 states have call predecessors, (57), 10 states have return successors, (58), 16 states have call predecessors, (58), 11 states have call successors, (58) Word has length 311 [2022-11-20 12:21:46,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:21:46,341 INFO L225 Difference]: With dead ends: 31965 [2022-11-20 12:21:46,342 INFO L226 Difference]: Without dead ends: 24662 [2022-11-20 12:21:46,364 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 654 GetRequests, 600 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 550 ImplicationChecksByTransitivity, 17.7s TimeCoverageRelationStatistics Valid=359, Invalid=2721, Unknown=0, NotChecked=0, Total=3080 [2022-11-20 12:21:46,365 INFO L413 NwaCegarLoop]: 4087 mSDtfsCounter, 10034 mSDsluCounter, 66407 mSDsCounter, 0 mSdLazyCounter, 10680 mSolverCounterSat, 3528 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 177.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10368 SdHoareTripleChecker+Valid, 70494 SdHoareTripleChecker+Invalid, 14209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 3528 IncrementalHoareTripleChecker+Valid, 10680 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 184.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:21:46,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10368 Valid, 70494 Invalid, 14209 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [3528 Valid, 10680 Invalid, 1 Unknown, 0 Unchecked, 184.4s Time] [2022-11-20 12:21:46,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24662 states. [2022-11-20 12:21:48,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24662 to 14999. [2022-11-20 12:21:48,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14999 states, 10902 states have (on average 1.3054485415520087) internal successors, (14232), 10981 states have internal predecessors, (14232), 2971 states have call successors, (2971), 1098 states have call predecessors, (2971), 1125 states have return successors, (3065), 2959 states have call predecessors, (3065), 2970 states have call successors, (3065) [2022-11-20 12:21:48,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14999 states to 14999 states and 20268 transitions. [2022-11-20 12:21:48,610 INFO L78 Accepts]: Start accepts. Automaton has 14999 states and 20268 transitions. Word has length 311 [2022-11-20 12:21:48,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:21:48,611 INFO L495 AbstractCegarLoop]: Abstraction has 14999 states and 20268 transitions. [2022-11-20 12:21:48,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 7.407407407407407) internal successors, (200), 20 states have internal predecessors, (200), 11 states have call successors, (57), 3 states have call predecessors, (57), 10 states have return successors, (58), 16 states have call predecessors, (58), 11 states have call successors, (58) [2022-11-20 12:21:48,612 INFO L276 IsEmpty]: Start isEmpty. Operand 14999 states and 20268 transitions. [2022-11-20 12:21:48,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2022-11-20 12:21:48,632 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:21:48,632 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 4, 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, 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] [2022-11-20 12:21:48,708 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-20 12:21:48,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat -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 12:21:48,847 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:21:48,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:21:48,848 INFO L85 PathProgramCache]: Analyzing trace with hash 150549037, now seen corresponding path program 2 times [2022-11-20 12:21:48,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:21:48,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [269813876] [2022-11-20 12:21:48,852 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:21:48,852 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 12:21:48,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:21:48,853 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat -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 12:21:48,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat -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 12:21:52,186 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 12:21:52,186 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:21:52,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 3802 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 12:21:52,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:21:52,564 INFO L134 CoverageAnalysis]: Checked inductivity of 683 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 683 trivial. 0 not checked. [2022-11-20 12:21:52,564 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:21:52,564 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:21:52,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [269813876] [2022-11-20 12:21:52,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [269813876] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:21:52,565 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:21:52,565 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:21:52,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794221819] [2022-11-20 12:21:52,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:21:52,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:21:52,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:21:52,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:21:52,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:21:52,567 INFO L87 Difference]: Start difference. First operand 14999 states and 20268 transitions. Second operand has 5 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 3 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (36), 1 states have call predecessors, (36), 1 states have call successors, (36) [2022-11-20 12:21:54,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:21:54,970 INFO L93 Difference]: Finished difference Result 15050 states and 20330 transitions. [2022-11-20 12:21:54,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:21:54,971 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 3 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (36), 1 states have call predecessors, (36), 1 states have call successors, (36) Word has length 291 [2022-11-20 12:21:54,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:21:55,020 INFO L225 Difference]: With dead ends: 15050 [2022-11-20 12:21:55,020 INFO L226 Difference]: Without dead ends: 15047 [2022-11-20 12:21:55,027 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 287 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:21:55,028 INFO L413 NwaCegarLoop]: 1940 mSDtfsCounter, 16 mSDsluCounter, 5780 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 7720 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:21:55,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 7720 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 12:21:55,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15047 states. [2022-11-20 12:21:57,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15047 to 15023. [2022-11-20 12:21:57,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15023 states, 10920 states have (on average 1.304945054945055) internal successors, (14250), 10999 states have internal predecessors, (14250), 2971 states have call successors, (2971), 1104 states have call predecessors, (2971), 1131 states have return successors, (3065), 2959 states have call predecessors, (3065), 2970 states have call successors, (3065) [2022-11-20 12:21:57,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15023 states to 15023 states and 20286 transitions. [2022-11-20 12:21:57,570 INFO L78 Accepts]: Start accepts. Automaton has 15023 states and 20286 transitions. Word has length 291 [2022-11-20 12:21:57,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:21:57,570 INFO L495 AbstractCegarLoop]: Abstraction has 15023 states and 20286 transitions. [2022-11-20 12:21:57,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 3 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (36), 1 states have call predecessors, (36), 1 states have call successors, (36) [2022-11-20 12:21:57,571 INFO L276 IsEmpty]: Start isEmpty. Operand 15023 states and 20286 transitions. [2022-11-20 12:21:57,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2022-11-20 12:21:57,600 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:21:57,600 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:21:57,644 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat -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 12:21:57,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat -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 12:21:57,801 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:21:57,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:21:57,802 INFO L85 PathProgramCache]: Analyzing trace with hash -1854981513, now seen corresponding path program 1 times [2022-11-20 12:21:57,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:21:57,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1426992913] [2022-11-20 12:21:57,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:21:57,807 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 12:21:57,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:21:57,808 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat -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 12:21:57,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat -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 12:22:04,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:22:05,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 6185 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 12:22:05,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:22:05,494 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 660 trivial. 0 not checked. [2022-11-20 12:22:05,495 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:22:05,495 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:22:05,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1426992913] [2022-11-20 12:22:05,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1426992913] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:22:05,495 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:22:05,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 12:22:05,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517739027] [2022-11-20 12:22:05,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:22:05,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:22:05,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:22:05,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:22:05,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:22:05,498 INFO L87 Difference]: Start difference. First operand 15023 states and 20286 transitions. Second operand has 6 states, 5 states have (on average 30.8) internal successors, (154), 5 states have internal predecessors, (154), 3 states have call successors, (43), 2 states have call predecessors, (43), 3 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) [2022-11-20 12:22:13,174 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:22:15,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:22:15,770 INFO L93 Difference]: Finished difference Result 34070 states and 46891 transitions. [2022-11-20 12:22:15,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:22:15,771 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 30.8) internal successors, (154), 5 states have internal predecessors, (154), 3 states have call successors, (43), 2 states have call predecessors, (43), 3 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) Word has length 314 [2022-11-20 12:22:15,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:22:15,828 INFO L225 Difference]: With dead ends: 34070 [2022-11-20 12:22:15,829 INFO L226 Difference]: Without dead ends: 19395 [2022-11-20 12:22:15,852 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 309 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:22:15,852 INFO L413 NwaCegarLoop]: 2467 mSDtfsCounter, 399 mSDsluCounter, 9340 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 487 SdHoareTripleChecker+Valid, 11807 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:22:15,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [487 Valid, 11807 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2022-11-20 12:22:15,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19395 states. [2022-11-20 12:22:18,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19395 to 15023. [2022-11-20 12:22:18,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15023 states, 10920 states have (on average 1.3043956043956044) internal successors, (14244), 10999 states have internal predecessors, (14244), 2971 states have call successors, (2971), 1104 states have call predecessors, (2971), 1131 states have return successors, (3065), 2959 states have call predecessors, (3065), 2970 states have call successors, (3065) [2022-11-20 12:22:18,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15023 states to 15023 states and 20280 transitions. [2022-11-20 12:22:18,054 INFO L78 Accepts]: Start accepts. Automaton has 15023 states and 20280 transitions. Word has length 314 [2022-11-20 12:22:18,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:22:18,055 INFO L495 AbstractCegarLoop]: Abstraction has 15023 states and 20280 transitions. [2022-11-20 12:22:18,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 30.8) internal successors, (154), 5 states have internal predecessors, (154), 3 states have call successors, (43), 2 states have call predecessors, (43), 3 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) [2022-11-20 12:22:18,055 INFO L276 IsEmpty]: Start isEmpty. Operand 15023 states and 20280 transitions. [2022-11-20 12:22:18,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2022-11-20 12:22:18,082 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:22:18,082 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 4, 4, 4, 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, 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] [2022-11-20 12:22:18,141 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat -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 12:22:18,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat -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 12:22:18,283 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:22:18,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:22:18,284 INFO L85 PathProgramCache]: Analyzing trace with hash 641827038, now seen corresponding path program 1 times [2022-11-20 12:22:18,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:22:18,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1735171023] [2022-11-20 12:22:18,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:22:18,291 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 12:22:18,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:22:18,292 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat -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 12:22:18,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat -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 12:22:24,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:22:24,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 6219 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 12:22:24,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:22:24,826 INFO L134 CoverageAnalysis]: Checked inductivity of 697 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 671 trivial. 0 not checked. [2022-11-20 12:22:24,826 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:22:24,826 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:22:24,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1735171023] [2022-11-20 12:22:24,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1735171023] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:22:24,827 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:22:24,827 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:22:24,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119730983] [2022-11-20 12:22:24,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:22:24,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:22:24,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:22:24,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:22:24,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:22:24,830 INFO L87 Difference]: Start difference. First operand 15023 states and 20280 transitions. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 2 states have call successors, (45), 2 states have call predecessors, (45), 2 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2022-11-20 12:22:31,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:22:31,896 INFO L93 Difference]: Finished difference Result 35900 states and 48620 transitions. [2022-11-20 12:22:31,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:22:31,897 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 2 states have call successors, (45), 2 states have call predecessors, (45), 2 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) Word has length 323 [2022-11-20 12:22:31,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:22:31,951 INFO L225 Difference]: With dead ends: 35900 [2022-11-20 12:22:31,951 INFO L226 Difference]: Without dead ends: 21225 [2022-11-20 12:22:31,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 321 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:22:31,976 INFO L413 NwaCegarLoop]: 3525 mSDtfsCounter, 1954 mSDsluCounter, 5060 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1954 SdHoareTripleChecker+Valid, 8585 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:22:31,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1954 Valid, 8585 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-11-20 12:22:31,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21225 states. [2022-11-20 12:22:34,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21225 to 15023. [2022-11-20 12:22:34,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15023 states, 10920 states have (on average 1.3043956043956044) internal successors, (14244), 10999 states have internal predecessors, (14244), 2971 states have call successors, (2971), 1104 states have call predecessors, (2971), 1131 states have return successors, (3065), 2959 states have call predecessors, (3065), 2970 states have call successors, (3065) [2022-11-20 12:22:34,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15023 states to 15023 states and 20280 transitions. [2022-11-20 12:22:34,499 INFO L78 Accepts]: Start accepts. Automaton has 15023 states and 20280 transitions. Word has length 323 [2022-11-20 12:22:34,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:22:34,499 INFO L495 AbstractCegarLoop]: Abstraction has 15023 states and 20280 transitions. [2022-11-20 12:22:34,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 2 states have call successors, (45), 2 states have call predecessors, (45), 2 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2022-11-20 12:22:34,500 INFO L276 IsEmpty]: Start isEmpty. Operand 15023 states and 20280 transitions. [2022-11-20 12:22:34,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2022-11-20 12:22:34,527 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:22:34,528 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:22:34,616 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat -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 12:22:34,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat -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 12:22:34,745 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:22:34,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:22:34,745 INFO L85 PathProgramCache]: Analyzing trace with hash 527420500, now seen corresponding path program 1 times [2022-11-20 12:22:34,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:22:34,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1873790314] [2022-11-20 12:22:34,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:22:34,752 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 12:22:34,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:22:34,753 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat -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 12:22:34,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat -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 12:22:40,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:22:41,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 6174 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 12:22:41,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:22:41,359 INFO L134 CoverageAnalysis]: Checked inductivity of 672 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 647 trivial. 0 not checked. [2022-11-20 12:22:41,359 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:22:41,360 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:22:41,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1873790314] [2022-11-20 12:22:41,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1873790314] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:22:41,360 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:22:41,361 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:22:41,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179763621] [2022-11-20 12:22:41,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:22:41,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:22:41,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:22:41,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:22:41,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:22:41,363 INFO L87 Difference]: Start difference. First operand 15023 states and 20280 transitions. Second operand has 5 states, 5 states have (on average 33.2) internal successors, (166), 5 states have internal predecessors, (166), 2 states have call successors, (42), 2 states have call predecessors, (42), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2022-11-20 12:22:51,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:22:51,036 INFO L93 Difference]: Finished difference Result 47245 states and 67198 transitions. [2022-11-20 12:22:51,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:22:51,040 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.2) internal successors, (166), 5 states have internal predecessors, (166), 2 states have call successors, (42), 2 states have call predecessors, (42), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) Word has length 317 [2022-11-20 12:22:51,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:22:51,131 INFO L225 Difference]: With dead ends: 47245 [2022-11-20 12:22:51,131 INFO L226 Difference]: Without dead ends: 32570 [2022-11-20 12:22:51,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 315 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:22:51,157 INFO L413 NwaCegarLoop]: 3125 mSDtfsCounter, 3620 mSDsluCounter, 8442 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 830 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3782 SdHoareTripleChecker+Valid, 11567 SdHoareTripleChecker+Invalid, 853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 830 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:22:51,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3782 Valid, 11567 Invalid, 853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [830 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-11-20 12:22:51,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32570 states. [2022-11-20 12:22:53,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32570 to 15041. [2022-11-20 12:22:53,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15041 states, 10938 states have (on average 1.303894679100384) internal successors, (14262), 11017 states have internal predecessors, (14262), 2971 states have call successors, (2971), 1104 states have call predecessors, (2971), 1131 states have return successors, (3065), 2959 states have call predecessors, (3065), 2970 states have call successors, (3065) [2022-11-20 12:22:53,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15041 states to 15041 states and 20298 transitions. [2022-11-20 12:22:53,723 INFO L78 Accepts]: Start accepts. Automaton has 15041 states and 20298 transitions. Word has length 317 [2022-11-20 12:22:53,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:22:53,723 INFO L495 AbstractCegarLoop]: Abstraction has 15041 states and 20298 transitions. [2022-11-20 12:22:53,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.2) internal successors, (166), 5 states have internal predecessors, (166), 2 states have call successors, (42), 2 states have call predecessors, (42), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2022-11-20 12:22:53,724 INFO L276 IsEmpty]: Start isEmpty. Operand 15041 states and 20298 transitions. [2022-11-20 12:22:53,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2022-11-20 12:22:53,745 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:22:53,746 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:22:53,812 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat -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 12:22:53,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat -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 12:22:53,947 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:22:53,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:22:53,947 INFO L85 PathProgramCache]: Analyzing trace with hash -361444613, now seen corresponding path program 1 times [2022-11-20 12:22:53,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:22:53,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1686552212] [2022-11-20 12:22:53,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:22:53,952 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 12:22:53,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:22:53,955 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat -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 12:22:53,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat -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 12:23:00,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:00,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 6185 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 12:23:00,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:23:01,253 INFO L134 CoverageAnalysis]: Checked inductivity of 672 backedges. 24 proven. 1 refuted. 0 times theorem prover too weak. 647 trivial. 0 not checked. [2022-11-20 12:23:01,253 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:23:01,877 INFO L134 CoverageAnalysis]: Checked inductivity of 672 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 653 trivial. 0 not checked. [2022-11-20 12:23:01,877 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:23:01,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1686552212] [2022-11-20 12:23:01,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1686552212] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:23:01,878 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:23:01,878 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-11-20 12:23:01,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245475666] [2022-11-20 12:23:01,878 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:23:01,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:23:01,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:23:01,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:23:01,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:23:01,881 INFO L87 Difference]: Start difference. First operand 15041 states and 20298 transitions. Second operand has 6 states, 6 states have (on average 33.833333333333336) internal successors, (203), 6 states have internal predecessors, (203), 4 states have call successors, (55), 2 states have call predecessors, (55), 2 states have return successors, (50), 4 states have call predecessors, (50), 4 states have call successors, (50) [2022-11-20 12:23:29,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:23:29,440 INFO L93 Difference]: Finished difference Result 48902 states and 69739 transitions. [2022-11-20 12:23:29,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:23:29,441 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 33.833333333333336) internal successors, (203), 6 states have internal predecessors, (203), 4 states have call successors, (55), 2 states have call predecessors, (55), 2 states have return successors, (50), 4 states have call predecessors, (50), 4 states have call successors, (50) Word has length 323 [2022-11-20 12:23:29,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:23:29,554 INFO L225 Difference]: With dead ends: 48902 [2022-11-20 12:23:29,554 INFO L226 Difference]: Without dead ends: 34209 [2022-11-20 12:23:29,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 646 GetRequests, 641 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:23:29,584 INFO L413 NwaCegarLoop]: 3443 mSDtfsCounter, 1850 mSDsluCounter, 9624 mSDsCounter, 0 mSdLazyCounter, 947 mSolverCounterSat, 236 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2190 SdHoareTripleChecker+Valid, 13067 SdHoareTripleChecker+Invalid, 1183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 236 IncrementalHoareTripleChecker+Valid, 947 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:23:29,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2190 Valid, 13067 Invalid, 1183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [236 Valid, 947 Invalid, 0 Unknown, 0 Unchecked, 20.0s Time] [2022-11-20 12:23:29,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34209 states. [2022-11-20 12:23:32,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34209 to 15701. [2022-11-20 12:23:32,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15701 states, 11442 states have (on average 1.302045097011012) internal successors, (14898), 11521 states have internal predecessors, (14898), 3127 states have call successors, (3127), 1104 states have call predecessors, (3127), 1131 states have return successors, (3221), 3115 states have call predecessors, (3221), 3126 states have call successors, (3221) [2022-11-20 12:23:32,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15701 states to 15701 states and 21246 transitions. [2022-11-20 12:23:32,494 INFO L78 Accepts]: Start accepts. Automaton has 15701 states and 21246 transitions. Word has length 323 [2022-11-20 12:23:32,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:23:32,495 INFO L495 AbstractCegarLoop]: Abstraction has 15701 states and 21246 transitions. [2022-11-20 12:23:32,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 33.833333333333336) internal successors, (203), 6 states have internal predecessors, (203), 4 states have call successors, (55), 2 states have call predecessors, (55), 2 states have return successors, (50), 4 states have call predecessors, (50), 4 states have call successors, (50) [2022-11-20 12:23:32,496 INFO L276 IsEmpty]: Start isEmpty. Operand 15701 states and 21246 transitions. [2022-11-20 12:23:32,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2022-11-20 12:23:32,531 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:23:32,531 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 4, 4, 4, 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, 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 12:23:32,631 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-11-20 12:23:32,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat -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 12:23:32,756 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:23:32,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:23:32,756 INFO L85 PathProgramCache]: Analyzing trace with hash 650495992, now seen corresponding path program 1 times [2022-11-20 12:23:32,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:23:32,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [163518799] [2022-11-20 12:23:32,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:23:32,764 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 12:23:32,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:23:32,765 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat -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 12:23:32,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-11-20 12:23:39,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:39,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 6260 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:23:39,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:23:39,981 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 671 trivial. 0 not checked. [2022-11-20 12:23:39,990 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:23:39,990 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:23:39,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [163518799] [2022-11-20 12:23:39,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [163518799] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:23:39,991 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:23:39,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:23:39,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770494278] [2022-11-20 12:23:39,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:23:39,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:23:39,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:23:39,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:23:39,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:23:39,994 INFO L87 Difference]: Start difference. First operand 15701 states and 21246 transitions. Second operand has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 2 states have call successors, (47), 2 states have call predecessors, (47), 2 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2022-11-20 12:23:43,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:23:43,503 INFO L93 Difference]: Finished difference Result 31060 states and 42049 transitions. [2022-11-20 12:23:43,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:23:43,506 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 2 states have call successors, (47), 2 states have call predecessors, (47), 2 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) Word has length 342 [2022-11-20 12:23:43,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:23:43,543 INFO L225 Difference]: With dead ends: 31060 [2022-11-20 12:23:43,543 INFO L226 Difference]: Without dead ends: 15707 [2022-11-20 12:23:43,563 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 340 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 12:23:43,565 INFO L413 NwaCegarLoop]: 1932 mSDtfsCounter, 0 mSDsluCounter, 1927 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3859 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-20 12:23:43,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3859 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-20 12:23:43,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15707 states. [2022-11-20 12:23:46,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15707 to 15707. [2022-11-20 12:23:46,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15707 states, 11448 states have (on average 1.3018867924528301) internal successors, (14904), 11527 states have internal predecessors, (14904), 3127 states have call successors, (3127), 1104 states have call predecessors, (3127), 1131 states have return successors, (3221), 3115 states have call predecessors, (3221), 3126 states have call successors, (3221) [2022-11-20 12:23:46,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15707 states to 15707 states and 21252 transitions. [2022-11-20 12:23:46,115 INFO L78 Accepts]: Start accepts. Automaton has 15707 states and 21252 transitions. Word has length 342 [2022-11-20 12:23:46,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:23:46,116 INFO L495 AbstractCegarLoop]: Abstraction has 15707 states and 21252 transitions. [2022-11-20 12:23:46,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 2 states have call successors, (47), 2 states have call predecessors, (47), 2 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2022-11-20 12:23:46,116 INFO L276 IsEmpty]: Start isEmpty. Operand 15707 states and 21252 transitions. [2022-11-20 12:23:46,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2022-11-20 12:23:46,138 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:23:46,139 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 4, 4, 4, 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, 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 12:23:46,209 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-11-20 12:23:46,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat -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 12:23:46,340 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:23:46,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:23:46,341 INFO L85 PathProgramCache]: Analyzing trace with hash -1642585034, now seen corresponding path program 1 times [2022-11-20 12:23:46,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:23:46,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [457455253] [2022-11-20 12:23:46,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:23:46,346 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 12:23:46,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:23:46,347 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat -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 12:23:46,349 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-11-20 12:23:53,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:53,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 6264 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 12:23:53,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:23:53,860 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 673 trivial. 0 not checked. [2022-11-20 12:23:53,861 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:23:53,861 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:23:53,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [457455253] [2022-11-20 12:23:53,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [457455253] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:23:53,862 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:23:53,862 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 12:23:53,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316871791] [2022-11-20 12:23:53,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:23:53,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:23:53,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:23:53,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:23:53,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:23:53,864 INFO L87 Difference]: Start difference. First operand 15707 states and 21252 transitions. Second operand has 6 states, 5 states have (on average 33.2) internal successors, (166), 5 states have internal predecessors, (166), 3 states have call successors, (47), 2 states have call predecessors, (47), 3 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2022-11-20 12:24:03,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:24:03,679 INFO L93 Difference]: Finished difference Result 32568 states and 44329 transitions. [2022-11-20 12:24:03,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:24:03,679 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 33.2) internal successors, (166), 5 states have internal predecessors, (166), 3 states have call successors, (47), 2 states have call predecessors, (47), 3 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) Word has length 342 [2022-11-20 12:24:03,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:24:03,714 INFO L225 Difference]: With dead ends: 32568 [2022-11-20 12:24:03,714 INFO L226 Difference]: Without dead ends: 17209 [2022-11-20 12:24:03,735 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 337 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:24:03,736 INFO L413 NwaCegarLoop]: 2408 mSDtfsCounter, 551 mSDsluCounter, 8883 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 708 SdHoareTripleChecker+Valid, 11291 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:24:03,737 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [708 Valid, 11291 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2022-11-20 12:24:03,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17209 states. [2022-11-20 12:24:05,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17209 to 15707. [2022-11-20 12:24:05,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15707 states, 11448 states have (on average 1.301362683438155) internal successors, (14898), 11527 states have internal predecessors, (14898), 3127 states have call successors, (3127), 1104 states have call predecessors, (3127), 1131 states have return successors, (3221), 3115 states have call predecessors, (3221), 3126 states have call successors, (3221) [2022-11-20 12:24:06,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15707 states to 15707 states and 21246 transitions. [2022-11-20 12:24:06,013 INFO L78 Accepts]: Start accepts. Automaton has 15707 states and 21246 transitions. Word has length 342 [2022-11-20 12:24:06,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:24:06,014 INFO L495 AbstractCegarLoop]: Abstraction has 15707 states and 21246 transitions. [2022-11-20 12:24:06,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 33.2) internal successors, (166), 5 states have internal predecessors, (166), 3 states have call successors, (47), 2 states have call predecessors, (47), 3 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2022-11-20 12:24:06,014 INFO L276 IsEmpty]: Start isEmpty. Operand 15707 states and 21246 transitions. [2022-11-20 12:24:06,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2022-11-20 12:24:06,034 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:24:06,035 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:24:06,098 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-11-20 12:24:06,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat -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 12:24:06,235 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:24:06,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:24:06,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1621285343, now seen corresponding path program 1 times [2022-11-20 12:24:06,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:24:06,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [942861991] [2022-11-20 12:24:06,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:24:06,241 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 12:24:06,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:24:06,243 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat -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 12:24:06,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-11-20 12:24:12,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:24:12,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 6230 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 12:24:12,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:24:13,447 INFO L134 CoverageAnalysis]: Checked inductivity of 696 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 664 trivial. 0 not checked. [2022-11-20 12:24:13,448 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:24:13,448 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:24:13,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [942861991] [2022-11-20 12:24:13,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [942861991] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:24:13,448 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:24:13,448 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:24:13,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915893067] [2022-11-20 12:24:13,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:24:13,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:24:13,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:24:13,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:24:13,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:24:13,450 INFO L87 Difference]: Start difference. First operand 15707 states and 21246 transitions. Second operand has 5 states, 5 states have (on average 33.4) internal successors, (167), 5 states have internal predecessors, (167), 3 states have call successors, (45), 2 states have call predecessors, (45), 2 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) [2022-11-20 12:24:27,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:24:27,470 INFO L93 Difference]: Finished difference Result 42702 states and 58826 transitions. [2022-11-20 12:24:27,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:24:27,471 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 5 states have internal predecessors, (167), 3 states have call successors, (45), 2 states have call predecessors, (45), 2 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) Word has length 333 [2022-11-20 12:24:27,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:24:27,534 INFO L225 Difference]: With dead ends: 42702 [2022-11-20 12:24:27,534 INFO L226 Difference]: Without dead ends: 27343 [2022-11-20 12:24:27,560 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 330 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:24:27,560 INFO L413 NwaCegarLoop]: 3947 mSDtfsCounter, 2572 mSDsluCounter, 8491 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 396 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2742 SdHoareTripleChecker+Valid, 12438 SdHoareTripleChecker+Invalid, 700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 396 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:24:27,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2742 Valid, 12438 Invalid, 700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [396 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time] [2022-11-20 12:24:27,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27343 states. [2022-11-20 12:24:30,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27343 to 15893. [2022-11-20 12:24:30,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15893 states, 11568 states have (on average 1.2992738589211619) internal successors, (15030), 11647 states have internal predecessors, (15030), 3193 states have call successors, (3193), 1104 states have call predecessors, (3193), 1131 states have return successors, (3287), 3181 states have call predecessors, (3287), 3192 states have call successors, (3287) [2022-11-20 12:24:30,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15893 states to 15893 states and 21510 transitions. [2022-11-20 12:24:30,388 INFO L78 Accepts]: Start accepts. Automaton has 15893 states and 21510 transitions. Word has length 333 [2022-11-20 12:24:30,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:24:30,389 INFO L495 AbstractCegarLoop]: Abstraction has 15893 states and 21510 transitions. [2022-11-20 12:24:30,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 5 states have internal predecessors, (167), 3 states have call successors, (45), 2 states have call predecessors, (45), 2 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) [2022-11-20 12:24:30,389 INFO L276 IsEmpty]: Start isEmpty. Operand 15893 states and 21510 transitions. [2022-11-20 12:24:30,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 656 [2022-11-20 12:24:30,418 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:24:30,418 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 11, 11, 10, 8, 7, 7, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:24:30,487 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-11-20 12:24:30,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat -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 12:24:30,619 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:24:30,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:24:30,620 INFO L85 PathProgramCache]: Analyzing trace with hash -1806301938, now seen corresponding path program 1 times [2022-11-20 12:24:30,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:24:30,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [859826356] [2022-11-20 12:24:30,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:24:30,628 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 12:24:30,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:24:30,629 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat -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 12:24:30,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-11-20 12:24:39,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:24:39,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 8141 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 12:24:39,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:24:40,272 INFO L134 CoverageAnalysis]: Checked inductivity of 1194 backedges. 173 proven. 0 refuted. 0 times theorem prover too weak. 1021 trivial. 0 not checked. [2022-11-20 12:24:40,272 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:24:40,272 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:24:40,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [859826356] [2022-11-20 12:24:40,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [859826356] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:24:40,273 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:24:40,273 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:24:40,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027320894] [2022-11-20 12:24:40,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:24:40,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:24:40,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:24:40,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:24:40,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:24:40,275 INFO L87 Difference]: Start difference. First operand 15893 states and 21510 transitions. Second operand has 4 states, 4 states have (on average 70.0) internal successors, (280), 4 states have internal predecessors, (280), 2 states have call successors, (85), 2 states have call predecessors, (85), 2 states have return successors, (80), 2 states have call predecessors, (80), 2 states have call successors, (80) [2022-11-20 12:24:44,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:24:44,803 INFO L93 Difference]: Finished difference Result 25126 states and 34846 transitions. [2022-11-20 12:24:44,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:24:44,804 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 70.0) internal successors, (280), 4 states have internal predecessors, (280), 2 states have call successors, (85), 2 states have call predecessors, (85), 2 states have return successors, (80), 2 states have call predecessors, (80), 2 states have call successors, (80) Word has length 655 [2022-11-20 12:24:44,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:24:44,805 INFO L225 Difference]: With dead ends: 25126 [2022-11-20 12:24:44,806 INFO L226 Difference]: Without dead ends: 0 [2022-11-20 12:24:44,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 656 GetRequests, 653 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:24:44,833 INFO L413 NwaCegarLoop]: 2156 mSDtfsCounter, 1247 mSDsluCounter, 3540 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1345 SdHoareTripleChecker+Valid, 5696 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-20 12:24:44,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1345 Valid, 5696 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-20 12:24:44,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-20 12:24:44,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-20 12:24:44,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:24:44,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-20 12:24:44,836 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 655 [2022-11-20 12:24:44,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:24:44,837 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-20 12:24:44,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 70.0) internal successors, (280), 4 states have internal predecessors, (280), 2 states have call successors, (85), 2 states have call predecessors, (85), 2 states have return successors, (80), 2 states have call predecessors, (80), 2 states have call successors, (80) [2022-11-20 12:24:44,837 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-20 12:24:44,837 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-20 12:24:44,839 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-20 12:24:44,938 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-11-20 12:24:45,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f521c03b-11d3-447b-a8c8-8556201bbc22/bin/uautomizer-ug76WZFUDN/mathsat -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 12:24:45,042 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.