./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-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_f68c899c-6767-4846-b614-f642b557696f/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f68c899c-6767-4846-b614-f642b557696f/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_f68c899c-6767-4846-b614-f642b557696f/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f68c899c-6767-4846-b614-f642b557696f/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-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_f68c899c-6767-4846-b614-f642b557696f/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_f68c899c-6767-4846-b614-f642b557696f/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 234112184b071eb42f340136dfce6e1a552d788d086baea007a05a3140f2d157 --- 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 12:10:39,072 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:10:39,075 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:10:39,100 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:10:39,100 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:10:39,102 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:10:39,103 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:10:39,105 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:10:39,107 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:10:39,108 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:10:39,109 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:10:39,110 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:10:39,111 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:10:39,112 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:10:39,113 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:10:39,114 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:10:39,115 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:10:39,116 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:10:39,118 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:10:39,120 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:10:39,122 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:10:39,124 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:10:39,125 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:10:39,126 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:10:39,130 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:10:39,135 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:10:39,135 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:10:39,136 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:10:39,137 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:10:39,138 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:10:39,140 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:10:39,141 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:10:39,143 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:10:39,144 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:10:39,146 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:10:39,147 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:10:39,149 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:10:39,150 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:10:39,150 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:10:39,152 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:10:39,155 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:10:39,156 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f68c899c-6767-4846-b614-f642b557696f/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-20 12:10:39,203 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:10:39,204 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:10:39,205 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:10:39,205 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:10:39,206 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:10:39,206 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:10:39,207 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:10:39,207 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:10:39,208 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:10:39,208 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:10:39,209 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:10:39,210 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:10:39,210 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:10:39,210 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:10:39,210 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:10:39,211 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:10:39,211 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:10:39,211 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:10:39,211 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:10:39,212 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:10:39,212 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:10:39,212 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:10:39,213 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:10:39,213 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:10:39,213 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:10:39,213 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 12:10:39,214 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 12:10:39,214 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:10:39,214 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:10:39,214 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:10:39,215 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_f68c899c-6767-4846-b614-f642b557696f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f68c899c-6767-4846-b614-f642b557696f/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 234112184b071eb42f340136dfce6e1a552d788d086baea007a05a3140f2d157 [2022-11-20 12:10:39,604 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:10:39,638 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:10:39,643 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:10:39,645 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:10:39,645 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:10:39,647 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f68c899c-6767-4846-b614-f642b557696f/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--class--cdc-acm.ko-entry_point.cil.out.i [2022-11-20 12:10:43,152 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:10:43,876 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:10:43,876 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f68c899c-6767-4846-b614-f642b557696f/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--class--cdc-acm.ko-entry_point.cil.out.i [2022-11-20 12:10:43,921 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f68c899c-6767-4846-b614-f642b557696f/bin/uautomizer-ug76WZFUDN/data/fcdd3459f/989b9a37c8dc452ea82604b96dbdefae/FLAG4a374acbd [2022-11-20 12:10:43,942 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f68c899c-6767-4846-b614-f642b557696f/bin/uautomizer-ug76WZFUDN/data/fcdd3459f/989b9a37c8dc452ea82604b96dbdefae [2022-11-20 12:10:43,946 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:10:43,949 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:10:43,954 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:10:43,954 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:10:43,958 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:10:43,959 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:10:43" (1/1) ... [2022-11-20 12:10:43,961 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ef1809f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:43, skipping insertion in model container [2022-11-20 12:10:43,961 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:10:43" (1/1) ... [2022-11-20 12:10:43,970 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:10:44,140 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:10:44,790 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 12:10:44,801 INFO L158 Benchmark]: Toolchain (without parser) took 850.81ms. Allocated memory is still 163.6MB. Free memory was 108.2MB in the beginning and 116.3MB in the end (delta: -8.2MB). Peak memory consumption was 41.8MB. Max. memory is 16.1GB. [2022-11-20 12:10:44,803 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 123.7MB. Free memory was 89.8MB in the beginning and 89.7MB in the end (delta: 25.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 12:10:44,804 INFO L158 Benchmark]: CACSL2BoogieTranslator took 844.90ms. Allocated memory is still 163.6MB. Free memory was 108.2MB in the beginning and 116.3MB in the end (delta: -8.2MB). Peak memory consumption was 41.8MB. Max. memory is 16.1GB. [2022-11-20 12:10:44,806 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 123.7MB. Free memory was 89.8MB in the beginning and 89.7MB in the end (delta: 25.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 844.90ms. Allocated memory is still 163.6MB. Free memory was 108.2MB in the beginning and 116.3MB in the end (delta: -8.2MB). Peak memory consumption was 41.8MB. 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_f68c899c-6767-4846-b614-f642b557696f/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f68c899c-6767-4846-b614-f642b557696f/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_f68c899c-6767-4846-b614-f642b557696f/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f68c899c-6767-4846-b614-f642b557696f/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-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_f68c899c-6767-4846-b614-f642b557696f/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_f68c899c-6767-4846-b614-f642b557696f/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 234112184b071eb42f340136dfce6e1a552d788d086baea007a05a3140f2d157 --- 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 12:10:47,433 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:10:47,437 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:10:47,475 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:10:47,476 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:10:47,480 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:10:47,486 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:10:47,490 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:10:47,493 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:10:47,500 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:10:47,501 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:10:47,504 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:10:47,505 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:10:47,508 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:10:47,512 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:10:47,517 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:10:47,519 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:10:47,520 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:10:47,523 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:10:47,529 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:10:47,531 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:10:47,536 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:10:47,537 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:10:47,539 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:10:47,550 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:10:47,552 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:10:47,553 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:10:47,554 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:10:47,556 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:10:47,557 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:10:47,559 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:10:47,560 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:10:47,563 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:10:47,588 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:10:47,590 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:10:47,590 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:10:47,591 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:10:47,591 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:10:47,591 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:10:47,592 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:10:47,593 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:10:47,595 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f68c899c-6767-4846-b614-f642b557696f/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-11-20 12:10:47,624 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:10:47,625 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:10:47,625 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:10:47,625 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:10:47,626 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:10:47,626 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:10:47,627 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:10:47,628 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:10:47,628 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:10:47,628 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:10:47,629 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:10:47,629 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:10:47,629 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:10:47,630 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:10:47,630 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 12:10:47,630 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-20 12:10:47,630 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-20 12:10:47,631 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:10:47,631 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:10:47,631 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:10:47,631 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:10:47,632 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:10:47,632 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:10:47,632 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:10:47,633 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:10:47,633 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:10:47,633 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:10:47,634 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-20 12:10:47,634 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-20 12:10:47,634 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:10:47,634 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:10:47,635 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:10:47,635 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-20 12:10:47,635 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_f68c899c-6767-4846-b614-f642b557696f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f68c899c-6767-4846-b614-f642b557696f/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 234112184b071eb42f340136dfce6e1a552d788d086baea007a05a3140f2d157 [2022-11-20 12:10:48,142 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:10:48,169 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:10:48,173 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:10:48,175 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:10:48,176 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:10:48,178 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f68c899c-6767-4846-b614-f642b557696f/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--class--cdc-acm.ko-entry_point.cil.out.i [2022-11-20 12:10:51,916 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:10:52,665 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:10:52,666 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f68c899c-6767-4846-b614-f642b557696f/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--class--cdc-acm.ko-entry_point.cil.out.i [2022-11-20 12:10:52,727 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f68c899c-6767-4846-b614-f642b557696f/bin/uautomizer-ug76WZFUDN/data/d827b2cd8/61dfd24fd2c54cfdb80e5592604fcf3d/FLAGbc825b0cd [2022-11-20 12:10:52,758 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f68c899c-6767-4846-b614-f642b557696f/bin/uautomizer-ug76WZFUDN/data/d827b2cd8/61dfd24fd2c54cfdb80e5592604fcf3d [2022-11-20 12:10:52,764 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:10:52,766 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:10:52,772 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:10:52,772 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:10:52,777 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:10:52,778 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:10:52" (1/1) ... [2022-11-20 12:10:52,779 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24f25c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:52, skipping insertion in model container [2022-11-20 12:10:52,780 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:10:52" (1/1) ... [2022-11-20 12:10:52,788 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:10:53,023 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:10:55,558 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_f68c899c-6767-4846-b614-f642b557696f/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--class--cdc-acm.ko-entry_point.cil.out.i[254896,254909] [2022-11-20 12:10:55,633 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:10:55,760 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-20 12:10:55,861 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:10:56,324 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_f68c899c-6767-4846-b614-f642b557696f/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--class--cdc-acm.ko-entry_point.cil.out.i[254896,254909] [2022-11-20 12:10:56,335 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:10:56,397 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:10:56,817 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_f68c899c-6767-4846-b614-f642b557696f/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--class--cdc-acm.ko-entry_point.cil.out.i[254896,254909] [2022-11-20 12:10:56,825 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:10:57,104 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:10:57,105 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:57 WrapperNode [2022-11-20 12:10:57,106 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:10:57,107 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:10:57,107 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:10:57,108 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:10:57,117 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:57" (1/1) ... [2022-11-20 12:10:57,349 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:57" (1/1) ... [2022-11-20 12:10:57,772 INFO L138 Inliner]: procedures = 301, calls = 3934, calls flagged for inlining = 140, calls inlined = 119, statements flattened = 7924 [2022-11-20 12:10:57,773 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:10:57,775 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:10:57,775 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:10:57,776 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:10:57,790 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:57" (1/1) ... [2022-11-20 12:10:57,790 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:57" (1/1) ... [2022-11-20 12:10:57,911 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:57" (1/1) ... [2022-11-20 12:10:57,912 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:57" (1/1) ... [2022-11-20 12:10:58,159 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:57" (1/1) ... [2022-11-20 12:10:58,190 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:57" (1/1) ... [2022-11-20 12:10:58,246 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:57" (1/1) ... [2022-11-20 12:10:58,273 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:57" (1/1) ... [2022-11-20 12:10:58,338 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:10:58,340 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:10:58,341 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:10:58,341 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:10:58,343 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:57" (1/1) ... [2022-11-20 12:10:58,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:10:58,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f68c899c-6767-4846-b614-f642b557696f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:10:58,387 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f68c899c-6767-4846-b614-f642b557696f/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 12:10:58,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f68c899c-6767-4846-b614-f642b557696f/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 12:10:58,494 INFO L130 BoogieDeclarations]: Found specification of procedure acm_disconnect [2022-11-20 12:10:58,494 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_disconnect [2022-11-20 12:10:58,494 INFO L130 BoogieDeclarations]: Found specification of procedure tty_port_tty_hangup [2022-11-20 12:10:58,494 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_port_tty_hangup [2022-11-20 12:10:58,495 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-11-20 12:10:58,495 INFO L130 BoogieDeclarations]: Found specification of procedure __cmpxchg_wrong_size [2022-11-20 12:10:58,495 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2022-11-20 12:10:58,495 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2022-11-20 12:10:58,495 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-11-20 12:10:58,496 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2022-11-20 12:10:58,496 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-20 12:10:58,497 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-20 12:10:58,497 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2022-11-20 12:10:58,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-20 12:10:58,497 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-20 12:10:58,498 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-20 12:10:58,498 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-20 12:10:58,498 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-20 12:10:58,498 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_int [2022-11-20 12:10:58,499 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_int [2022-11-20 12:10:58,499 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_cleanup [2022-11-20 12:10:58,499 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_cleanup [2022-11-20 12:10:58,500 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2022-11-20 12:10:58,500 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2022-11-20 12:10:58,500 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-11-20 12:10:58,500 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-11-20 12:10:58,501 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2022-11-20 12:10:58,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2022-11-20 12:10:58,502 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-20 12:10:58,502 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-20 12:10:58,503 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_maxp [2022-11-20 12:10:58,503 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_maxp [2022-11-20 12:10:58,503 INFO L130 BoogieDeclarations]: Found specification of procedure usb_autopm_get_interface [2022-11-20 12:10:58,504 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_autopm_get_interface [2022-11-20 12:10:58,504 INFO L130 BoogieDeclarations]: Found specification of procedure acm_write_buffers_free [2022-11-20 12:10:58,504 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_write_buffers_free [2022-11-20 12:10:58,504 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-20 12:10:58,505 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-20 12:10:58,505 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2022-11-20 12:10:58,505 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2022-11-20 12:10:58,505 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-20 12:10:58,506 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-20 12:10:58,506 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_in [2022-11-20 12:10:58,506 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_in [2022-11-20 12:10:58,506 INFO L130 BoogieDeclarations]: Found specification of procedure device_create_file [2022-11-20 12:10:58,506 INFO L138 BoogieDeclarations]: Found implementation of procedure device_create_file [2022-11-20 12:10:58,507 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-20 12:10:58,507 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-20 12:10:58,507 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-20 12:10:58,507 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-20 12:10:58,508 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-20 12:10:58,508 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-20 12:10:58,508 INFO L130 BoogieDeclarations]: Found specification of procedure tty_port_put [2022-11-20 12:10:58,509 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_port_put [2022-11-20 12:10:58,510 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_chars_in_buffer [2022-11-20 12:10:58,510 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_chars_in_buffer [2022-11-20 12:10:58,510 INFO L130 BoogieDeclarations]: Found specification of procedure acm_resume [2022-11-20 12:10:58,510 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_resume [2022-11-20 12:10:58,510 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 12:10:58,511 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-20 12:10:58,511 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-20 12:10:58,511 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-20 12:10:58,512 INFO L130 BoogieDeclarations]: Found specification of procedure acm_ctrl_msg [2022-11-20 12:10:58,512 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_ctrl_msg [2022-11-20 12:10:58,512 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_coherent [2022-11-20 12:10:58,512 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_coherent [2022-11-20 12:10:58,512 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 12:10:58,512 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_hangup [2022-11-20 12:10:58,513 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_hangup [2022-11-20 12:10:58,513 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ifnum_to_if [2022-11-20 12:10:58,513 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ifnum_to_if [2022-11-20 12:10:58,514 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2022-11-20 12:10:58,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2022-11-20 12:10:58,515 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-20 12:10:58,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-20 12:10:58,515 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-20 12:10:58,516 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-20 12:10:58,516 INFO L130 BoogieDeclarations]: Found specification of procedure acm_softint [2022-11-20 12:10:58,516 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_softint [2022-11-20 12:10:58,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-11-20 12:10:58,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-11-20 12:10:58,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2022-11-20 12:10:58,518 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 12:10:58,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-20 12:10:58,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-20 12:10:58,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2022-11-20 12:10:58,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-20 12:10:58,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-11-20 12:10:58,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2022-11-20 12:10:58,519 INFO L130 BoogieDeclarations]: Found specification of procedure __might_fault [2022-11-20 12:10:58,519 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_fault [2022-11-20 12:10:58,520 INFO L130 BoogieDeclarations]: Found specification of procedure put_tty_driver [2022-11-20 12:10:58,520 INFO L138 BoogieDeclarations]: Found implementation of procedure put_tty_driver [2022-11-20 12:10:58,521 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-20 12:10:58,521 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-20 12:10:58,521 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-11-20 12:10:58,522 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-11-20 12:10:58,522 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_tiocmget [2022-11-20 12:10:58,522 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_tiocmget [2022-11-20 12:10:58,522 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2022-11-20 12:10:58,523 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2022-11-20 12:10:58,523 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_set_termios [2022-11-20 12:10:58,523 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_set_termios [2022-11-20 12:10:58,523 INFO L130 BoogieDeclarations]: Found specification of procedure usb_clear_halt [2022-11-20 12:10:58,524 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_clear_halt [2022-11-20 12:10:58,524 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_from_anchor [2022-11-20 12:10:58,524 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_from_anchor [2022-11-20 12:10:58,524 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_break_ctl [2022-11-20 12:10:58,524 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_break_ctl [2022-11-20 12:10:58,524 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-20 12:10:58,525 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-20 12:10:58,526 INFO L130 BoogieDeclarations]: Found specification of procedure usb_autopm_put_interface [2022-11-20 12:10:58,529 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_autopm_put_interface [2022-11-20 12:10:58,530 INFO L130 BoogieDeclarations]: Found specification of procedure acm_start_wb [2022-11-20 12:10:58,530 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_start_wb [2022-11-20 12:10:58,530 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_bulk [2022-11-20 12:10:58,530 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_bulk [2022-11-20 12:10:58,532 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-20 12:10:58,533 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-20 12:10:58,533 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-11-20 12:10:58,534 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-11-20 12:10:58,540 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_throttle [2022-11-20 12:10:58,540 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_throttle [2022-11-20 12:10:58,540 INFO L130 BoogieDeclarations]: Found specification of procedure acm_wb_is_avail [2022-11-20 12:10:58,540 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_wb_is_avail [2022-11-20 12:10:58,541 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-20 12:10:58,541 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-20 12:10:58,541 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2022-11-20 12:10:58,541 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2022-11-20 12:10:58,541 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-11-20 12:10:58,541 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-11-20 12:10:58,542 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_write_room [2022-11-20 12:10:58,542 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_write_room [2022-11-20 12:10:58,542 INFO L130 BoogieDeclarations]: Found specification of procedure acm_submit_read_urb [2022-11-20 12:10:58,542 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_submit_read_urb [2022-11-20 12:10:58,542 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_int_urb [2022-11-20 12:10:58,542 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_int_urb [2022-11-20 12:10:58,543 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-20 12:10:58,543 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-20 12:10:58,543 INFO L130 BoogieDeclarations]: Found specification of procedure acm_set_control [2022-11-20 12:10:58,543 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_set_control [2022-11-20 12:10:58,543 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2022-11-20 12:10:58,543 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2022-11-20 12:10:58,544 INFO L130 BoogieDeclarations]: Found specification of procedure acm_write_done [2022-11-20 12:10:58,544 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_write_done [2022-11-20 12:10:58,544 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_ioctl [2022-11-20 12:10:58,544 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_ioctl [2022-11-20 12:10:58,544 INFO L130 BoogieDeclarations]: Found specification of procedure acm_release_minor [2022-11-20 12:10:58,544 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_release_minor [2022-11-20 12:10:58,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2022-11-20 12:10:58,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2022-11-20 12:10:58,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-11-20 12:10:58,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2022-11-20 12:10:58,545 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2022-11-20 12:10:58,545 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2022-11-20 12:10:58,546 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-20 12:10:58,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-20 12:10:58,546 INFO L130 BoogieDeclarations]: Found specification of procedure __read_once_size [2022-11-20 12:10:58,546 INFO L138 BoogieDeclarations]: Found implementation of procedure __read_once_size [2022-11-20 12:10:58,546 INFO L130 BoogieDeclarations]: Found specification of procedure usb_autopm_put_interface_async [2022-11-20 12:10:58,546 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_autopm_put_interface_async [2022-11-20 12:10:58,547 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_unthrottle [2022-11-20 12:10:58,547 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_unthrottle [2022-11-20 12:10:58,547 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-20 12:10:58,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-20 12:10:58,548 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 12:10:58,548 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-20 12:10:58,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-20 12:10:58,548 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 12:10:58,548 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 12:10:58,549 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-20 12:10:58,549 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2022-11-20 12:10:58,549 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2022-11-20 12:10:58,549 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2022-11-20 12:10:58,549 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2022-11-20 12:10:58,549 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2022-11-20 12:10:58,550 INFO L130 BoogieDeclarations]: Found specification of procedure acm_port_dtr_rts [2022-11-20 12:10:58,550 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_port_dtr_rts [2022-11-20 12:10:58,550 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-11-20 12:10:58,550 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-11-20 12:10:58,551 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2022-11-20 12:10:58,551 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2022-11-20 12:10:58,551 INFO L130 BoogieDeclarations]: Found specification of procedure acm_read_buffers_free [2022-11-20 12:10:58,552 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_read_buffers_free [2022-11-20 12:10:58,552 INFO L130 BoogieDeclarations]: Found specification of procedure acm_submit_read_urbs [2022-11-20 12:10:58,552 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_submit_read_urbs [2022-11-20 12:10:58,552 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_install [2022-11-20 12:10:58,552 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_install [2022-11-20 12:10:58,552 INFO L130 BoogieDeclarations]: Found specification of procedure stop_data_traffic [2022-11-20 12:10:58,553 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_data_traffic [2022-11-20 12:10:58,553 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2022-11-20 12:10:58,553 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2022-11-20 12:10:58,553 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-20 12:10:58,553 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-20 12:10:58,554 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2022-11-20 12:10:58,554 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2022-11-20 12:10:58,554 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2022-11-20 12:10:58,554 INFO L130 BoogieDeclarations]: Found specification of procedure device_remove_file [2022-11-20 12:10:58,554 INFO L138 BoogieDeclarations]: Found implementation of procedure device_remove_file [2022-11-20 12:10:58,554 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_tiocmset [2022-11-20 12:10:58,555 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_tiocmset [2022-11-20 12:10:58,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:10:58,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:10:58,555 INFO L130 BoogieDeclarations]: Found specification of procedure tty_unregister_driver [2022-11-20 12:10:58,555 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_unregister_driver [2022-11-20 12:10:58,555 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-20 12:10:58,556 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-20 12:10:59,572 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:10:59,577 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:11:00,366 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-20 12:12:03,462 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:12:03,495 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:12:03,497 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-20 12:12:03,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:12:03 BoogieIcfgContainer [2022-11-20 12:12:03,503 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:12:03,506 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 12:12:03,506 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 12:12:03,509 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 12:12:03,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:10:52" (1/3) ... [2022-11-20 12:12:03,510 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7decede6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:12:03, skipping insertion in model container [2022-11-20 12:12:03,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:57" (2/3) ... [2022-11-20 12:12:03,512 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7decede6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:12:03, skipping insertion in model container [2022-11-20 12:12:03,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:12:03" (3/3) ... [2022-11-20 12:12:03,513 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--usb--class--cdc-acm.ko-entry_point.cil.out.i [2022-11-20 12:12:03,535 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 12:12:03,535 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 12:12:03,652 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:12:03,660 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;@50a83ee1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:12:03,661 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 12:12:03,673 INFO L276 IsEmpty]: Start isEmpty. Operand has 1491 states, 1061 states have (on average 1.3374175306314797) internal successors, (1419), 1077 states have internal predecessors, (1419), 343 states have call successors, (343), 86 states have call predecessors, (343), 85 states have return successors, (334), 334 states have call predecessors, (334), 334 states have call successors, (334) [2022-11-20 12:12:03,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2022-11-20 12:12:03,716 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:12:03,717 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:12:03,718 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:12:03,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:12:03,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1745738484, now seen corresponding path program 1 times [2022-11-20 12:12:03,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:12:03,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1963815121] [2022-11-20 12:12:03,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:12:03,762 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 12:12:03,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f68c899c-6767-4846-b614-f642b557696f/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:12:03,769 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f68c899c-6767-4846-b614-f642b557696f/bin/uautomizer-ug76WZFUDN/mathsat -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 12:12:03,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f68c899c-6767-4846-b614-f642b557696f/bin/uautomizer-ug76WZFUDN/mathsat -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 12:12:10,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:12:10,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 6528 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 12:12:10,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:12:11,507 INFO L134 CoverageAnalysis]: Checked inductivity of 1526 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 1463 trivial. 0 not checked. [2022-11-20 12:12:11,507 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:12:11,508 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:12:11,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1963815121] [2022-11-20 12:12:11,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1963815121] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:12:11,509 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:12:11,510 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 12:12:11,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180937141] [2022-11-20 12:12:11,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:12:11,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:12:11,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:12:11,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:12:11,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:12:11,585 INFO L87 Difference]: Start difference. First operand has 1491 states, 1061 states have (on average 1.3374175306314797) internal successors, (1419), 1077 states have internal predecessors, (1419), 343 states have call successors, (343), 86 states have call predecessors, (343), 85 states have return successors, (334), 334 states have call predecessors, (334), 334 states have call successors, (334) Second operand has 6 states, 5 states have (on average 15.2) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2022-11-20 12:12:13,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:12:13,197 INFO L93 Difference]: Finished difference Result 2983 states and 4276 transitions. [2022-11-20 12:12:13,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:12:13,201 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 15.2) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) Word has length 352 [2022-11-20 12:12:13,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:12:13,238 INFO L225 Difference]: With dead ends: 2983 [2022-11-20 12:12:13,238 INFO L226 Difference]: Without dead ends: 1469 [2022-11-20 12:12:13,256 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 347 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:12:13,270 INFO L413 NwaCegarLoop]: 2081 mSDtfsCounter, 6 mSDsluCounter, 8296 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 10377 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:12:13,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 10377 Invalid, 88 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-20 12:12:13,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1469 states. [2022-11-20 12:12:13,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1469 to 1469. [2022-11-20 12:12:13,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1469 states, 1052 states have (on average 1.3279467680608366) internal successors, (1397), 1057 states have internal predecessors, (1397), 332 states have call successors, (332), 85 states have call predecessors, (332), 84 states have return successors, (331), 331 states have call predecessors, (331), 331 states have call successors, (331) [2022-11-20 12:12:13,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1469 states to 1469 states and 2060 transitions. [2022-11-20 12:12:13,512 INFO L78 Accepts]: Start accepts. Automaton has 1469 states and 2060 transitions. Word has length 352 [2022-11-20 12:12:13,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:12:13,520 INFO L495 AbstractCegarLoop]: Abstraction has 1469 states and 2060 transitions. [2022-11-20 12:12:13,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 15.2) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2022-11-20 12:12:13,521 INFO L276 IsEmpty]: Start isEmpty. Operand 1469 states and 2060 transitions. [2022-11-20 12:12:13,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2022-11-20 12:12:13,554 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:12:13,555 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:12:13,619 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f68c899c-6767-4846-b614-f642b557696f/bin/uautomizer-ug76WZFUDN/mathsat -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)] Ended with exit code 0 [2022-11-20 12:12:13,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f68c899c-6767-4846-b614-f642b557696f/bin/uautomizer-ug76WZFUDN/mathsat -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 12:12:13,756 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:12:13,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:12:13,757 INFO L85 PathProgramCache]: Analyzing trace with hash -748917916, now seen corresponding path program 1 times [2022-11-20 12:12:13,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:12:13,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [447243894] [2022-11-20 12:12:13,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:12:13,764 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 12:12:13,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f68c899c-6767-4846-b614-f642b557696f/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:12:13,766 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f68c899c-6767-4846-b614-f642b557696f/bin/uautomizer-ug76WZFUDN/mathsat -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 12:12:13,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f68c899c-6767-4846-b614-f642b557696f/bin/uautomizer-ug76WZFUDN/mathsat -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 12:12:20,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:12:21,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 6616 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 12:12:21,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:12:21,813 INFO L134 CoverageAnalysis]: Checked inductivity of 1618 backedges. 84 proven. 1 refuted. 0 times theorem prover too weak. 1533 trivial. 0 not checked. [2022-11-20 12:12:21,813 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:12:24,129 INFO L134 CoverageAnalysis]: Checked inductivity of 1618 backedges. 0 proven. 71 refuted. 0 times theorem prover too weak. 1547 trivial. 0 not checked. [2022-11-20 12:12:24,130 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:12:24,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [447243894] [2022-11-20 12:12:24,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [447243894] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:12:24,133 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:12:24,134 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2022-11-20 12:12:24,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409141565] [2022-11-20 12:12:24,134 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:12:24,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 12:12:24,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:12:24,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 12:12:24,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-11-20 12:12:24,140 INFO L87 Difference]: Start difference. First operand 1469 states and 2060 transitions. Second operand has 11 states, 9 states have (on average 10.555555555555555) internal successors, (95), 11 states have internal predecessors, (95), 4 states have call successors, (42), 2 states have call predecessors, (42), 5 states have return successors, (40), 4 states have call predecessors, (40), 4 states have call successors, (40) [2022-11-20 12:12:26,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:12:26,955 INFO L93 Difference]: Finished difference Result 2917 states and 4098 transitions. [2022-11-20 12:12:26,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 12:12:26,957 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 10.555555555555555) internal successors, (95), 11 states have internal predecessors, (95), 4 states have call successors, (42), 2 states have call predecessors, (42), 5 states have return successors, (40), 4 states have call predecessors, (40), 4 states have call successors, (40) Word has length 360 [2022-11-20 12:12:26,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:12:26,967 INFO L225 Difference]: With dead ends: 2917 [2022-11-20 12:12:26,967 INFO L226 Difference]: Without dead ends: 1475 [2022-11-20 12:12:26,973 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 721 GetRequests, 709 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-11-20 12:12:26,974 INFO L413 NwaCegarLoop]: 2049 mSDtfsCounter, 8 mSDsluCounter, 16334 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 18383 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:12:26,974 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 18383 Invalid, 184 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [16 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-20 12:12:26,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1475 states. [2022-11-20 12:12:27,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1475 to 1475. [2022-11-20 12:12:27,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1475 states, 1056 states have (on average 1.3267045454545454) internal successors, (1401), 1061 states have internal predecessors, (1401), 333 states have call successors, (333), 86 states have call predecessors, (333), 85 states have return successors, (332), 332 states have call predecessors, (332), 332 states have call successors, (332) [2022-11-20 12:12:27,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1475 states to 1475 states and 2066 transitions. [2022-11-20 12:12:27,062 INFO L78 Accepts]: Start accepts. Automaton has 1475 states and 2066 transitions. Word has length 360 [2022-11-20 12:12:27,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:12:27,064 INFO L495 AbstractCegarLoop]: Abstraction has 1475 states and 2066 transitions. [2022-11-20 12:12:27,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 10.555555555555555) internal successors, (95), 11 states have internal predecessors, (95), 4 states have call successors, (42), 2 states have call predecessors, (42), 5 states have return successors, (40), 4 states have call predecessors, (40), 4 states have call successors, (40) [2022-11-20 12:12:27,065 INFO L276 IsEmpty]: Start isEmpty. Operand 1475 states and 2066 transitions. [2022-11-20 12:12:27,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2022-11-20 12:12:27,079 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:12:27,082 INFO L195 NwaCegarLoop]: trace histogram [16, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:12:27,185 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f68c899c-6767-4846-b614-f642b557696f/bin/uautomizer-ug76WZFUDN/mathsat -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 12:12:27,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f68c899c-6767-4846-b614-f642b557696f/bin/uautomizer-ug76WZFUDN/mathsat -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 12:12:27,307 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:12:27,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:12:27,308 INFO L85 PathProgramCache]: Analyzing trace with hash 912271092, now seen corresponding path program 2 times [2022-11-20 12:12:27,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:12:27,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [181151859] [2022-11-20 12:12:27,329 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:12:27,329 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 12:12:27,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f68c899c-6767-4846-b614-f642b557696f/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:12:27,334 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f68c899c-6767-4846-b614-f642b557696f/bin/uautomizer-ug76WZFUDN/mathsat -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 12:12:27,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f68c899c-6767-4846-b614-f642b557696f/bin/uautomizer-ug76WZFUDN/mathsat -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 12:12:32,756 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 12:12:32,756 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:12:33,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 5651 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:12:33,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:12:33,199 INFO L134 CoverageAnalysis]: Checked inductivity of 1774 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1774 trivial. 0 not checked. [2022-11-20 12:12:33,200 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:12:33,200 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:12:33,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [181151859] [2022-11-20 12:12:33,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [181151859] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:12:33,200 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:12:33,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:12:33,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033280327] [2022-11-20 12:12:33,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:12:33,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:12:33,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:12:33,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:12:33,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:12:33,203 INFO L87 Difference]: Start difference. First operand 1475 states and 2066 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-11-20 12:12:35,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:12:35,115 INFO L93 Difference]: Finished difference Result 3722 states and 5201 transitions. [2022-11-20 12:12:35,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:12:35,116 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 368 [2022-11-20 12:12:35,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:12:35,132 INFO L225 Difference]: With dead ends: 3722 [2022-11-20 12:12:35,132 INFO L226 Difference]: Without dead ends: 2305 [2022-11-20 12:12:35,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 366 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 12:12:35,139 INFO L413 NwaCegarLoop]: 2294 mSDtfsCounter, 1214 mSDsluCounter, 1963 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1214 SdHoareTripleChecker+Valid, 4257 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-20 12:12:35,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1214 Valid, 4257 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-20 12:12:35,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2305 states. [2022-11-20 12:12:35,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2305 to 2301. [2022-11-20 12:12:35,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2301 states, 1669 states have (on average 1.336129418813661) internal successors, (2230), 1676 states have internal predecessors, (2230), 491 states have call successors, (491), 141 states have call predecessors, (491), 140 states have return successors, (490), 490 states have call predecessors, (490), 490 states have call successors, (490) [2022-11-20 12:12:35,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2301 states to 2301 states and 3211 transitions. [2022-11-20 12:12:35,261 INFO L78 Accepts]: Start accepts. Automaton has 2301 states and 3211 transitions. Word has length 368 [2022-11-20 12:12:35,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:12:35,263 INFO L495 AbstractCegarLoop]: Abstraction has 2301 states and 3211 transitions. [2022-11-20 12:12:35,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-11-20 12:12:35,263 INFO L276 IsEmpty]: Start isEmpty. Operand 2301 states and 3211 transitions. [2022-11-20 12:12:35,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2022-11-20 12:12:35,273 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:12:35,273 INFO L195 NwaCegarLoop]: trace histogram [16, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:12:35,358 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f68c899c-6767-4846-b614-f642b557696f/bin/uautomizer-ug76WZFUDN/mathsat -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 12:12:35,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f68c899c-6767-4846-b614-f642b557696f/bin/uautomizer-ug76WZFUDN/mathsat -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 12:12:35,498 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:12:35,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:12:35,499 INFO L85 PathProgramCache]: Analyzing trace with hash -1718543465, now seen corresponding path program 1 times [2022-11-20 12:12:35,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:12:35,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1191280979] [2022-11-20 12:12:35,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:12:35,509 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 12:12:35,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f68c899c-6767-4846-b614-f642b557696f/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:12:35,510 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f68c899c-6767-4846-b614-f642b557696f/bin/uautomizer-ug76WZFUDN/mathsat -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 12:12:35,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f68c899c-6767-4846-b614-f642b557696f/bin/uautomizer-ug76WZFUDN/mathsat -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 12:12:42,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:12:42,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 6501 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 12:12:42,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:12:43,364 INFO L134 CoverageAnalysis]: Checked inductivity of 1774 backedges. 119 proven. 3 refuted. 0 times theorem prover too weak. 1652 trivial. 0 not checked. [2022-11-20 12:12:43,364 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:12:46,237 INFO L134 CoverageAnalysis]: Checked inductivity of 1774 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 1666 trivial. 0 not checked. [2022-11-20 12:12:46,238 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:12:46,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1191280979] [2022-11-20 12:12:46,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1191280979] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:12:46,238 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:12:46,239 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2022-11-20 12:12:46,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373478117] [2022-11-20 12:12:46,239 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:12:46,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 12:12:46,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:12:46,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 12:12:46,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2022-11-20 12:12:46,242 INFO L87 Difference]: Start difference. First operand 2301 states and 3211 transitions. Second operand has 13 states, 11 states have (on average 9.090909090909092) internal successors, (100), 13 states have internal predecessors, (100), 4 states have call successors, (45), 2 states have call predecessors, (45), 5 states have return successors, (44), 4 states have call predecessors, (44), 4 states have call successors, (44) [2022-11-20 12:12:49,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:12:49,702 INFO L93 Difference]: Finished difference Result 4582 states and 6404 transitions. [2022-11-20 12:12:49,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 12:12:49,703 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 9.090909090909092) internal successors, (100), 13 states have internal predecessors, (100), 4 states have call successors, (45), 2 states have call predecessors, (45), 5 states have return successors, (44), 4 states have call predecessors, (44), 4 states have call successors, (44) Word has length 370 [2022-11-20 12:12:49,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:12:49,725 INFO L225 Difference]: With dead ends: 4582 [2022-11-20 12:12:49,726 INFO L226 Difference]: Without dead ends: 2303 [2022-11-20 12:12:49,735 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 741 GetRequests, 727 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2022-11-20 12:12:49,738 INFO L413 NwaCegarLoop]: 2049 mSDtfsCounter, 9 mSDsluCounter, 18371 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 20420 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-20 12:12:49,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 20420 Invalid, 223 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [18 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-20 12:12:49,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2303 states. [2022-11-20 12:12:49,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2303 to 2303. [2022-11-20 12:12:49,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2303 states, 1671 states have (on average 1.3357271095152603) internal successors, (2232), 1678 states have internal predecessors, (2232), 491 states have call successors, (491), 141 states have call predecessors, (491), 140 states have return successors, (490), 490 states have call predecessors, (490), 490 states have call successors, (490) [2022-11-20 12:12:49,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2303 states to 2303 states and 3213 transitions. [2022-11-20 12:12:49,878 INFO L78 Accepts]: Start accepts. Automaton has 2303 states and 3213 transitions. Word has length 370 [2022-11-20 12:12:49,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:12:49,879 INFO L495 AbstractCegarLoop]: Abstraction has 2303 states and 3213 transitions. [2022-11-20 12:12:49,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 9.090909090909092) internal successors, (100), 13 states have internal predecessors, (100), 4 states have call successors, (45), 2 states have call predecessors, (45), 5 states have return successors, (44), 4 states have call predecessors, (44), 4 states have call successors, (44) [2022-11-20 12:12:49,880 INFO L276 IsEmpty]: Start isEmpty. Operand 2303 states and 3213 transitions. [2022-11-20 12:12:49,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2022-11-20 12:12:49,891 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:12:49,892 INFO L195 NwaCegarLoop]: trace histogram [24, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:12:49,985 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f68c899c-6767-4846-b614-f642b557696f/bin/uautomizer-ug76WZFUDN/mathsat -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 12:12:50,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f68c899c-6767-4846-b614-f642b557696f/bin/uautomizer-ug76WZFUDN/mathsat -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 12:12:50,115 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:12:50,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:12:50,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1305539591, now seen corresponding path program 2 times [2022-11-20 12:12:50,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:12:50,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1653166799] [2022-11-20 12:12:50,121 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:12:50,122 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 12:12:50,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f68c899c-6767-4846-b614-f642b557696f/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:12:50,123 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f68c899c-6767-4846-b614-f642b557696f/bin/uautomizer-ug76WZFUDN/mathsat -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 12:12:50,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f68c899c-6767-4846-b614-f642b557696f/bin/uautomizer-ug76WZFUDN/mathsat -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 12:12:55,062 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 12:12:55,063 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:12:55,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 5448 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:12:55,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:12:55,546 INFO L134 CoverageAnalysis]: Checked inductivity of 1994 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1994 trivial. 0 not checked. [2022-11-20 12:12:55,546 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:12:55,547 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:12:55,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1653166799] [2022-11-20 12:12:55,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1653166799] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:12:55,547 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:12:55,547 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:12:55,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865202766] [2022-11-20 12:12:55,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:12:55,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:12:55,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:12:55,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:12:55,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:12:55,550 INFO L87 Difference]: Start difference. First operand 2303 states and 3213 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-20 12:12:57,467 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 12:12:58,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:12:58,999 INFO L93 Difference]: Finished difference Result 6537 states and 9100 transitions. [2022-11-20 12:12:58,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:12:59,000 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 378 [2022-11-20 12:12:59,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:12:59,036 INFO L225 Difference]: With dead ends: 6537 [2022-11-20 12:12:59,036 INFO L226 Difference]: Without dead ends: 4292 [2022-11-20 12:12:59,046 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 376 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 12:12:59,047 INFO L413 NwaCegarLoop]: 2341 mSDtfsCounter, 1867 mSDsluCounter, 1963 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1867 SdHoareTripleChecker+Valid, 4304 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:12:59,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1867 Valid, 4304 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-11-20 12:12:59,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4292 states. [2022-11-20 12:12:59,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4292 to 4285. [2022-11-20 12:12:59,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4285 states, 3124 states have (on average 1.3393085787451984) internal successors, (4184), 3140 states have internal predecessors, (4184), 888 states have call successors, (888), 273 states have call predecessors, (888), 272 states have return successors, (887), 885 states have call predecessors, (887), 887 states have call successors, (887) [2022-11-20 12:12:59,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4285 states to 4285 states and 5959 transitions. [2022-11-20 12:12:59,287 INFO L78 Accepts]: Start accepts. Automaton has 4285 states and 5959 transitions. Word has length 378 [2022-11-20 12:12:59,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:12:59,289 INFO L495 AbstractCegarLoop]: Abstraction has 4285 states and 5959 transitions. [2022-11-20 12:12:59,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-20 12:12:59,289 INFO L276 IsEmpty]: Start isEmpty. Operand 4285 states and 5959 transitions. [2022-11-20 12:12:59,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2022-11-20 12:12:59,300 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:12:59,300 INFO L195 NwaCegarLoop]: trace histogram [24, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:12:59,384 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f68c899c-6767-4846-b614-f642b557696f/bin/uautomizer-ug76WZFUDN/mathsat -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)] Ended with exit code 0 [2022-11-20 12:12:59,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f68c899c-6767-4846-b614-f642b557696f/bin/uautomizer-ug76WZFUDN/mathsat -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 12:12:59,523 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:12:59,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:12:59,524 INFO L85 PathProgramCache]: Analyzing trace with hash -172435051, now seen corresponding path program 1 times [2022-11-20 12:12:59,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:12:59,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1247548713] [2022-11-20 12:12:59,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:12:59,529 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 12:12:59,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f68c899c-6767-4846-b614-f642b557696f/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:12:59,530 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f68c899c-6767-4846-b614-f642b557696f/bin/uautomizer-ug76WZFUDN/mathsat -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 12:12:59,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f68c899c-6767-4846-b614-f642b557696f/bin/uautomizer-ug76WZFUDN/mathsat -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 12:13:07,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:13:07,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 7111 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 12:13:07,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:13:08,952 INFO L134 CoverageAnalysis]: Checked inductivity of 1994 backedges. 168 proven. 6 refuted. 0 times theorem prover too weak. 1820 trivial. 0 not checked. [2022-11-20 12:13:08,952 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:13:12,960 INFO L134 CoverageAnalysis]: Checked inductivity of 1994 backedges. 0 proven. 160 refuted. 0 times theorem prover too weak. 1834 trivial. 0 not checked. [2022-11-20 12:13:12,960 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:13:12,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1247548713] [2022-11-20 12:13:12,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1247548713] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:13:12,961 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:13:12,961 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2022-11-20 12:13:12,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196102733] [2022-11-20 12:13:12,961 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:13:12,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 12:13:12,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:13:12,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 12:13:12,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2022-11-20 12:13:12,963 INFO L87 Difference]: Start difference. First operand 4285 states and 5959 transitions. Second operand has 15 states, 13 states have (on average 7.923076923076923) internal successors, (103), 15 states have internal predecessors, (103), 4 states have call successors, (42), 2 states have call predecessors, (42), 5 states have return successors, (40), 4 states have call predecessors, (40), 4 states have call successors, (40) [2022-11-20 12:13:15,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:13:15,996 INFO L93 Difference]: Finished difference Result 8556 states and 11915 transitions. [2022-11-20 12:13:15,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 12:13:15,998 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 7.923076923076923) internal successors, (103), 15 states have internal predecessors, (103), 4 states have call successors, (42), 2 states have call predecessors, (42), 5 states have return successors, (40), 4 states have call predecessors, (40), 4 states have call successors, (40) Word has length 378 [2022-11-20 12:13:15,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:13:16,028 INFO L225 Difference]: With dead ends: 8556 [2022-11-20 12:13:16,029 INFO L226 Difference]: Without dead ends: 4289 [2022-11-20 12:13:16,045 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 757 GetRequests, 741 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2022-11-20 12:13:16,046 INFO L413 NwaCegarLoop]: 2049 mSDtfsCounter, 16 mSDsluCounter, 12254 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 14303 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:13:16,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 14303 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-20 12:13:16,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4289 states. [2022-11-20 12:13:16,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4289 to 4289. [2022-11-20 12:13:16,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4289 states, 3128 states have (on average 1.3388746803069054) internal successors, (4188), 3144 states have internal predecessors, (4188), 888 states have call successors, (888), 273 states have call predecessors, (888), 272 states have return successors, (887), 885 states have call predecessors, (887), 887 states have call successors, (887) [2022-11-20 12:13:16,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4289 states to 4289 states and 5963 transitions. [2022-11-20 12:13:16,292 INFO L78 Accepts]: Start accepts. Automaton has 4289 states and 5963 transitions. Word has length 378 [2022-11-20 12:13:16,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:13:16,293 INFO L495 AbstractCegarLoop]: Abstraction has 4289 states and 5963 transitions. [2022-11-20 12:13:16,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 7.923076923076923) internal successors, (103), 15 states have internal predecessors, (103), 4 states have call successors, (42), 2 states have call predecessors, (42), 5 states have return successors, (40), 4 states have call predecessors, (40), 4 states have call successors, (40) [2022-11-20 12:13:16,293 INFO L276 IsEmpty]: Start isEmpty. Operand 4289 states and 5963 transitions. [2022-11-20 12:13:16,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2022-11-20 12:13:16,298 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:13:16,299 INFO L195 NwaCegarLoop]: trace histogram [32, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:13:16,417 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f68c899c-6767-4846-b614-f642b557696f/bin/uautomizer-ug76WZFUDN/mathsat -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 12:13:16,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f68c899c-6767-4846-b614-f642b557696f/bin/uautomizer-ug76WZFUDN/mathsat -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 12:13:16,522 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:13:16,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:13:16,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1533267237, now seen corresponding path program 2 times [2022-11-20 12:13:16,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:13:16,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1418890861] [2022-11-20 12:13:16,532 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:13:16,533 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 12:13:16,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f68c899c-6767-4846-b614-f642b557696f/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:13:16,534 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f68c899c-6767-4846-b614-f642b557696f/bin/uautomizer-ug76WZFUDN/mathsat -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 12:13:16,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f68c899c-6767-4846-b614-f642b557696f/bin/uautomizer-ug76WZFUDN/mathsat -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 12:13:23,130 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 12:13:23,131 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:13:23,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 5970 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:13:23,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:13:23,626 INFO L134 CoverageAnalysis]: Checked inductivity of 2278 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2278 trivial. 0 not checked. [2022-11-20 12:13:23,626 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:13:23,626 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:13:23,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1418890861] [2022-11-20 12:13:23,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1418890861] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:13:23,627 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:13:23,627 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:13:23,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565723039] [2022-11-20 12:13:23,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:13:23,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:13:23,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:13:23,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:13:23,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:13:23,629 INFO L87 Difference]: Start difference. First operand 4289 states and 5963 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-11-20 12:13:26,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:13:26,511 INFO L93 Difference]: Finished difference Result 10873 states and 15041 transitions. [2022-11-20 12:13:26,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:13:26,512 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 386 [2022-11-20 12:13:26,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:13:26,562 INFO L225 Difference]: With dead ends: 10873 [2022-11-20 12:13:26,562 INFO L226 Difference]: Without dead ends: 6642 [2022-11-20 12:13:26,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 385 GetRequests, 384 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 12:13:26,584 INFO L413 NwaCegarLoop]: 2499 mSDtfsCounter, 1437 mSDsluCounter, 1900 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1437 SdHoareTripleChecker+Valid, 4399 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-20 12:13:26,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1437 Valid, 4399 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-20 12:13:26,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6642 states. [2022-11-20 12:13:26,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6642 to 6639. [2022-11-20 12:13:26,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6639 states, 4832 states have (on average 1.3288493377483444) internal successors, (6421), 4856 states have internal predecessors, (6421), 1366 states have call successors, (1366), 441 states have call predecessors, (1366), 440 states have return successors, (1365), 1363 states have call predecessors, (1365), 1365 states have call successors, (1365) [2022-11-20 12:13:26,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6639 states to 6639 states and 9152 transitions. [2022-11-20 12:13:26,977 INFO L78 Accepts]: Start accepts. Automaton has 6639 states and 9152 transitions. Word has length 386 [2022-11-20 12:13:26,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:13:26,978 INFO L495 AbstractCegarLoop]: Abstraction has 6639 states and 9152 transitions. [2022-11-20 12:13:26,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-11-20 12:13:26,980 INFO L276 IsEmpty]: Start isEmpty. Operand 6639 states and 9152 transitions. [2022-11-20 12:13:26,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2022-11-20 12:13:26,987 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:13:26,987 INFO L195 NwaCegarLoop]: trace histogram [32, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 8, 8, 8, 8, 8, 8, 8, 8, 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 12:13:27,087 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f68c899c-6767-4846-b614-f642b557696f/bin/uautomizer-ug76WZFUDN/mathsat -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 12:13:27,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f68c899c-6767-4846-b614-f642b557696f/bin/uautomizer-ug76WZFUDN/mathsat -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 12:13:27,204 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:13:27,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:13:27,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1475912341, now seen corresponding path program 1 times [2022-11-20 12:13:27,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:13:27,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1126969450] [2022-11-20 12:13:27,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:13:27,214 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 12:13:27,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f68c899c-6767-4846-b614-f642b557696f/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:13:27,216 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f68c899c-6767-4846-b614-f642b557696f/bin/uautomizer-ug76WZFUDN/mathsat -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 12:13:27,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f68c899c-6767-4846-b614-f642b557696f/bin/uautomizer-ug76WZFUDN/mathsat -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 12:13:38,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:13:38,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 8321 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 12:13:38,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:13:40,054 INFO L134 CoverageAnalysis]: Checked inductivity of 2477 backedges. 623 proven. 10 refuted. 0 times theorem prover too weak. 1844 trivial. 0 not checked. [2022-11-20 12:13:40,055 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:13:45,031 INFO L134 CoverageAnalysis]: Checked inductivity of 2477 backedges. 31 proven. 196 refuted. 0 times theorem prover too weak. 2250 trivial. 0 not checked. [2022-11-20 12:13:45,032 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:13:45,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1126969450] [2022-11-20 12:13:45,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1126969450] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:13:45,032 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:13:45,033 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2022-11-20 12:13:45,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35565208] [2022-11-20 12:13:45,033 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:13:45,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-20 12:13:45,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:13:45,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-20 12:13:45,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2022-11-20 12:13:45,036 INFO L87 Difference]: Start difference. First operand 6639 states and 9152 transitions. Second operand has 17 states, 15 states have (on average 10.2) internal successors, (153), 17 states have internal predecessors, (153), 4 states have call successors, (51), 2 states have call predecessors, (51), 5 states have return successors, (49), 4 states have call predecessors, (49), 4 states have call successors, (49) [2022-11-20 12:13:49,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:13:49,393 INFO L93 Difference]: Finished difference Result 13266 states and 18307 transitions. [2022-11-20 12:13:49,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 12:13:49,394 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 10.2) internal successors, (153), 17 states have internal predecessors, (153), 4 states have call successors, (51), 2 states have call predecessors, (51), 5 states have return successors, (49), 4 states have call predecessors, (49), 4 states have call successors, (49) Word has length 442 [2022-11-20 12:13:49,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:13:49,468 INFO L225 Difference]: With dead ends: 13266 [2022-11-20 12:13:49,468 INFO L226 Difference]: Without dead ends: 6654 [2022-11-20 12:13:49,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 888 GetRequests, 867 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2022-11-20 12:13:49,499 INFO L413 NwaCegarLoop]: 2048 mSDtfsCounter, 27 mSDsluCounter, 16330 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 18378 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-20 12:13:49,500 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 18378 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-20 12:13:49,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6654 states. [2022-11-20 12:13:49,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6654 to 6654. [2022-11-20 12:13:49,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6654 states, 4846 states have (on average 1.3281056541477507) internal successors, (6436), 4870 states have internal predecessors, (6436), 1366 states have call successors, (1366), 442 states have call predecessors, (1366), 441 states have return successors, (1365), 1363 states have call predecessors, (1365), 1365 states have call successors, (1365) [2022-11-20 12:13:49,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6654 states to 6654 states and 9167 transitions. [2022-11-20 12:13:49,898 INFO L78 Accepts]: Start accepts. Automaton has 6654 states and 9167 transitions. Word has length 442 [2022-11-20 12:13:49,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:13:49,899 INFO L495 AbstractCegarLoop]: Abstraction has 6654 states and 9167 transitions. [2022-11-20 12:13:49,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 10.2) internal successors, (153), 17 states have internal predecessors, (153), 4 states have call successors, (51), 2 states have call predecessors, (51), 5 states have return successors, (49), 4 states have call predecessors, (49), 4 states have call successors, (49) [2022-11-20 12:13:49,899 INFO L276 IsEmpty]: Start isEmpty. Operand 6654 states and 9167 transitions. [2022-11-20 12:13:49,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2022-11-20 12:13:49,907 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:13:49,907 INFO L195 NwaCegarLoop]: trace histogram [33, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 8, 8, 8, 8, 8, 8, 8, 8, 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 12:13:50,036 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f68c899c-6767-4846-b614-f642b557696f/bin/uautomizer-ug76WZFUDN/mathsat -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 12:13:50,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f68c899c-6767-4846-b614-f642b557696f/bin/uautomizer-ug76WZFUDN/mathsat -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 12:13:50,124 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:13:50,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:13:50,125 INFO L85 PathProgramCache]: Analyzing trace with hash 2091698623, now seen corresponding path program 2 times [2022-11-20 12:13:50,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:13:50,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1124583381] [2022-11-20 12:13:50,135 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:13:50,136 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 12:13:50,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f68c899c-6767-4846-b614-f642b557696f/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:13:50,137 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f68c899c-6767-4846-b614-f642b557696f/bin/uautomizer-ug76WZFUDN/mathsat -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 12:13:50,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f68c899c-6767-4846-b614-f642b557696f/bin/uautomizer-ug76WZFUDN/mathsat -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 12:13:56,380 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 12:13:56,380 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:13:56,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 5607 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 12:13:56,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:13:56,853 INFO L134 CoverageAnalysis]: Checked inductivity of 2517 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2514 trivial. 0 not checked. [2022-11-20 12:13:56,853 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:13:56,853 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:13:56,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1124583381] [2022-11-20 12:13:56,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1124583381] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:13:56,854 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:13:56,854 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:13:56,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39502295] [2022-11-20 12:13:56,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:13:56,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:13:56,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:13:56,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:13:56,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:13:56,857 INFO L87 Difference]: Start difference. First operand 6654 states and 9167 transitions. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-11-20 12:14:01,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:14:01,768 INFO L93 Difference]: Finished difference Result 16246 states and 23015 transitions. [2022-11-20 12:14:01,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:14:01,769 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 443 [2022-11-20 12:14:01,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:14:01,827 INFO L225 Difference]: With dead ends: 16246 [2022-11-20 12:14:01,828 INFO L226 Difference]: Without dead ends: 9677 [2022-11-20 12:14:01,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 444 GetRequests, 441 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 12:14:01,860 INFO L413 NwaCegarLoop]: 2489 mSDtfsCounter, 3337 mSDsluCounter, 2126 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 293 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3337 SdHoareTripleChecker+Valid, 4615 SdHoareTripleChecker+Invalid, 488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 293 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:14:01,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3337 Valid, 4615 Invalid, 488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [293 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-11-20 12:14:01,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9677 states. [2022-11-20 12:14:02,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9677 to 6600. [2022-11-20 12:14:02,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6600 states, 4806 states have (on average 1.328755722014149) internal successors, (6386), 4832 states have internal predecessors, (6386), 1358 states have call successors, (1358), 436 states have call predecessors, (1358), 435 states have return successors, (1357), 1353 states have call predecessors, (1357), 1357 states have call successors, (1357) [2022-11-20 12:14:02,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6600 states to 6600 states and 9101 transitions. [2022-11-20 12:14:02,566 INFO L78 Accepts]: Start accepts. Automaton has 6600 states and 9101 transitions. Word has length 443 [2022-11-20 12:14:02,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:14:02,567 INFO L495 AbstractCegarLoop]: Abstraction has 6600 states and 9101 transitions. [2022-11-20 12:14:02,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-11-20 12:14:02,568 INFO L276 IsEmpty]: Start isEmpty. Operand 6600 states and 9101 transitions. [2022-11-20 12:14:02,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 463 [2022-11-20 12:14:02,578 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:14:02,579 INFO L195 NwaCegarLoop]: trace histogram [33, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 8, 8, 8, 8, 8, 8, 8, 8, 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] [2022-11-20 12:14:02,677 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f68c899c-6767-4846-b614-f642b557696f/bin/uautomizer-ug76WZFUDN/mathsat -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 12:14:02,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f68c899c-6767-4846-b614-f642b557696f/bin/uautomizer-ug76WZFUDN/mathsat -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 12:14:02,804 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:14:02,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:14:02,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1081796214, now seen corresponding path program 1 times [2022-11-20 12:14:02,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:14:02,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2088701481] [2022-11-20 12:14:02,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:14:02,813 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 12:14:02,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f68c899c-6767-4846-b614-f642b557696f/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:14:02,814 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f68c899c-6767-4846-b614-f642b557696f/bin/uautomizer-ug76WZFUDN/mathsat -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 12:14:02,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f68c899c-6767-4846-b614-f642b557696f/bin/uautomizer-ug76WZFUDN/mathsat -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 12:14:11,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:12,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 6884 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 12:14:12,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:14:13,710 INFO L134 CoverageAnalysis]: Checked inductivity of 2735 backedges. 854 proven. 15 refuted. 0 times theorem prover too weak. 1866 trivial. 0 not checked. [2022-11-20 12:14:13,710 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:14:19,932 INFO L134 CoverageAnalysis]: Checked inductivity of 2735 backedges. 36 proven. 231 refuted. 0 times theorem prover too weak. 2468 trivial. 0 not checked. [2022-11-20 12:14:19,933 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:14:19,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2088701481] [2022-11-20 12:14:19,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2088701481] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:14:19,933 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:14:19,934 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2022-11-20 12:14:19,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013701101] [2022-11-20 12:14:19,934 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:14:19,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 12:14:19,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:14:19,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 12:14:19,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2022-11-20 12:14:19,937 INFO L87 Difference]: Start difference. First operand 6600 states and 9101 transitions. Second operand has 19 states, 17 states have (on average 8.882352941176471) internal successors, (151), 19 states have internal predecessors, (151), 4 states have call successors, (58), 2 states have call predecessors, (58), 5 states have return successors, (57), 4 states have call predecessors, (57), 4 states have call successors, (57) [2022-11-20 12:14:25,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:14:25,514 INFO L93 Difference]: Finished difference Result 13166 states and 18172 transitions. [2022-11-20 12:14:25,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 12:14:25,515 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 8.882352941176471) internal successors, (151), 19 states have internal predecessors, (151), 4 states have call successors, (58), 2 states have call predecessors, (58), 5 states have return successors, (57), 4 states have call predecessors, (57), 4 states have call successors, (57) Word has length 462 [2022-11-20 12:14:25,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:14:25,550 INFO L225 Difference]: With dead ends: 13166 [2022-11-20 12:14:25,551 INFO L226 Difference]: Without dead ends: 6607 [2022-11-20 12:14:25,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 929 GetRequests, 905 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=132, Invalid=518, Unknown=0, NotChecked=0, Total=650 [2022-11-20 12:14:25,578 INFO L413 NwaCegarLoop]: 2047 mSDtfsCounter, 40 mSDsluCounter, 20412 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 22459 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-20 12:14:25,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 22459 Invalid, 293 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [39 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-11-20 12:14:25,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6607 states. [2022-11-20 12:14:26,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6607 to 6607. [2022-11-20 12:14:26,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6607 states, 4813 states have (on average 1.3282775815499688) internal successors, (6393), 4839 states have internal predecessors, (6393), 1358 states have call successors, (1358), 436 states have call predecessors, (1358), 435 states have return successors, (1357), 1353 states have call predecessors, (1357), 1357 states have call successors, (1357) [2022-11-20 12:14:26,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6607 states to 6607 states and 9108 transitions. [2022-11-20 12:14:26,155 INFO L78 Accepts]: Start accepts. Automaton has 6607 states and 9108 transitions. Word has length 462 [2022-11-20 12:14:26,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:14:26,156 INFO L495 AbstractCegarLoop]: Abstraction has 6607 states and 9108 transitions. [2022-11-20 12:14:26,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 8.882352941176471) internal successors, (151), 19 states have internal predecessors, (151), 4 states have call successors, (58), 2 states have call predecessors, (58), 5 states have return successors, (57), 4 states have call predecessors, (57), 4 states have call successors, (57) [2022-11-20 12:14:26,157 INFO L276 IsEmpty]: Start isEmpty. Operand 6607 states and 9108 transitions. [2022-11-20 12:14:26,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 464 [2022-11-20 12:14:26,168 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:14:26,168 INFO L195 NwaCegarLoop]: trace histogram [34, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 8, 8, 8, 8, 8, 8, 8, 8, 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] [2022-11-20 12:14:26,286 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f68c899c-6767-4846-b614-f642b557696f/bin/uautomizer-ug76WZFUDN/mathsat -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 12:14:26,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f68c899c-6767-4846-b614-f642b557696f/bin/uautomizer-ug76WZFUDN/mathsat -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 12:14:26,384 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:14:26,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:14:26,384 INFO L85 PathProgramCache]: Analyzing trace with hash 2037191646, now seen corresponding path program 2 times [2022-11-20 12:14:26,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:14:26,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1601561386] [2022-11-20 12:14:26,393 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:14:26,394 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 12:14:26,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f68c899c-6767-4846-b614-f642b557696f/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:14:26,396 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f68c899c-6767-4846-b614-f642b557696f/bin/uautomizer-ug76WZFUDN/mathsat -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 12:14:26,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f68c899c-6767-4846-b614-f642b557696f/bin/uautomizer-ug76WZFUDN/mathsat -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 12:14:32,470 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 12:14:32,470 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:14:32,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 5398 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 12:14:32,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:14:33,169 INFO L134 CoverageAnalysis]: Checked inductivity of 2776 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2776 trivial. 0 not checked. [2022-11-20 12:14:33,170 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:14:33,170 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:14:33,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1601561386] [2022-11-20 12:14:33,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1601561386] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:14:33,171 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:14:33,171 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 12:14:33,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032826763] [2022-11-20 12:14:33,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:14:33,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:14:33,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:14:33,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:14:33,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:14:33,175 INFO L87 Difference]: Start difference. First operand 6607 states and 9108 transitions. Second operand has 6 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 3 states have call successors, (37), 2 states have call predecessors, (37), 3 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2022-11-20 12:14:39,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:14:39,685 INFO L93 Difference]: Finished difference Result 16078 states and 22770 transitions. [2022-11-20 12:14:39,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:14:39,686 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 3 states have call successors, (37), 2 states have call predecessors, (37), 3 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) Word has length 463 [2022-11-20 12:14:39,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:14:39,730 INFO L225 Difference]: With dead ends: 16078 [2022-11-20 12:14:39,730 INFO L226 Difference]: Without dead ends: 9557 [2022-11-20 12:14:39,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 463 GetRequests, 458 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 12:14:39,750 INFO L413 NwaCegarLoop]: 3000 mSDtfsCounter, 748 mSDsluCounter, 11079 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 937 SdHoareTripleChecker+Valid, 14079 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-11-20 12:14:39,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [937 Valid, 14079 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2022-11-20 12:14:39,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9557 states. [2022-11-20 12:14:40,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9557 to 6607. [2022-11-20 12:14:40,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6607 states, 4813 states have (on average 1.3274464990650323) internal successors, (6389), 4839 states have internal predecessors, (6389), 1358 states have call successors, (1358), 436 states have call predecessors, (1358), 435 states have return successors, (1357), 1353 states have call predecessors, (1357), 1357 states have call successors, (1357) [2022-11-20 12:14:40,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6607 states to 6607 states and 9104 transitions. [2022-11-20 12:14:40,354 INFO L78 Accepts]: Start accepts. Automaton has 6607 states and 9104 transitions. Word has length 463 [2022-11-20 12:14:40,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:14:40,355 INFO L495 AbstractCegarLoop]: Abstraction has 6607 states and 9104 transitions. [2022-11-20 12:14:40,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 3 states have call successors, (37), 2 states have call predecessors, (37), 3 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2022-11-20 12:14:40,356 INFO L276 IsEmpty]: Start isEmpty. Operand 6607 states and 9104 transitions. [2022-11-20 12:14:40,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 464 [2022-11-20 12:14:40,366 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:14:40,366 INFO L195 NwaCegarLoop]: trace histogram [34, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 8, 8, 8, 8, 8, 8, 8, 8, 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] [2022-11-20 12:14:40,463 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f68c899c-6767-4846-b614-f642b557696f/bin/uautomizer-ug76WZFUDN/mathsat -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 12:14:40,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f68c899c-6767-4846-b614-f642b557696f/bin/uautomizer-ug76WZFUDN/mathsat -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 12:14:40,592 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:14:40,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:14:40,592 INFO L85 PathProgramCache]: Analyzing trace with hash 231753312, now seen corresponding path program 1 times [2022-11-20 12:14:40,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:14:40,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [486680009] [2022-11-20 12:14:40,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:14:40,601 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 12:14:40,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f68c899c-6767-4846-b614-f642b557696f/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:14:40,603 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f68c899c-6767-4846-b614-f642b557696f/bin/uautomizer-ug76WZFUDN/mathsat -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 12:14:40,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f68c899c-6767-4846-b614-f642b557696f/bin/uautomizer-ug76WZFUDN/mathsat -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 12:14:50,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:50,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 6895 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 12:14:50,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:14:52,214 INFO L134 CoverageAnalysis]: Checked inductivity of 2776 backedges. 889 proven. 21 refuted. 0 times theorem prover too weak. 1866 trivial. 0 not checked. [2022-11-20 12:14:52,214 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:14:59,480 INFO L134 CoverageAnalysis]: Checked inductivity of 2776 backedges. 41 proven. 267 refuted. 0 times theorem prover too weak. 2468 trivial. 0 not checked. [2022-11-20 12:14:59,480 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:14:59,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [486680009] [2022-11-20 12:14:59,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [486680009] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:14:59,481 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:14:59,481 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2022-11-20 12:14:59,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267951182] [2022-11-20 12:14:59,482 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:14:59,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-20 12:14:59,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:14:59,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-20 12:14:59,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2022-11-20 12:14:59,484 INFO L87 Difference]: Start difference. First operand 6607 states and 9104 transitions. Second operand has 21 states, 19 states have (on average 8.052631578947368) internal successors, (153), 21 states have internal predecessors, (153), 4 states have call successors, (58), 2 states have call predecessors, (58), 5 states have return successors, (57), 4 states have call predecessors, (57), 4 states have call successors, (57) [2022-11-20 12:15:05,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:15:05,668 INFO L93 Difference]: Finished difference Result 13179 states and 18177 transitions. [2022-11-20 12:15:05,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-20 12:15:05,669 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 8.052631578947368) internal successors, (153), 21 states have internal predecessors, (153), 4 states have call successors, (58), 2 states have call predecessors, (58), 5 states have return successors, (57), 4 states have call predecessors, (57), 4 states have call successors, (57) Word has length 463 [2022-11-20 12:15:05,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:15:05,702 INFO L225 Difference]: With dead ends: 13179 [2022-11-20 12:15:05,703 INFO L226 Difference]: Without dead ends: 6614 [2022-11-20 12:15:05,724 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 931 GetRequests, 905 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=150, Invalid=606, Unknown=0, NotChecked=0, Total=756 [2022-11-20 12:15:05,724 INFO L413 NwaCegarLoop]: 2046 mSDtfsCounter, 45 mSDsluCounter, 24486 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 26532 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:15:05,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 26532 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 303 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-11-20 12:15:05,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6614 states. [2022-11-20 12:15:06,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6614 to 6614. [2022-11-20 12:15:06,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6614 states, 4820 states have (on average 1.3269709543568464) internal successors, (6396), 4846 states have internal predecessors, (6396), 1358 states have call successors, (1358), 436 states have call predecessors, (1358), 435 states have return successors, (1357), 1353 states have call predecessors, (1357), 1357 states have call successors, (1357) [2022-11-20 12:15:06,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6614 states to 6614 states and 9111 transitions. [2022-11-20 12:15:06,297 INFO L78 Accepts]: Start accepts. Automaton has 6614 states and 9111 transitions. Word has length 463 [2022-11-20 12:15:06,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:15:06,298 INFO L495 AbstractCegarLoop]: Abstraction has 6614 states and 9111 transitions. [2022-11-20 12:15:06,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 8.052631578947368) internal successors, (153), 21 states have internal predecessors, (153), 4 states have call successors, (58), 2 states have call predecessors, (58), 5 states have return successors, (57), 4 states have call predecessors, (57), 4 states have call successors, (57) [2022-11-20 12:15:06,298 INFO L276 IsEmpty]: Start isEmpty. Operand 6614 states and 9111 transitions. [2022-11-20 12:15:06,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 465 [2022-11-20 12:15:06,309 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:15:06,309 INFO L195 NwaCegarLoop]: trace histogram [35, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 8, 8, 8, 8, 8, 8, 8, 8, 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] [2022-11-20 12:15:06,439 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f68c899c-6767-4846-b614-f642b557696f/bin/uautomizer-ug76WZFUDN/mathsat -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 12:15:06,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f68c899c-6767-4846-b614-f642b557696f/bin/uautomizer-ug76WZFUDN/mathsat -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 12:15:06,524 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:15:06,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:15:06,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1863870836, now seen corresponding path program 2 times [2022-11-20 12:15:06,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:15:06,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1417010641] [2022-11-20 12:15:06,534 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:15:06,534 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 12:15:06,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f68c899c-6767-4846-b614-f642b557696f/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:15:06,535 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f68c899c-6767-4846-b614-f642b557696f/bin/uautomizer-ug76WZFUDN/mathsat -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 12:15:06,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f68c899c-6767-4846-b614-f642b557696f/bin/uautomizer-ug76WZFUDN/mathsat -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 12:15:13,457 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 12:15:13,457 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:15:13,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 5398 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:15:13,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:15:24,096 INFO L134 CoverageAnalysis]: Checked inductivity of 2818 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2818 trivial. 0 not checked. [2022-11-20 12:15:24,096 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:15:24,096 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:15:24,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1417010641] [2022-11-20 12:15:24,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1417010641] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:15:24,097 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:15:24,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:15:24,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146077675] [2022-11-20 12:15:24,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:15:24,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:15:24,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:15:24,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:15:24,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:15:24,101 INFO L87 Difference]: Start difference. First operand 6614 states and 9111 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 2 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2022-11-20 12:15:24,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:15:24,590 INFO L93 Difference]: Finished difference Result 6841 states and 9353 transitions. [2022-11-20 12:15:24,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:15:24,590 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 2 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) Word has length 464 [2022-11-20 12:15:24,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:15:24,626 INFO L225 Difference]: With dead ends: 6841 [2022-11-20 12:15:24,627 INFO L226 Difference]: Without dead ends: 6838 [2022-11-20 12:15:24,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 463 GetRequests, 462 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:15:24,633 INFO L413 NwaCegarLoop]: 2075 mSDtfsCounter, 1771 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1771 SdHoareTripleChecker+Valid, 2257 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:15:24,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1771 Valid, 2257 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:15:24,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6838 states. [2022-11-20 12:15:25,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6838 to 6838. [2022-11-20 12:15:25,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6838 states, 4973 states have (on average 1.3221395535893827) internal successors, (6575), 4999 states have internal predecessors, (6575), 1385 states have call successors, (1385), 480 states have call predecessors, (1385), 479 states have return successors, (1384), 1380 states have call predecessors, (1384), 1384 states have call successors, (1384) [2022-11-20 12:15:25,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6838 states to 6838 states and 9344 transitions. [2022-11-20 12:15:25,309 INFO L78 Accepts]: Start accepts. Automaton has 6838 states and 9344 transitions. Word has length 464 [2022-11-20 12:15:25,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:15:25,310 INFO L495 AbstractCegarLoop]: Abstraction has 6838 states and 9344 transitions. [2022-11-20 12:15:25,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 2 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2022-11-20 12:15:25,311 INFO L276 IsEmpty]: Start isEmpty. Operand 6838 states and 9344 transitions. [2022-11-20 12:15:25,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 465 [2022-11-20 12:15:25,321 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:15:25,321 INFO L195 NwaCegarLoop]: trace histogram [35, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 8, 8, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:15:25,419 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f68c899c-6767-4846-b614-f642b557696f/bin/uautomizer-ug76WZFUDN/mathsat -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 12:15:25,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f68c899c-6767-4846-b614-f642b557696f/bin/uautomizer-ug76WZFUDN/mathsat -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 12:15:25,536 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:15:25,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:15:25,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1536407144, now seen corresponding path program 1 times [2022-11-20 12:15:25,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:15:25,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1244854013] [2022-11-20 12:15:25,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:15:25,546 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:15:25,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f68c899c-6767-4846-b614-f642b557696f/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:15:25,547 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f68c899c-6767-4846-b614-f642b557696f/bin/uautomizer-ug76WZFUDN/mathsat -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 12:15:25,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f68c899c-6767-4846-b614-f642b557696f/bin/uautomizer-ug76WZFUDN/mathsat -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 12:15:36,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:36,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 7428 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-20 12:15:36,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:15:39,217 INFO L134 CoverageAnalysis]: Checked inductivity of 2816 backedges. 924 proven. 28 refuted. 0 times theorem prover too weak. 1864 trivial. 0 not checked. [2022-11-20 12:15:39,217 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:15:47,360 INFO L134 CoverageAnalysis]: Checked inductivity of 2816 backedges. 46 proven. 304 refuted. 0 times theorem prover too weak. 2466 trivial. 0 not checked. [2022-11-20 12:15:47,361 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:15:47,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1244854013] [2022-11-20 12:15:47,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1244854013] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:15:47,362 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:15:47,362 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2022-11-20 12:15:47,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122826325] [2022-11-20 12:15:47,362 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:15:47,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-20 12:15:47,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:15:47,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-20 12:15:47,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=415, Unknown=0, NotChecked=0, Total=506 [2022-11-20 12:15:47,365 INFO L87 Difference]: Start difference. First operand 6838 states and 9344 transitions. Second operand has 23 states, 21 states have (on average 7.523809523809524) internal successors, (158), 23 states have internal predecessors, (158), 4 states have call successors, (55), 2 states have call predecessors, (55), 5 states have return successors, (53), 4 states have call predecessors, (53), 4 states have call successors, (53) [2022-11-20 12:15:54,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:15:54,576 INFO L93 Difference]: Finished difference Result 13640 states and 18656 transitions. [2022-11-20 12:15:54,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-20 12:15:54,577 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 7.523809523809524) internal successors, (158), 23 states have internal predecessors, (158), 4 states have call successors, (55), 2 states have call predecessors, (55), 5 states have return successors, (53), 4 states have call predecessors, (53), 4 states have call successors, (53) Word has length 464 [2022-11-20 12:15:54,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:15:54,610 INFO L225 Difference]: With dead ends: 13640 [2022-11-20 12:15:54,610 INFO L226 Difference]: Without dead ends: 6845 [2022-11-20 12:15:54,638 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 933 GetRequests, 905 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=169, Invalid=701, Unknown=0, NotChecked=0, Total=870 [2022-11-20 12:15:54,638 INFO L413 NwaCegarLoop]: 2046 mSDtfsCounter, 44 mSDsluCounter, 24493 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 26539 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-11-20 12:15:54,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 26539 Invalid, 361 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [37 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-11-20 12:15:54,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6845 states. [2022-11-20 12:15:55,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6845 to 6845. [2022-11-20 12:15:55,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6845 states, 4980 states have (on average 1.3216867469879519) internal successors, (6582), 5006 states have internal predecessors, (6582), 1385 states have call successors, (1385), 480 states have call predecessors, (1385), 479 states have return successors, (1384), 1380 states have call predecessors, (1384), 1384 states have call successors, (1384) [2022-11-20 12:15:55,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6845 states to 6845 states and 9351 transitions. [2022-11-20 12:15:55,440 INFO L78 Accepts]: Start accepts. Automaton has 6845 states and 9351 transitions. Word has length 464 [2022-11-20 12:15:55,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:15:55,441 INFO L495 AbstractCegarLoop]: Abstraction has 6845 states and 9351 transitions. [2022-11-20 12:15:55,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 7.523809523809524) internal successors, (158), 23 states have internal predecessors, (158), 4 states have call successors, (55), 2 states have call predecessors, (55), 5 states have return successors, (53), 4 states have call predecessors, (53), 4 states have call successors, (53) [2022-11-20 12:15:55,441 INFO L276 IsEmpty]: Start isEmpty. Operand 6845 states and 9351 transitions. [2022-11-20 12:15:55,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 466 [2022-11-20 12:15:55,452 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:15:55,453 INFO L195 NwaCegarLoop]: trace histogram [36, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 8, 8, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:15:55,595 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f68c899c-6767-4846-b614-f642b557696f/bin/uautomizer-ug76WZFUDN/mathsat -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 12:15:55,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f68c899c-6767-4846-b614-f642b557696f/bin/uautomizer-ug76WZFUDN/mathsat -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 12:15:55,668 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:15:55,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:15:55,668 INFO L85 PathProgramCache]: Analyzing trace with hash -2076246292, now seen corresponding path program 2 times [2022-11-20 12:15:55,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:15:55,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [76295057] [2022-11-20 12:15:55,678 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:15:55,678 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 12:15:55,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f68c899c-6767-4846-b614-f642b557696f/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:15:55,680 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f68c899c-6767-4846-b614-f642b557696f/bin/uautomizer-ug76WZFUDN/mathsat -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 12:15:55,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f68c899c-6767-4846-b614-f642b557696f/bin/uautomizer-ug76WZFUDN/mathsat -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 12:16:03,876 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 12:16:03,876 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:16:04,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 5920 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 12:16:04,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:16:04,481 INFO L134 CoverageAnalysis]: Checked inductivity of 2859 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2859 trivial. 0 not checked. [2022-11-20 12:16:04,481 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:16:04,481 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:16:04,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [76295057] [2022-11-20 12:16:04,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [76295057] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:16:04,482 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:16:04,482 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:16:04,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385162066] [2022-11-20 12:16:04,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:16:04,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:16:04,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:16:04,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:16:04,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:16:04,491 INFO L87 Difference]: Start difference. First operand 6845 states and 9351 transitions. Second operand has 5 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 3 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2022-11-20 12:16:05,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:16:05,333 INFO L93 Difference]: Finished difference Result 6864 states and 9369 transitions. [2022-11-20 12:16:05,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:16:05,335 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 3 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 465 [2022-11-20 12:16:05,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:16:05,361 INFO L225 Difference]: With dead ends: 6864 [2022-11-20 12:16:05,362 INFO L226 Difference]: Without dead ends: 6861 [2022-11-20 12:16:05,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 465 GetRequests, 461 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 12:16:05,366 INFO L413 NwaCegarLoop]: 2054 mSDtfsCounter, 11 mSDsluCounter, 6141 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 8195 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:16:05,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 8195 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 12:16:05,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6861 states. [2022-11-20 12:16:05,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6861 to 6861. [2022-11-20 12:16:05,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6861 states, 4992 states have (on average 1.3205128205128205) internal successors, (6592), 5018 states have internal predecessors, (6592), 1385 states have call successors, (1385), 484 states have call predecessors, (1385), 483 states have return successors, (1384), 1380 states have call predecessors, (1384), 1384 states have call successors, (1384) [2022-11-20 12:16:05,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6861 states to 6861 states and 9361 transitions. [2022-11-20 12:16:05,975 INFO L78 Accepts]: Start accepts. Automaton has 6861 states and 9361 transitions. Word has length 465 [2022-11-20 12:16:05,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:16:05,976 INFO L495 AbstractCegarLoop]: Abstraction has 6861 states and 9361 transitions. [2022-11-20 12:16:05,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 3 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2022-11-20 12:16:05,977 INFO L276 IsEmpty]: Start isEmpty. Operand 6861 states and 9361 transitions. [2022-11-20 12:16:06,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 502 [2022-11-20 12:16:06,040 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:16:06,041 INFO L195 NwaCegarLoop]: trace histogram [36, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 8, 8, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:16:06,168 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f68c899c-6767-4846-b614-f642b557696f/bin/uautomizer-ug76WZFUDN/mathsat -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 12:16:06,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f68c899c-6767-4846-b614-f642b557696f/bin/uautomizer-ug76WZFUDN/mathsat -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 12:16:06,256 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:16:06,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:16:06,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1900771600, now seen corresponding path program 1 times [2022-11-20 12:16:06,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:16:06,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1182679105] [2022-11-20 12:16:06,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:16:06,266 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 12:16:06,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f68c899c-6767-4846-b614-f642b557696f/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:16:06,267 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f68c899c-6767-4846-b614-f642b557696f/bin/uautomizer-ug76WZFUDN/mathsat -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 12:16:06,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f68c899c-6767-4846-b614-f642b557696f/bin/uautomizer-ug76WZFUDN/mathsat -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 12:16:22,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:16:23,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 8276 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-20 12:16:23,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:16:26,998 INFO L134 CoverageAnalysis]: Checked inductivity of 3088 backedges. 595 proven. 0 refuted. 0 times theorem prover too weak. 2493 trivial. 0 not checked. [2022-11-20 12:16:26,999 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:16:26,999 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:16:26,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1182679105] [2022-11-20 12:16:27,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1182679105] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:16:27,000 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:16:27,000 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 12:16:27,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546845939] [2022-11-20 12:16:27,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:16:27,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 12:16:27,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:16:27,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 12:16:27,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-11-20 12:16:27,003 INFO L87 Difference]: Start difference. First operand 6861 states and 9361 transitions. Second operand has 12 states, 10 states have (on average 12.7) internal successors, (127), 9 states have internal predecessors, (127), 4 states have call successors, (43), 2 states have call predecessors, (43), 5 states have return successors, (40), 5 states have call predecessors, (40), 4 states have call successors, (40) [2022-11-20 12:16:33,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:16:33,745 INFO L93 Difference]: Finished difference Result 19910 states and 28616 transitions. [2022-11-20 12:16:33,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 12:16:33,747 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 12.7) internal successors, (127), 9 states have internal predecessors, (127), 4 states have call successors, (43), 2 states have call predecessors, (43), 5 states have return successors, (40), 5 states have call predecessors, (40), 4 states have call successors, (40) Word has length 501 [2022-11-20 12:16:33,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:16:33,800 INFO L225 Difference]: With dead ends: 19910 [2022-11-20 12:16:33,800 INFO L226 Difference]: Without dead ends: 13137 [2022-11-20 12:16:33,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 506 GetRequests, 491 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2022-11-20 12:16:33,821 INFO L413 NwaCegarLoop]: 2520 mSDtfsCounter, 2984 mSDsluCounter, 25120 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 591 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3181 SdHoareTripleChecker+Valid, 27640 SdHoareTripleChecker+Invalid, 781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 591 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-20 12:16:33,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3181 Valid, 27640 Invalid, 781 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [591 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-11-20 12:16:33,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13137 states. [2022-11-20 12:16:34,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13137 to 6917. [2022-11-20 12:16:34,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6917 states, 5032 states have (on average 1.3179650238473768) internal successors, (6632), 5058 states have internal predecessors, (6632), 1393 states have call successors, (1393), 484 states have call predecessors, (1393), 491 states have return successors, (1456), 1396 states have call predecessors, (1456), 1392 states have call successors, (1456) [2022-11-20 12:16:34,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6917 states to 6917 states and 9481 transitions. [2022-11-20 12:16:34,857 INFO L78 Accepts]: Start accepts. Automaton has 6917 states and 9481 transitions. Word has length 501 [2022-11-20 12:16:34,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:16:34,858 INFO L495 AbstractCegarLoop]: Abstraction has 6917 states and 9481 transitions. [2022-11-20 12:16:34,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 12.7) internal successors, (127), 9 states have internal predecessors, (127), 4 states have call successors, (43), 2 states have call predecessors, (43), 5 states have return successors, (40), 5 states have call predecessors, (40), 4 states have call successors, (40) [2022-11-20 12:16:34,858 INFO L276 IsEmpty]: Start isEmpty. Operand 6917 states and 9481 transitions. [2022-11-20 12:16:34,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 502 [2022-11-20 12:16:34,878 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:16:34,879 INFO L195 NwaCegarLoop]: trace histogram [36, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 8, 8, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:16:35,021 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f68c899c-6767-4846-b614-f642b557696f/bin/uautomizer-ug76WZFUDN/mathsat -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 12:16:35,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f68c899c-6767-4846-b614-f642b557696f/bin/uautomizer-ug76WZFUDN/mathsat -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 12:16:35,096 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:16:35,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:16:35,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1301560494, now seen corresponding path program 1 times [2022-11-20 12:16:35,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:16:35,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1219771126] [2022-11-20 12:16:35,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:16:35,107 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 12:16:35,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f68c899c-6767-4846-b614-f642b557696f/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:16:35,108 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f68c899c-6767-4846-b614-f642b557696f/bin/uautomizer-ug76WZFUDN/mathsat -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 12:16:35,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f68c899c-6767-4846-b614-f642b557696f/bin/uautomizer-ug76WZFUDN/mathsat -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 12:16:51,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:16:52,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 8276 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-20 12:16:52,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:16:53,692 INFO L134 CoverageAnalysis]: Checked inductivity of 3088 backedges. 595 proven. 0 refuted. 0 times theorem prover too weak. 2493 trivial. 0 not checked. [2022-11-20 12:16:53,693 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:16:53,693 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:16:53,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1219771126] [2022-11-20 12:16:53,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1219771126] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:16:53,694 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:16:53,694 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 12:16:53,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048619044] [2022-11-20 12:16:53,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:16:53,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:16:53,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:16:53,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:16:53,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:16:53,697 INFO L87 Difference]: Start difference. First operand 6917 states and 9481 transitions. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 7 states have internal predecessors, (127), 3 states have call successors, (43), 2 states have call predecessors, (43), 3 states have return successors, (40), 4 states have call predecessors, (40), 3 states have call successors, (40) [2022-11-20 12:17:01,717 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:17:24,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:17:24,088 INFO L93 Difference]: Finished difference Result 23639 states and 33116 transitions. [2022-11-20 12:17:24,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 12:17:24,089 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 7 states have internal predecessors, (127), 3 states have call successors, (43), 2 states have call predecessors, (43), 3 states have return successors, (40), 4 states have call predecessors, (40), 3 states have call successors, (40) Word has length 501 [2022-11-20 12:17:24,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:17:24,145 INFO L225 Difference]: With dead ends: 23639 [2022-11-20 12:17:24,145 INFO L226 Difference]: Without dead ends: 16810 [2022-11-20 12:17:24,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 510 GetRequests, 496 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2022-11-20 12:17:24,165 INFO L413 NwaCegarLoop]: 2958 mSDtfsCounter, 5618 mSDsluCounter, 16794 mSDsCounter, 0 mSdLazyCounter, 1551 mSolverCounterSat, 1144 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5624 SdHoareTripleChecker+Valid, 19752 SdHoareTripleChecker+Invalid, 2696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1144 IncrementalHoareTripleChecker+Valid, 1551 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:17:24,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5624 Valid, 19752 Invalid, 2696 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1144 Valid, 1551 Invalid, 1 Unknown, 0 Unchecked, 26.1s Time] [2022-11-20 12:17:24,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16810 states. [2022-11-20 12:17:25,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16810 to 13601. [2022-11-20 12:17:25,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13601 states, 9891 states have (on average 1.3206955818420787) internal successors, (13063), 9961 states have internal predecessors, (13063), 2743 states have call successors, (2743), 951 states have call predecessors, (2743), 966 states have return successors, (2870), 2732 states have call predecessors, (2870), 2742 states have call successors, (2870) [2022-11-20 12:17:25,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13601 states to 13601 states and 18676 transitions. [2022-11-20 12:17:25,840 INFO L78 Accepts]: Start accepts. Automaton has 13601 states and 18676 transitions. Word has length 501 [2022-11-20 12:17:25,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:17:25,841 INFO L495 AbstractCegarLoop]: Abstraction has 13601 states and 18676 transitions. [2022-11-20 12:17:25,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 7 states have internal predecessors, (127), 3 states have call successors, (43), 2 states have call predecessors, (43), 3 states have return successors, (40), 4 states have call predecessors, (40), 3 states have call successors, (40) [2022-11-20 12:17:25,842 INFO L276 IsEmpty]: Start isEmpty. Operand 13601 states and 18676 transitions. [2022-11-20 12:17:25,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 522 [2022-11-20 12:17:25,864 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:17:25,865 INFO L195 NwaCegarLoop]: trace histogram [36, 19, 19, 19, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 8, 8, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:17:25,977 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f68c899c-6767-4846-b614-f642b557696f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-20 12:17:26,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f68c899c-6767-4846-b614-f642b557696f/bin/uautomizer-ug76WZFUDN/mathsat -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 12:17:26,080 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:17:26,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:17:26,080 INFO L85 PathProgramCache]: Analyzing trace with hash 356857799, now seen corresponding path program 1 times [2022-11-20 12:17:26,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:17:26,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [822266211] [2022-11-20 12:17:26,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:17:26,088 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 12:17:26,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f68c899c-6767-4846-b614-f642b557696f/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:17:26,090 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f68c899c-6767-4846-b614-f642b557696f/bin/uautomizer-ug76WZFUDN/mathsat -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 12:17:26,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f68c899c-6767-4846-b614-f642b557696f/bin/uautomizer-ug76WZFUDN/mathsat -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 12:17:43,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:17:44,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 8319 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:17:44,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:17:46,159 INFO L134 CoverageAnalysis]: Checked inductivity of 3236 backedges. 619 proven. 0 refuted. 0 times theorem prover too weak. 2617 trivial. 0 not checked. [2022-11-20 12:17:46,160 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:17:46,160 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:17:46,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [822266211] [2022-11-20 12:17:46,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [822266211] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:17:46,161 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:17:46,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:17:46,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428643419] [2022-11-20 12:17:46,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:17:46,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:17:46,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:17:46,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:17:46,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:17:46,165 INFO L87 Difference]: Start difference. First operand 13601 states and 18676 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 3 states have call successors, (46), 3 states have call predecessors, (46), 3 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) [2022-11-20 12:17:48,782 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.61s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:17:51,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:17:51,862 INFO L93 Difference]: Finished difference Result 31570 states and 43254 transitions. [2022-11-20 12:17:51,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:17:51,863 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 3 states have call successors, (46), 3 states have call predecessors, (46), 3 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) Word has length 521 [2022-11-20 12:17:51,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:17:51,914 INFO L225 Difference]: With dead ends: 31570 [2022-11-20 12:17:51,914 INFO L226 Difference]: Without dead ends: 18057 [2022-11-20 12:17:51,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 520 GetRequests, 519 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:17:51,951 INFO L413 NwaCegarLoop]: 3222 mSDtfsCounter, 1716 mSDsluCounter, 1468 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1716 SdHoareTripleChecker+Valid, 4690 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-20 12:17:51,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1716 Valid, 4690 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 25 Invalid, 1 Unknown, 0 Unchecked, 3.8s Time] [2022-11-20 12:17:51,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18057 states. [2022-11-20 12:17:54,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18057 to 18053. [2022-11-20 12:17:54,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18053 states, 13235 states have (on average 1.32217604835663) internal successors, (17499), 13325 states have internal predecessors, (17499), 3491 states have call successors, (3491), 1303 states have call predecessors, (3491), 1326 states have return successors, (3638), 3476 states have call predecessors, (3638), 3490 states have call successors, (3638) [2022-11-20 12:17:54,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18053 states to 18053 states and 24628 transitions. [2022-11-20 12:17:54,139 INFO L78 Accepts]: Start accepts. Automaton has 18053 states and 24628 transitions. Word has length 521 [2022-11-20 12:17:54,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:17:54,140 INFO L495 AbstractCegarLoop]: Abstraction has 18053 states and 24628 transitions. [2022-11-20 12:17:54,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 3 states have call successors, (46), 3 states have call predecessors, (46), 3 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) [2022-11-20 12:17:54,140 INFO L276 IsEmpty]: Start isEmpty. Operand 18053 states and 24628 transitions. [2022-11-20 12:17:54,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 536 [2022-11-20 12:17:54,162 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:17:54,162 INFO L195 NwaCegarLoop]: trace histogram [36, 19, 19, 19, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 8, 8, 8, 8, 8, 8, 8, 8, 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] [2022-11-20 12:17:54,260 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f68c899c-6767-4846-b614-f642b557696f/bin/uautomizer-ug76WZFUDN/mathsat -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 12:17:54,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f68c899c-6767-4846-b614-f642b557696f/bin/uautomizer-ug76WZFUDN/mathsat -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 12:17:54,364 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:17:54,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:17:54,364 INFO L85 PathProgramCache]: Analyzing trace with hash 493360554, now seen corresponding path program 1 times [2022-11-20 12:17:54,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:17:54,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1893831547] [2022-11-20 12:17:54,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:17:54,371 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 12:17:54,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f68c899c-6767-4846-b614-f642b557696f/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:17:54,372 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f68c899c-6767-4846-b614-f642b557696f/bin/uautomizer-ug76WZFUDN/mathsat -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 12:17:54,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f68c899c-6767-4846-b614-f642b557696f/bin/uautomizer-ug76WZFUDN/mathsat -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 12:18:12,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:18:13,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 8616 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 12:18:13,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:18:13,567 INFO L134 CoverageAnalysis]: Checked inductivity of 3244 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3236 trivial. 0 not checked. [2022-11-20 12:18:13,567 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:18:13,567 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:18:13,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1893831547] [2022-11-20 12:18:13,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1893831547] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:18:13,568 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:18:13,568 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:18:13,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616160285] [2022-11-20 12:18:13,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:18:13,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:18:13,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:18:13,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:18:13,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:18:13,572 INFO L87 Difference]: Start difference. First operand 18053 states and 24628 transitions. Second operand has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 2 states have call successors, (45), 2 states have call predecessors, (45), 2 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2022-11-20 12:18:16,193 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.62s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:18:23,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:18:23,647 INFO L93 Difference]: Finished difference Result 43714 states and 59826 transitions. [2022-11-20 12:18:23,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:18:23,648 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 2 states have call successors, (45), 2 states have call predecessors, (45), 2 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) Word has length 535 [2022-11-20 12:18:23,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:18:23,741 INFO L225 Difference]: With dead ends: 43714 [2022-11-20 12:18:23,741 INFO L226 Difference]: Without dead ends: 25749 [2022-11-20 12:18:23,918 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 536 GetRequests, 533 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 12:18:23,918 INFO L413 NwaCegarLoop]: 3731 mSDtfsCounter, 2077 mSDsluCounter, 5355 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 167 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2077 SdHoareTripleChecker+Valid, 9086 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:18:23,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2077 Valid, 9086 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 110 Invalid, 1 Unknown, 0 Unchecked, 6.5s Time] [2022-11-20 12:18:23,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25749 states. [2022-11-20 12:18:26,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25749 to 18069. [2022-11-20 12:18:26,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18069 states, 13251 states have (on average 1.3217870349407592) internal successors, (17515), 13341 states have internal predecessors, (17515), 3491 states have call successors, (3491), 1303 states have call predecessors, (3491), 1326 states have return successors, (3638), 3476 states have call predecessors, (3638), 3490 states have call successors, (3638) [2022-11-20 12:18:26,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18069 states to 18069 states and 24644 transitions. [2022-11-20 12:18:26,396 INFO L78 Accepts]: Start accepts. Automaton has 18069 states and 24644 transitions. Word has length 535 [2022-11-20 12:18:26,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:18:26,396 INFO L495 AbstractCegarLoop]: Abstraction has 18069 states and 24644 transitions. [2022-11-20 12:18:26,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 2 states have call successors, (45), 2 states have call predecessors, (45), 2 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2022-11-20 12:18:26,397 INFO L276 IsEmpty]: Start isEmpty. Operand 18069 states and 24644 transitions. [2022-11-20 12:18:26,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 529 [2022-11-20 12:18:26,421 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:18:26,422 INFO L195 NwaCegarLoop]: trace histogram [36, 19, 19, 19, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 8, 8, 8, 8, 8, 8, 8, 8, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:18:26,535 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f68c899c-6767-4846-b614-f642b557696f/bin/uautomizer-ug76WZFUDN/mathsat -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 12:18:26,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f68c899c-6767-4846-b614-f642b557696f/bin/uautomizer-ug76WZFUDN/mathsat -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 12:18:26,623 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:18:26,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:18:26,624 INFO L85 PathProgramCache]: Analyzing trace with hash -481895520, now seen corresponding path program 1 times [2022-11-20 12:18:26,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:18:26,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1302860469] [2022-11-20 12:18:26,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:18:26,631 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:18:26,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f68c899c-6767-4846-b614-f642b557696f/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:18:26,633 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f68c899c-6767-4846-b614-f642b557696f/bin/uautomizer-ug76WZFUDN/mathsat -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 12:18:26,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f68c899c-6767-4846-b614-f642b557696f/bin/uautomizer-ug76WZFUDN/mathsat -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 12:18:45,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:18:45,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 8585 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 12:18:45,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:18:45,965 INFO L134 CoverageAnalysis]: Checked inductivity of 3237 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3229 trivial. 0 not checked. [2022-11-20 12:18:45,965 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:18:45,965 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:18:45,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1302860469] [2022-11-20 12:18:45,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1302860469] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:18:45,966 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:18:45,967 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:18:45,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311694100] [2022-11-20 12:18:45,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:18:45,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:18:45,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:18:45,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:18:45,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:18:45,969 INFO L87 Difference]: Start difference. First operand 18069 states and 24644 transitions. Second operand has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 2 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2022-11-20 12:18:48,585 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.61s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:18:56,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:18:56,308 INFO L93 Difference]: Finished difference Result 43754 states and 59866 transitions. [2022-11-20 12:18:56,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:18:56,309 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 2 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) Word has length 528 [2022-11-20 12:18:56,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:18:56,388 INFO L225 Difference]: With dead ends: 43754 [2022-11-20 12:18:56,388 INFO L226 Difference]: Without dead ends: 25773 [2022-11-20 12:18:56,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 529 GetRequests, 526 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 12:18:56,424 INFO L413 NwaCegarLoop]: 3734 mSDtfsCounter, 2077 mSDsluCounter, 5355 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 167 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2077 SdHoareTripleChecker+Valid, 9089 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:18:56,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2077 Valid, 9089 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 110 Invalid, 1 Unknown, 0 Unchecked, 6.2s Time] [2022-11-20 12:18:56,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25773 states. [2022-11-20 12:18:59,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25773 to 18069. [2022-11-20 12:18:59,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18069 states, 13251 states have (on average 1.3217870349407592) internal successors, (17515), 13341 states have internal predecessors, (17515), 3491 states have call successors, (3491), 1303 states have call predecessors, (3491), 1326 states have return successors, (3638), 3476 states have call predecessors, (3638), 3490 states have call successors, (3638) [2022-11-20 12:18:59,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18069 states to 18069 states and 24644 transitions. [2022-11-20 12:18:59,340 INFO L78 Accepts]: Start accepts. Automaton has 18069 states and 24644 transitions. Word has length 528 [2022-11-20 12:18:59,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:18:59,341 INFO L495 AbstractCegarLoop]: Abstraction has 18069 states and 24644 transitions. [2022-11-20 12:18:59,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 2 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2022-11-20 12:18:59,341 INFO L276 IsEmpty]: Start isEmpty. Operand 18069 states and 24644 transitions. [2022-11-20 12:18:59,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 563 [2022-11-20 12:18:59,363 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:18:59,364 INFO L195 NwaCegarLoop]: trace histogram [36, 19, 19, 19, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 8, 8, 8, 8, 8, 8, 8, 8, 4, 4, 3, 3, 3, 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 12:18:59,468 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f68c899c-6767-4846-b614-f642b557696f/bin/uautomizer-ug76WZFUDN/mathsat -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 12:18:59,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f68c899c-6767-4846-b614-f642b557696f/bin/uautomizer-ug76WZFUDN/mathsat -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 12:18:59,565 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:18:59,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:18:59,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1170057219, now seen corresponding path program 1 times [2022-11-20 12:18:59,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:18:59,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [498103144] [2022-11-20 12:18:59,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:18:59,573 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 12:18:59,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f68c899c-6767-4846-b614-f642b557696f/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:18:59,574 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f68c899c-6767-4846-b614-f642b557696f/bin/uautomizer-ug76WZFUDN/mathsat -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 12:18:59,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f68c899c-6767-4846-b614-f642b557696f/bin/uautomizer-ug76WZFUDN/mathsat -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 12:19:19,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:19,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 8714 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-20 12:19:19,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:19:28,466 INFO L134 CoverageAnalysis]: Checked inductivity of 3262 backedges. 572 proven. 26 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2022-11-20 12:19:28,466 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:19:39,524 INFO L134 CoverageAnalysis]: Checked inductivity of 3262 backedges. 110 proven. 12 refuted. 0 times theorem prover too weak. 3140 trivial. 0 not checked. [2022-11-20 12:19:39,525 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:19:39,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [498103144] [2022-11-20 12:19:39,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [498103144] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:19:39,525 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:19:39,526 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15] total 28 [2022-11-20 12:19:39,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163901095] [2022-11-20 12:19:39,526 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:19:39,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-20 12:19:39,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:19:39,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-20 12:19:39,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=686, Unknown=0, NotChecked=0, Total=756 [2022-11-20 12:19:39,529 INFO L87 Difference]: Start difference. First operand 18069 states and 24644 transitions. Second operand has 28 states, 27 states have (on average 8.037037037037036) internal successors, (217), 20 states have internal predecessors, (217), 8 states have call successors, (62), 3 states have call predecessors, (62), 10 states have return successors, (63), 15 states have call predecessors, (63), 8 states have call successors, (63) [2022-11-20 12:19:42,169 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.64s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:20:00,773 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:20:07,483 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:20:31,004 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:20:35,033 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:20:41,338 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:21:04,376 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:21:05,440 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:21:08,099 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:21:10,192 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:21:11,347 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:21:12,521 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:22:07,898 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:22:08,906 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:22:09,930 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:22:51,888 WARN L539 Checker$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 12:22:53,896 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:23:46,455 WARN L539 Checker$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 12:23:48,464 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:23:59,651 WARN L539 Checker$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 12:24:01,338 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:24:03,355 WARN L539 Checker$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 12:24:05,363 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:24:07,104 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:24:09,123 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:24:11,135 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:24:13,003 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:24:15,021 WARN L539 Checker$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 12:24:17,028 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:24:19,039 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:24:21,046 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:24:22,745 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:24:24,665 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.92s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:24:26,685 WARN L539 Checker$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 12:24:28,700 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:24:30,704 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:24:32,714 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers []