./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-validator-v0.6/linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ff1e83e-220c-4c14-837f-f2a48e9ebb19/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ff1e83e-220c-4c14-837f-f2a48e9ebb19/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_1ff1e83e-220c-4c14-837f-f2a48e9ebb19/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ff1e83e-220c-4c14-837f-f2a48e9ebb19/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-validator-v0.6/linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ff1e83e-220c-4c14-837f-f2a48e9ebb19/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_1ff1e83e-220c-4c14-837f-f2a48e9ebb19/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 6063bfeeaa4a025ac67d1a7a9b5cc20b489e34fc9db0d4dd9fcdda86c75b9c5e --- 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 12:22:51,886 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:22:51,889 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:22:51,932 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:22:51,933 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:22:51,936 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:22:51,939 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:22:51,942 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:22:51,944 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:22:51,950 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:22:51,952 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:22:51,955 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:22:51,955 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:22:51,958 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:22:51,959 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:22:51,962 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:22:51,963 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:22:51,965 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:22:51,967 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:22:51,974 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:22:51,977 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:22:51,979 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:22:51,981 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:22:51,982 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:22:51,992 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:22:51,993 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:22:51,993 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:22:51,995 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:22:51,996 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:22:51,997 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:22:51,997 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:22:51,998 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:22:52,000 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:22:52,001 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:22:52,004 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:22:52,004 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:22:52,005 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:22:52,006 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:22:52,006 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:22:52,008 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:22:52,010 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:22:52,011 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ff1e83e-220c-4c14-837f-f2a48e9ebb19/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-20 12:22:52,049 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:22:52,049 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:22:52,050 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:22:52,050 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:22:52,051 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:22:52,052 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:22:52,052 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:22:52,053 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:22:52,053 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:22:52,053 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:22:52,054 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:22:52,055 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:22:52,055 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:22:52,055 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:22:52,055 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:22:52,056 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:22:52,056 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:22:52,056 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:22:52,056 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:22:52,057 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:22:52,057 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:22:52,057 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:22:52,057 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:22:52,058 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:22:52,058 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:22:52,058 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 12:22:52,058 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 12:22:52,058 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:22:52,059 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:22:52,059 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:22:52,059 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_1ff1e83e-220c-4c14-837f-f2a48e9ebb19/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ff1e83e-220c-4c14-837f-f2a48e9ebb19/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6063bfeeaa4a025ac67d1a7a9b5cc20b489e34fc9db0d4dd9fcdda86c75b9c5e [2022-11-20 12:22:52,323 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:22:52,348 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:22:52,351 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:22:52,353 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:22:52,354 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:22:52,355 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ff1e83e-220c-4c14-837f-f2a48e9ebb19/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/ldv-validator-v0.6/linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point.cil.out.i [2022-11-20 12:22:55,430 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:22:55,986 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:22:55,987 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ff1e83e-220c-4c14-837f-f2a48e9ebb19/sv-benchmarks/c/ldv-validator-v0.6/linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point.cil.out.i [2022-11-20 12:22:56,026 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ff1e83e-220c-4c14-837f-f2a48e9ebb19/bin/uautomizer-ug76WZFUDN/data/f32d8f992/7bcef8db38f24addb87de76b9e1eff6b/FLAGa17d81369 [2022-11-20 12:22:56,046 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ff1e83e-220c-4c14-837f-f2a48e9ebb19/bin/uautomizer-ug76WZFUDN/data/f32d8f992/7bcef8db38f24addb87de76b9e1eff6b [2022-11-20 12:22:56,049 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:22:56,050 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:22:56,054 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:22:56,054 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:22:56,058 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:22:56,059 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:22:56" (1/1) ... [2022-11-20 12:22:56,060 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@377a4ef4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:22:56, skipping insertion in model container [2022-11-20 12:22:56,060 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:22:56" (1/1) ... [2022-11-20 12:22:56,070 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:22:56,201 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:22:56,827 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 12:22:56,833 INFO L158 Benchmark]: Toolchain (without parser) took 781.49ms. Allocated memory is still 182.5MB. Free memory was 125.7MB in the beginning and 80.2MB in the end (delta: 45.4MB). Peak memory consumption was 46.1MB. Max. memory is 16.1GB. [2022-11-20 12:22:56,833 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 144.7MB. Free memory is still 86.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 12:22:56,834 INFO L158 Benchmark]: CACSL2BoogieTranslator took 777.39ms. Allocated memory is still 182.5MB. Free memory was 125.7MB in the beginning and 80.2MB in the end (delta: 45.4MB). Peak memory consumption was 46.1MB. Max. memory is 16.1GB. [2022-11-20 12:22:56,835 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 144.7MB. Free memory is still 86.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 777.39ms. Allocated memory is still 182.5MB. Free memory was 125.7MB in the beginning and 80.2MB in the end (delta: 45.4MB). Peak memory consumption was 46.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: NullPointerException: null: de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.TypeSizes.extractIntegerValue(TypeSizes.java:384) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ff1e83e-220c-4c14-837f-f2a48e9ebb19/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ff1e83e-220c-4c14-837f-f2a48e9ebb19/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_1ff1e83e-220c-4c14-837f-f2a48e9ebb19/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ff1e83e-220c-4c14-837f-f2a48e9ebb19/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-validator-v0.6/linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ff1e83e-220c-4c14-837f-f2a48e9ebb19/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_1ff1e83e-220c-4c14-837f-f2a48e9ebb19/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 6063bfeeaa4a025ac67d1a7a9b5cc20b489e34fc9db0d4dd9fcdda86c75b9c5e --- 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 12:22:59,333 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:22:59,336 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:22:59,375 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:22:59,376 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:22:59,379 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:22:59,382 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:22:59,385 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:22:59,387 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:22:59,393 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:22:59,394 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:22:59,395 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:22:59,396 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:22:59,398 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:22:59,399 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:22:59,406 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:22:59,407 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:22:59,408 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:22:59,410 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:22:59,414 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:22:59,416 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:22:59,418 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:22:59,419 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:22:59,420 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:22:59,430 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:22:59,430 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:22:59,431 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:22:59,433 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:22:59,433 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:22:59,434 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:22:59,434 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:22:59,437 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:22:59,439 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:22:59,440 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:22:59,452 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:22:59,452 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:22:59,453 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:22:59,453 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:22:59,453 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:22:59,454 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:22:59,455 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:22:59,460 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ff1e83e-220c-4c14-837f-f2a48e9ebb19/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-11-20 12:22:59,498 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:22:59,499 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:22:59,500 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:22:59,500 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:22:59,501 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:22:59,502 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:22:59,502 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:22:59,502 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:22:59,503 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:22:59,503 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:22:59,504 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:22:59,504 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:22:59,505 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:22:59,505 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:22:59,505 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 12:22:59,505 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-20 12:22:59,506 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-20 12:22:59,506 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:22:59,506 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:22:59,506 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:22:59,506 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:22:59,507 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:22:59,507 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:22:59,507 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:22:59,507 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:22:59,508 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:22:59,508 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:22:59,508 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-20 12:22:59,508 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-20 12:22:59,508 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:22:59,509 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:22:59,509 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:22:59,509 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-20 12:22:59,509 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_1ff1e83e-220c-4c14-837f-f2a48e9ebb19/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ff1e83e-220c-4c14-837f-f2a48e9ebb19/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6063bfeeaa4a025ac67d1a7a9b5cc20b489e34fc9db0d4dd9fcdda86c75b9c5e [2022-11-20 12:22:59,891 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:22:59,924 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:22:59,927 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:22:59,928 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:22:59,929 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:22:59,930 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ff1e83e-220c-4c14-837f-f2a48e9ebb19/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/ldv-validator-v0.6/linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point.cil.out.i [2022-11-20 12:23:02,960 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:23:03,566 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:23:03,567 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ff1e83e-220c-4c14-837f-f2a48e9ebb19/sv-benchmarks/c/ldv-validator-v0.6/linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point.cil.out.i [2022-11-20 12:23:03,618 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ff1e83e-220c-4c14-837f-f2a48e9ebb19/bin/uautomizer-ug76WZFUDN/data/1e936af8b/1cea8a6ad3834057841d4a6973150429/FLAG33d15cb8d [2022-11-20 12:23:03,639 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ff1e83e-220c-4c14-837f-f2a48e9ebb19/bin/uautomizer-ug76WZFUDN/data/1e936af8b/1cea8a6ad3834057841d4a6973150429 [2022-11-20 12:23:03,642 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:23:03,643 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:23:03,645 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:23:03,645 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:23:03,649 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:23:03,650 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:23:03" (1/1) ... [2022-11-20 12:23:03,651 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@719532db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:23:03, skipping insertion in model container [2022-11-20 12:23:03,652 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:23:03" (1/1) ... [2022-11-20 12:23:03,659 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:23:03,786 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:23:04,398 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_1ff1e83e-220c-4c14-837f-f2a48e9ebb19/sv-benchmarks/c/ldv-validator-v0.6/linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point.cil.out.i[139152,139165] [2022-11-20 12:23:05,233 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:23:05,280 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-20 12:23:05,342 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:23:05,448 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_1ff1e83e-220c-4c14-837f-f2a48e9ebb19/sv-benchmarks/c/ldv-validator-v0.6/linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point.cil.out.i[139152,139165] [2022-11-20 12:23:05,615 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:23:05,624 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:23:05,735 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_1ff1e83e-220c-4c14-837f-f2a48e9ebb19/sv-benchmarks/c/ldv-validator-v0.6/linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point.cil.out.i[139152,139165] [2022-11-20 12:23:06,000 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:23:06,136 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:23:06,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:23:06 WrapperNode [2022-11-20 12:23:06,137 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:23:06,138 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:23:06,138 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:23:06,138 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:23:06,147 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:23:06" (1/1) ... [2022-11-20 12:23:06,233 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:23:06" (1/1) ... [2022-11-20 12:23:06,365 INFO L138 Inliner]: procedures = 197, calls = 828, calls flagged for inlining = 92, calls inlined = 90, statements flattened = 3054 [2022-11-20 12:23:06,365 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:23:06,366 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:23:06,366 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:23:06,367 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:23:06,376 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:23:06" (1/1) ... [2022-11-20 12:23:06,377 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:23:06" (1/1) ... [2022-11-20 12:23:06,393 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:23:06" (1/1) ... [2022-11-20 12:23:06,393 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:23:06" (1/1) ... [2022-11-20 12:23:06,466 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:23:06" (1/1) ... [2022-11-20 12:23:06,545 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:23:06" (1/1) ... [2022-11-20 12:23:06,559 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:23:06" (1/1) ... [2022-11-20 12:23:06,577 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:23:06" (1/1) ... [2022-11-20 12:23:06,611 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:23:06,611 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:23:06,612 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:23:06,612 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:23:06,613 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:23:06" (1/1) ... [2022-11-20 12:23:06,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:23:06,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ff1e83e-220c-4c14-837f-f2a48e9ebb19/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:23:06,653 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ff1e83e-220c-4c14-837f-f2a48e9ebb19/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 12:23:06,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ff1e83e-220c-4c14-837f-f2a48e9ebb19/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 12:23:06,703 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int_nonpositive [2022-11-20 12:23:06,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int_nonpositive [2022-11-20 12:23:06,703 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-11-20 12:23:06,703 INFO L130 BoogieDeclarations]: Found specification of procedure sl_tx_timeout [2022-11-20 12:23:06,703 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_tx_timeout [2022-11-20 12:23:06,703 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-11-20 12:23:06,704 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2022-11-20 12:23:06,704 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-20 12:23:06,704 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-20 12:23:06,704 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-20 12:23:06,704 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-20 12:23:06,704 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-20 12:23:06,705 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-11-20 12:23:06,705 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-11-20 12:23:06,705 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-20 12:23:06,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-20 12:23:06,705 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_unlock [2022-11-20 12:23:06,706 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_unlock [2022-11-20 12:23:06,706 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-20 12:23:06,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-20 12:23:06,706 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-20 12:23:06,706 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-20 12:23:06,707 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-20 12:23:06,707 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-20 12:23:06,707 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-20 12:23:06,707 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-20 12:23:06,708 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2022-11-20 12:23:06,708 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2022-11-20 12:23:06,708 INFO L130 BoogieDeclarations]: Found specification of procedure sl_bump [2022-11-20 12:23:06,709 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_bump [2022-11-20 12:23:06,710 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-20 12:23:06,710 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-20 12:23:06,710 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 12:23:06,710 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-20 12:23:06,711 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-20 12:23:06,711 INFO L130 BoogieDeclarations]: Found specification of procedure sl_get_stats64 [2022-11-20 12:23:06,711 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_get_stats64 [2022-11-20 12:23:06,711 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 12:23:06,711 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2022-11-20 12:23:06,712 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2022-11-20 12:23:06,712 INFO L130 BoogieDeclarations]: Found specification of procedure sl_ioctl [2022-11-20 12:23:06,712 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_ioctl [2022-11-20 12:23:06,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-11-20 12:23:06,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-11-20 12:23:06,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2022-11-20 12:23:06,712 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 12:23:06,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-20 12:23:06,713 INFO L130 BoogieDeclarations]: Found specification of procedure netif_queue_stopped [2022-11-20 12:23:06,713 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_queue_stopped [2022-11-20 12:23:06,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-20 12:23:06,714 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-11-20 12:23:06,714 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-11-20 12:23:06,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-20 12:23:06,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-11-20 12:23:06,715 INFO L130 BoogieDeclarations]: Found specification of procedure slip_hangup [2022-11-20 12:23:06,715 INFO L138 BoogieDeclarations]: Found implementation of procedure slip_hangup [2022-11-20 12:23:06,715 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-20 12:23:06,716 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-20 12:23:06,716 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-20 12:23:06,716 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-20 12:23:06,716 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-20 12:23:06,717 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-20 12:23:06,717 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-20 12:23:06,717 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-20 12:23:06,717 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2022-11-20 12:23:06,717 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2022-11-20 12:23:06,717 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-20 12:23:06,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-20 12:23:06,718 INFO L130 BoogieDeclarations]: Found specification of procedure sl_unlock [2022-11-20 12:23:06,718 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_unlock [2022-11-20 12:23:06,718 INFO L130 BoogieDeclarations]: Found specification of procedure activate_pending_timer_1 [2022-11-20 12:23:06,718 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_pending_timer_1 [2022-11-20 12:23:06,718 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-11-20 12:23:06,718 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-11-20 12:23:06,718 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2022-11-20 12:23:06,719 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2022-11-20 12:23:06,719 INFO L130 BoogieDeclarations]: Found specification of procedure slhc_free [2022-11-20 12:23:06,719 INFO L138 BoogieDeclarations]: Found implementation of procedure slhc_free [2022-11-20 12:23:06,720 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-20 12:23:06,720 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-20 12:23:06,720 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-20 12:23:06,720 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-20 12:23:06,721 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-20 12:23:06,721 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-20 12:23:06,721 INFO L130 BoogieDeclarations]: Found specification of procedure sl_free_bufs [2022-11-20 12:23:06,721 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_free_bufs [2022-11-20 12:23:06,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2022-11-20 12:23:06,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2022-11-20 12:23:06,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-11-20 12:23:06,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2022-11-20 12:23:06,722 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-20 12:23:06,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-20 12:23:06,723 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 12:23:06,724 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_timer_1 [2022-11-20 12:23:06,724 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_timer_1 [2022-11-20 12:23:06,724 INFO L130 BoogieDeclarations]: Found specification of procedure slip_ioctl [2022-11-20 12:23:06,724 INFO L138 BoogieDeclarations]: Found implementation of procedure slip_ioctl [2022-11-20 12:23:06,724 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 12:23:06,724 INFO L130 BoogieDeclarations]: Found specification of procedure slip_close [2022-11-20 12:23:06,724 INFO L138 BoogieDeclarations]: Found implementation of procedure slip_close [2022-11-20 12:23:06,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 12:23:06,725 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-20 12:23:06,725 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2022-11-20 12:23:06,725 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2022-11-20 12:23:06,725 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_1 [2022-11-20 12:23:06,726 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_1 [2022-11-20 12:23:06,726 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2022-11-20 12:23:06,726 INFO L130 BoogieDeclarations]: Found specification of procedure slip_compat_ioctl [2022-11-20 12:23:06,726 INFO L138 BoogieDeclarations]: Found implementation of procedure slip_compat_ioctl [2022-11-20 12:23:06,726 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-11-20 12:23:06,727 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-11-20 12:23:06,728 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~C_INT~TO~C_INT [2022-11-20 12:23:06,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~C_INT~TO~C_INT [2022-11-20 12:23:06,731 INFO L130 BoogieDeclarations]: Found specification of procedure tty_hangup [2022-11-20 12:23:06,731 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_hangup [2022-11-20 12:23:06,731 INFO L130 BoogieDeclarations]: Found specification of procedure tty_devnum [2022-11-20 12:23:06,732 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_devnum [2022-11-20 12:23:06,732 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-20 12:23:06,732 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-20 12:23:06,732 INFO L130 BoogieDeclarations]: Found specification of procedure sl_change_mtu [2022-11-20 12:23:06,732 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_change_mtu [2022-11-20 12:23:06,733 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~C_ULONG~TO~VOID [2022-11-20 12:23:06,733 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~C_ULONG~TO~VOID [2022-11-20 12:23:06,733 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-20 12:23:06,733 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-20 12:23:06,734 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2022-11-20 12:23:06,734 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_clear_bit [2022-11-20 12:23:06,734 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_clear_bit [2022-11-20 12:23:06,734 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2022-11-20 12:23:06,734 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2022-11-20 12:23:06,735 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:23:06,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:23:06,735 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2022-11-20 12:23:06,735 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2022-11-20 12:23:07,334 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:23:07,337 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:23:07,779 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-20 12:23:28,627 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:23:28,651 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:23:28,653 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-20 12:23:28,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:23:28 BoogieIcfgContainer [2022-11-20 12:23:28,658 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:23:28,662 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 12:23:28,662 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 12:23:28,666 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 12:23:28,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:23:03" (1/3) ... [2022-11-20 12:23:28,668 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63590e2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:23:28, skipping insertion in model container [2022-11-20 12:23:28,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:23:06" (2/3) ... [2022-11-20 12:23:28,670 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63590e2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:23:28, skipping insertion in model container [2022-11-20 12:23:28,670 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:23:28" (3/3) ... [2022-11-20 12:23:28,672 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point.cil.out.i [2022-11-20 12:23:28,693 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 12:23:28,693 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 12:23:28,775 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:23:28,782 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;@6293ed74, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:23:28,782 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 12:23:28,791 INFO L276 IsEmpty]: Start isEmpty. Operand has 1083 states, 801 states have (on average 1.428214731585518) internal successors, (1144), 834 states have internal predecessors, (1144), 229 states have call successors, (229), 52 states have call predecessors, (229), 51 states have return successors, (224), 222 states have call predecessors, (224), 224 states have call successors, (224) [2022-11-20 12:23:28,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-20 12:23:28,809 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:23:28,810 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:23:28,811 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:23:28,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:23:28,816 INFO L85 PathProgramCache]: Analyzing trace with hash 127218284, now seen corresponding path program 1 times [2022-11-20 12:23:28,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:23:28,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1106839504] [2022-11-20 12:23:28,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:23:28,832 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:23:28,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ff1e83e-220c-4c14-837f-f2a48e9ebb19/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:23:28,839 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ff1e83e-220c-4c14-837f-f2a48e9ebb19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:23:28,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ff1e83e-220c-4c14-837f-f2a48e9ebb19/bin/uautomizer-ug76WZFUDN/mathsat -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 12:23:29,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:29,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:23:29,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:23:29,512 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-11-20 12:23:29,513 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:23:29,513 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:23:29,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1106839504] [2022-11-20 12:23:29,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1106839504] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:23:29,515 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:23:29,515 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:23:29,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569772117] [2022-11-20 12:23:29,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:23:29,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:23:29,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:23:29,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:23:29,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:23:29,557 INFO L87 Difference]: Start difference. First operand has 1083 states, 801 states have (on average 1.428214731585518) internal successors, (1144), 834 states have internal predecessors, (1144), 229 states have call successors, (229), 52 states have call predecessors, (229), 51 states have return successors, (224), 222 states have call predecessors, (224), 224 states have call successors, (224) Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-20 12:23:30,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:23:30,168 INFO L93 Difference]: Finished difference Result 2757 states and 4067 transitions. [2022-11-20 12:23:30,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:23:30,171 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 63 [2022-11-20 12:23:30,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:23:30,197 INFO L225 Difference]: With dead ends: 2757 [2022-11-20 12:23:30,198 INFO L226 Difference]: Without dead ends: 1594 [2022-11-20 12:23:30,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:23:30,213 INFO L413 NwaCegarLoop]: 1746 mSDtfsCounter, 857 mSDsluCounter, 1536 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 857 SdHoareTripleChecker+Valid, 3282 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:23:30,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [857 Valid, 3282 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 12:23:30,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1594 states. [2022-11-20 12:23:30,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1594 to 1594. [2022-11-20 12:23:30,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1594 states, 1172 states have (on average 1.401877133105802) internal successors, (1643), 1205 states have internal predecessors, (1643), 333 states have call successors, (333), 89 states have call predecessors, (333), 88 states have return successors, (332), 329 states have call predecessors, (332), 332 states have call successors, (332) [2022-11-20 12:23:30,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1594 states to 1594 states and 2308 transitions. [2022-11-20 12:23:30,439 INFO L78 Accepts]: Start accepts. Automaton has 1594 states and 2308 transitions. Word has length 63 [2022-11-20 12:23:30,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:23:30,440 INFO L495 AbstractCegarLoop]: Abstraction has 1594 states and 2308 transitions. [2022-11-20 12:23:30,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-20 12:23:30,441 INFO L276 IsEmpty]: Start isEmpty. Operand 1594 states and 2308 transitions. [2022-11-20 12:23:30,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-11-20 12:23:30,456 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:23:30,456 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 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] [2022-11-20 12:23:30,475 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ff1e83e-220c-4c14-837f-f2a48e9ebb19/bin/uautomizer-ug76WZFUDN/mathsat -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 12:23:30,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ff1e83e-220c-4c14-837f-f2a48e9ebb19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:23:30,672 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:23:30,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:23:30,673 INFO L85 PathProgramCache]: Analyzing trace with hash -1793418018, now seen corresponding path program 1 times [2022-11-20 12:23:30,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:23:30,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1536851536] [2022-11-20 12:23:30,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:23:30,675 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:23:30,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ff1e83e-220c-4c14-837f-f2a48e9ebb19/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:23:30,676 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ff1e83e-220c-4c14-837f-f2a48e9ebb19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:23:30,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ff1e83e-220c-4c14-837f-f2a48e9ebb19/bin/uautomizer-ug76WZFUDN/mathsat -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 12:23:31,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:31,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 525 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:23:31,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:23:31,706 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-11-20 12:23:31,706 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:23:31,707 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:23:31,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1536851536] [2022-11-20 12:23:31,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1536851536] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:23:31,709 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:23:31,709 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:23:31,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519913889] [2022-11-20 12:23:31,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:23:31,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:23:31,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:23:31,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:23:31,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:23:31,714 INFO L87 Difference]: Start difference. First operand 1594 states and 2308 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 2 states have internal predecessors, (60), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-20 12:23:31,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:23:31,887 INFO L93 Difference]: Finished difference Result 3164 states and 4584 transitions. [2022-11-20 12:23:31,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:23:31,888 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 2 states have internal predecessors, (60), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 104 [2022-11-20 12:23:31,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:23:31,901 INFO L225 Difference]: With dead ends: 3164 [2022-11-20 12:23:31,901 INFO L226 Difference]: Without dead ends: 1594 [2022-11-20 12:23:31,911 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:23:31,912 INFO L413 NwaCegarLoop]: 1520 mSDtfsCounter, 1493 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1493 SdHoareTripleChecker+Valid, 1520 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:23:31,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1493 Valid, 1520 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:23:31,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1594 states. [2022-11-20 12:23:32,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1594 to 1594. [2022-11-20 12:23:32,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1594 states, 1172 states have (on average 1.4001706484641638) internal successors, (1641), 1205 states have internal predecessors, (1641), 333 states have call successors, (333), 89 states have call predecessors, (333), 88 states have return successors, (332), 329 states have call predecessors, (332), 332 states have call successors, (332) [2022-11-20 12:23:32,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1594 states to 1594 states and 2306 transitions. [2022-11-20 12:23:32,119 INFO L78 Accepts]: Start accepts. Automaton has 1594 states and 2306 transitions. Word has length 104 [2022-11-20 12:23:32,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:23:32,122 INFO L495 AbstractCegarLoop]: Abstraction has 1594 states and 2306 transitions. [2022-11-20 12:23:32,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 2 states have internal predecessors, (60), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-20 12:23:32,123 INFO L276 IsEmpty]: Start isEmpty. Operand 1594 states and 2306 transitions. [2022-11-20 12:23:32,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-11-20 12:23:32,129 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:23:32,130 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 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] [2022-11-20 12:23:32,152 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ff1e83e-220c-4c14-837f-f2a48e9ebb19/bin/uautomizer-ug76WZFUDN/mathsat -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 12:23:32,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ff1e83e-220c-4c14-837f-f2a48e9ebb19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:23:32,347 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:23:32,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:23:32,348 INFO L85 PathProgramCache]: Analyzing trace with hash 472963168, now seen corresponding path program 1 times [2022-11-20 12:23:32,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:23:32,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1277724693] [2022-11-20 12:23:32,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:23:32,349 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:23:32,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ff1e83e-220c-4c14-837f-f2a48e9ebb19/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:23:32,355 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ff1e83e-220c-4c14-837f-f2a48e9ebb19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:23:32,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ff1e83e-220c-4c14-837f-f2a48e9ebb19/bin/uautomizer-ug76WZFUDN/mathsat -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 12:23:32,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:32,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 12:23:32,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:23:32,998 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-11-20 12:23:32,998 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:23:32,999 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:23:32,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1277724693] [2022-11-20 12:23:32,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1277724693] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:23:32,999 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:23:32,999 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:23:32,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186343670] [2022-11-20 12:23:32,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:23:33,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:23:33,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:23:33,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:23:33,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:23:33,001 INFO L87 Difference]: Start difference. First operand 1594 states and 2306 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-20 12:23:33,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:23:33,253 INFO L93 Difference]: Finished difference Result 3168 states and 4584 transitions. [2022-11-20 12:23:33,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:23:33,254 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 104 [2022-11-20 12:23:33,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:23:33,265 INFO L225 Difference]: With dead ends: 3168 [2022-11-20 12:23:33,265 INFO L226 Difference]: Without dead ends: 1594 [2022-11-20 12:23:33,272 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:23:33,273 INFO L413 NwaCegarLoop]: 1527 mSDtfsCounter, 1 mSDsluCounter, 3047 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4574 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:23:33,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4574 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:23:33,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1594 states. [2022-11-20 12:23:33,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1594 to 1594. [2022-11-20 12:23:33,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1594 states, 1172 states have (on average 1.3984641638225257) internal successors, (1639), 1205 states have internal predecessors, (1639), 333 states have call successors, (333), 89 states have call predecessors, (333), 88 states have return successors, (332), 329 states have call predecessors, (332), 332 states have call successors, (332) [2022-11-20 12:23:33,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1594 states to 1594 states and 2304 transitions. [2022-11-20 12:23:33,421 INFO L78 Accepts]: Start accepts. Automaton has 1594 states and 2304 transitions. Word has length 104 [2022-11-20 12:23:33,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:23:33,421 INFO L495 AbstractCegarLoop]: Abstraction has 1594 states and 2304 transitions. [2022-11-20 12:23:33,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-20 12:23:33,422 INFO L276 IsEmpty]: Start isEmpty. Operand 1594 states and 2304 transitions. [2022-11-20 12:23:33,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-11-20 12:23:33,426 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:23:33,426 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 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] [2022-11-20 12:23:33,448 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ff1e83e-220c-4c14-837f-f2a48e9ebb19/bin/uautomizer-ug76WZFUDN/mathsat -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 12:23:33,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ff1e83e-220c-4c14-837f-f2a48e9ebb19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:23:33,648 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:23:33,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:23:33,649 INFO L85 PathProgramCache]: Analyzing trace with hash -1028710323, now seen corresponding path program 1 times [2022-11-20 12:23:33,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:23:33,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1827260001] [2022-11-20 12:23:33,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:23:33,650 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:23:33,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ff1e83e-220c-4c14-837f-f2a48e9ebb19/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:23:33,652 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ff1e83e-220c-4c14-837f-f2a48e9ebb19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:23:33,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ff1e83e-220c-4c14-837f-f2a48e9ebb19/bin/uautomizer-ug76WZFUDN/mathsat -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 12:23:34,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:34,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-20 12:23:34,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:23:34,674 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-11-20 12:23:34,674 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:23:34,674 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:23:34,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1827260001] [2022-11-20 12:23:34,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1827260001] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:23:34,675 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:23:34,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 12:23:34,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698870750] [2022-11-20 12:23:34,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:23:34,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 12:23:34,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:23:34,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 12:23:34,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:23:34,677 INFO L87 Difference]: Start difference. First operand 1594 states and 2304 transitions. Second operand has 9 states, 9 states have (on average 7.0) internal successors, (63), 7 states have internal predecessors, (63), 2 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 4 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-20 12:23:36,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:23:36,447 INFO L93 Difference]: Finished difference Result 3729 states and 5375 transitions. [2022-11-20 12:23:36,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 12:23:36,448 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 7 states have internal predecessors, (63), 2 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 4 states have call predecessors, (11), 2 states have call successors, (11) Word has length 107 [2022-11-20 12:23:36,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:23:36,462 INFO L225 Difference]: With dead ends: 3729 [2022-11-20 12:23:36,463 INFO L226 Difference]: Without dead ends: 2151 [2022-11-20 12:23:36,469 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2022-11-20 12:23:36,470 INFO L413 NwaCegarLoop]: 1666 mSDtfsCounter, 799 mSDsluCounter, 11470 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 801 SdHoareTripleChecker+Valid, 13136 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:23:36,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [801 Valid, 13136 Invalid, 61 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-20 12:23:36,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2151 states. [2022-11-20 12:23:36,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2151 to 2149. [2022-11-20 12:23:36,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2149 states, 1570 states have (on average 1.3878980891719745) internal successors, (2179), 1615 states have internal predecessors, (2179), 447 states have call successors, (447), 126 states have call predecessors, (447), 131 states have return successors, (464), 444 states have call predecessors, (464), 446 states have call successors, (464) [2022-11-20 12:23:36,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2149 states to 2149 states and 3090 transitions. [2022-11-20 12:23:36,669 INFO L78 Accepts]: Start accepts. Automaton has 2149 states and 3090 transitions. Word has length 107 [2022-11-20 12:23:36,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:23:36,669 INFO L495 AbstractCegarLoop]: Abstraction has 2149 states and 3090 transitions. [2022-11-20 12:23:36,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 7 states have internal predecessors, (63), 2 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 4 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-20 12:23:36,670 INFO L276 IsEmpty]: Start isEmpty. Operand 2149 states and 3090 transitions. [2022-11-20 12:23:36,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-20 12:23:36,676 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:23:36,676 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 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] [2022-11-20 12:23:36,699 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ff1e83e-220c-4c14-837f-f2a48e9ebb19/bin/uautomizer-ug76WZFUDN/mathsat -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 12:23:36,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ff1e83e-220c-4c14-837f-f2a48e9ebb19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:23:36,892 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:23:36,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:23:36,892 INFO L85 PathProgramCache]: Analyzing trace with hash 413444233, now seen corresponding path program 1 times [2022-11-20 12:23:36,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:23:36,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2063911059] [2022-11-20 12:23:36,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:23:36,894 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:23:36,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ff1e83e-220c-4c14-837f-f2a48e9ebb19/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:23:36,896 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ff1e83e-220c-4c14-837f-f2a48e9ebb19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:23:36,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ff1e83e-220c-4c14-837f-f2a48e9ebb19/bin/uautomizer-ug76WZFUDN/mathsat -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 12:23:37,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:37,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 549 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 12:23:37,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:23:37,534 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2022-11-20 12:23:37,535 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:23:37,535 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:23:37,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2063911059] [2022-11-20 12:23:37,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2063911059] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:23:37,535 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:23:37,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:23:37,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536854873] [2022-11-20 12:23:37,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:23:37,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:23:37,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:23:37,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:23:37,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:23:37,537 INFO L87 Difference]: Start difference. First operand 2149 states and 3090 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2022-11-20 12:23:38,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:23:38,259 INFO L93 Difference]: Finished difference Result 2740 states and 4037 transitions. [2022-11-20 12:23:38,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:23:38,260 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 113 [2022-11-20 12:23:38,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:23:38,278 INFO L225 Difference]: With dead ends: 2740 [2022-11-20 12:23:38,278 INFO L226 Difference]: Without dead ends: 2737 [2022-11-20 12:23:38,280 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:23:38,282 INFO L413 NwaCegarLoop]: 2176 mSDtfsCounter, 791 mSDsluCounter, 3416 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 822 SdHoareTripleChecker+Valid, 5592 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:23:38,282 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [822 Valid, 5592 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 12:23:38,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2737 states. [2022-11-20 12:23:38,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2737 to 2151. [2022-11-20 12:23:38,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2151 states, 1572 states have (on average 1.3874045801526718) internal successors, (2181), 1617 states have internal predecessors, (2181), 447 states have call successors, (447), 126 states have call predecessors, (447), 131 states have return successors, (464), 444 states have call predecessors, (464), 446 states have call successors, (464) [2022-11-20 12:23:38,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2151 states to 2151 states and 3092 transitions. [2022-11-20 12:23:38,487 INFO L78 Accepts]: Start accepts. Automaton has 2151 states and 3092 transitions. Word has length 113 [2022-11-20 12:23:38,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:23:38,489 INFO L495 AbstractCegarLoop]: Abstraction has 2151 states and 3092 transitions. [2022-11-20 12:23:38,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2022-11-20 12:23:38,489 INFO L276 IsEmpty]: Start isEmpty. Operand 2151 states and 3092 transitions. [2022-11-20 12:23:38,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-11-20 12:23:38,496 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:23:38,496 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 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] [2022-11-20 12:23:38,519 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ff1e83e-220c-4c14-837f-f2a48e9ebb19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-20 12:23:38,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ff1e83e-220c-4c14-837f-f2a48e9ebb19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:23:38,714 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:23:38,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:23:38,714 INFO L85 PathProgramCache]: Analyzing trace with hash -353684413, now seen corresponding path program 1 times [2022-11-20 12:23:38,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:23:38,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [655364858] [2022-11-20 12:23:38,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:23:38,716 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:23:38,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ff1e83e-220c-4c14-837f-f2a48e9ebb19/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:23:38,717 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ff1e83e-220c-4c14-837f-f2a48e9ebb19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:23:38,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ff1e83e-220c-4c14-837f-f2a48e9ebb19/bin/uautomizer-ug76WZFUDN/mathsat -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 12:23:39,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:39,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 554 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 12:23:39,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:23:39,333 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2022-11-20 12:23:39,334 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:23:39,334 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:23:39,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [655364858] [2022-11-20 12:23:39,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [655364858] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:23:39,334 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:23:39,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:23:39,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947717499] [2022-11-20 12:23:39,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:23:39,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:23:39,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:23:39,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:23:39,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:23:39,336 INFO L87 Difference]: Start difference. First operand 2151 states and 3092 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2022-11-20 12:23:40,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:23:40,019 INFO L93 Difference]: Finished difference Result 2743 states and 4040 transitions. [2022-11-20 12:23:40,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:23:40,020 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 114 [2022-11-20 12:23:40,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:23:40,038 INFO L225 Difference]: With dead ends: 2743 [2022-11-20 12:23:40,038 INFO L226 Difference]: Without dead ends: 2740 [2022-11-20 12:23:40,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:23:40,041 INFO L413 NwaCegarLoop]: 2184 mSDtfsCounter, 791 mSDsluCounter, 3419 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 822 SdHoareTripleChecker+Valid, 5603 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:23:40,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [822 Valid, 5603 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 12:23:40,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2740 states. [2022-11-20 12:23:40,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2740 to 2151. [2022-11-20 12:23:40,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2151 states, 1572 states have (on average 1.3874045801526718) internal successors, (2181), 1617 states have internal predecessors, (2181), 447 states have call successors, (447), 126 states have call predecessors, (447), 131 states have return successors, (464), 444 states have call predecessors, (464), 446 states have call successors, (464) [2022-11-20 12:23:40,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2151 states to 2151 states and 3092 transitions. [2022-11-20 12:23:40,264 INFO L78 Accepts]: Start accepts. Automaton has 2151 states and 3092 transitions. Word has length 114 [2022-11-20 12:23:40,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:23:40,264 INFO L495 AbstractCegarLoop]: Abstraction has 2151 states and 3092 transitions. [2022-11-20 12:23:40,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2022-11-20 12:23:40,265 INFO L276 IsEmpty]: Start isEmpty. Operand 2151 states and 3092 transitions. [2022-11-20 12:23:40,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-20 12:23:40,272 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:23:40,273 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 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] [2022-11-20 12:23:40,292 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ff1e83e-220c-4c14-837f-f2a48e9ebb19/bin/uautomizer-ug76WZFUDN/mathsat -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 12:23:40,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ff1e83e-220c-4c14-837f-f2a48e9ebb19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:23:40,491 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:23:40,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:23:40,492 INFO L85 PathProgramCache]: Analyzing trace with hash -2133220354, now seen corresponding path program 1 times [2022-11-20 12:23:40,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:23:40,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1707730401] [2022-11-20 12:23:40,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:23:40,492 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:23:40,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ff1e83e-220c-4c14-837f-f2a48e9ebb19/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:23:40,493 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ff1e83e-220c-4c14-837f-f2a48e9ebb19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:23:40,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ff1e83e-220c-4c14-837f-f2a48e9ebb19/bin/uautomizer-ug76WZFUDN/mathsat -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 12:23:40,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:41,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 569 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 12:23:41,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:23:41,712 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2022-11-20 12:23:41,712 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:23:41,712 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:23:41,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1707730401] [2022-11-20 12:23:41,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1707730401] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:23:41,713 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:23:41,713 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:23:41,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703295498] [2022-11-20 12:23:41,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:23:41,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:23:41,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:23:41,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:23:41,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:23:41,714 INFO L87 Difference]: Start difference. First operand 2151 states and 3092 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-20 12:23:45,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:23:45,534 INFO L93 Difference]: Finished difference Result 4324 states and 6334 transitions. [2022-11-20 12:23:45,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:23:45,535 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 123 [2022-11-20 12:23:45,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:23:45,553 INFO L225 Difference]: With dead ends: 4324 [2022-11-20 12:23:45,553 INFO L226 Difference]: Without dead ends: 2740 [2022-11-20 12:23:45,561 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:23:45,561 INFO L413 NwaCegarLoop]: 1852 mSDtfsCounter, 1916 mSDsluCounter, 1082 mSDsCounter, 0 mSdLazyCounter, 617 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2017 SdHoareTripleChecker+Valid, 2934 SdHoareTripleChecker+Invalid, 659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:23:45,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2017 Valid, 2934 Invalid, 659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 617 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-11-20 12:23:45,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2740 states. [2022-11-20 12:23:45,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2740 to 2152. [2022-11-20 12:23:45,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2152 states, 1573 states have (on average 1.3871582962492053) internal successors, (2182), 1618 states have internal predecessors, (2182), 447 states have call successors, (447), 126 states have call predecessors, (447), 131 states have return successors, (464), 444 states have call predecessors, (464), 446 states have call successors, (464) [2022-11-20 12:23:45,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2152 states to 2152 states and 3093 transitions. [2022-11-20 12:23:45,785 INFO L78 Accepts]: Start accepts. Automaton has 2152 states and 3093 transitions. Word has length 123 [2022-11-20 12:23:45,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:23:45,785 INFO L495 AbstractCegarLoop]: Abstraction has 2152 states and 3093 transitions. [2022-11-20 12:23:45,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-20 12:23:45,786 INFO L276 IsEmpty]: Start isEmpty. Operand 2152 states and 3093 transitions. [2022-11-20 12:23:45,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-11-20 12:23:45,793 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:23:45,794 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:23:45,816 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ff1e83e-220c-4c14-837f-f2a48e9ebb19/bin/uautomizer-ug76WZFUDN/mathsat -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 12:23:46,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ff1e83e-220c-4c14-837f-f2a48e9ebb19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:23:46,007 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:23:46,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:23:46,008 INFO L85 PathProgramCache]: Analyzing trace with hash -873653155, now seen corresponding path program 1 times [2022-11-20 12:23:46,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:23:46,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1471868124] [2022-11-20 12:23:46,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:23:46,009 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:23:46,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ff1e83e-220c-4c14-837f-f2a48e9ebb19/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:23:46,010 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ff1e83e-220c-4c14-837f-f2a48e9ebb19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:23:46,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ff1e83e-220c-4c14-837f-f2a48e9ebb19/bin/uautomizer-ug76WZFUDN/mathsat -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 12:23:46,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:46,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 572 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 12:23:46,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:23:46,655 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2022-11-20 12:23:46,656 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:23:46,656 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:23:46,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1471868124] [2022-11-20 12:23:46,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1471868124] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:23:46,656 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:23:46,656 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:23:46,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146614401] [2022-11-20 12:23:46,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:23:46,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:23:46,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:23:46,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:23:46,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:23:46,658 INFO L87 Difference]: Start difference. First operand 2152 states and 3093 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-20 12:23:47,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:23:47,575 INFO L93 Difference]: Finished difference Result 2749 states and 4048 transitions. [2022-11-20 12:23:47,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:23:47,576 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 125 [2022-11-20 12:23:47,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:23:47,592 INFO L225 Difference]: With dead ends: 2749 [2022-11-20 12:23:47,592 INFO L226 Difference]: Without dead ends: 2746 [2022-11-20 12:23:47,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:23:47,594 INFO L413 NwaCegarLoop]: 2105 mSDtfsCounter, 1113 mSDsluCounter, 5149 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 211 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1144 SdHoareTripleChecker+Valid, 7254 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 211 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:23:47,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1144 Valid, 7254 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [211 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 12:23:47,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2746 states. [2022-11-20 12:23:47,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2746 to 2154. [2022-11-20 12:23:47,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2154 states, 1574 states have (on average 1.3869123252858957) internal successors, (2183), 1619 states have internal predecessors, (2183), 448 states have call successors, (448), 126 states have call predecessors, (448), 131 states have return successors, (465), 445 states have call predecessors, (465), 447 states have call successors, (465) [2022-11-20 12:23:47,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2154 states to 2154 states and 3096 transitions. [2022-11-20 12:23:47,890 INFO L78 Accepts]: Start accepts. Automaton has 2154 states and 3096 transitions. Word has length 125 [2022-11-20 12:23:47,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:23:47,891 INFO L495 AbstractCegarLoop]: Abstraction has 2154 states and 3096 transitions. [2022-11-20 12:23:47,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-20 12:23:47,892 INFO L276 IsEmpty]: Start isEmpty. Operand 2154 states and 3096 transitions. [2022-11-20 12:23:47,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-11-20 12:23:47,903 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:23:47,904 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 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] [2022-11-20 12:23:47,927 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ff1e83e-220c-4c14-837f-f2a48e9ebb19/bin/uautomizer-ug76WZFUDN/mathsat -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 12:23:48,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ff1e83e-220c-4c14-837f-f2a48e9ebb19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:23:48,120 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:23:48,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:23:48,121 INFO L85 PathProgramCache]: Analyzing trace with hash -1193820731, now seen corresponding path program 1 times [2022-11-20 12:23:48,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:23:48,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1507919961] [2022-11-20 12:23:48,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:23:48,122 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 12:23:48,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ff1e83e-220c-4c14-837f-f2a48e9ebb19/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:23:48,123 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ff1e83e-220c-4c14-837f-f2a48e9ebb19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:23:48,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ff1e83e-220c-4c14-837f-f2a48e9ebb19/bin/uautomizer-ug76WZFUDN/mathsat -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 12:23:48,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:48,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 611 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-20 12:23:48,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:23:49,709 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-11-20 12:23:49,709 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:23:49,710 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:23:49,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1507919961] [2022-11-20 12:23:49,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1507919961] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:23:49,710 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:23:49,711 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 12:23:49,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528687204] [2022-11-20 12:23:49,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:23:49,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 12:23:49,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:23:49,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 12:23:49,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-11-20 12:23:49,713 INFO L87 Difference]: Start difference. First operand 2154 states and 3096 transitions. Second operand has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 9 states have internal predecessors, (83), 3 states have call successors, (15), 3 states have call predecessors, (15), 6 states have return successors, (14), 6 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-20 12:23:59,851 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 12:24:04,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:24:04,131 INFO L93 Difference]: Finished difference Result 3747 states and 5402 transitions. [2022-11-20 12:24:04,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-20 12:24:04,133 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 9 states have internal predecessors, (83), 3 states have call successors, (15), 3 states have call predecessors, (15), 6 states have return successors, (14), 6 states have call predecessors, (14), 3 states have call successors, (14) Word has length 133 [2022-11-20 12:24:04,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:24:04,146 INFO L225 Difference]: With dead ends: 3747 [2022-11-20 12:24:04,146 INFO L226 Difference]: Without dead ends: 2160 [2022-11-20 12:24:04,152 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=83, Invalid=517, Unknown=0, NotChecked=0, Total=600 [2022-11-20 12:24:04,153 INFO L413 NwaCegarLoop]: 2153 mSDtfsCounter, 1832 mSDsluCounter, 19626 mSDsCounter, 0 mSdLazyCounter, 1208 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1835 SdHoareTripleChecker+Valid, 21779 SdHoareTripleChecker+Invalid, 1416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 1208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.8s IncrementalHoareTripleChecker+Time [2022-11-20 12:24:04,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1835 Valid, 21779 Invalid, 1416 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [208 Valid, 1208 Invalid, 0 Unknown, 0 Unchecked, 12.8s Time] [2022-11-20 12:24:04,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2160 states. [2022-11-20 12:24:04,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2160 to 2154. [2022-11-20 12:24:04,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2154 states, 1574 states have (on average 1.386277001270648) internal successors, (2182), 1619 states have internal predecessors, (2182), 448 states have call successors, (448), 126 states have call predecessors, (448), 131 states have return successors, (465), 445 states have call predecessors, (465), 447 states have call successors, (465) [2022-11-20 12:24:04,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2154 states to 2154 states and 3095 transitions. [2022-11-20 12:24:04,455 INFO L78 Accepts]: Start accepts. Automaton has 2154 states and 3095 transitions. Word has length 133 [2022-11-20 12:24:04,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:24:04,456 INFO L495 AbstractCegarLoop]: Abstraction has 2154 states and 3095 transitions. [2022-11-20 12:24:04,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 9 states have internal predecessors, (83), 3 states have call successors, (15), 3 states have call predecessors, (15), 6 states have return successors, (14), 6 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-20 12:24:04,456 INFO L276 IsEmpty]: Start isEmpty. Operand 2154 states and 3095 transitions. [2022-11-20 12:24:04,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-11-20 12:24:04,466 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:24:04,466 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 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] [2022-11-20 12:24:04,490 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ff1e83e-220c-4c14-837f-f2a48e9ebb19/bin/uautomizer-ug76WZFUDN/mathsat -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 12:24:04,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ff1e83e-220c-4c14-837f-f2a48e9ebb19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:24:04,679 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:24:04,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:24:04,680 INFO L85 PathProgramCache]: Analyzing trace with hash 450561579, now seen corresponding path program 1 times [2022-11-20 12:24:04,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:24:04,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1722181565] [2022-11-20 12:24:04,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:24:04,681 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:24:04,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ff1e83e-220c-4c14-837f-f2a48e9ebb19/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:24:04,688 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ff1e83e-220c-4c14-837f-f2a48e9ebb19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:24:04,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ff1e83e-220c-4c14-837f-f2a48e9ebb19/bin/uautomizer-ug76WZFUDN/mathsat -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 12:24:05,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:24:05,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 614 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 12:24:05,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:24:05,925 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2022-11-20 12:24:05,926 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:24:05,926 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:24:05,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1722181565] [2022-11-20 12:24:05,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1722181565] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:24:05,926 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:24:05,926 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:24:05,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704606885] [2022-11-20 12:24:05,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:24:05,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:24:05,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:24:05,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:24:05,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:24:05,928 INFO L87 Difference]: Start difference. First operand 2154 states and 3095 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-20 12:24:09,363 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:24:11,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:24:11,354 INFO L93 Difference]: Finished difference Result 4332 states and 6342 transitions. [2022-11-20 12:24:11,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:24:11,355 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 135 [2022-11-20 12:24:11,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:24:11,370 INFO L225 Difference]: With dead ends: 4332 [2022-11-20 12:24:11,370 INFO L226 Difference]: Without dead ends: 2745 [2022-11-20 12:24:11,376 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:24:11,377 INFO L413 NwaCegarLoop]: 2064 mSDtfsCounter, 2009 mSDsluCounter, 1077 mSDsCounter, 0 mSdLazyCounter, 665 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2110 SdHoareTripleChecker+Valid, 3141 SdHoareTripleChecker+Invalid, 670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:24:11,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2110 Valid, 3141 Invalid, 670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 665 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-11-20 12:24:11,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2745 states. [2022-11-20 12:24:11,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2745 to 2158. [2022-11-20 12:24:11,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2158 states, 1578 states have (on average 1.3859315589353611) internal successors, (2187), 1623 states have internal predecessors, (2187), 448 states have call successors, (448), 126 states have call predecessors, (448), 131 states have return successors, (465), 445 states have call predecessors, (465), 447 states have call successors, (465) [2022-11-20 12:24:11,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2158 states to 2158 states and 3100 transitions. [2022-11-20 12:24:11,671 INFO L78 Accepts]: Start accepts. Automaton has 2158 states and 3100 transitions. Word has length 135 [2022-11-20 12:24:11,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:24:11,671 INFO L495 AbstractCegarLoop]: Abstraction has 2158 states and 3100 transitions. [2022-11-20 12:24:11,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-20 12:24:11,672 INFO L276 IsEmpty]: Start isEmpty. Operand 2158 states and 3100 transitions. [2022-11-20 12:24:11,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-11-20 12:24:11,682 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:24:11,682 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 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] [2022-11-20 12:24:11,701 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ff1e83e-220c-4c14-837f-f2a48e9ebb19/bin/uautomizer-ug76WZFUDN/mathsat -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 12:24:11,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ff1e83e-220c-4c14-837f-f2a48e9ebb19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:24:11,895 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:24:11,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:24:11,896 INFO L85 PathProgramCache]: Analyzing trace with hash -417873427, now seen corresponding path program 1 times [2022-11-20 12:24:11,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:24:11,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1147043501] [2022-11-20 12:24:11,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:24:11,897 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:24:11,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ff1e83e-220c-4c14-837f-f2a48e9ebb19/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:24:11,901 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ff1e83e-220c-4c14-837f-f2a48e9ebb19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:24:11,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ff1e83e-220c-4c14-837f-f2a48e9ebb19/bin/uautomizer-ug76WZFUDN/mathsat -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 12:24:12,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:24:12,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 619 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 12:24:12,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:24:13,067 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2022-11-20 12:24:13,067 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:24:13,579 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2022-11-20 12:24:13,579 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:24:13,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1147043501] [2022-11-20 12:24:13,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1147043501] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:24:13,579 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:24:13,579 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 8 [2022-11-20 12:24:13,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675446918] [2022-11-20 12:24:13,580 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:24:13,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:24:13,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:24:13,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:24:13,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:24:13,581 INFO L87 Difference]: Start difference. First operand 2158 states and 3100 transitions. Second operand has 8 states, 8 states have (on average 19.625) internal successors, (157), 8 states have internal predecessors, (157), 4 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) [2022-11-20 12:24:30,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:24:30,825 INFO L93 Difference]: Finished difference Result 6086 states and 9154 transitions. [2022-11-20 12:24:30,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:24:30,826 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 19.625) internal successors, (157), 8 states have internal predecessors, (157), 4 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) Word has length 138 [2022-11-20 12:24:30,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:24:30,847 INFO L225 Difference]: With dead ends: 6086 [2022-11-20 12:24:30,847 INFO L226 Difference]: Without dead ends: 4495 [2022-11-20 12:24:30,853 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 268 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2022-11-20 12:24:30,853 INFO L413 NwaCegarLoop]: 2912 mSDtfsCounter, 5137 mSDsluCounter, 5068 mSDsCounter, 0 mSdLazyCounter, 3151 mSolverCounterSat, 1149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5339 SdHoareTripleChecker+Valid, 7980 SdHoareTripleChecker+Invalid, 4300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1149 IncrementalHoareTripleChecker+Valid, 3151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:24:30,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5339 Valid, 7980 Invalid, 4300 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1149 Valid, 3151 Invalid, 0 Unknown, 0 Unchecked, 16.1s Time] [2022-11-20 12:24:30,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4495 states. [2022-11-20 12:24:31,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4495 to 2165. [2022-11-20 12:24:31,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2165 states, 1585 states have (on average 1.3854889589905364) internal successors, (2196), 1630 states have internal predecessors, (2196), 448 states have call successors, (448), 126 states have call predecessors, (448), 131 states have return successors, (465), 445 states have call predecessors, (465), 447 states have call successors, (465) [2022-11-20 12:24:31,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2165 states to 2165 states and 3109 transitions. [2022-11-20 12:24:31,188 INFO L78 Accepts]: Start accepts. Automaton has 2165 states and 3109 transitions. Word has length 138 [2022-11-20 12:24:31,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:24:31,189 INFO L495 AbstractCegarLoop]: Abstraction has 2165 states and 3109 transitions. [2022-11-20 12:24:31,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.625) internal successors, (157), 8 states have internal predecessors, (157), 4 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) [2022-11-20 12:24:31,189 INFO L276 IsEmpty]: Start isEmpty. Operand 2165 states and 3109 transitions. [2022-11-20 12:24:31,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-11-20 12:24:31,201 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:24:31,202 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:24:31,228 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ff1e83e-220c-4c14-837f-f2a48e9ebb19/bin/uautomizer-ug76WZFUDN/mathsat -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 12:24:31,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ff1e83e-220c-4c14-837f-f2a48e9ebb19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:24:31,421 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:24:31,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:24:31,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1248227987, now seen corresponding path program 1 times [2022-11-20 12:24:31,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:24:31,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1197379061] [2022-11-20 12:24:31,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:24:31,422 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:24:31,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ff1e83e-220c-4c14-837f-f2a48e9ebb19/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:24:31,423 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ff1e83e-220c-4c14-837f-f2a48e9ebb19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:24:31,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ff1e83e-220c-4c14-837f-f2a48e9ebb19/bin/uautomizer-ug76WZFUDN/mathsat -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 12:24:31,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:24:31,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 651 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 12:24:31,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:24:32,145 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2022-11-20 12:24:32,145 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:24:32,145 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:24:32,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1197379061] [2022-11-20 12:24:32,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1197379061] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:24:32,145 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:24:32,146 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:24:32,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245261652] [2022-11-20 12:24:32,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:24:32,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:24:32,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:24:32,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:24:32,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:24:32,148 INFO L87 Difference]: Start difference. First operand 2165 states and 3109 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-20 12:24:33,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:24:33,426 INFO L93 Difference]: Finished difference Result 3245 states and 4831 transitions. [2022-11-20 12:24:33,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:24:33,427 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 147 [2022-11-20 12:24:33,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:24:33,442 INFO L225 Difference]: With dead ends: 3245 [2022-11-20 12:24:33,442 INFO L226 Difference]: Without dead ends: 3242 [2022-11-20 12:24:33,444 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:24:33,445 INFO L413 NwaCegarLoop]: 2279 mSDtfsCounter, 1540 mSDsluCounter, 5748 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 259 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1642 SdHoareTripleChecker+Valid, 8027 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 259 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 12:24:33,445 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1642 Valid, 8027 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [259 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 12:24:33,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3242 states. [2022-11-20 12:24:33,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3242 to 2165. [2022-11-20 12:24:33,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2165 states, 1585 states have (on average 1.3854889589905364) internal successors, (2196), 1629 states have internal predecessors, (2196), 448 states have call successors, (448), 126 states have call predecessors, (448), 131 states have return successors, (465), 445 states have call predecessors, (465), 447 states have call successors, (465) [2022-11-20 12:24:33,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2165 states to 2165 states and 3109 transitions. [2022-11-20 12:24:33,851 INFO L78 Accepts]: Start accepts. Automaton has 2165 states and 3109 transitions. Word has length 147 [2022-11-20 12:24:33,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:24:33,851 INFO L495 AbstractCegarLoop]: Abstraction has 2165 states and 3109 transitions. [2022-11-20 12:24:33,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-20 12:24:33,852 INFO L276 IsEmpty]: Start isEmpty. Operand 2165 states and 3109 transitions. [2022-11-20 12:24:33,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-11-20 12:24:33,862 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:24:33,862 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 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] [2022-11-20 12:24:33,888 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ff1e83e-220c-4c14-837f-f2a48e9ebb19/bin/uautomizer-ug76WZFUDN/mathsat -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 12:24:34,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ff1e83e-220c-4c14-837f-f2a48e9ebb19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:24:34,075 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:24:34,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:24:34,075 INFO L85 PathProgramCache]: Analyzing trace with hash 1594568694, now seen corresponding path program 1 times [2022-11-20 12:24:34,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:24:34,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1142376790] [2022-11-20 12:24:34,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:24:34,076 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:24:34,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ff1e83e-220c-4c14-837f-f2a48e9ebb19/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:24:34,079 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ff1e83e-220c-4c14-837f-f2a48e9ebb19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:24:34,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ff1e83e-220c-4c14-837f-f2a48e9ebb19/bin/uautomizer-ug76WZFUDN/mathsat -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 12:24:34,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:24:34,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 763 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 12:24:34,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:24:34,817 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2022-11-20 12:24:34,817 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:24:34,818 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:24:34,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1142376790] [2022-11-20 12:24:34,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1142376790] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:24:34,818 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:24:34,818 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:24:34,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637836346] [2022-11-20 12:24:34,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:24:34,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:24:34,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:24:34,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:24:34,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:24:34,820 INFO L87 Difference]: Start difference. First operand 2165 states and 3109 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-20 12:24:36,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:24:36,560 INFO L93 Difference]: Finished difference Result 4693 states and 6906 transitions. [2022-11-20 12:24:36,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:24:36,561 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 169 [2022-11-20 12:24:36,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:24:36,578 INFO L225 Difference]: With dead ends: 4693 [2022-11-20 12:24:36,579 INFO L226 Difference]: Without dead ends: 3095 [2022-11-20 12:24:36,584 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:24:36,585 INFO L413 NwaCegarLoop]: 2195 mSDtfsCounter, 901 mSDsluCounter, 3624 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 974 SdHoareTripleChecker+Valid, 5819 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-20 12:24:36,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [974 Valid, 5819 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-20 12:24:36,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3095 states. [2022-11-20 12:24:36,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3095 to 2167. [2022-11-20 12:24:36,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2167 states, 1587 states have (on average 1.3850031505986138) internal successors, (2198), 1631 states have internal predecessors, (2198), 448 states have call successors, (448), 126 states have call predecessors, (448), 131 states have return successors, (465), 445 states have call predecessors, (465), 447 states have call successors, (465) [2022-11-20 12:24:36,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2167 states to 2167 states and 3111 transitions. [2022-11-20 12:24:36,932 INFO L78 Accepts]: Start accepts. Automaton has 2167 states and 3111 transitions. Word has length 169 [2022-11-20 12:24:36,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:24:36,933 INFO L495 AbstractCegarLoop]: Abstraction has 2167 states and 3111 transitions. [2022-11-20 12:24:36,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-20 12:24:36,933 INFO L276 IsEmpty]: Start isEmpty. Operand 2167 states and 3111 transitions. [2022-11-20 12:24:36,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-11-20 12:24:36,943 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:24:36,944 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 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] [2022-11-20 12:24:36,964 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ff1e83e-220c-4c14-837f-f2a48e9ebb19/bin/uautomizer-ug76WZFUDN/mathsat -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 12:24:37,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ff1e83e-220c-4c14-837f-f2a48e9ebb19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:24:37,164 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:24:37,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:24:37,165 INFO L85 PathProgramCache]: Analyzing trace with hash 92935620, now seen corresponding path program 1 times [2022-11-20 12:24:37,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:24:37,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1355423314] [2022-11-20 12:24:37,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:24:37,166 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:24:37,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ff1e83e-220c-4c14-837f-f2a48e9ebb19/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:24:37,167 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ff1e83e-220c-4c14-837f-f2a48e9ebb19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:24:37,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ff1e83e-220c-4c14-837f-f2a48e9ebb19/bin/uautomizer-ug76WZFUDN/mathsat -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 12:24:37,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:24:37,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 915 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:24:37,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:24:37,994 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2022-11-20 12:24:37,994 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:24:37,995 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:24:37,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1355423314] [2022-11-20 12:24:37,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1355423314] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:24:37,995 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:24:37,995 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:24:37,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796176685] [2022-11-20 12:24:37,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:24:37,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:24:37,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:24:37,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:24:37,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:24:37,997 INFO L87 Difference]: Start difference. First operand 2167 states and 3111 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-20 12:24:39,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:24:39,526 INFO L93 Difference]: Finished difference Result 4245 states and 6188 transitions. [2022-11-20 12:24:39,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:24:39,541 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 178 [2022-11-20 12:24:39,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:24:39,551 INFO L225 Difference]: With dead ends: 4245 [2022-11-20 12:24:39,551 INFO L226 Difference]: Without dead ends: 2645 [2022-11-20 12:24:39,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 176 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 12:24:39,556 INFO L413 NwaCegarLoop]: 2019 mSDtfsCounter, 353 mSDsluCounter, 1579 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 427 SdHoareTripleChecker+Valid, 3598 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:24:39,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [427 Valid, 3598 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-20 12:24:39,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2645 states. [2022-11-20 12:24:39,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2645 to 2169. [2022-11-20 12:24:39,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2169 states, 1589 states have (on average 1.3845185651353051) internal successors, (2200), 1633 states have internal predecessors, (2200), 448 states have call successors, (448), 126 states have call predecessors, (448), 131 states have return successors, (465), 445 states have call predecessors, (465), 447 states have call successors, (465) [2022-11-20 12:24:39,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2169 states to 2169 states and 3113 transitions. [2022-11-20 12:24:39,977 INFO L78 Accepts]: Start accepts. Automaton has 2169 states and 3113 transitions. Word has length 178 [2022-11-20 12:24:39,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:24:39,978 INFO L495 AbstractCegarLoop]: Abstraction has 2169 states and 3113 transitions. [2022-11-20 12:24:39,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-20 12:24:39,978 INFO L276 IsEmpty]: Start isEmpty. Operand 2169 states and 3113 transitions. [2022-11-20 12:24:39,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2022-11-20 12:24:39,998 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:24:39,999 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:24:40,026 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ff1e83e-220c-4c14-837f-f2a48e9ebb19/bin/uautomizer-ug76WZFUDN/mathsat -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 12:24:40,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ff1e83e-220c-4c14-837f-f2a48e9ebb19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:24:40,224 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:24:40,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:24:40,224 INFO L85 PathProgramCache]: Analyzing trace with hash -469232310, now seen corresponding path program 1 times [2022-11-20 12:24:40,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:24:40,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1973376798] [2022-11-20 12:24:40,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:24:40,225 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:24:40,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ff1e83e-220c-4c14-837f-f2a48e9ebb19/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:24:40,227 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ff1e83e-220c-4c14-837f-f2a48e9ebb19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:24:40,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ff1e83e-220c-4c14-837f-f2a48e9ebb19/bin/uautomizer-ug76WZFUDN/mathsat -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 12:24:41,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:24:41,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 977 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 12:24:41,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:24:41,467 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2022-11-20 12:24:41,467 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:24:41,467 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:24:41,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1973376798] [2022-11-20 12:24:41,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1973376798] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:24:41,467 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:24:41,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 12:24:41,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032640321] [2022-11-20 12:24:41,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:24:41,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:24:41,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:24:41,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:24:41,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:24:41,469 INFO L87 Difference]: Start difference. First operand 2169 states and 3113 transitions. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-20 12:24:45,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:24:45,062 INFO L93 Difference]: Finished difference Result 4860 states and 7161 transitions. [2022-11-20 12:24:45,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 12:24:45,063 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) Word has length 186 [2022-11-20 12:24:45,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:24:45,072 INFO L225 Difference]: With dead ends: 4860 [2022-11-20 12:24:45,072 INFO L226 Difference]: Without dead ends: 3258 [2022-11-20 12:24:45,075 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:24:45,076 INFO L413 NwaCegarLoop]: 2272 mSDtfsCounter, 1175 mSDsluCounter, 8324 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1278 SdHoareTripleChecker+Valid, 10596 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-20 12:24:45,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1278 Valid, 10596 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-20 12:24:45,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3258 states. [2022-11-20 12:24:45,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3258 to 2172. [2022-11-20 12:24:45,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2172 states, 1592 states have (on average 1.3837939698492463) internal successors, (2203), 1635 states have internal predecessors, (2203), 448 states have call successors, (448), 126 states have call predecessors, (448), 131 states have return successors, (465), 446 states have call predecessors, (465), 447 states have call successors, (465) [2022-11-20 12:24:45,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2172 states to 2172 states and 3116 transitions. [2022-11-20 12:24:45,390 INFO L78 Accepts]: Start accepts. Automaton has 2172 states and 3116 transitions. Word has length 186 [2022-11-20 12:24:45,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:24:45,392 INFO L495 AbstractCegarLoop]: Abstraction has 2172 states and 3116 transitions. [2022-11-20 12:24:45,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-20 12:24:45,393 INFO L276 IsEmpty]: Start isEmpty. Operand 2172 states and 3116 transitions. [2022-11-20 12:24:45,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2022-11-20 12:24:45,406 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:24:45,406 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 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] [2022-11-20 12:24:45,440 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ff1e83e-220c-4c14-837f-f2a48e9ebb19/bin/uautomizer-ug76WZFUDN/mathsat -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 12:24:45,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ff1e83e-220c-4c14-837f-f2a48e9ebb19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:24:45,629 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:24:45,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:24:45,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1914823374, now seen corresponding path program 1 times [2022-11-20 12:24:45,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:24:45,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [910382914] [2022-11-20 12:24:45,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:24:45,631 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 12:24:45,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ff1e83e-220c-4c14-837f-f2a48e9ebb19/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:24:45,632 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ff1e83e-220c-4c14-837f-f2a48e9ebb19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:24:45,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ff1e83e-220c-4c14-837f-f2a48e9ebb19/bin/uautomizer-ug76WZFUDN/mathsat -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 12:24:46,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:24:46,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 994 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:24:46,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:24:46,643 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2022-11-20 12:24:46,643 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:24:46,643 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:24:46,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [910382914] [2022-11-20 12:24:46,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [910382914] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:24:46,644 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:24:46,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:24:46,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482262073] [2022-11-20 12:24:46,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:24:46,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:24:46,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:24:46,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:24:46,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:24:46,648 INFO L87 Difference]: Start difference. First operand 2172 states and 3116 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-20 12:24:46,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:24:46,966 INFO L93 Difference]: Finished difference Result 4323 states and 6235 transitions. [2022-11-20 12:24:46,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:24:46,966 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 192 [2022-11-20 12:24:46,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:24:46,974 INFO L225 Difference]: With dead ends: 4323 [2022-11-20 12:24:46,974 INFO L226 Difference]: Without dead ends: 2175 [2022-11-20 12:24:46,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 190 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 12:24:46,981 INFO L413 NwaCegarLoop]: 1521 mSDtfsCounter, 0 mSDsluCounter, 1514 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3035 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:24:46,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3035 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:24:46,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2175 states. [2022-11-20 12:24:47,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2175 to 2172. [2022-11-20 12:24:47,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2172 states, 1592 states have (on average 1.3781407035175879) internal successors, (2194), 1635 states have internal predecessors, (2194), 448 states have call successors, (448), 126 states have call predecessors, (448), 131 states have return successors, (465), 446 states have call predecessors, (465), 447 states have call successors, (465) [2022-11-20 12:24:47,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2172 states to 2172 states and 3107 transitions. [2022-11-20 12:24:47,354 INFO L78 Accepts]: Start accepts. Automaton has 2172 states and 3107 transitions. Word has length 192 [2022-11-20 12:24:47,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:24:47,354 INFO L495 AbstractCegarLoop]: Abstraction has 2172 states and 3107 transitions. [2022-11-20 12:24:47,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-20 12:24:47,355 INFO L276 IsEmpty]: Start isEmpty. Operand 2172 states and 3107 transitions. [2022-11-20 12:24:47,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2022-11-20 12:24:47,365 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:24:47,365 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 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] [2022-11-20 12:24:47,392 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ff1e83e-220c-4c14-837f-f2a48e9ebb19/bin/uautomizer-ug76WZFUDN/mathsat -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 12:24:47,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ff1e83e-220c-4c14-837f-f2a48e9ebb19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:24:47,589 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:24:47,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:24:47,590 INFO L85 PathProgramCache]: Analyzing trace with hash 27010145, now seen corresponding path program 1 times [2022-11-20 12:24:47,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:24:47,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1300358823] [2022-11-20 12:24:47,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:24:47,591 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:24:47,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ff1e83e-220c-4c14-837f-f2a48e9ebb19/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:24:47,593 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ff1e83e-220c-4c14-837f-f2a48e9ebb19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:24:47,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ff1e83e-220c-4c14-837f-f2a48e9ebb19/bin/uautomizer-ug76WZFUDN/mathsat -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 12:24:51,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:24:51,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 1000 conjuncts, 160 conjunts are in the unsatisfiable core [2022-11-20 12:24:51,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:24:51,584 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-20 12:24:52,323 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2022-11-20 12:24:52,803 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2022-11-20 12:24:53,722 INFO L321 Elim1Store]: treesize reduction 56, result has 25.3 percent of original size [2022-11-20 12:24:53,722 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 34 [2022-11-20 12:24:54,584 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-20 12:24:55,497 INFO L321 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2022-11-20 12:24:55,497 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2022-11-20 12:24:56,127 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:24:56,129 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:24:56,130 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:24:56,145 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 30 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 81 [2022-11-20 12:24:58,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:24:58,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:24:58,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:24:58,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:24:58,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:24:58,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:24:58,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:24:58,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:24:58,230 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 38 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 100 [2022-11-20 12:24:58,277 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 12:24:58,318 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-20 12:24:58,925 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 12:24:58,959 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-11-20 12:24:58,992 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 12 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 66 [2022-11-20 12:25:00,391 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 80 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 138 [2022-11-20 12:25:00,447 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 47 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 96 [2022-11-20 12:25:00,479 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 47 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 94 [2022-11-20 12:25:02,228 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 80 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 118 [2022-11-20 12:25:02,307 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 47 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 80 [2022-11-20 12:25:02,389 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 47 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 84 [2022-11-20 12:25:02,405 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2022-11-20 12:25:02,418 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 39 [2022-11-20 12:25:03,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:03,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:03,078 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 36 [2022-11-20 12:25:03,086 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 28 [2022-11-20 12:25:03,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:03,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:03,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:03,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:03,123 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 64 [2022-11-20 12:25:03,135 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 39 [2022-11-20 12:25:03,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:03,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:03,176 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 36 [2022-11-20 12:25:03,186 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2022-11-20 12:25:04,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:04,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:04,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:04,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:04,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:04,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:04,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:04,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:04,596 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 16 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 57 [2022-11-20 12:25:04,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:04,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:04,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:04,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:04,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:04,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:04,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:04,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:04,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:04,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:04,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:04,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:04,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:04,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:04,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:04,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:04,681 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 29 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 85 [2022-11-20 12:25:04,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:04,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:04,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:04,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:04,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:04,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:04,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:04,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:04,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:04,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:04,789 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 22 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 69 [2022-11-20 12:25:06,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:06,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:06,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:06,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:06,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:06,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:06,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:06,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:06,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:06,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:06,341 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 22 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 69 [2022-11-20 12:25:06,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:06,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:06,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:06,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:06,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:06,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:06,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:06,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:06,401 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 16 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 57 [2022-11-20 12:25:06,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:06,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:06,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:06,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:06,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:06,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:06,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:06,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:06,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:06,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:06,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:06,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:06,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:06,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:06,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:06,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:06,484 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 29 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 85 [2022-11-20 12:25:09,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:09,584 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 200 treesize of output 156 [2022-11-20 12:25:09,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:09,773 INFO L321 Elim1Store]: treesize reduction 512, result has 2.5 percent of original size [2022-11-20 12:25:09,773 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 7 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 60 case distinctions, treesize of input 159 treesize of output 51 [2022-11-20 12:25:09,782 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-20 12:25:10,120 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 64 proven. 13 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-11-20 12:25:10,121 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:25:10,504 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1024 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1023 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1025 (Array (_ BitVec 64) (_ BitVec 8)))) (bvsle ((_ extract 31 0) (let ((.cse2 (bvadd |c_ULTIMATE.start_slip_open_~sl~12#1.offset| (_ bv12 64)))) (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_slip_open_~tty#1.base| v_ArrVal_1025) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_slip_open_~tty#1.base| v_ArrVal_1023) |c_ULTIMATE.start_slip_open_~sl~12#1.base|) .cse2))) (.cse1 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_slip_open_~tty#1.base| v_ArrVal_1024) |c_ULTIMATE.start_slip_open_~sl~12#1.base|) .cse2))) (concat (concat (concat (concat (concat (concat (concat (select .cse0 (bvadd .cse1 (_ bv119 64))) (select .cse0 (bvadd (_ bv118 64) .cse1))) (select .cse0 (bvadd .cse1 (_ bv117 64)))) (select .cse0 (bvadd (_ bv116 64) .cse1))) (select .cse0 (bvadd .cse1 (_ bv115 64)))) (select .cse0 (bvadd .cse1 (_ bv114 64)))) (select .cse0 (bvadd (_ bv113 64) .cse1))) (select .cse0 (bvadd (_ bv112 64) .cse1)))))) (_ bv0 32))) is different from false [2022-11-20 12:25:10,539 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:25:10,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1300358823] [2022-11-20 12:25:10,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1300358823] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:25:10,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1055186981] [2022-11-20 12:25:10,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:25:10,540 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 12:25:10,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ff1e83e-220c-4c14-837f-f2a48e9ebb19/bin/uautomizer-ug76WZFUDN/cvc4 [2022-11-20 12:25:10,542 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ff1e83e-220c-4c14-837f-f2a48e9ebb19/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 12:25:10,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ff1e83e-220c-4c14-837f-f2a48e9ebb19/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process