./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point_ldv-val-v0.8.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/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_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point_ldv-val-v0.8.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/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_d48819e4-07d7-40d6-bedb-31d5353a26ae/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 b83c28af83745ba79af1b1ebec4b495db7aa2efb3702685bbdc4b86421ef4c0a --- 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 09:30:19,868 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 09:30:19,870 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 09:30:19,899 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 09:30:19,900 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 09:30:19,903 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 09:30:19,908 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 09:30:19,912 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 09:30:19,914 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 09:30:19,920 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 09:30:19,922 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 09:30:19,924 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 09:30:19,924 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 09:30:19,927 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 09:30:19,929 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 09:30:19,931 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 09:30:19,933 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 09:30:19,934 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 09:30:19,936 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 09:30:19,942 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 09:30:19,944 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 09:30:19,946 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 09:30:19,947 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 09:30:19,948 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 09:30:19,958 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 09:30:19,959 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 09:30:19,959 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 09:30:19,961 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 09:30:19,961 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 09:30:19,962 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 09:30:19,963 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 09:30:19,964 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 09:30:19,965 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 09:30:19,967 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 09:30:19,968 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 09:30:19,968 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 09:30:19,969 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 09:30:19,969 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 09:30:19,969 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 09:30:19,970 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 09:30:19,973 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 09:30:19,974 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-20 09:30:20,018 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 09:30:20,019 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 09:30:20,020 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 09:30:20,020 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 09:30:20,021 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 09:30:20,021 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 09:30:20,022 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 09:30:20,022 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 09:30:20,022 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 09:30:20,022 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 09:30:20,023 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 09:30:20,023 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 09:30:20,024 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 09:30:20,024 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 09:30:20,024 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 09:30:20,024 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 09:30:20,024 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 09:30:20,025 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 09:30:20,025 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 09:30:20,025 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 09:30:20,025 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 09:30:20,025 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 09:30:20,026 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 09:30:20,026 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 09:30:20,026 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 09:30:20,026 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 09:30:20,026 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 09:30:20,027 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 09:30:20,027 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 09:30:20,028 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 09:30:20,028 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_d48819e4-07d7-40d6-bedb-31d5353a26ae/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b83c28af83745ba79af1b1ebec4b495db7aa2efb3702685bbdc4b86421ef4c0a [2022-11-20 09:30:20,306 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 09:30:20,340 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 09:30:20,343 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 09:30:20,345 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 09:30:20,345 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 09:30:20,347 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point_ldv-val-v0.8.cil.out.i [2022-11-20 09:30:23,428 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 09:30:24,186 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 09:30:24,186 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point_ldv-val-v0.8.cil.out.i [2022-11-20 09:30:24,241 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/data/ed5ccdf77/f0d25f63a48049eca768bc5b8ae0a255/FLAG3e5b27bc8 [2022-11-20 09:30:24,260 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/data/ed5ccdf77/f0d25f63a48049eca768bc5b8ae0a255 [2022-11-20 09:30:24,265 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 09:30:24,268 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 09:30:24,273 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 09:30:24,273 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 09:30:24,277 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 09:30:24,278 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:30:24" (1/1) ... [2022-11-20 09:30:24,280 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6beed16f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:30:24, skipping insertion in model container [2022-11-20 09:30:24,280 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:30:24" (1/1) ... [2022-11-20 09:30:24,289 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 09:30:24,437 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 09:30:25,104 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 09:30:25,115 INFO L158 Benchmark]: Toolchain (without parser) took 845.54ms. Allocated memory is still 151.0MB. Free memory was 108.0MB in the beginning and 62.6MB in the end (delta: 45.4MB). Peak memory consumption was 46.1MB. Max. memory is 16.1GB. [2022-11-20 09:30:25,115 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 151.0MB. Free memory was 98.3MB in the beginning and 98.1MB in the end (delta: 159.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 09:30:25,117 INFO L158 Benchmark]: CACSL2BoogieTranslator took 839.29ms. Allocated memory is still 151.0MB. Free memory was 108.0MB in the beginning and 62.6MB in the end (delta: 45.4MB). Peak memory consumption was 46.1MB. Max. memory is 16.1GB. [2022-11-20 09:30:25,119 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 151.0MB. Free memory was 98.3MB in the beginning and 98.1MB in the end (delta: 159.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 839.29ms. Allocated memory is still 151.0MB. Free memory was 108.0MB in the beginning and 62.6MB 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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/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_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point_ldv-val-v0.8.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/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_d48819e4-07d7-40d6-bedb-31d5353a26ae/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 b83c28af83745ba79af1b1ebec4b495db7aa2efb3702685bbdc4b86421ef4c0a --- 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 09:30:27,594 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 09:30:27,597 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 09:30:27,654 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 09:30:27,654 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 09:30:27,658 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 09:30:27,661 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 09:30:27,665 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 09:30:27,667 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 09:30:27,673 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 09:30:27,675 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 09:30:27,678 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 09:30:27,678 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 09:30:27,681 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 09:30:27,683 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 09:30:27,688 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 09:30:27,691 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 09:30:27,692 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 09:30:27,694 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 09:30:27,699 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 09:30:27,701 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 09:30:27,704 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 09:30:27,705 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 09:30:27,706 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 09:30:27,715 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 09:30:27,717 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 09:30:27,717 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 09:30:27,718 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 09:30:27,719 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 09:30:27,720 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 09:30:27,721 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 09:30:27,722 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 09:30:27,724 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 09:30:27,725 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 09:30:27,726 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 09:30:27,726 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 09:30:27,727 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 09:30:27,727 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 09:30:27,728 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 09:30:27,728 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 09:30:27,729 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 09:30:27,734 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-11-20 09:30:27,776 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 09:30:27,777 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 09:30:27,778 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 09:30:27,778 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 09:30:27,779 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 09:30:27,780 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 09:30:27,780 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 09:30:27,781 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 09:30:27,781 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 09:30:27,781 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 09:30:27,782 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 09:30:27,783 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 09:30:27,783 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 09:30:27,783 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 09:30:27,783 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 09:30:27,783 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-20 09:30:27,784 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-20 09:30:27,784 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 09:30:27,784 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 09:30:27,784 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 09:30:27,785 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 09:30:27,785 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 09:30:27,785 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 09:30:27,785 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 09:30:27,786 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 09:30:27,786 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 09:30:27,786 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 09:30:27,786 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-20 09:30:27,786 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-20 09:30:27,787 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 09:30:27,787 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 09:30:27,787 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 09:30:27,787 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-20 09:30:27,788 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_d48819e4-07d7-40d6-bedb-31d5353a26ae/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b83c28af83745ba79af1b1ebec4b495db7aa2efb3702685bbdc4b86421ef4c0a [2022-11-20 09:30:28,206 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 09:30:28,243 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 09:30:28,246 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 09:30:28,248 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 09:30:28,249 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 09:30:28,250 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point_ldv-val-v0.8.cil.out.i [2022-11-20 09:30:31,668 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 09:30:32,320 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 09:30:32,321 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point_ldv-val-v0.8.cil.out.i [2022-11-20 09:30:32,378 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/data/a753fd9eb/17a1d9b9e9f14446a42d2ed4730e8aab/FLAG938e7d11d [2022-11-20 09:30:32,408 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/data/a753fd9eb/17a1d9b9e9f14446a42d2ed4730e8aab [2022-11-20 09:30:32,411 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 09:30:32,413 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 09:30:32,417 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 09:30:32,418 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 09:30:32,422 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 09:30:32,423 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:30:32" (1/1) ... [2022-11-20 09:30:32,425 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a6bd349 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:30:32, skipping insertion in model container [2022-11-20 09:30:32,425 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:30:32" (1/1) ... [2022-11-20 09:30:32,434 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 09:30:32,611 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 09:30:34,104 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_d48819e4-07d7-40d6-bedb-31d5353a26ae/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point_ldv-val-v0.8.cil.out.i[216887,216900] [2022-11-20 09:30:34,150 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 09:30:34,231 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-20 09:30:34,292 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 09:30:34,766 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_d48819e4-07d7-40d6-bedb-31d5353a26ae/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point_ldv-val-v0.8.cil.out.i[216887,216900] [2022-11-20 09:30:34,775 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 09:30:34,790 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 09:30:35,192 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_d48819e4-07d7-40d6-bedb-31d5353a26ae/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point_ldv-val-v0.8.cil.out.i[216887,216900] [2022-11-20 09:30:35,197 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 09:30:35,396 INFO L208 MainTranslator]: Completed translation [2022-11-20 09:30:35,397 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:30:35 WrapperNode [2022-11-20 09:30:35,397 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 09:30:35,398 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 09:30:35,399 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 09:30:35,399 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 09:30:35,408 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:30:35" (1/1) ... [2022-11-20 09:30:35,523 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:30:35" (1/1) ... [2022-11-20 09:30:35,717 INFO L138 Inliner]: procedures = 200, calls = 873, calls flagged for inlining = 93, calls inlined = 91, statements flattened = 3091 [2022-11-20 09:30:35,718 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 09:30:35,720 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 09:30:35,720 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 09:30:35,721 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 09:30:35,733 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:30:35" (1/1) ... [2022-11-20 09:30:35,734 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:30:35" (1/1) ... [2022-11-20 09:30:35,777 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:30:35" (1/1) ... [2022-11-20 09:30:35,780 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:30:35" (1/1) ... [2022-11-20 09:30:35,968 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:30:35" (1/1) ... [2022-11-20 09:30:36,028 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:30:35" (1/1) ... [2022-11-20 09:30:36,052 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:30:35" (1/1) ... [2022-11-20 09:30:36,064 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:30:35" (1/1) ... [2022-11-20 09:30:36,100 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 09:30:36,103 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 09:30:36,104 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 09:30:36,104 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 09:30:36,106 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:30:35" (1/1) ... [2022-11-20 09:30:36,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 09:30:36,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:30:36,147 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 09:30:36,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 09:30:36,206 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int_nonpositive [2022-11-20 09:30:36,207 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int_nonpositive [2022-11-20 09:30:36,207 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-11-20 09:30:36,207 INFO L130 BoogieDeclarations]: Found specification of procedure sl_tx_timeout [2022-11-20 09:30:36,208 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_tx_timeout [2022-11-20 09:30:36,208 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-11-20 09:30:36,208 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2022-11-20 09:30:36,208 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-20 09:30:36,208 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-20 09:30:36,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-20 09:30:36,209 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-20 09:30:36,209 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-20 09:30:36,209 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-20 09:30:36,209 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-20 09:30:36,210 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-11-20 09:30:36,210 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-11-20 09:30:36,210 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-20 09:30:36,210 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-20 09:30:36,211 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_unlock [2022-11-20 09:30:36,211 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_unlock [2022-11-20 09:30:36,211 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-20 09:30:36,212 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-20 09:30:36,212 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-20 09:30:36,212 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-20 09:30:36,212 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-20 09:30:36,213 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-20 09:30:36,214 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2022-11-20 09:30:36,214 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2022-11-20 09:30:36,214 INFO L130 BoogieDeclarations]: Found specification of procedure sl_bump [2022-11-20 09:30:36,215 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_bump [2022-11-20 09:30:36,215 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-20 09:30:36,216 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-20 09:30:36,216 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 09:30:36,216 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-20 09:30:36,216 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-20 09:30:36,216 INFO L130 BoogieDeclarations]: Found specification of procedure sl_get_stats64 [2022-11-20 09:30:36,217 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_get_stats64 [2022-11-20 09:30:36,217 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 09:30:36,217 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2022-11-20 09:30:36,218 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2022-11-20 09:30:36,218 INFO L130 BoogieDeclarations]: Found specification of procedure sl_ioctl [2022-11-20 09:30:36,218 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_ioctl [2022-11-20 09:30:36,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-11-20 09:30:36,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-11-20 09:30:36,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2022-11-20 09:30:36,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 09:30:36,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-20 09:30:36,219 INFO L130 BoogieDeclarations]: Found specification of procedure netif_queue_stopped [2022-11-20 09:30:36,219 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_queue_stopped [2022-11-20 09:30:36,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-20 09:30:36,220 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-11-20 09:30:36,221 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-11-20 09:30:36,221 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-20 09:30:36,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-11-20 09:30:36,222 INFO L130 BoogieDeclarations]: Found specification of procedure slip_hangup [2022-11-20 09:30:36,222 INFO L138 BoogieDeclarations]: Found implementation of procedure slip_hangup [2022-11-20 09:30:36,223 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-20 09:30:36,223 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-20 09:30:36,223 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-20 09:30:36,223 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-20 09:30:36,223 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-20 09:30:36,223 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-20 09:30:36,224 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-20 09:30:36,224 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-20 09:30:36,224 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2022-11-20 09:30:36,224 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2022-11-20 09:30:36,224 INFO L130 BoogieDeclarations]: Found specification of procedure sl_unlock [2022-11-20 09:30:36,225 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_unlock [2022-11-20 09:30:36,225 INFO L130 BoogieDeclarations]: Found specification of procedure activate_pending_timer_1 [2022-11-20 09:30:36,225 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_pending_timer_1 [2022-11-20 09:30:36,225 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-11-20 09:30:36,225 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-11-20 09:30:36,225 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2022-11-20 09:30:36,226 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2022-11-20 09:30:36,226 INFO L130 BoogieDeclarations]: Found specification of procedure slhc_free [2022-11-20 09:30:36,227 INFO L138 BoogieDeclarations]: Found implementation of procedure slhc_free [2022-11-20 09:30:36,227 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-20 09:30:36,227 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-20 09:30:36,228 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-20 09:30:36,228 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-20 09:30:36,228 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-20 09:30:36,228 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-20 09:30:36,228 INFO L130 BoogieDeclarations]: Found specification of procedure sl_free_bufs [2022-11-20 09:30:36,230 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_free_bufs [2022-11-20 09:30:36,230 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2022-11-20 09:30:36,230 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2022-11-20 09:30:36,230 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-11-20 09:30:36,230 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2022-11-20 09:30:36,231 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-20 09:30:36,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-20 09:30:36,231 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-20 09:30:36,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-20 09:30:36,232 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 09:30:36,233 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_timer_1 [2022-11-20 09:30:36,233 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_timer_1 [2022-11-20 09:30:36,233 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-20 09:30:36,233 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-20 09:30:36,234 INFO L130 BoogieDeclarations]: Found specification of procedure slip_ioctl [2022-11-20 09:30:36,234 INFO L138 BoogieDeclarations]: Found implementation of procedure slip_ioctl [2022-11-20 09:30:36,234 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 09:30:36,234 INFO L130 BoogieDeclarations]: Found specification of procedure slip_close [2022-11-20 09:30:36,235 INFO L138 BoogieDeclarations]: Found implementation of procedure slip_close [2022-11-20 09:30:36,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 09:30:36,235 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-20 09:30:36,235 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2022-11-20 09:30:36,235 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2022-11-20 09:30:36,236 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_1 [2022-11-20 09:30:36,236 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_1 [2022-11-20 09:30:36,236 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2022-11-20 09:30:36,236 INFO L130 BoogieDeclarations]: Found specification of procedure slip_compat_ioctl [2022-11-20 09:30:36,237 INFO L138 BoogieDeclarations]: Found implementation of procedure slip_compat_ioctl [2022-11-20 09:30:36,238 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-11-20 09:30:36,241 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-11-20 09:30:36,242 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~C_INT~TO~C_INT [2022-11-20 09:30:36,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~C_INT~TO~C_INT [2022-11-20 09:30:36,242 INFO L130 BoogieDeclarations]: Found specification of procedure tty_hangup [2022-11-20 09:30:36,243 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_hangup [2022-11-20 09:30:36,243 INFO L130 BoogieDeclarations]: Found specification of procedure tty_devnum [2022-11-20 09:30:36,245 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_devnum [2022-11-20 09:30:36,246 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-20 09:30:36,246 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-20 09:30:36,252 INFO L130 BoogieDeclarations]: Found specification of procedure sl_change_mtu [2022-11-20 09:30:36,252 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_change_mtu [2022-11-20 09:30:36,252 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~C_ULONG~TO~VOID [2022-11-20 09:30:36,253 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~C_ULONG~TO~VOID [2022-11-20 09:30:36,253 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-20 09:30:36,253 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-20 09:30:36,253 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2022-11-20 09:30:36,254 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_clear_bit [2022-11-20 09:30:36,254 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_clear_bit [2022-11-20 09:30:36,254 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2022-11-20 09:30:36,255 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2022-11-20 09:30:36,255 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 09:30:36,255 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 09:30:36,255 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2022-11-20 09:30:36,255 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2022-11-20 09:30:36,993 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 09:30:36,997 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 09:30:37,459 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-20 09:30:59,208 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 09:30:59,223 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 09:30:59,224 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-20 09:30:59,227 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:30:59 BoogieIcfgContainer [2022-11-20 09:30:59,227 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 09:30:59,230 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 09:30:59,230 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 09:30:59,233 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 09:30:59,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:30:32" (1/3) ... [2022-11-20 09:30:59,234 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b32b6a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:30:59, skipping insertion in model container [2022-11-20 09:30:59,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:30:35" (2/3) ... [2022-11-20 09:30:59,235 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b32b6a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:30:59, skipping insertion in model container [2022-11-20 09:30:59,235 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:30:59" (3/3) ... [2022-11-20 09:30:59,236 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point_ldv-val-v0.8.cil.out.i [2022-11-20 09:30:59,257 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 09:30:59,257 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 09:30:59,336 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 09:30:59,343 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;@83c776a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 09:30:59,343 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 09:30:59,352 INFO L276 IsEmpty]: Start isEmpty. Operand has 1103 states, 813 states have (on average 1.4218942189421895) internal successors, (1156), 845 states have internal predecessors, (1156), 236 states have call successors, (236), 53 states have call predecessors, (236), 52 states have return successors, (231), 229 states have call predecessors, (231), 231 states have call successors, (231) [2022-11-20 09:30:59,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-11-20 09:30:59,373 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:30:59,374 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2022-11-20 09:30:59,375 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:30:59,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:30:59,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1401713046, now seen corresponding path program 1 times [2022-11-20 09:30:59,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:30:59,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1145235696] [2022-11-20 09:30:59,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:30:59,397 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 09:30:59,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:30:59,403 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/mathsat -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 09:30:59,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/mathsat -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 09:31:00,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:00,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 805 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-20 09:31:00,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:31:00,381 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2022-11-20 09:31:00,382 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:31:00,382 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:31:00,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1145235696] [2022-11-20 09:31:00,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1145235696] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:31:00,383 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:31:00,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 09:31:00,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771816024] [2022-11-20 09:31:00,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:31:00,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 09:31:00,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:31:00,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 09:31:00,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 09:31:00,424 INFO L87 Difference]: Start difference. First operand has 1103 states, 813 states have (on average 1.4218942189421895) internal successors, (1156), 845 states have internal predecessors, (1156), 236 states have call successors, (236), 53 states have call predecessors, (236), 52 states have return successors, (231), 229 states have call predecessors, (231), 231 states have call successors, (231) Second operand has 2 states, 2 states have (on average 30.0) internal successors, (60), 2 states have internal predecessors, (60), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-20 09:31:00,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:31:00,601 INFO L93 Difference]: Finished difference Result 2202 states and 3267 transitions. [2022-11-20 09:31:00,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 09:31:00,603 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 30.0) internal successors, (60), 2 states have internal predecessors, (60), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 161 [2022-11-20 09:31:00,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:31:00,635 INFO L225 Difference]: With dead ends: 2202 [2022-11-20 09:31:00,635 INFO L226 Difference]: Without dead ends: 1061 [2022-11-20 09:31:00,651 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 09:31:00,657 INFO L413 NwaCegarLoop]: 1620 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1620 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 09:31:00,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1620 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 09:31:00,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1061 states. [2022-11-20 09:31:00,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1061 to 1061. [2022-11-20 09:31:00,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1061 states, 784 states have (on average 1.413265306122449) internal successors, (1108), 808 states have internal predecessors, (1108), 224 states have call successors, (224), 52 states have call predecessors, (224), 52 states have return successors, (224), 222 states have call predecessors, (224), 224 states have call successors, (224) [2022-11-20 09:31:00,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1061 states to 1061 states and 1556 transitions. [2022-11-20 09:31:00,822 INFO L78 Accepts]: Start accepts. Automaton has 1061 states and 1556 transitions. Word has length 161 [2022-11-20 09:31:00,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:31:00,823 INFO L495 AbstractCegarLoop]: Abstraction has 1061 states and 1556 transitions. [2022-11-20 09:31:00,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 30.0) internal successors, (60), 2 states have internal predecessors, (60), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-20 09:31:00,824 INFO L276 IsEmpty]: Start isEmpty. Operand 1061 states and 1556 transitions. [2022-11-20 09:31:00,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-11-20 09:31:00,838 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:31:00,838 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2022-11-20 09:31:00,864 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-20 09:31:01,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/mathsat -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 09:31:01,056 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:31:01,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:31:01,057 INFO L85 PathProgramCache]: Analyzing trace with hash -217084468, now seen corresponding path program 1 times [2022-11-20 09:31:01,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:31:01,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [618697119] [2022-11-20 09:31:01,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:31:01,058 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 09:31:01,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:31:01,083 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/mathsat -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 09:31:01,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/mathsat -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 09:31:01,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:01,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 805 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 09:31:01,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:31:02,063 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2022-11-20 09:31:02,063 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:31:02,064 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:31:02,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [618697119] [2022-11-20 09:31:02,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [618697119] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:31:02,064 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:31:02,065 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 09:31:02,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880343461] [2022-11-20 09:31:02,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:31:02,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 09:31:02,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:31:02,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 09:31:02,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 09:31:02,069 INFO L87 Difference]: Start difference. First operand 1061 states and 1556 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-20 09:31:02,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:31:02,310 INFO L93 Difference]: Finished difference Result 2108 states and 3097 transitions. [2022-11-20 09:31:02,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 09:31:02,311 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 161 [2022-11-20 09:31:02,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:31:02,319 INFO L225 Difference]: With dead ends: 2108 [2022-11-20 09:31:02,319 INFO L226 Difference]: Without dead ends: 1062 [2022-11-20 09:31:02,324 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 158 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 09:31:02,325 INFO L413 NwaCegarLoop]: 1554 mSDtfsCounter, 3 mSDsluCounter, 3093 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 4647 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 09:31:02,326 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 4647 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 09:31:02,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1062 states. [2022-11-20 09:31:02,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1062 to 1062. [2022-11-20 09:31:02,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1062 states, 785 states have (on average 1.4127388535031846) internal successors, (1109), 809 states have internal predecessors, (1109), 224 states have call successors, (224), 52 states have call predecessors, (224), 52 states have return successors, (224), 222 states have call predecessors, (224), 224 states have call successors, (224) [2022-11-20 09:31:02,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1062 states to 1062 states and 1557 transitions. [2022-11-20 09:31:02,399 INFO L78 Accepts]: Start accepts. Automaton has 1062 states and 1557 transitions. Word has length 161 [2022-11-20 09:31:02,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:31:02,402 INFO L495 AbstractCegarLoop]: Abstraction has 1062 states and 1557 transitions. [2022-11-20 09:31:02,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-20 09:31:02,403 INFO L276 IsEmpty]: Start isEmpty. Operand 1062 states and 1557 transitions. [2022-11-20 09:31:02,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-11-20 09:31:02,408 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:31:02,408 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2022-11-20 09:31:02,436 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/mathsat -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 09:31:02,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/mathsat -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 09:31:02,630 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:31:02,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:31:02,631 INFO L85 PathProgramCache]: Analyzing trace with hash 494426431, now seen corresponding path program 1 times [2022-11-20 09:31:02,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:31:02,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1504894634] [2022-11-20 09:31:02,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:31:02,633 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 09:31:02,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:31:02,635 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/mathsat -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 09:31:02,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/mathsat -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 09:31:03,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:03,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 882 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 09:31:03,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:31:03,686 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 48 proven. 1 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2022-11-20 09:31:03,686 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:31:04,194 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2022-11-20 09:31:04,195 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:31:04,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1504894634] [2022-11-20 09:31:04,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1504894634] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:31:04,195 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:31:04,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-20 09:31:04,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116933466] [2022-11-20 09:31:04,196 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:31:04,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 09:31:04,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:31:04,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 09:31:04,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-20 09:31:04,200 INFO L87 Difference]: Start difference. First operand 1062 states and 1557 transitions. Second operand has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 states have internal predecessors, (66), 2 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-20 09:31:04,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:31:04,928 INFO L93 Difference]: Finished difference Result 2119 states and 3116 transitions. [2022-11-20 09:31:04,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 09:31:04,930 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 states have internal predecessors, (66), 2 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 168 [2022-11-20 09:31:04,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:31:04,940 INFO L225 Difference]: With dead ends: 2119 [2022-11-20 09:31:04,941 INFO L226 Difference]: Without dead ends: 1072 [2022-11-20 09:31:04,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 328 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2022-11-20 09:31:04,950 INFO L413 NwaCegarLoop]: 1552 mSDtfsCounter, 14 mSDsluCounter, 7724 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 9276 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 09:31:04,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 9276 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 09:31:04,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1072 states. [2022-11-20 09:31:04,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1072 to 1072. [2022-11-20 09:31:04,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1072 states, 794 states have (on average 1.4118387909319898) internal successors, (1121), 818 states have internal predecessors, (1121), 224 states have call successors, (224), 53 states have call predecessors, (224), 53 states have return successors, (224), 222 states have call predecessors, (224), 224 states have call successors, (224) [2022-11-20 09:31:04,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1072 states to 1072 states and 1569 transitions. [2022-11-20 09:31:04,992 INFO L78 Accepts]: Start accepts. Automaton has 1072 states and 1569 transitions. Word has length 168 [2022-11-20 09:31:04,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:31:04,994 INFO L495 AbstractCegarLoop]: Abstraction has 1072 states and 1569 transitions. [2022-11-20 09:31:04,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 states have internal predecessors, (66), 2 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-20 09:31:04,995 INFO L276 IsEmpty]: Start isEmpty. Operand 1072 states and 1569 transitions. [2022-11-20 09:31:04,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-11-20 09:31:04,998 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:31:04,998 INFO L195 NwaCegarLoop]: trace histogram [24, 7, 7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2022-11-20 09:31:05,025 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/mathsat -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 09:31:05,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/mathsat -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 09:31:05,219 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:31:05,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:31:05,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1665696692, now seen corresponding path program 2 times [2022-11-20 09:31:05,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:31:05,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [442906582] [2022-11-20 09:31:05,221 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 09:31:05,222 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 09:31:05,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:31:05,223 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/mathsat -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 09:31:05,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/mathsat -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 09:31:05,807 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 09:31:05,807 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:31:05,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 09:31:05,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:31:05,913 INFO L134 CoverageAnalysis]: Checked inductivity of 693 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 693 trivial. 0 not checked. [2022-11-20 09:31:05,913 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:31:05,914 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:31:05,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [442906582] [2022-11-20 09:31:05,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [442906582] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:31:05,914 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:31:05,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:31:05,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192864870] [2022-11-20 09:31:05,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:31:05,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:31:05,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:31:05,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:31:05,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:31:05,916 INFO L87 Difference]: Start difference. First operand 1072 states and 1569 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2022-11-20 09:31:06,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:31:06,244 INFO L93 Difference]: Finished difference Result 2654 states and 3857 transitions. [2022-11-20 09:31:06,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:31:06,245 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 185 [2022-11-20 09:31:06,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:31:06,255 INFO L225 Difference]: With dead ends: 2654 [2022-11-20 09:31:06,256 INFO L226 Difference]: Without dead ends: 1629 [2022-11-20 09:31:06,263 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 183 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 09:31:06,266 INFO L413 NwaCegarLoop]: 1689 mSDtfsCounter, 823 mSDsluCounter, 1473 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 823 SdHoareTripleChecker+Valid, 3162 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 09:31:06,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [823 Valid, 3162 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 09:31:06,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1629 states. [2022-11-20 09:31:06,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1629 to 1629. [2022-11-20 09:31:06,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1629 states, 1195 states have (on average 1.39581589958159) internal successors, (1668), 1228 states have internal predecessors, (1668), 341 states have call successors, (341), 92 states have call predecessors, (341), 92 states have return successors, (341), 338 states have call predecessors, (341), 341 states have call successors, (341) [2022-11-20 09:31:06,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1629 states to 1629 states and 2350 transitions. [2022-11-20 09:31:06,356 INFO L78 Accepts]: Start accepts. Automaton has 1629 states and 2350 transitions. Word has length 185 [2022-11-20 09:31:06,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:31:06,358 INFO L495 AbstractCegarLoop]: Abstraction has 1629 states and 2350 transitions. [2022-11-20 09:31:06,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2022-11-20 09:31:06,358 INFO L276 IsEmpty]: Start isEmpty. Operand 1629 states and 2350 transitions. [2022-11-20 09:31:06,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2022-11-20 09:31:06,366 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:31:06,366 INFO L195 NwaCegarLoop]: trace histogram [24, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:31:06,392 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/mathsat -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 09:31:06,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/mathsat -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 09:31:06,592 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:31:06,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:31:06,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1704871940, now seen corresponding path program 1 times [2022-11-20 09:31:06,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:31:06,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1898474252] [2022-11-20 09:31:06,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:31:06,594 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 09:31:06,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:31:06,597 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/mathsat -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 09:31:06,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/mathsat -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 09:31:07,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:07,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 1234 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 09:31:07,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:31:07,827 INFO L134 CoverageAnalysis]: Checked inductivity of 859 backedges. 466 proven. 3 refuted. 0 times theorem prover too weak. 390 trivial. 0 not checked. [2022-11-20 09:31:07,827 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:31:08,541 INFO L134 CoverageAnalysis]: Checked inductivity of 859 backedges. 36 proven. 69 refuted. 0 times theorem prover too weak. 754 trivial. 0 not checked. [2022-11-20 09:31:08,542 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:31:08,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1898474252] [2022-11-20 09:31:08,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1898474252] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:31:08,542 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:31:08,542 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-11-20 09:31:08,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567174277] [2022-11-20 09:31:08,543 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:31:08,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 09:31:08,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:31:08,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 09:31:08,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-11-20 09:31:08,545 INFO L87 Difference]: Start difference. First operand 1629 states and 2350 transitions. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 2 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-11-20 09:31:09,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:31:09,727 INFO L93 Difference]: Finished difference Result 3236 states and 4674 transitions. [2022-11-20 09:31:09,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 09:31:09,728 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 2 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 246 [2022-11-20 09:31:09,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:31:09,738 INFO L225 Difference]: With dead ends: 3236 [2022-11-20 09:31:09,739 INFO L226 Difference]: Without dead ends: 1633 [2022-11-20 09:31:09,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 496 GetRequests, 482 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=91, Invalid=149, Unknown=0, NotChecked=0, Total=240 [2022-11-20 09:31:09,747 INFO L413 NwaCegarLoop]: 1548 mSDtfsCounter, 39 mSDsluCounter, 4632 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 6180 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 09:31:09,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 6180 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 09:31:09,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1633 states. [2022-11-20 09:31:09,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1633 to 1633. [2022-11-20 09:31:09,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1633 states, 1199 states have (on average 1.3928273561301083) internal successors, (1670), 1232 states have internal predecessors, (1670), 341 states have call successors, (341), 92 states have call predecessors, (341), 92 states have return successors, (341), 338 states have call predecessors, (341), 341 states have call successors, (341) [2022-11-20 09:31:09,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1633 states to 1633 states and 2352 transitions. [2022-11-20 09:31:09,821 INFO L78 Accepts]: Start accepts. Automaton has 1633 states and 2352 transitions. Word has length 246 [2022-11-20 09:31:09,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:31:09,821 INFO L495 AbstractCegarLoop]: Abstraction has 1633 states and 2352 transitions. [2022-11-20 09:31:09,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 2 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-11-20 09:31:09,822 INFO L276 IsEmpty]: Start isEmpty. Operand 1633 states and 2352 transitions. [2022-11-20 09:31:09,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2022-11-20 09:31:09,829 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:31:09,829 INFO L195 NwaCegarLoop]: trace histogram [32, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:31:09,854 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/mathsat -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 09:31:10,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/mathsat -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 09:31:10,051 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:31:10,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:31:10,052 INFO L85 PathProgramCache]: Analyzing trace with hash 608699012, now seen corresponding path program 2 times [2022-11-20 09:31:10,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:31:10,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1948217481] [2022-11-20 09:31:10,054 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 09:31:10,054 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 09:31:10,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:31:10,055 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/mathsat -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 09:31:10,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/mathsat -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 09:31:10,664 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 09:31:10,665 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:31:10,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 09:31:10,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:31:10,738 INFO L134 CoverageAnalysis]: Checked inductivity of 1135 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1135 trivial. 0 not checked. [2022-11-20 09:31:10,738 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:31:10,738 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:31:10,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1948217481] [2022-11-20 09:31:10,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1948217481] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:31:10,739 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:31:10,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 09:31:10,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450844795] [2022-11-20 09:31:10,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:31:10,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 09:31:10,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:31:10,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 09:31:10,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 09:31:10,741 INFO L87 Difference]: Start difference. First operand 1633 states and 2352 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2022-11-20 09:31:11,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:31:11,347 INFO L93 Difference]: Finished difference Result 2223 states and 3297 transitions. [2022-11-20 09:31:11,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 09:31:11,348 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 254 [2022-11-20 09:31:11,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:31:11,359 INFO L225 Difference]: With dead ends: 2223 [2022-11-20 09:31:11,359 INFO L226 Difference]: Without dead ends: 2221 [2022-11-20 09:31:11,361 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 252 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 09:31:11,362 INFO L413 NwaCegarLoop]: 2217 mSDtfsCounter, 795 mSDsluCounter, 3481 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 826 SdHoareTripleChecker+Valid, 5698 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 09:31:11,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [826 Valid, 5698 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 09:31:11,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2221 states. [2022-11-20 09:31:11,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2221 to 1635. [2022-11-20 09:31:11,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1635 states, 1201 states have (on average 1.392173189009159) internal successors, (1672), 1234 states have internal predecessors, (1672), 341 states have call successors, (341), 92 states have call predecessors, (341), 92 states have return successors, (341), 338 states have call predecessors, (341), 341 states have call successors, (341) [2022-11-20 09:31:11,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1635 states to 1635 states and 2354 transitions. [2022-11-20 09:31:11,449 INFO L78 Accepts]: Start accepts. Automaton has 1635 states and 2354 transitions. Word has length 254 [2022-11-20 09:31:11,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:31:11,450 INFO L495 AbstractCegarLoop]: Abstraction has 1635 states and 2354 transitions. [2022-11-20 09:31:11,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2022-11-20 09:31:11,450 INFO L276 IsEmpty]: Start isEmpty. Operand 1635 states and 2354 transitions. [2022-11-20 09:31:11,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2022-11-20 09:31:11,457 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:31:11,457 INFO L195 NwaCegarLoop]: trace histogram [32, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:31:11,473 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/mathsat -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 09:31:11,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/mathsat -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 09:31:11,672 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:31:11,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:31:11,673 INFO L85 PathProgramCache]: Analyzing trace with hash 1680623549, now seen corresponding path program 1 times [2022-11-20 09:31:11,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:31:11,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [670097654] [2022-11-20 09:31:11,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:31:11,674 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 09:31:11,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:31:11,675 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/mathsat -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 09:31:11,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/mathsat -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 09:31:12,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:12,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 1327 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 09:31:12,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:31:13,232 INFO L134 CoverageAnalysis]: Checked inductivity of 1135 backedges. 646 proven. 21 refuted. 0 times theorem prover too weak. 468 trivial. 0 not checked. [2022-11-20 09:31:13,232 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:31:14,942 INFO L134 CoverageAnalysis]: Checked inductivity of 1135 backedges. 76 proven. 187 refuted. 0 times theorem prover too weak. 872 trivial. 0 not checked. [2022-11-20 09:31:14,943 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:31:14,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [670097654] [2022-11-20 09:31:14,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [670097654] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:31:14,943 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:31:14,944 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-11-20 09:31:14,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992744959] [2022-11-20 09:31:14,944 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:31:14,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 09:31:14,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:31:14,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 09:31:14,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2022-11-20 09:31:14,946 INFO L87 Difference]: Start difference. First operand 1635 states and 2354 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 2 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-11-20 09:31:16,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:31:16,897 INFO L93 Difference]: Finished difference Result 3258 states and 4707 transitions. [2022-11-20 09:31:16,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-20 09:31:16,898 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 2 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 255 [2022-11-20 09:31:16,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:31:16,909 INFO L225 Difference]: With dead ends: 3258 [2022-11-20 09:31:16,909 INFO L226 Difference]: Without dead ends: 1645 [2022-11-20 09:31:16,915 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 515 GetRequests, 492 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=166, Invalid=434, Unknown=0, NotChecked=0, Total=600 [2022-11-20 09:31:16,916 INFO L413 NwaCegarLoop]: 1552 mSDtfsCounter, 74 mSDsluCounter, 13903 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 15455 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-20 09:31:16,916 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 15455 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-20 09:31:16,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1645 states. [2022-11-20 09:31:16,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1645 to 1639. [2022-11-20 09:31:16,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1639 states, 1205 states have (on average 1.391701244813278) internal successors, (1677), 1238 states have internal predecessors, (1677), 341 states have call successors, (341), 92 states have call predecessors, (341), 92 states have return successors, (341), 338 states have call predecessors, (341), 341 states have call successors, (341) [2022-11-20 09:31:16,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1639 states to 1639 states and 2359 transitions. [2022-11-20 09:31:16,991 INFO L78 Accepts]: Start accepts. Automaton has 1639 states and 2359 transitions. Word has length 255 [2022-11-20 09:31:16,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:31:16,991 INFO L495 AbstractCegarLoop]: Abstraction has 1639 states and 2359 transitions. [2022-11-20 09:31:16,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 2 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-11-20 09:31:16,992 INFO L276 IsEmpty]: Start isEmpty. Operand 1639 states and 2359 transitions. [2022-11-20 09:31:16,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2022-11-20 09:31:16,999 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:31:16,999 INFO L195 NwaCegarLoop]: trace histogram [36, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:31:17,031 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/mathsat -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 09:31:17,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/mathsat -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 09:31:17,213 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:31:17,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:31:17,213 INFO L85 PathProgramCache]: Analyzing trace with hash -685559171, now seen corresponding path program 2 times [2022-11-20 09:31:17,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:31:17,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1227336742] [2022-11-20 09:31:17,214 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 09:31:17,215 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 09:31:17,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:31:17,216 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/mathsat -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 09:31:17,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/mathsat -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 09:31:17,777 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 09:31:17,778 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:31:17,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 09:31:17,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:31:17,841 INFO L134 CoverageAnalysis]: Checked inductivity of 1297 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1297 trivial. 0 not checked. [2022-11-20 09:31:17,842 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:31:17,842 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:31:17,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1227336742] [2022-11-20 09:31:17,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1227336742] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:31:17,842 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:31:17,842 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 09:31:17,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542840412] [2022-11-20 09:31:17,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:31:17,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 09:31:17,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:31:17,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 09:31:17,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 09:31:17,844 INFO L87 Difference]: Start difference. First operand 1639 states and 2359 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2022-11-20 09:31:18,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:31:18,381 INFO L93 Difference]: Finished difference Result 2230 states and 3305 transitions. [2022-11-20 09:31:18,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 09:31:18,382 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 259 [2022-11-20 09:31:18,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:31:18,397 INFO L225 Difference]: With dead ends: 2230 [2022-11-20 09:31:18,398 INFO L226 Difference]: Without dead ends: 2228 [2022-11-20 09:31:18,400 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 257 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 09:31:18,400 INFO L413 NwaCegarLoop]: 2154 mSDtfsCounter, 795 mSDsluCounter, 3455 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 826 SdHoareTripleChecker+Valid, 5609 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 09:31:18,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [826 Valid, 5609 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 09:31:18,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2228 states. [2022-11-20 09:31:18,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2228 to 1639. [2022-11-20 09:31:18,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1639 states, 1205 states have (on average 1.391701244813278) internal successors, (1677), 1238 states have internal predecessors, (1677), 341 states have call successors, (341), 92 states have call predecessors, (341), 92 states have return successors, (341), 338 states have call predecessors, (341), 341 states have call successors, (341) [2022-11-20 09:31:18,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1639 states to 1639 states and 2359 transitions. [2022-11-20 09:31:18,496 INFO L78 Accepts]: Start accepts. Automaton has 1639 states and 2359 transitions. Word has length 259 [2022-11-20 09:31:18,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:31:18,497 INFO L495 AbstractCegarLoop]: Abstraction has 1639 states and 2359 transitions. [2022-11-20 09:31:18,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2022-11-20 09:31:18,498 INFO L276 IsEmpty]: Start isEmpty. Operand 1639 states and 2359 transitions. [2022-11-20 09:31:18,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2022-11-20 09:31:18,506 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:31:18,506 INFO L195 NwaCegarLoop]: trace histogram [36, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:31:18,523 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/mathsat -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 09:31:18,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/mathsat -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 09:31:18,722 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:31:18,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:31:18,722 INFO L85 PathProgramCache]: Analyzing trace with hash 427386866, now seen corresponding path program 1 times [2022-11-20 09:31:18,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:31:18,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1129783901] [2022-11-20 09:31:18,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:31:18,723 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 09:31:18,724 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:31:18,725 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/mathsat -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 09:31:18,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/mathsat -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 09:31:20,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:20,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 1386 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 09:31:20,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:31:21,294 INFO L134 CoverageAnalysis]: Checked inductivity of 1297 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 1145 trivial. 0 not checked. [2022-11-20 09:31:21,297 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:31:21,297 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:31:21,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1129783901] [2022-11-20 09:31:21,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1129783901] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:31:21,298 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:31:21,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 09:31:21,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822983586] [2022-11-20 09:31:21,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:31:21,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:31:21,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:31:21,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:31:21,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:31:21,301 INFO L87 Difference]: Start difference. First operand 1639 states and 2359 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-20 09:31:21,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:31:21,431 INFO L93 Difference]: Finished difference Result 3213 states and 4638 transitions. [2022-11-20 09:31:21,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:31:21,432 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 268 [2022-11-20 09:31:21,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:31:21,441 INFO L225 Difference]: With dead ends: 3213 [2022-11-20 09:31:21,441 INFO L226 Difference]: Without dead ends: 1639 [2022-11-20 09:31:21,449 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 266 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 09:31:21,451 INFO L413 NwaCegarLoop]: 1547 mSDtfsCounter, 1481 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1481 SdHoareTripleChecker+Valid, 1547 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 09:31:21,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1481 Valid, 1547 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 09:31:21,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1639 states. [2022-11-20 09:31:21,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1639 to 1639. [2022-11-20 09:31:21,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1639 states, 1205 states have (on average 1.3900414937759336) internal successors, (1675), 1238 states have internal predecessors, (1675), 341 states have call successors, (341), 92 states have call predecessors, (341), 92 states have return successors, (341), 338 states have call predecessors, (341), 341 states have call successors, (341) [2022-11-20 09:31:21,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1639 states to 1639 states and 2357 transitions. [2022-11-20 09:31:21,555 INFO L78 Accepts]: Start accepts. Automaton has 1639 states and 2357 transitions. Word has length 268 [2022-11-20 09:31:21,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:31:21,556 INFO L495 AbstractCegarLoop]: Abstraction has 1639 states and 2357 transitions. [2022-11-20 09:31:21,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-20 09:31:21,556 INFO L276 IsEmpty]: Start isEmpty. Operand 1639 states and 2357 transitions. [2022-11-20 09:31:21,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2022-11-20 09:31:21,563 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:31:21,564 INFO L195 NwaCegarLoop]: trace histogram [36, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:31:21,599 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/mathsat -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 09:31:21,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/mathsat -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 09:31:21,780 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:31:21,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:31:21,781 INFO L85 PathProgramCache]: Analyzing trace with hash -715115600, now seen corresponding path program 1 times [2022-11-20 09:31:21,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:31:21,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [111782692] [2022-11-20 09:31:21,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:31:21,782 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 09:31:21,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:31:21,784 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/mathsat -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 09:31:21,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/mathsat -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 09:31:23,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:23,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 1385 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 09:31:23,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:31:23,495 INFO L134 CoverageAnalysis]: Checked inductivity of 1297 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 1153 trivial. 0 not checked. [2022-11-20 09:31:23,495 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:31:23,495 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:31:23,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [111782692] [2022-11-20 09:31:23,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [111782692] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:31:23,496 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:31:23,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 09:31:23,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425156396] [2022-11-20 09:31:23,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:31:23,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 09:31:23,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:31:23,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 09:31:23,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 09:31:23,498 INFO L87 Difference]: Start difference. First operand 1639 states and 2357 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-20 09:31:23,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:31:23,683 INFO L93 Difference]: Finished difference Result 3217 states and 4638 transitions. [2022-11-20 09:31:23,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 09:31:23,684 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 268 [2022-11-20 09:31:23,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:31:23,693 INFO L225 Difference]: With dead ends: 3217 [2022-11-20 09:31:23,693 INFO L226 Difference]: Without dead ends: 1639 [2022-11-20 09:31:23,698 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 265 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 09:31:23,699 INFO L413 NwaCegarLoop]: 1554 mSDtfsCounter, 1 mSDsluCounter, 3101 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4655 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 09:31:23,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4655 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 09:31:23,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1639 states. [2022-11-20 09:31:23,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1639 to 1639. [2022-11-20 09:31:23,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1639 states, 1205 states have (on average 1.3883817427385892) internal successors, (1673), 1238 states have internal predecessors, (1673), 341 states have call successors, (341), 92 states have call predecessors, (341), 92 states have return successors, (341), 338 states have call predecessors, (341), 341 states have call successors, (341) [2022-11-20 09:31:23,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1639 states to 1639 states and 2355 transitions. [2022-11-20 09:31:23,819 INFO L78 Accepts]: Start accepts. Automaton has 1639 states and 2355 transitions. Word has length 268 [2022-11-20 09:31:23,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:31:23,819 INFO L495 AbstractCegarLoop]: Abstraction has 1639 states and 2355 transitions. [2022-11-20 09:31:23,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-20 09:31:23,821 INFO L276 IsEmpty]: Start isEmpty. Operand 1639 states and 2355 transitions. [2022-11-20 09:31:23,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2022-11-20 09:31:23,826 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:31:23,826 INFO L195 NwaCegarLoop]: trace histogram [36, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:31:23,856 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/mathsat -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 09:31:24,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/mathsat -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 09:31:24,051 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:31:24,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:31:24,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1161059180, now seen corresponding path program 1 times [2022-11-20 09:31:24,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:31:24,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [98893323] [2022-11-20 09:31:24,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:31:24,052 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 09:31:24,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:31:24,053 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/mathsat -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 09:31:24,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/mathsat -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 09:31:25,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:25,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 1393 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-20 09:31:25,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:31:26,017 INFO L134 CoverageAnalysis]: Checked inductivity of 1297 backedges. 148 proven. 0 refuted. 0 times theorem prover too weak. 1149 trivial. 0 not checked. [2022-11-20 09:31:26,017 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:31:26,017 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:31:26,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [98893323] [2022-11-20 09:31:26,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [98893323] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:31:26,018 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:31:26,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 09:31:26,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112270042] [2022-11-20 09:31:26,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:31:26,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 09:31:26,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:31:26,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 09:31:26,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-20 09:31:26,020 INFO L87 Difference]: Start difference. First operand 1639 states and 2355 transitions. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 7 states have internal predecessors, (97), 2 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (23), 4 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-20 09:31:27,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:31:27,015 INFO L93 Difference]: Finished difference Result 3778 states and 5431 transitions. [2022-11-20 09:31:27,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 09:31:27,016 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 7 states have internal predecessors, (97), 2 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (23), 4 states have call predecessors, (23), 2 states have call successors, (23) Word has length 271 [2022-11-20 09:31:27,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:31:27,027 INFO L225 Difference]: With dead ends: 3778 [2022-11-20 09:31:27,027 INFO L226 Difference]: Without dead ends: 2196 [2022-11-20 09:31:27,032 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 263 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2022-11-20 09:31:27,033 INFO L413 NwaCegarLoop]: 1689 mSDtfsCounter, 827 mSDsluCounter, 11607 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 832 SdHoareTripleChecker+Valid, 13296 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 09:31:27,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [832 Valid, 13296 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 09:31:27,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2196 states. [2022-11-20 09:31:27,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2196 to 2194. [2022-11-20 09:31:27,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2194 states, 1603 states have (on average 1.380536494073612) internal successors, (2213), 1648 states have internal predecessors, (2213), 455 states have call successors, (455), 129 states have call predecessors, (455), 135 states have return successors, (475), 453 states have call predecessors, (475), 455 states have call successors, (475) [2022-11-20 09:31:27,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2194 states to 2194 states and 3143 transitions. [2022-11-20 09:31:27,203 INFO L78 Accepts]: Start accepts. Automaton has 2194 states and 3143 transitions. Word has length 271 [2022-11-20 09:31:27,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:31:27,203 INFO L495 AbstractCegarLoop]: Abstraction has 2194 states and 3143 transitions. [2022-11-20 09:31:27,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 7 states have internal predecessors, (97), 2 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (23), 4 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-20 09:31:27,204 INFO L276 IsEmpty]: Start isEmpty. Operand 2194 states and 3143 transitions. [2022-11-20 09:31:27,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2022-11-20 09:31:27,212 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:31:27,212 INFO L195 NwaCegarLoop]: trace histogram [36, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 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] [2022-11-20 09:31:27,243 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/mathsat -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 09:31:27,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/mathsat -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 09:31:27,434 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:31:27,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:31:27,435 INFO L85 PathProgramCache]: Analyzing trace with hash -1089219421, now seen corresponding path program 1 times [2022-11-20 09:31:27,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:31:27,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1888971237] [2022-11-20 09:31:27,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:31:27,436 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 09:31:27,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:31:27,438 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/mathsat -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 09:31:27,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/mathsat -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 09:31:29,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:29,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 1410 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 09:31:29,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:31:30,561 INFO L134 CoverageAnalysis]: Checked inductivity of 1325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1325 trivial. 0 not checked. [2022-11-20 09:31:30,561 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:31:30,561 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:31:30,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1888971237] [2022-11-20 09:31:30,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1888971237] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:31:30,562 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:31:30,562 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:31:30,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079181349] [2022-11-20 09:31:30,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:31:30,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 09:31:30,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:31:30,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 09:31:30,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 09:31:30,564 INFO L87 Difference]: Start difference. First operand 2194 states and 3143 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-20 09:31:33,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:31:33,944 INFO L93 Difference]: Finished difference Result 4370 states and 6386 transitions. [2022-11-20 09:31:33,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 09:31:33,945 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 277 [2022-11-20 09:31:33,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:31:33,963 INFO L225 Difference]: With dead ends: 4370 [2022-11-20 09:31:33,963 INFO L226 Difference]: Without dead ends: 2784 [2022-11-20 09:31:33,969 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 274 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 09:31:33,970 INFO L413 NwaCegarLoop]: 1872 mSDtfsCounter, 1910 mSDsluCounter, 1094 mSDsCounter, 0 mSdLazyCounter, 631 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2011 SdHoareTripleChecker+Valid, 2966 SdHoareTripleChecker+Invalid, 673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 631 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-20 09:31:33,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2011 Valid, 2966 Invalid, 673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 631 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-11-20 09:31:33,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2784 states. [2022-11-20 09:31:34,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2784 to 2195. [2022-11-20 09:31:34,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2195 states, 1604 states have (on average 1.380299251870324) internal successors, (2214), 1649 states have internal predecessors, (2214), 455 states have call successors, (455), 129 states have call predecessors, (455), 135 states have return successors, (475), 453 states have call predecessors, (475), 455 states have call successors, (475) [2022-11-20 09:31:34,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2195 states to 2195 states and 3144 transitions. [2022-11-20 09:31:34,161 INFO L78 Accepts]: Start accepts. Automaton has 2195 states and 3144 transitions. Word has length 277 [2022-11-20 09:31:34,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:31:34,163 INFO L495 AbstractCegarLoop]: Abstraction has 2195 states and 3144 transitions. [2022-11-20 09:31:34,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-20 09:31:34,163 INFO L276 IsEmpty]: Start isEmpty. Operand 2195 states and 3144 transitions. [2022-11-20 09:31:34,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2022-11-20 09:31:34,173 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:31:34,173 INFO L195 NwaCegarLoop]: trace histogram [36, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 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] [2022-11-20 09:31:34,215 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/mathsat -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 09:31:34,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/mathsat -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 09:31:34,390 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:31:34,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:31:34,391 INFO L85 PathProgramCache]: Analyzing trace with hash 25897604, now seen corresponding path program 1 times [2022-11-20 09:31:34,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:31:34,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1285041928] [2022-11-20 09:31:34,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:31:34,392 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 09:31:34,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:31:34,394 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/mathsat -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 09:31:34,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/mathsat -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 09:31:36,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:36,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 1413 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 09:31:36,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:31:36,481 INFO L134 CoverageAnalysis]: Checked inductivity of 1325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1325 trivial. 0 not checked. [2022-11-20 09:31:36,482 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:31:36,482 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:31:36,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1285041928] [2022-11-20 09:31:36,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1285041928] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:31:36,482 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:31:36,482 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 09:31:36,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738671098] [2022-11-20 09:31:36,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:31:36,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 09:31:36,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:31:36,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 09:31:36,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 09:31:36,484 INFO L87 Difference]: Start difference. First operand 2195 states and 3144 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 2 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-20 09:31:37,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:31:37,212 INFO L93 Difference]: Finished difference Result 2791 states and 4098 transitions. [2022-11-20 09:31:37,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 09:31:37,212 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), 2 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 279 [2022-11-20 09:31:37,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:31:37,228 INFO L225 Difference]: With dead ends: 2791 [2022-11-20 09:31:37,229 INFO L226 Difference]: Without dead ends: 2789 [2022-11-20 09:31:37,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 276 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 09:31:37,231 INFO L413 NwaCegarLoop]: 2170 mSDtfsCounter, 1113 mSDsluCounter, 5268 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 211 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1144 SdHoareTripleChecker+Valid, 7438 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 211 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 09:31:37,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1144 Valid, 7438 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [211 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 09:31:37,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2789 states. [2022-11-20 09:31:37,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2789 to 2197. [2022-11-20 09:31:37,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2197 states, 1605 states have (on average 1.3800623052959502) internal successors, (2215), 1650 states have internal predecessors, (2215), 456 states have call successors, (456), 129 states have call predecessors, (456), 135 states have return successors, (476), 454 states have call predecessors, (476), 456 states have call successors, (476) [2022-11-20 09:31:37,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2197 states to 2197 states and 3147 transitions. [2022-11-20 09:31:37,512 INFO L78 Accepts]: Start accepts. Automaton has 2197 states and 3147 transitions. Word has length 279 [2022-11-20 09:31:37,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:31:37,513 INFO L495 AbstractCegarLoop]: Abstraction has 2197 states and 3147 transitions. [2022-11-20 09:31:37,513 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), 2 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-20 09:31:37,513 INFO L276 IsEmpty]: Start isEmpty. Operand 2197 states and 3147 transitions. [2022-11-20 09:31:37,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2022-11-20 09:31:37,522 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:31:37,522 INFO L195 NwaCegarLoop]: trace histogram [36, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 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] [2022-11-20 09:31:37,553 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/mathsat -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 09:31:37,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/mathsat -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 09:31:37,747 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:31:37,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:31:37,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1150412924, now seen corresponding path program 1 times [2022-11-20 09:31:37,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:31:37,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1270128598] [2022-11-20 09:31:37,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:31:37,750 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 09:31:37,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:31:37,751 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/mathsat -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 09:31:37,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/mathsat -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 09:31:39,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:39,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 1452 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-20 09:31:39,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:31:41,066 INFO L134 CoverageAnalysis]: Checked inductivity of 1325 backedges. 161 proven. 18 refuted. 0 times theorem prover too weak. 1146 trivial. 0 not checked. [2022-11-20 09:31:41,066 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:31:43,593 INFO L134 CoverageAnalysis]: Checked inductivity of 1325 backedges. 23 proven. 6 refuted. 0 times theorem prover too weak. 1296 trivial. 0 not checked. [2022-11-20 09:31:43,594 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:31:43,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1270128598] [2022-11-20 09:31:43,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1270128598] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:31:43,594 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:31:43,595 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 23 [2022-11-20 09:31:43,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578093662] [2022-11-20 09:31:43,595 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:31:43,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-20 09:31:43,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:31:43,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-20 09:31:43,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2022-11-20 09:31:43,597 INFO L87 Difference]: Start difference. First operand 2197 states and 3147 transitions. Second operand has 23 states, 22 states have (on average 7.2272727272727275) internal successors, (159), 17 states have internal predecessors, (159), 6 states have call successors, (31), 3 states have call predecessors, (31), 8 states have return successors, (33), 11 states have call predecessors, (33), 6 states have call successors, (33) [2022-11-20 09:31:54,859 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 09:31:55,988 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 09:31:57,017 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 09:31:58,105 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 09:32:02,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:32:02,813 INFO L93 Difference]: Finished difference Result 3792 states and 5454 transitions. [2022-11-20 09:32:02,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-20 09:32:02,814 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 7.2272727272727275) internal successors, (159), 17 states have internal predecessors, (159), 6 states have call successors, (31), 3 states have call predecessors, (31), 8 states have return successors, (33), 11 states have call predecessors, (33), 6 states have call successors, (33) Word has length 287 [2022-11-20 09:32:02,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:32:02,830 INFO L225 Difference]: With dead ends: 3792 [2022-11-20 09:32:02,830 INFO L226 Difference]: Without dead ends: 2203 [2022-11-20 09:32:02,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 590 GetRequests, 555 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=151, Invalid=1181, Unknown=0, NotChecked=0, Total=1332 [2022-11-20 09:32:02,838 INFO L413 NwaCegarLoop]: 2196 mSDtfsCounter, 2885 mSDsluCounter, 30489 mSDsCounter, 0 mSdLazyCounter, 1850 mSolverCounterSat, 626 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2888 SdHoareTripleChecker+Valid, 32685 SdHoareTripleChecker+Invalid, 2476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 626 IncrementalHoareTripleChecker+Valid, 1850 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.2s IncrementalHoareTripleChecker+Time [2022-11-20 09:32:02,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2888 Valid, 32685 Invalid, 2476 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [626 Valid, 1850 Invalid, 0 Unknown, 0 Unchecked, 17.2s Time] [2022-11-20 09:32:02,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2203 states. [2022-11-20 09:32:03,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2203 to 2197. [2022-11-20 09:32:03,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2197 states, 1605 states have (on average 1.3794392523364487) internal successors, (2214), 1650 states have internal predecessors, (2214), 456 states have call successors, (456), 129 states have call predecessors, (456), 135 states have return successors, (476), 454 states have call predecessors, (476), 456 states have call successors, (476) [2022-11-20 09:32:03,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2197 states to 2197 states and 3146 transitions. [2022-11-20 09:32:03,162 INFO L78 Accepts]: Start accepts. Automaton has 2197 states and 3146 transitions. Word has length 287 [2022-11-20 09:32:03,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:32:03,163 INFO L495 AbstractCegarLoop]: Abstraction has 2197 states and 3146 transitions. [2022-11-20 09:32:03,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 7.2272727272727275) internal successors, (159), 17 states have internal predecessors, (159), 6 states have call successors, (31), 3 states have call predecessors, (31), 8 states have return successors, (33), 11 states have call predecessors, (33), 6 states have call successors, (33) [2022-11-20 09:32:03,163 INFO L276 IsEmpty]: Start isEmpty. Operand 2197 states and 3146 transitions. [2022-11-20 09:32:03,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2022-11-20 09:32:03,176 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:32:03,176 INFO L195 NwaCegarLoop]: trace histogram [36, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 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] [2022-11-20 09:32:03,220 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/mathsat -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 09:32:03,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/mathsat -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 09:32:03,404 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:32:03,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:32:03,405 INFO L85 PathProgramCache]: Analyzing trace with hash -973786762, now seen corresponding path program 1 times [2022-11-20 09:32:03,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:32:03,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1355421056] [2022-11-20 09:32:03,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:03,407 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 09:32:03,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:32:03,410 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/mathsat -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 09:32:03,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/mathsat -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 09:32:05,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:05,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 1455 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 09:32:05,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:32:07,051 INFO L134 CoverageAnalysis]: Checked inductivity of 1325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1325 trivial. 0 not checked. [2022-11-20 09:32:07,051 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:32:07,051 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:32:07,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1355421056] [2022-11-20 09:32:07,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1355421056] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:32:07,052 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:32:07,052 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:32:07,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862629788] [2022-11-20 09:32:07,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:32:07,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 09:32:07,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:32:07,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 09:32:07,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 09:32:07,055 INFO L87 Difference]: Start difference. First operand 2197 states and 3146 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-20 09:32:11,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:32:11,603 INFO L93 Difference]: Finished difference Result 4378 states and 6394 transitions. [2022-11-20 09:32:11,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 09:32:11,604 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 289 [2022-11-20 09:32:11,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:32:11,621 INFO L225 Difference]: With dead ends: 4378 [2022-11-20 09:32:11,621 INFO L226 Difference]: Without dead ends: 2789 [2022-11-20 09:32:11,627 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 286 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 09:32:11,628 INFO L413 NwaCegarLoop]: 2092 mSDtfsCounter, 1894 mSDsluCounter, 1089 mSDsCounter, 0 mSdLazyCounter, 680 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1995 SdHoareTripleChecker+Valid, 3181 SdHoareTripleChecker+Invalid, 684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-20 09:32:11,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1995 Valid, 3181 Invalid, 684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 680 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-11-20 09:32:11,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2789 states. [2022-11-20 09:32:11,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2789 to 2201. [2022-11-20 09:32:11,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2201 states, 1609 states have (on average 1.3791174642635178) internal successors, (2219), 1654 states have internal predecessors, (2219), 456 states have call successors, (456), 129 states have call predecessors, (456), 135 states have return successors, (476), 454 states have call predecessors, (476), 456 states have call successors, (476) [2022-11-20 09:32:11,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2201 states to 2201 states and 3151 transitions. [2022-11-20 09:32:11,996 INFO L78 Accepts]: Start accepts. Automaton has 2201 states and 3151 transitions. Word has length 289 [2022-11-20 09:32:11,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:32:11,997 INFO L495 AbstractCegarLoop]: Abstraction has 2201 states and 3151 transitions. [2022-11-20 09:32:11,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-20 09:32:11,997 INFO L276 IsEmpty]: Start isEmpty. Operand 2201 states and 3151 transitions. [2022-11-20 09:32:12,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2022-11-20 09:32:12,008 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:32:12,008 INFO L195 NwaCegarLoop]: trace histogram [36, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 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] [2022-11-20 09:32:12,048 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/mathsat -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 09:32:12,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/mathsat -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 09:32:12,230 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:32:12,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:32:12,231 INFO L85 PathProgramCache]: Analyzing trace with hash 444728517, now seen corresponding path program 1 times [2022-11-20 09:32:12,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:32:12,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [902656431] [2022-11-20 09:32:12,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:12,232 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 09:32:12,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:32:12,235 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/mathsat -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 09:32:12,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/mathsat -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 09:32:14,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:14,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 1460 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 09:32:14,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:32:16,050 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1325 trivial. 0 not checked. [2022-11-20 09:32:16,051 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:32:16,744 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1325 trivial. 0 not checked. [2022-11-20 09:32:16,744 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:32:16,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [902656431] [2022-11-20 09:32:16,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [902656431] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:32:16,746 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:32:16,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 8 [2022-11-20 09:32:16,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381264307] [2022-11-20 09:32:16,747 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:32:16,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 09:32:16,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:32:16,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 09:32:16,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-20 09:32:16,749 INFO L87 Difference]: Start difference. First operand 2201 states and 3151 transitions. Second operand has 8 states, 8 states have (on average 23.625) internal successors, (189), 8 states have internal predecessors, (189), 4 states have call successors, (46), 3 states have call predecessors, (46), 3 states have return successors, (46), 4 states have call predecessors, (46), 4 states have call successors, (46) [2022-11-20 09:32:25,540 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 09:32:27,072 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 09:32:34,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:32:34,153 INFO L93 Difference]: Finished difference Result 6135 states and 9206 transitions. [2022-11-20 09:32:34,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 09:32:34,154 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 23.625) internal successors, (189), 8 states have internal predecessors, (189), 4 states have call successors, (46), 3 states have call predecessors, (46), 3 states have return successors, (46), 4 states have call predecessors, (46), 4 states have call successors, (46) Word has length 292 [2022-11-20 09:32:34,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:32:34,183 INFO L225 Difference]: With dead ends: 6135 [2022-11-20 09:32:34,183 INFO L226 Difference]: Without dead ends: 4542 [2022-11-20 09:32:34,190 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 584 GetRequests, 576 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 09:32:34,190 INFO L413 NwaCegarLoop]: 2757 mSDtfsCounter, 5060 mSDsluCounter, 5087 mSDsCounter, 0 mSdLazyCounter, 3202 mSolverCounterSat, 1256 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5262 SdHoareTripleChecker+Valid, 7844 SdHoareTripleChecker+Invalid, 4458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1256 IncrementalHoareTripleChecker+Valid, 3202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.5s IncrementalHoareTripleChecker+Time [2022-11-20 09:32:34,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5262 Valid, 7844 Invalid, 4458 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1256 Valid, 3202 Invalid, 0 Unknown, 0 Unchecked, 16.5s Time] [2022-11-20 09:32:34,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4542 states. [2022-11-20 09:32:34,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4542 to 2208. [2022-11-20 09:32:34,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2208 states, 1616 states have (on average 1.3787128712871286) internal successors, (2228), 1661 states have internal predecessors, (2228), 456 states have call successors, (456), 129 states have call predecessors, (456), 135 states have return successors, (476), 454 states have call predecessors, (476), 456 states have call successors, (476) [2022-11-20 09:32:34,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2208 states to 2208 states and 3160 transitions. [2022-11-20 09:32:34,575 INFO L78 Accepts]: Start accepts. Automaton has 2208 states and 3160 transitions. Word has length 292 [2022-11-20 09:32:34,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:32:34,576 INFO L495 AbstractCegarLoop]: Abstraction has 2208 states and 3160 transitions. [2022-11-20 09:32:34,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.625) internal successors, (189), 8 states have internal predecessors, (189), 4 states have call successors, (46), 3 states have call predecessors, (46), 3 states have return successors, (46), 4 states have call predecessors, (46), 4 states have call successors, (46) [2022-11-20 09:32:34,576 INFO L276 IsEmpty]: Start isEmpty. Operand 2208 states and 3160 transitions. [2022-11-20 09:32:34,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2022-11-20 09:32:34,587 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:32:34,587 INFO L195 NwaCegarLoop]: trace histogram [36, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:32:34,626 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/mathsat -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 09:32:34,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/mathsat -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 09:32:34,816 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:32:34,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:32:34,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1145995311, now seen corresponding path program 1 times [2022-11-20 09:32:34,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:32:34,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1227867921] [2022-11-20 09:32:34,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:34,817 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 09:32:34,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:32:34,818 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/mathsat -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 09:32:34,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/mathsat -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 09:32:37,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:37,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 1492 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 09:32:37,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:32:37,335 INFO L134 CoverageAnalysis]: Checked inductivity of 1337 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1337 trivial. 0 not checked. [2022-11-20 09:32:37,335 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:32:37,335 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:32:37,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1227867921] [2022-11-20 09:32:37,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1227867921] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:32:37,336 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:32:37,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 09:32:37,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438254503] [2022-11-20 09:32:37,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:32:37,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 09:32:37,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:32:37,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 09:32:37,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 09:32:37,338 INFO L87 Difference]: Start difference. First operand 2208 states and 3160 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-20 09:32:38,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:32:38,620 INFO L93 Difference]: Finished difference Result 3288 states and 4881 transitions. [2022-11-20 09:32:38,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 09:32:38,621 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 301 [2022-11-20 09:32:38,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:32:38,641 INFO L225 Difference]: With dead ends: 3288 [2022-11-20 09:32:38,642 INFO L226 Difference]: Without dead ends: 3286 [2022-11-20 09:32:38,644 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 298 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 09:32:38,645 INFO L413 NwaCegarLoop]: 2306 mSDtfsCounter, 1541 mSDsluCounter, 5829 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 259 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1643 SdHoareTripleChecker+Valid, 8135 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 09:32:38,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1643 Valid, 8135 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [259 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 09:32:38,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3286 states. [2022-11-20 09:32:39,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3286 to 2208. [2022-11-20 09:32:39,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2208 states, 1616 states have (on average 1.3787128712871286) internal successors, (2228), 1660 states have internal predecessors, (2228), 456 states have call successors, (456), 129 states have call predecessors, (456), 135 states have return successors, (476), 454 states have call predecessors, (476), 456 states have call successors, (476) [2022-11-20 09:32:39,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2208 states to 2208 states and 3160 transitions. [2022-11-20 09:32:39,124 INFO L78 Accepts]: Start accepts. Automaton has 2208 states and 3160 transitions. Word has length 301 [2022-11-20 09:32:39,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:32:39,125 INFO L495 AbstractCegarLoop]: Abstraction has 2208 states and 3160 transitions. [2022-11-20 09:32:39,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-20 09:32:39,126 INFO L276 IsEmpty]: Start isEmpty. Operand 2208 states and 3160 transitions. [2022-11-20 09:32:39,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2022-11-20 09:32:39,140 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:32:39,140 INFO L195 NwaCegarLoop]: trace histogram [36, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:32:39,186 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-20 09:32:39,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/mathsat -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 09:32:39,355 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:32:39,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:32:39,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1270962834, now seen corresponding path program 1 times [2022-11-20 09:32:39,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:32:39,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [569462362] [2022-11-20 09:32:39,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:39,357 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 09:32:39,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:32:39,359 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/mathsat -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 09:32:39,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-20 09:32:41,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:42,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 1604 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 09:32:42,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:32:42,112 INFO L134 CoverageAnalysis]: Checked inductivity of 1340 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1337 trivial. 0 not checked. [2022-11-20 09:32:42,112 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:32:42,112 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:32:42,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [569462362] [2022-11-20 09:32:42,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [569462362] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:32:42,113 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:32:42,113 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 09:32:42,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547688034] [2022-11-20 09:32:42,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:32:42,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 09:32:42,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:32:42,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 09:32:42,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 09:32:42,115 INFO L87 Difference]: Start difference. First operand 2208 states and 3160 transitions. Second operand has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-11-20 09:32:43,993 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 09:32:44,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:32:44,855 INFO L93 Difference]: Finished difference Result 4738 states and 6958 transitions. [2022-11-20 09:32:44,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 09:32:44,858 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 323 [2022-11-20 09:32:44,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:32:44,876 INFO L225 Difference]: With dead ends: 4738 [2022-11-20 09:32:44,876 INFO L226 Difference]: Without dead ends: 3138 [2022-11-20 09:32:44,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 321 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 09:32:44,883 INFO L413 NwaCegarLoop]: 2229 mSDtfsCounter, 900 mSDsluCounter, 3690 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 973 SdHoareTripleChecker+Valid, 5919 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-20 09:32:44,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [973 Valid, 5919 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-20 09:32:44,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3138 states. [2022-11-20 09:32:45,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3138 to 2210. [2022-11-20 09:32:45,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2210 states, 1618 states have (on average 1.3782447466007417) internal successors, (2230), 1662 states have internal predecessors, (2230), 456 states have call successors, (456), 129 states have call predecessors, (456), 135 states have return successors, (476), 454 states have call predecessors, (476), 456 states have call successors, (476) [2022-11-20 09:32:45,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2210 states to 2210 states and 3162 transitions. [2022-11-20 09:32:45,376 INFO L78 Accepts]: Start accepts. Automaton has 2210 states and 3162 transitions. Word has length 323 [2022-11-20 09:32:45,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:32:45,377 INFO L495 AbstractCegarLoop]: Abstraction has 2210 states and 3162 transitions. [2022-11-20 09:32:45,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-11-20 09:32:45,377 INFO L276 IsEmpty]: Start isEmpty. Operand 2210 states and 3162 transitions. [2022-11-20 09:32:45,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2022-11-20 09:32:45,389 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:32:45,390 INFO L195 NwaCegarLoop]: trace histogram [36, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:32:45,438 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-20 09:32:45,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/mathsat -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 09:32:45,614 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:32:45,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:32:45,615 INFO L85 PathProgramCache]: Analyzing trace with hash 923825230, now seen corresponding path program 1 times [2022-11-20 09:32:45,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:32:45,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [835830109] [2022-11-20 09:32:45,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:45,617 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 09:32:45,617 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:32:45,618 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/mathsat -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 09:32:45,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-20 09:32:48,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:48,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 1756 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 09:32:48,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:32:48,740 INFO L134 CoverageAnalysis]: Checked inductivity of 1331 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1328 trivial. 0 not checked. [2022-11-20 09:32:48,741 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:32:48,741 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:32:48,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [835830109] [2022-11-20 09:32:48,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [835830109] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:32:48,741 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:32:48,741 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:32:48,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889852823] [2022-11-20 09:32:48,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:32:48,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:32:48,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:32:48,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:32:48,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:32:48,746 INFO L87 Difference]: Start difference. First operand 2210 states and 3162 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-20 09:32:50,444 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 09:32:50,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:32:50,580 INFO L93 Difference]: Finished difference Result 4290 states and 6240 transitions. [2022-11-20 09:32:50,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:32:50,596 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 332 [2022-11-20 09:32:50,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:32:50,611 INFO L225 Difference]: With dead ends: 4290 [2022-11-20 09:32:50,611 INFO L226 Difference]: Without dead ends: 2688 [2022-11-20 09:32:50,618 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 330 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 09:32:50,619 INFO L413 NwaCegarLoop]: 2046 mSDtfsCounter, 352 mSDsluCounter, 1606 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 426 SdHoareTripleChecker+Valid, 3652 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-20 09:32:50,619 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [426 Valid, 3652 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-20 09:32:50,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2688 states. [2022-11-20 09:32:51,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2688 to 2212. [2022-11-20 09:32:51,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2212 states, 1620 states have (on average 1.3777777777777778) internal successors, (2232), 1664 states have internal predecessors, (2232), 456 states have call successors, (456), 129 states have call predecessors, (456), 135 states have return successors, (476), 454 states have call predecessors, (476), 456 states have call successors, (476) [2022-11-20 09:32:51,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2212 states to 2212 states and 3164 transitions. [2022-11-20 09:32:51,225 INFO L78 Accepts]: Start accepts. Automaton has 2212 states and 3164 transitions. Word has length 332 [2022-11-20 09:32:51,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:32:51,226 INFO L495 AbstractCegarLoop]: Abstraction has 2212 states and 3164 transitions. [2022-11-20 09:32:51,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-20 09:32:51,227 INFO L276 IsEmpty]: Start isEmpty. Operand 2212 states and 3164 transitions. [2022-11-20 09:32:51,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2022-11-20 09:32:51,245 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:32:51,246 INFO L195 NwaCegarLoop]: trace histogram [36, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:32:51,293 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-20 09:32:51,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/mathsat -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 09:32:51,466 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:32:51,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:32:51,467 INFO L85 PathProgramCache]: Analyzing trace with hash -974865627, now seen corresponding path program 1 times [2022-11-20 09:32:51,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:32:51,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [341622127] [2022-11-20 09:32:51,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:51,470 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 09:32:51,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:32:51,472 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/mathsat -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 09:32:51,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-20 09:32:54,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:54,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 1818 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 09:32:54,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:32:54,909 INFO L134 CoverageAnalysis]: Checked inductivity of 1343 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 1334 trivial. 0 not checked. [2022-11-20 09:32:54,910 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:32:54,910 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:32:54,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [341622127] [2022-11-20 09:32:54,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [341622127] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:32:54,911 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:32:54,911 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 09:32:54,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019103725] [2022-11-20 09:32:54,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:32:54,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 09:32:54,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:32:54,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 09:32:54,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 09:32:54,914 INFO L87 Difference]: Start difference. First operand 2212 states and 3164 transitions. Second operand has 6 states, 6 states have (on average 21.5) internal successors, (129), 5 states have internal predecessors, (129), 2 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (30), 3 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-20 09:32:57,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:32:57,363 INFO L93 Difference]: Finished difference Result 4906 states and 7213 transitions. [2022-11-20 09:32:57,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 09:32:57,364 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.5) internal successors, (129), 5 states have internal predecessors, (129), 2 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (30), 3 states have call predecessors, (30), 2 states have call successors, (30) Word has length 340 [2022-11-20 09:32:57,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:32:57,381 INFO L225 Difference]: With dead ends: 4906 [2022-11-20 09:32:57,381 INFO L226 Difference]: Without dead ends: 3302 [2022-11-20 09:32:57,388 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 336 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 09:32:57,389 INFO L413 NwaCegarLoop]: 2300 mSDtfsCounter, 1176 mSDsluCounter, 8433 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1279 SdHoareTripleChecker+Valid, 10733 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-20 09:32:57,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1279 Valid, 10733 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-20 09:32:57,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3302 states. [2022-11-20 09:32:57,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3302 to 2215. [2022-11-20 09:32:57,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2215 states, 1623 states have (on average 1.3770794824399262) internal successors, (2235), 1666 states have internal predecessors, (2235), 456 states have call successors, (456), 129 states have call predecessors, (456), 135 states have return successors, (476), 455 states have call predecessors, (476), 456 states have call successors, (476) [2022-11-20 09:32:57,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2215 states to 2215 states and 3167 transitions. [2022-11-20 09:32:57,819 INFO L78 Accepts]: Start accepts. Automaton has 2215 states and 3167 transitions. Word has length 340 [2022-11-20 09:32:57,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:32:57,821 INFO L495 AbstractCegarLoop]: Abstraction has 2215 states and 3167 transitions. [2022-11-20 09:32:57,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.5) internal successors, (129), 5 states have internal predecessors, (129), 2 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (30), 3 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-20 09:32:57,821 INFO L276 IsEmpty]: Start isEmpty. Operand 2215 states and 3167 transitions. [2022-11-20 09:32:57,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2022-11-20 09:32:57,834 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:32:57,835 INFO L195 NwaCegarLoop]: trace histogram [36, 9, 9, 9, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:32:57,889 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-20 09:32:58,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/mathsat -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 09:32:58,063 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:32:58,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:32:58,063 INFO L85 PathProgramCache]: Analyzing trace with hash 797867278, now seen corresponding path program 2 times [2022-11-20 09:32:58,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:32:58,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2008731551] [2022-11-20 09:32:58,065 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 09:32:58,065 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 09:32:58,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:32:58,067 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/mathsat -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 09:32:58,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-20 09:32:59,422 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 09:32:59,423 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:32:59,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 624 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 09:32:59,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:32:59,494 INFO L134 CoverageAnalysis]: Checked inductivity of 1377 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1377 trivial. 0 not checked. [2022-11-20 09:32:59,495 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:32:59,495 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:32:59,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2008731551] [2022-11-20 09:32:59,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2008731551] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:32:59,495 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:32:59,495 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:32:59,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820796365] [2022-11-20 09:32:59,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:32:59,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:32:59,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:32:59,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:32:59,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:32:59,498 INFO L87 Difference]: Start difference. First operand 2215 states and 3167 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-20 09:32:59,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:32:59,844 INFO L93 Difference]: Finished difference Result 4368 states and 6287 transitions. [2022-11-20 09:32:59,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:32:59,845 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 346 [2022-11-20 09:32:59,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:32:59,854 INFO L225 Difference]: With dead ends: 4368 [2022-11-20 09:32:59,854 INFO L226 Difference]: Without dead ends: 2218 [2022-11-20 09:32:59,860 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 344 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:32:59,861 INFO L413 NwaCegarLoop]: 1548 mSDtfsCounter, 0 mSDsluCounter, 1541 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3089 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 09:32:59,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3089 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 09:32:59,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2218 states. [2022-11-20 09:33:00,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2218 to 2215. [2022-11-20 09:33:00,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2215 states, 1623 states have (on average 1.3715341959334566) internal successors, (2226), 1666 states have internal predecessors, (2226), 456 states have call successors, (456), 129 states have call predecessors, (456), 135 states have return successors, (476), 455 states have call predecessors, (476), 456 states have call successors, (476) [2022-11-20 09:33:00,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2215 states to 2215 states and 3158 transitions. [2022-11-20 09:33:00,357 INFO L78 Accepts]: Start accepts. Automaton has 2215 states and 3158 transitions. Word has length 346 [2022-11-20 09:33:00,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:33:00,358 INFO L495 AbstractCegarLoop]: Abstraction has 2215 states and 3158 transitions. [2022-11-20 09:33:00,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-20 09:33:00,359 INFO L276 IsEmpty]: Start isEmpty. Operand 2215 states and 3158 transitions. [2022-11-20 09:33:00,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2022-11-20 09:33:00,373 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:33:00,374 INFO L195 NwaCegarLoop]: trace histogram [36, 9, 9, 9, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:33:00,404 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-11-20 09:33:00,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/mathsat -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 09:33:00,591 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:33:00,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:33:00,591 INFO L85 PathProgramCache]: Analyzing trace with hash 273055129, now seen corresponding path program 1 times [2022-11-20 09:33:00,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:33:00,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [302210678] [2022-11-20 09:33:00,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:33:00,593 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 09:33:00,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:33:00,594 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/mathsat -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 09:33:00,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48819e4-07d7-40d6-bedb-31d5353a26ae/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-11-20 09:33:17,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:17,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 1841 conjuncts, 177 conjunts are in the unsatisfiable core [2022-11-20 09:33:17,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:33:17,364 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 09:33:18,641 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 09:33:18,956 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 09:33:19,804 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 09:33:20,628 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-20 09:33:20,629 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-20 09:33:21,172 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-11-20 09:33:21,173 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 11 [2022-11-20 09:33:21,553 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 09:33:21,873 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 7 treesize of output 6 [2022-11-20 09:33:22,654 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 09:33:23,612 INFO L321 Elim1Store]: treesize reduction 42, result has 26.3 percent of original size [2022-11-20 09:33:23,612 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 3 case distinctions, treesize of input 21 treesize of output 32 [2022-11-20 09:33:26,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:33:26,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:33:27,007 INFO L321 Elim1Store]: treesize reduction 112, result has 20.6 percent of original size [2022-11-20 09:33:27,008 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 31 treesize of output 51 [2022-11-20 09:33:28,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:33:28,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:33:28,540 INFO L321 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2022-11-20 09:33:28,541 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 29 treesize of output 21 [2022-11-20 09:33:56,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:33:56,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:33:56,910 INFO L321 Elim1Store]: treesize reduction 64, result has 21.0 percent of original size [2022-11-20 09:33:56,910 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 34 treesize of output 40 [2022-11-20 09:34:02,394 WARN L233 SmtUtils]: Spent 5.02s on a formula simplification. DAG size of input: 47 DAG size of output: 35 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 09:34:08,675 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 63 [2022-11-20 09:34:08,701 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:34:08,702 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:34:08,703 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:34:08,708 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 81 [2022-11-20 09:35:21,632 WARN L233 SmtUtils]: Spent 6.25s on a formula simplification that was a NOOP. DAG size: 97 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 09:35:22,172 INFO L321 Elim1Store]: treesize reduction 82, result has 29.9 percent of original size [2022-11-20 09:35:22,173 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 124 treesize of output 140 [2022-11-20 09:35:22,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:35:22,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:35:22,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:35:22,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:35:22,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:35:22,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:35:22,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:35:22,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:35:22,647 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 36 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 100 [2022-11-20 09:35:23,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:35:23,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:35:23,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:35:23,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:35:23,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:35:23,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:35:23,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:35:23,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:35:23,185 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 36 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 100 [2022-11-20 09:35:30,292 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 09:35:30,387 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 09:36:29,764 WARN L233 SmtUtils]: Spent 55.64s on a formula simplification that was a NOOP. DAG size: 174 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 09:36:31,945 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 09:36:39,499 WARN L233 SmtUtils]: Spent 7.48s on a formula simplification. DAG size of input: 341 DAG size of output: 94 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-20 09:36:39,501 INFO L321 Elim1Store]: treesize reduction 590, result has 22.5 percent of original size [2022-11-20 09:36:39,505 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 3 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 75 case distinctions, treesize of input 565 treesize of output 667 [2022-11-20 09:42:23,074 WARN L233 SmtUtils]: Spent 11.36s on a formula simplification. DAG size of input: 580 DAG size of output: 580 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-20 09:44:27,519 WARN L233 SmtUtils]: Spent 5.70s on a formula simplification that was a NOOP. DAG size: 576 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)