./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/square_8+soft_float_4-2a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- 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_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/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_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/square_8+soft_float_4-2a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/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 32bit --witnessprinter.graph.data.programhash 2e745a133311e60f1a9e202bf4fcb9b524a944d790f4c1df2987f4b8dfd5e08b --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 12:32:25,253 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:32:25,257 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:32:25,293 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:32:25,299 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:32:25,304 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:32:25,308 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:32:25,310 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:32:25,312 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:32:25,313 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:32:25,314 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:32:25,315 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:32:25,316 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:32:25,317 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:32:25,318 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:32:25,324 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:32:25,326 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:32:25,335 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:32:25,339 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:32:25,346 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:32:25,348 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:32:25,352 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:32:25,354 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:32:25,355 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:32:25,359 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:32:25,359 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:32:25,359 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:32:25,361 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:32:25,361 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:32:25,362 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:32:25,368 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:32:25,369 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:32:25,371 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:32:25,372 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:32:25,374 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:32:25,374 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:32:25,375 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:32:25,375 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:32:25,376 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:32:25,380 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:32:25,381 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:32:25,382 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 12:32:25,436 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:32:25,436 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:32:25,437 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:32:25,437 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:32:25,438 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:32:25,439 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:32:25,439 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:32:25,440 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:32:25,440 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:32:25,440 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:32:25,441 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 12:32:25,442 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:32:25,442 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 12:32:25,442 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:32:25,442 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:32:25,443 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:32:25,443 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:32:25,443 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 12:32:25,443 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:32:25,443 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:32:25,444 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:32:25,444 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:32:25,444 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:32:25,444 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:32:25,445 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:32:25,445 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:32:25,445 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:32:25,445 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:32:25,445 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 12:32:25,446 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 12:32:25,446 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:32:25,446 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:32:25,447 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:32:25,447 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_512485d2-23bf-4e3c-995c-378edd8c23be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2e745a133311e60f1a9e202bf4fcb9b524a944d790f4c1df2987f4b8dfd5e08b [2022-11-20 12:32:25,776 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:32:25,808 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:32:25,811 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:32:25,813 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:32:25,813 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:32:25,815 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/combinations/square_8+soft_float_4-2a.c.cil.c [2022-11-20 12:32:29,520 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:32:29,867 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:32:29,868 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/sv-benchmarks/c/combinations/square_8+soft_float_4-2a.c.cil.c [2022-11-20 12:32:29,886 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/data/c50922bb1/d565e6ec9c6a45f28b36fc1853a7574a/FLAG98d3a94cb [2022-11-20 12:32:29,909 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/data/c50922bb1/d565e6ec9c6a45f28b36fc1853a7574a [2022-11-20 12:32:29,913 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:32:29,917 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:32:29,919 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:32:29,919 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:32:29,924 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:32:29,925 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:32:29" (1/1) ... [2022-11-20 12:32:29,926 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@361e9acc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:32:29, skipping insertion in model container [2022-11-20 12:32:29,927 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:32:29" (1/1) ... [2022-11-20 12:32:29,938 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:32:29,997 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:32:30,250 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_512485d2-23bf-4e3c-995c-378edd8c23be/sv-benchmarks/c/combinations/square_8+soft_float_4-2a.c.cil.c[1995,2008] [2022-11-20 12:32:30,257 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_512485d2-23bf-4e3c-995c-378edd8c23be/sv-benchmarks/c/combinations/square_8+soft_float_4-2a.c.cil.c[2389,2402] [2022-11-20 12:32:30,306 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:728) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:282) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1413) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:220) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1087) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:232) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1087) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:232) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1087) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:232) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionDefinition(FunctionHandler.java:371) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1489) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:155) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.processTUchild(CHandler.java:3314) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2388) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:600) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:134) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.translate(MainTranslator.java:192) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.run(MainTranslator.java:115) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.(MainTranslator.java:93) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver.finish(CACSL2BoogieTranslatorObserver.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-20 12:32:30,318 INFO L158 Benchmark]: Toolchain (without parser) took 399.54ms. Allocated memory is still 146.8MB. Free memory was 115.8MB in the beginning and 106.1MB in the end (delta: 9.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-20 12:32:30,319 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 111.1MB. Free memory was 65.0MB in the beginning and 64.7MB in the end (delta: 241.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 12:32:30,321 INFO L158 Benchmark]: CACSL2BoogieTranslator took 396.70ms. Allocated memory is still 146.8MB. Free memory was 115.8MB in the beginning and 106.1MB in the end (delta: 9.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-20 12:32:30,323 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 111.1MB. Free memory was 65.0MB in the beginning and 64.7MB in the end (delta: 241.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 396.70ms. Allocated memory is still 146.8MB. Free memory was 115.8MB in the beginning and 106.1MB in the end (delta: 9.7MB). Peak memory consumption was 8.4MB. 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_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/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_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/square_8+soft_float_4-2a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/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 32bit --witnessprinter.graph.data.programhash 2e745a133311e60f1a9e202bf4fcb9b524a944d790f4c1df2987f4b8dfd5e08b --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 12:32:32,991 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:32:32,994 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:32:33,037 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:32:33,038 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:32:33,044 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:32:33,048 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:32:33,055 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:32:33,059 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:32:33,063 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:32:33,065 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:32:33,068 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:32:33,069 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:32:33,078 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:32:33,079 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:32:33,083 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:32:33,084 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:32:33,090 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:32:33,092 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:32:33,094 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:32:33,097 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:32:33,104 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:32:33,105 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:32:33,108 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:32:33,118 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:32:33,119 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:32:33,119 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:32:33,121 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:32:33,121 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:32:33,125 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:32:33,125 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:32:33,126 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:32:33,129 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:32:33,148 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:32:33,149 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:32:33,150 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:32:33,151 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:32:33,151 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:32:33,151 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:32:33,153 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:32:33,153 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:32:33,155 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-11-20 12:32:33,203 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:32:33,203 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:32:33,203 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:32:33,204 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:32:33,205 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:32:33,205 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:32:33,206 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:32:33,206 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:32:33,206 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:32:33,206 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:32:33,207 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 12:32:33,207 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 12:32:33,207 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:32:33,207 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:32:33,208 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:32:33,208 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:32:33,208 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 12:32:33,208 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-20 12:32:33,209 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-20 12:32:33,209 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 12:32:33,209 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:32:33,209 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:32:33,209 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:32:33,210 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:32:33,210 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:32:33,210 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:32:33,210 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:32:33,211 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:32:33,211 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:32:33,211 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:32:33,211 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-20 12:32:33,212 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-20 12:32:33,212 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:32:33,212 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:32:33,212 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:32:33,213 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-20 12:32:33,213 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_512485d2-23bf-4e3c-995c-378edd8c23be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2e745a133311e60f1a9e202bf4fcb9b524a944d790f4c1df2987f4b8dfd5e08b [2022-11-20 12:32:33,731 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:32:33,769 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:32:33,775 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:32:33,778 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:32:33,778 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:32:33,780 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/combinations/square_8+soft_float_4-2a.c.cil.c [2022-11-20 12:32:37,602 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:32:37,909 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:32:37,910 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/sv-benchmarks/c/combinations/square_8+soft_float_4-2a.c.cil.c [2022-11-20 12:32:37,919 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/data/37c47b9c1/2343b974029c4c0886d704659a0c1c25/FLAG82769f778 [2022-11-20 12:32:37,943 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/data/37c47b9c1/2343b974029c4c0886d704659a0c1c25 [2022-11-20 12:32:37,949 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:32:37,951 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:32:37,953 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:32:37,953 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:32:37,958 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:32:37,959 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:32:37" (1/1) ... [2022-11-20 12:32:37,960 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@84bdf5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:32:37, skipping insertion in model container [2022-11-20 12:32:37,961 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:32:37" (1/1) ... [2022-11-20 12:32:37,971 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:32:38,014 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:32:38,208 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_512485d2-23bf-4e3c-995c-378edd8c23be/sv-benchmarks/c/combinations/square_8+soft_float_4-2a.c.cil.c[1995,2008] [2022-11-20 12:32:38,217 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_512485d2-23bf-4e3c-995c-378edd8c23be/sv-benchmarks/c/combinations/square_8+soft_float_4-2a.c.cil.c[2389,2402] [2022-11-20 12:32:38,269 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:32:38,301 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:32:38,349 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_512485d2-23bf-4e3c-995c-378edd8c23be/sv-benchmarks/c/combinations/square_8+soft_float_4-2a.c.cil.c[1995,2008] [2022-11-20 12:32:38,354 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_512485d2-23bf-4e3c-995c-378edd8c23be/sv-benchmarks/c/combinations/square_8+soft_float_4-2a.c.cil.c[2389,2402] [2022-11-20 12:32:38,410 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:32:38,444 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:32:38,445 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:32:38 WrapperNode [2022-11-20 12:32:38,445 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:32:38,448 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:32:38,448 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:32:38,448 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:32:38,458 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:32:38" (1/1) ... [2022-11-20 12:32:38,491 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:32:38" (1/1) ... [2022-11-20 12:32:38,533 INFO L138 Inliner]: procedures = 28, calls = 19, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 70 [2022-11-20 12:32:38,533 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:32:38,534 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:32:38,536 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:32:38,536 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:32:38,548 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:32:38" (1/1) ... [2022-11-20 12:32:38,549 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:32:38" (1/1) ... [2022-11-20 12:32:38,563 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:32:38" (1/1) ... [2022-11-20 12:32:38,567 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:32:38" (1/1) ... [2022-11-20 12:32:38,577 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:32:38" (1/1) ... [2022-11-20 12:32:38,596 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:32:38" (1/1) ... [2022-11-20 12:32:38,603 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:32:38" (1/1) ... [2022-11-20 12:32:38,618 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:32:38" (1/1) ... [2022-11-20 12:32:38,621 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:32:38,623 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:32:38,623 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:32:38,623 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:32:38,624 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:32:38" (1/1) ... [2022-11-20 12:32:38,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:32:38,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:32:38,677 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 12:32:38,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 12:32:38,741 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 12:32:38,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-20 12:32:38,744 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2022-11-20 12:32:38,744 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2022-11-20 12:32:38,744 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2022-11-20 12:32:38,744 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2022-11-20 12:32:38,745 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:32:38,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:32:38,745 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-20 12:32:38,745 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-20 12:32:38,922 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:32:38,924 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:32:41,506 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:32:41,514 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:32:41,514 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-20 12:32:41,517 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:32:41 BoogieIcfgContainer [2022-11-20 12:32:41,517 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:32:41,521 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 12:32:41,522 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 12:32:41,526 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 12:32:41,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:32:37" (1/3) ... [2022-11-20 12:32:41,528 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c32b7a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:32:41, skipping insertion in model container [2022-11-20 12:32:41,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:32:38" (2/3) ... [2022-11-20 12:32:41,531 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c32b7a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:32:41, skipping insertion in model container [2022-11-20 12:32:41,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:32:41" (3/3) ... [2022-11-20 12:32:41,533 INFO L112 eAbstractionObserver]: Analyzing ICFG square_8+soft_float_4-2a.c.cil.c [2022-11-20 12:32:41,558 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 12:32:41,558 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-20 12:32:41,634 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:32:41,643 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;@3c750b12, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:32:41,643 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-20 12:32:41,648 INFO L276 IsEmpty]: Start isEmpty. Operand has 63 states, 49 states have (on average 1.489795918367347) internal successors, (73), 51 states have internal predecessors, (73), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-20 12:32:41,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-20 12:32:41,657 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:32:41,658 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:32:41,659 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:32:41,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:32:41,666 INFO L85 PathProgramCache]: Analyzing trace with hash -548115930, now seen corresponding path program 1 times [2022-11-20 12:32:41,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:32:41,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1257224572] [2022-11-20 12:32:41,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:32:41,684 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:32:41,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:32:41,690 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:32:41,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-20 12:32:42,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:32:42,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-20 12:32:42,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:32:42,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:32:42,414 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:32:42,415 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:32:42,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1257224572] [2022-11-20 12:32:42,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1257224572] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:32:42,418 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:32:42,419 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:32:42,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302386470] [2022-11-20 12:32:42,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:32:42,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 12:32:42,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:32:42,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 12:32:42,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 12:32:42,484 INFO L87 Difference]: Start difference. First operand has 63 states, 49 states have (on average 1.489795918367347) internal successors, (73), 51 states have internal predecessors, (73), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:42,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:32:42,525 INFO L93 Difference]: Finished difference Result 121 states and 178 transitions. [2022-11-20 12:32:42,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 12:32:42,529 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-20 12:32:42,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:32:42,546 INFO L225 Difference]: With dead ends: 121 [2022-11-20 12:32:42,547 INFO L226 Difference]: Without dead ends: 56 [2022-11-20 12:32:42,551 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 6 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 12:32:42,555 INFO L413 NwaCegarLoop]: 81 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, 81 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 12:32:42,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:32:42,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-11-20 12:32:42,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2022-11-20 12:32:42,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 43 states have (on average 1.3488372093023255) internal successors, (58), 45 states have internal predecessors, (58), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-20 12:32:42,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 73 transitions. [2022-11-20 12:32:42,631 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 73 transitions. Word has length 7 [2022-11-20 12:32:42,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:32:42,632 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 73 transitions. [2022-11-20 12:32:42,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:42,632 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 73 transitions. [2022-11-20 12:32:42,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-20 12:32:42,633 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:32:42,633 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:32:42,653 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-11-20 12:32:42,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:32:42,839 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:32:42,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:32:42,840 INFO L85 PathProgramCache]: Analyzing trace with hash -548056348, now seen corresponding path program 1 times [2022-11-20 12:32:42,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:32:42,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [524126559] [2022-11-20 12:32:42,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:32:42,842 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:32:42,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:32:42,849 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:32:42,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-20 12:33:58,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:33:58,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 12:33:58,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:34:13,674 WARN L837 $PredicateComparison]: unable to prove that (and (exists ((|ULTIMATE.start_main1_~IN~0#1| (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (and (fp.lt |ULTIMATE.start_main1_~IN~0#1| .cse0) (= (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse0 (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) |c_ULTIMATE.start_main1_~result~0#1|) (fp.geq |ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2022-11-20 12:34:47,333 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0))) (.cse2 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 8.0))) (.cse3 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 16.0))) (.cse4 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 128.0))) (.cse0 ((_ to_fp 8 24) roundNearestTiesToEven 1.0))) (or (exists ((|ULTIMATE.start_main1_~IN~0#1| (_ FloatingPoint 8 24))) (and (not (fp.lt (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven .cse1 |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse2 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse3 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse4 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) ((_ to_fp 8 24) roundNearestTiesToEven (/ 3.0 2.0)))) (fp.geq |ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24)) (fp.lt |ULTIMATE.start_main1_~IN~0#1| .cse0))) (exists ((|ULTIMATE.start_main1_~IN~0#1| (_ FloatingPoint 8 24))) (and (fp.geq |ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24)) (not (fp.geq (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven .cse1 |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse2 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse3 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse4 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (_ +zero 8 24))) (fp.lt |ULTIMATE.start_main1_~IN~0#1| .cse0))))) is different from false [2022-11-20 12:34:49,391 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0))) (.cse2 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 8.0))) (.cse3 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 16.0))) (.cse4 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 128.0))) (.cse0 ((_ to_fp 8 24) roundNearestTiesToEven 1.0))) (or (exists ((|ULTIMATE.start_main1_~IN~0#1| (_ FloatingPoint 8 24))) (and (not (fp.lt (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven .cse1 |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse2 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse3 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse4 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) ((_ to_fp 8 24) roundNearestTiesToEven (/ 3.0 2.0)))) (fp.geq |ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24)) (fp.lt |ULTIMATE.start_main1_~IN~0#1| .cse0))) (exists ((|ULTIMATE.start_main1_~IN~0#1| (_ FloatingPoint 8 24))) (and (fp.geq |ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24)) (not (fp.geq (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven .cse1 |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse2 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse3 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse4 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (_ +zero 8 24))) (fp.lt |ULTIMATE.start_main1_~IN~0#1| .cse0))))) is different from true [2022-11-20 12:34:49,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:34:49,392 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:34:49,392 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:34:49,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [524126559] [2022-11-20 12:34:49,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [524126559] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:34:49,393 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:34:49,393 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:34:49,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536517831] [2022-11-20 12:34:49,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:34:49,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 12:34:49,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:34:49,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 12:34:49,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=12, Unknown=3, NotChecked=14, Total=42 [2022-11-20 12:34:49,397 INFO L87 Difference]: Start difference. First operand 56 states and 73 transitions. Second operand has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:51,998 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:34:52,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:34:52,332 INFO L93 Difference]: Finished difference Result 56 states and 73 transitions. [2022-11-20 12:34:52,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:34:52,333 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-20 12:34:52,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:34:52,334 INFO L225 Difference]: With dead ends: 56 [2022-11-20 12:34:52,334 INFO L226 Difference]: Without dead ends: 51 [2022-11-20 12:34:52,335 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=18, Invalid=17, Unknown=3, NotChecked=18, Total=56 [2022-11-20 12:34:52,336 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 68 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 141 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-20 12:34:52,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 172 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 1 Unknown, 141 Unchecked, 2.6s Time] [2022-11-20 12:34:52,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-11-20 12:34:52,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2022-11-20 12:34:52,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 39 states have (on average 1.358974358974359) internal successors, (53), 40 states have internal predecessors, (53), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-20 12:34:52,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 68 transitions. [2022-11-20 12:34:52,349 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 68 transitions. Word has length 7 [2022-11-20 12:34:52,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:34:52,349 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 68 transitions. [2022-11-20 12:34:52,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:52,350 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 68 transitions. [2022-11-20 12:34:52,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-20 12:34:52,351 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:34:52,351 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:34:52,387 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-20 12:34:52,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:34:52,567 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:34:52,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:34:52,568 INFO L85 PathProgramCache]: Analyzing trace with hash 1078958274, now seen corresponding path program 1 times [2022-11-20 12:34:52,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:34:52,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1202360972] [2022-11-20 12:34:52,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:34:52,570 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:34:52,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:34:52,572 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:34:52,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-20 12:34:52,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:34:52,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 12:34:52,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:34:53,119 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-20 12:34:53,119 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:34:53,120 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:34:53,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1202360972] [2022-11-20 12:34:53,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1202360972] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:34:53,120 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:34:53,120 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 12:34:53,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399647345] [2022-11-20 12:34:53,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:34:53,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:34:53,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:34:53,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:34:53,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:34:53,122 INFO L87 Difference]: Start difference. First operand 51 states and 68 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-20 12:34:53,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:34:53,729 INFO L93 Difference]: Finished difference Result 100 states and 135 transitions. [2022-11-20 12:34:53,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 12:34:53,730 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 32 [2022-11-20 12:34:53,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:34:53,733 INFO L225 Difference]: With dead ends: 100 [2022-11-20 12:34:53,733 INFO L226 Difference]: Without dead ends: 72 [2022-11-20 12:34:53,734 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-20 12:34:53,735 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 20 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:34:53,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 425 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 12:34:53,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2022-11-20 12:34:53,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 62. [2022-11-20 12:34:53,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 47 states have (on average 1.297872340425532) internal successors, (61), 49 states have internal predecessors, (61), 9 states have call successors, (9), 4 states have call predecessors, (9), 5 states have return successors, (11), 8 states have call predecessors, (11), 8 states have call successors, (11) [2022-11-20 12:34:53,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 81 transitions. [2022-11-20 12:34:53,748 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 81 transitions. Word has length 32 [2022-11-20 12:34:53,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:34:53,749 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 81 transitions. [2022-11-20 12:34:53,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-20 12:34:53,749 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 81 transitions. [2022-11-20 12:34:53,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 12:34:53,751 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:34:53,751 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2022-11-20 12:34:53,760 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-20 12:34:53,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:34:53,955 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:34:53,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:34:53,956 INFO L85 PathProgramCache]: Analyzing trace with hash 452521591, now seen corresponding path program 1 times [2022-11-20 12:34:53,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:34:53,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1351156504] [2022-11-20 12:34:53,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:34:53,957 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:34:53,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:34:53,959 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:34:53,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-20 12:34:54,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:34:54,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 12:34:54,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:34:54,627 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-20 12:34:54,627 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:34:54,937 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-20 12:34:54,937 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:34:54,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1351156504] [2022-11-20 12:34:54,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1351156504] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:34:54,938 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:34:54,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2022-11-20 12:34:54,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793604311] [2022-11-20 12:34:54,938 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:34:54,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 12:34:54,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:34:54,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 12:34:54,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:34:54,939 INFO L87 Difference]: Start difference. First operand 62 states and 81 transitions. Second operand has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 7 states have internal predecessors, (24), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-20 12:34:55,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:34:55,833 INFO L93 Difference]: Finished difference Result 122 states and 160 transitions. [2022-11-20 12:34:55,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 12:34:55,838 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 7 states have internal predecessors, (24), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 36 [2022-11-20 12:34:55,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:34:55,840 INFO L225 Difference]: With dead ends: 122 [2022-11-20 12:34:55,840 INFO L226 Difference]: Without dead ends: 94 [2022-11-20 12:34:55,841 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-11-20 12:34:55,842 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 27 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:34:55,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 492 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 12:34:55,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-11-20 12:34:55,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 72. [2022-11-20 12:34:55,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 54 states have (on average 1.2777777777777777) internal successors, (69), 56 states have internal predecessors, (69), 11 states have call successors, (11), 5 states have call predecessors, (11), 6 states have return successors, (14), 10 states have call predecessors, (14), 10 states have call successors, (14) [2022-11-20 12:34:55,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 94 transitions. [2022-11-20 12:34:55,859 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 94 transitions. Word has length 36 [2022-11-20 12:34:55,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:34:55,859 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 94 transitions. [2022-11-20 12:34:55,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 7 states have internal predecessors, (24), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-20 12:34:55,860 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 94 transitions. [2022-11-20 12:34:55,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-20 12:34:55,862 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:34:55,862 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2022-11-20 12:34:55,884 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-20 12:34:56,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:34:56,076 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:34:56,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:34:56,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1328087799, now seen corresponding path program 1 times [2022-11-20 12:34:56,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:34:56,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1141847821] [2022-11-20 12:34:56,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:34:56,077 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:34:56,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:34:56,078 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:34:56,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-20 12:34:56,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:34:56,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 12:34:56,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:34:56,661 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-20 12:34:56,662 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:34:57,036 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-20 12:34:57,037 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:34:57,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1141847821] [2022-11-20 12:34:57,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1141847821] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:34:57,038 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:34:57,038 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2022-11-20 12:34:57,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259376350] [2022-11-20 12:34:57,038 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:34:57,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:34:57,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:34:57,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:34:57,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:34:57,040 INFO L87 Difference]: Start difference. First operand 72 states and 94 transitions. Second operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 6 states have internal predecessors, (25), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 12:34:57,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:34:57,641 INFO L93 Difference]: Finished difference Result 114 states and 149 transitions. [2022-11-20 12:34:57,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 12:34:57,648 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 6 states have internal predecessors, (25), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 40 [2022-11-20 12:34:57,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:34:57,650 INFO L225 Difference]: With dead ends: 114 [2022-11-20 12:34:57,650 INFO L226 Difference]: Without dead ends: 90 [2022-11-20 12:34:57,650 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-20 12:34:57,651 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 16 mSDsluCounter, 391 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:34:57,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 462 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 12:34:57,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2022-11-20 12:34:57,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 82. [2022-11-20 12:34:57,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 61 states have (on average 1.2459016393442623) internal successors, (76), 63 states have internal predecessors, (76), 13 states have call successors, (13), 6 states have call predecessors, (13), 7 states have return successors, (16), 12 states have call predecessors, (16), 12 states have call successors, (16) [2022-11-20 12:34:57,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 105 transitions. [2022-11-20 12:34:57,667 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 105 transitions. Word has length 40 [2022-11-20 12:34:57,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:34:57,668 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 105 transitions. [2022-11-20 12:34:57,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 6 states have internal predecessors, (25), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 12:34:57,668 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 105 transitions. [2022-11-20 12:34:57,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-20 12:34:57,670 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:34:57,670 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:34:57,687 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-20 12:34:57,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:34:57,883 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:34:57,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:34:57,883 INFO L85 PathProgramCache]: Analyzing trace with hash 78255138, now seen corresponding path program 2 times [2022-11-20 12:34:57,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:34:57,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1175458157] [2022-11-20 12:34:57,884 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:34:57,884 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:34:57,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:34:57,885 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:34:57,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-20 12:34:57,946 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 12:34:57,946 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:34:57,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 12:34:57,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:34:58,364 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-20 12:34:58,364 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:34:58,365 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:34:58,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1175458157] [2022-11-20 12:34:58,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1175458157] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:34:58,365 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:34:58,365 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 12:34:58,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859872902] [2022-11-20 12:34:58,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:34:58,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:34:58,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:34:58,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:34:58,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:34:58,368 INFO L87 Difference]: Start difference. First operand 82 states and 105 transitions. Second operand has 6 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-20 12:34:58,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:34:58,720 INFO L93 Difference]: Finished difference Result 97 states and 122 transitions. [2022-11-20 12:34:58,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:34:58,721 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 40 [2022-11-20 12:34:58,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:34:58,725 INFO L225 Difference]: With dead ends: 97 [2022-11-20 12:34:58,725 INFO L226 Difference]: Without dead ends: 95 [2022-11-20 12:34:58,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:34:58,727 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 9 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 13 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:34:58,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 336 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 13 Unchecked, 0.2s Time] [2022-11-20 12:34:58,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2022-11-20 12:34:58,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 88. [2022-11-20 12:34:58,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 65 states have (on average 1.2461538461538462) internal successors, (81), 68 states have internal predecessors, (81), 14 states have call successors, (14), 7 states have call predecessors, (14), 8 states have return successors, (17), 12 states have call predecessors, (17), 13 states have call successors, (17) [2022-11-20 12:34:58,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 112 transitions. [2022-11-20 12:34:58,753 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 112 transitions. Word has length 40 [2022-11-20 12:34:58,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:34:58,753 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 112 transitions. [2022-11-20 12:34:58,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-20 12:34:58,754 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 112 transitions. [2022-11-20 12:34:58,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-20 12:34:58,756 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:34:58,756 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:34:58,775 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -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)] Ended with exit code 0 [2022-11-20 12:34:58,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:34:58,975 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:34:58,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:34:58,976 INFO L85 PathProgramCache]: Analyzing trace with hash 135513440, now seen corresponding path program 1 times [2022-11-20 12:34:58,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:34:58,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1262713752] [2022-11-20 12:34:58,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:34:58,976 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:34:58,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:34:58,977 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:34:58,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-20 12:34:59,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:34:59,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 12:34:59,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:34:59,514 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-20 12:34:59,515 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:34:59,515 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:34:59,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1262713752] [2022-11-20 12:34:59,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1262713752] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:34:59,515 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:34:59,516 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 12:34:59,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586381956] [2022-11-20 12:34:59,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:34:59,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:34:59,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:34:59,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:34:59,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:34:59,517 INFO L87 Difference]: Start difference. First operand 88 states and 112 transitions. Second operand has 6 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-20 12:34:59,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:34:59,843 INFO L93 Difference]: Finished difference Result 97 states and 121 transitions. [2022-11-20 12:34:59,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:34:59,846 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 40 [2022-11-20 12:34:59,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:34:59,847 INFO L225 Difference]: With dead ends: 97 [2022-11-20 12:34:59,847 INFO L226 Difference]: Without dead ends: 95 [2022-11-20 12:34:59,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:34:59,848 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 9 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 12 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:34:59,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 309 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 12 Unchecked, 0.1s Time] [2022-11-20 12:34:59,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2022-11-20 12:34:59,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 86. [2022-11-20 12:34:59,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 64 states have (on average 1.234375) internal successors, (79), 66 states have internal predecessors, (79), 13 states have call successors, (13), 7 states have call predecessors, (13), 8 states have return successors, (16), 12 states have call predecessors, (16), 12 states have call successors, (16) [2022-11-20 12:34:59,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 108 transitions. [2022-11-20 12:34:59,869 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 108 transitions. Word has length 40 [2022-11-20 12:34:59,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:34:59,870 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 108 transitions. [2022-11-20 12:34:59,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-20 12:34:59,870 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 108 transitions. [2022-11-20 12:34:59,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-20 12:34:59,872 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:34:59,872 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:34:59,903 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-20 12:35:00,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:35:00,094 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:35:00,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:35:00,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1165006364, now seen corresponding path program 1 times [2022-11-20 12:35:00,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:35:00,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [492901465] [2022-11-20 12:35:00,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:35:00,095 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:35:00,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:35:00,096 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:35:00,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-20 12:35:00,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:00,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 12:35:00,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:35:01,044 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-20 12:35:01,044 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:35:01,045 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:35:01,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [492901465] [2022-11-20 12:35:01,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [492901465] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:35:01,045 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:35:01,045 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-20 12:35:01,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486692411] [2022-11-20 12:35:01,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:35:01,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 12:35:01,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:35:01,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 12:35:01,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-11-20 12:35:01,048 INFO L87 Difference]: Start difference. First operand 86 states and 108 transitions. Second operand has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 9 states have internal predecessors, (29), 3 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 12:35:02,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:35:02,822 INFO L93 Difference]: Finished difference Result 127 states and 164 transitions. [2022-11-20 12:35:02,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 12:35:02,823 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 9 states have internal predecessors, (29), 3 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) Word has length 45 [2022-11-20 12:35:02,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:35:02,825 INFO L225 Difference]: With dead ends: 127 [2022-11-20 12:35:02,825 INFO L226 Difference]: Without dead ends: 120 [2022-11-20 12:35:02,826 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-11-20 12:35:02,827 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 35 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:35:02,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 572 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-20 12:35:02,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2022-11-20 12:35:02,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 101. [2022-11-20 12:35:02,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 75 states have (on average 1.2266666666666666) internal successors, (92), 77 states have internal predecessors, (92), 16 states have call successors, (16), 7 states have call predecessors, (16), 9 states have return successors, (22), 16 states have call predecessors, (22), 15 states have call successors, (22) [2022-11-20 12:35:02,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 130 transitions. [2022-11-20 12:35:02,850 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 130 transitions. Word has length 45 [2022-11-20 12:35:02,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:35:02,851 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 130 transitions. [2022-11-20 12:35:02,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 9 states have internal predecessors, (29), 3 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 12:35:02,851 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 130 transitions. [2022-11-20 12:35:02,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-20 12:35:02,853 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:35:02,854 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:35:02,875 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-20 12:35:03,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:35:03,068 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:35:03,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:35:03,075 INFO L85 PathProgramCache]: Analyzing trace with hash -1862719454, now seen corresponding path program 1 times [2022-11-20 12:35:03,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:35:03,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1887101676] [2022-11-20 12:35:03,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:35:03,076 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:35:03,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:35:03,079 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:35:03,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-20 12:35:03,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:03,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 12:35:03,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:35:03,970 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-20 12:35:03,970 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:35:05,344 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-20 12:35:05,344 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:35:05,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1887101676] [2022-11-20 12:35:05,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1887101676] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:35:05,345 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:35:05,345 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 14 [2022-11-20 12:35:05,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019857311] [2022-11-20 12:35:05,345 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:35:05,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 12:35:05,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:35:05,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 12:35:05,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-11-20 12:35:05,347 INFO L87 Difference]: Start difference. First operand 101 states and 130 transitions. Second operand has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 12 states have internal predecessors, (36), 4 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-20 12:35:07,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:35:07,255 INFO L93 Difference]: Finished difference Result 134 states and 172 transitions. [2022-11-20 12:35:07,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 12:35:07,257 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 12 states have internal predecessors, (36), 4 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) Word has length 47 [2022-11-20 12:35:07,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:35:07,258 INFO L225 Difference]: With dead ends: 134 [2022-11-20 12:35:07,258 INFO L226 Difference]: Without dead ends: 126 [2022-11-20 12:35:07,259 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2022-11-20 12:35:07,259 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 54 mSDsluCounter, 591 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 662 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:35:07,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 662 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-20 12:35:07,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2022-11-20 12:35:07,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 112. [2022-11-20 12:35:07,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 84 states have (on average 1.2142857142857142) internal successors, (102), 85 states have internal predecessors, (102), 17 states have call successors, (17), 7 states have call predecessors, (17), 10 states have return successors, (24), 19 states have call predecessors, (24), 16 states have call successors, (24) [2022-11-20 12:35:07,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 143 transitions. [2022-11-20 12:35:07,289 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 143 transitions. Word has length 47 [2022-11-20 12:35:07,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:35:07,290 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 143 transitions. [2022-11-20 12:35:07,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 12 states have internal predecessors, (36), 4 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-20 12:35:07,293 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 143 transitions. [2022-11-20 12:35:07,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-20 12:35:07,297 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:35:07,299 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:35:07,310 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-20 12:35:07,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:35:07,499 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:35:07,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:35:07,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1805461152, now seen corresponding path program 1 times [2022-11-20 12:35:07,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:35:07,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1448083738] [2022-11-20 12:35:07,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:35:07,500 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:35:07,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:35:07,501 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:35:07,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-20 12:35:07,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:07,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 12:35:07,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:35:07,830 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-20 12:35:07,830 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:35:07,830 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:35:07,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1448083738] [2022-11-20 12:35:07,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1448083738] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:35:07,831 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:35:07,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 12:35:07,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523601381] [2022-11-20 12:35:07,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:35:07,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:35:07,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:35:07,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:35:07,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:35:07,833 INFO L87 Difference]: Start difference. First operand 112 states and 143 transitions. Second operand has 6 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-20 12:35:08,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:35:08,117 INFO L93 Difference]: Finished difference Result 120 states and 150 transitions. [2022-11-20 12:35:08,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:35:08,118 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 47 [2022-11-20 12:35:08,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:35:08,119 INFO L225 Difference]: With dead ends: 120 [2022-11-20 12:35:08,119 INFO L226 Difference]: Without dead ends: 105 [2022-11-20 12:35:08,120 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:35:08,120 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 6 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:35:08,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 314 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:35:08,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2022-11-20 12:35:08,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2022-11-20 12:35:08,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 79 states have (on average 1.2025316455696202) internal successors, (95), 81 states have internal predecessors, (95), 15 states have call successors, (15), 7 states have call predecessors, (15), 10 states have return successors, (21), 16 states have call predecessors, (21), 14 states have call successors, (21) [2022-11-20 12:35:08,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 131 transitions. [2022-11-20 12:35:08,136 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 131 transitions. Word has length 47 [2022-11-20 12:35:08,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:35:08,137 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 131 transitions. [2022-11-20 12:35:08,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-20 12:35:08,137 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 131 transitions. [2022-11-20 12:35:08,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-20 12:35:08,139 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:35:08,139 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:35:08,156 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-20 12:35:08,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:35:08,354 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:35:08,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:35:08,354 INFO L85 PathProgramCache]: Analyzing trace with hash 2144611077, now seen corresponding path program 1 times [2022-11-20 12:35:08,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:35:08,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1855554796] [2022-11-20 12:35:08,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:35:08,355 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:35:08,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:35:08,356 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:35:08,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-20 12:35:08,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:08,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-20 12:35:08,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:35:09,546 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-20 12:35:09,546 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:35:12,394 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-20 12:35:12,394 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:35:12,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1855554796] [2022-11-20 12:35:12,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1855554796] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:35:12,395 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:35:12,395 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2022-11-20 12:35:12,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030032118] [2022-11-20 12:35:12,396 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:35:12,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-20 12:35:12,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:35:12,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-20 12:35:12,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=496, Unknown=0, NotChecked=0, Total=552 [2022-11-20 12:35:12,398 INFO L87 Difference]: Start difference. First operand 105 states and 131 transitions. Second operand has 24 states, 22 states have (on average 2.0) internal successors, (44), 20 states have internal predecessors, (44), 4 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-20 12:35:18,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:35:18,985 INFO L93 Difference]: Finished difference Result 152 states and 204 transitions. [2022-11-20 12:35:18,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-20 12:35:18,986 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 22 states have (on average 2.0) internal successors, (44), 20 states have internal predecessors, (44), 4 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) Word has length 49 [2022-11-20 12:35:18,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:35:18,988 INFO L225 Difference]: With dead ends: 152 [2022-11-20 12:35:18,988 INFO L226 Difference]: Without dead ends: 115 [2022-11-20 12:35:18,989 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=199, Invalid=1361, Unknown=0, NotChecked=0, Total=1560 [2022-11-20 12:35:18,990 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 149 mSDsluCounter, 957 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 1029 SdHoareTripleChecker+Invalid, 489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:35:18,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 1029 Invalid, 489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 462 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-11-20 12:35:18,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2022-11-20 12:35:19,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 87. [2022-11-20 12:35:19,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 65 states have (on average 1.2307692307692308) internal successors, (80), 69 states have internal predecessors, (80), 12 states have call successors, (12), 5 states have call predecessors, (12), 9 states have return successors, (24), 12 states have call predecessors, (24), 11 states have call successors, (24) [2022-11-20 12:35:19,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 116 transitions. [2022-11-20 12:35:19,013 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 116 transitions. Word has length 49 [2022-11-20 12:35:19,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:35:19,013 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 116 transitions. [2022-11-20 12:35:19,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 22 states have (on average 2.0) internal successors, (44), 20 states have internal predecessors, (44), 4 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-20 12:35:19,014 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 116 transitions. [2022-11-20 12:35:19,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-20 12:35:19,015 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:35:19,015 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:35:19,036 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-20 12:35:19,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:35:19,229 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:35:19,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:35:19,229 INFO L85 PathProgramCache]: Analyzing trace with hash 1400781647, now seen corresponding path program 2 times [2022-11-20 12:35:19,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:35:19,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1138035418] [2022-11-20 12:35:19,230 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:35:19,230 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:35:19,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:35:19,231 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:35:19,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-20 12:35:19,315 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:35:19,315 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:35:19,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-20 12:35:19,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:35:20,496 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-20 12:35:20,497 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:35:23,254 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-20 12:35:23,254 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:35:23,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1138035418] [2022-11-20 12:35:23,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1138035418] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:35:23,255 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:35:23,255 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2022-11-20 12:35:23,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665978906] [2022-11-20 12:35:23,255 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:35:23,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-20 12:35:23,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:35:23,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-20 12:35:23,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=496, Unknown=0, NotChecked=0, Total=552 [2022-11-20 12:35:23,257 INFO L87 Difference]: Start difference. First operand 87 states and 116 transitions. Second operand has 24 states, 22 states have (on average 2.0) internal successors, (44), 20 states have internal predecessors, (44), 4 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-20 12:35:28,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:35:28,868 INFO L93 Difference]: Finished difference Result 127 states and 174 transitions. [2022-11-20 12:35:28,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-20 12:35:28,869 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 22 states have (on average 2.0) internal successors, (44), 20 states have internal predecessors, (44), 4 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) Word has length 49 [2022-11-20 12:35:28,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:35:28,870 INFO L225 Difference]: With dead ends: 127 [2022-11-20 12:35:28,871 INFO L226 Difference]: Without dead ends: 116 [2022-11-20 12:35:28,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=184, Invalid=1298, Unknown=0, NotChecked=0, Total=1482 [2022-11-20 12:35:28,872 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 152 mSDsluCounter, 863 mSDsCounter, 0 mSdLazyCounter, 439 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 931 SdHoareTripleChecker+Invalid, 469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-20 12:35:28,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 931 Invalid, 469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 439 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-20 12:35:28,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2022-11-20 12:35:28,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 89. [2022-11-20 12:35:28,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 66 states have (on average 1.2272727272727273) internal successors, (81), 70 states have internal predecessors, (81), 13 states have call successors, (13), 5 states have call predecessors, (13), 9 states have return successors, (27), 13 states have call predecessors, (27), 12 states have call successors, (27) [2022-11-20 12:35:28,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 121 transitions. [2022-11-20 12:35:28,889 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 121 transitions. Word has length 49 [2022-11-20 12:35:28,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:35:28,890 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 121 transitions. [2022-11-20 12:35:28,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 22 states have (on average 2.0) internal successors, (44), 20 states have internal predecessors, (44), 4 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-20 12:35:28,890 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 121 transitions. [2022-11-20 12:35:28,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-20 12:35:28,892 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:35:28,892 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:35:28,915 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-20 12:35:29,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:35:29,116 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:35:29,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:35:29,117 INFO L85 PathProgramCache]: Analyzing trace with hash -1227181886, now seen corresponding path program 1 times [2022-11-20 12:35:29,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:35:29,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [126456635] [2022-11-20 12:35:29,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:35:29,117 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:35:29,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:35:29,118 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:35:29,121 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-20 12:35:29,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:29,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 12:35:29,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:35:34,592 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-20 12:35:34,592 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:35:34,593 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:35:34,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [126456635] [2022-11-20 12:35:34,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [126456635] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:35:34,593 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:35:34,593 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 12:35:34,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987595533] [2022-11-20 12:35:34,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:35:34,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:35:34,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:35:34,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:35:34,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=37, Unknown=2, NotChecked=0, Total=56 [2022-11-20 12:35:34,595 INFO L87 Difference]: Start difference. First operand 89 states and 121 transitions. Second operand has 8 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 12:35:34,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:35:34,763 INFO L93 Difference]: Finished difference Result 96 states and 128 transitions. [2022-11-20 12:35:34,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 12:35:34,764 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 50 [2022-11-20 12:35:34,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:35:34,765 INFO L225 Difference]: With dead ends: 96 [2022-11-20 12:35:34,766 INFO L226 Difference]: Without dead ends: 94 [2022-11-20 12:35:34,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=21, Invalid=49, Unknown=2, NotChecked=0, Total=72 [2022-11-20 12:35:34,767 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 11 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 24 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:35:34,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 289 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 24 Unchecked, 0.1s Time] [2022-11-20 12:35:34,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-11-20 12:35:34,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2022-11-20 12:35:34,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 69 states have (on average 1.2173913043478262) internal successors, (84), 74 states have internal predecessors, (84), 14 states have call successors, (14), 6 states have call predecessors, (14), 10 states have return successors, (28), 13 states have call predecessors, (28), 13 states have call successors, (28) [2022-11-20 12:35:34,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 126 transitions. [2022-11-20 12:35:34,782 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 126 transitions. Word has length 50 [2022-11-20 12:35:34,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:35:34,783 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 126 transitions. [2022-11-20 12:35:34,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 12:35:34,783 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 126 transitions. [2022-11-20 12:35:34,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-20 12:35:34,784 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:35:34,784 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:35:34,799 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-20 12:35:34,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:35:34,998 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:35:34,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:35:34,998 INFO L85 PathProgramCache]: Analyzing trace with hash 792222103, now seen corresponding path program 1 times [2022-11-20 12:35:34,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:35:34,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1111501796] [2022-11-20 12:35:34,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:35:34,999 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:35:34,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:35:35,001 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:35:35,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-20 12:35:35,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:35,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 12:35:35,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:35:35,868 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-20 12:35:35,868 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:35:37,519 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-20 12:35:37,519 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:35:37,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1111501796] [2022-11-20 12:35:37,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1111501796] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:35:37,520 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:35:37,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2022-11-20 12:35:37,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320244457] [2022-11-20 12:35:37,520 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:35:37,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 12:35:37,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:35:37,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 12:35:37,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-11-20 12:35:37,522 INFO L87 Difference]: Start difference. First operand 94 states and 126 transitions. Second operand has 16 states, 14 states have (on average 3.0) internal successors, (42), 14 states have internal predecessors, (42), 4 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-20 12:35:39,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:35:39,834 INFO L93 Difference]: Finished difference Result 130 states and 180 transitions. [2022-11-20 12:35:39,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 12:35:39,835 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 3.0) internal successors, (42), 14 states have internal predecessors, (42), 4 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) Word has length 51 [2022-11-20 12:35:39,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:35:39,836 INFO L225 Difference]: With dead ends: 130 [2022-11-20 12:35:39,836 INFO L226 Difference]: Without dead ends: 119 [2022-11-20 12:35:39,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=100, Invalid=406, Unknown=0, NotChecked=0, Total=506 [2022-11-20 12:35:39,838 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 78 mSDsluCounter, 678 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 739 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:35:39,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 739 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-20 12:35:39,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2022-11-20 12:35:39,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 97. [2022-11-20 12:35:39,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 71 states have (on average 1.2112676056338028) internal successors, (86), 77 states have internal predecessors, (86), 14 states have call successors, (14), 6 states have call predecessors, (14), 11 states have return successors, (31), 13 states have call predecessors, (31), 13 states have call successors, (31) [2022-11-20 12:35:39,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 131 transitions. [2022-11-20 12:35:39,855 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 131 transitions. Word has length 51 [2022-11-20 12:35:39,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:35:39,855 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 131 transitions. [2022-11-20 12:35:39,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 3.0) internal successors, (42), 14 states have internal predecessors, (42), 4 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-20 12:35:39,856 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 131 transitions. [2022-11-20 12:35:39,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-20 12:35:39,857 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:35:39,857 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-20 12:35:39,878 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2022-11-20 12:35:40,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:35:40,067 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:35:40,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:35:40,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1615591569, now seen corresponding path program 1 times [2022-11-20 12:35:40,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:35:40,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [66900763] [2022-11-20 12:35:40,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:35:40,068 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:35:40,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:35:40,070 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:35:40,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-20 12:35:40,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:40,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 12:35:40,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:35:40,738 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-20 12:35:40,739 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:35:40,739 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:35:40,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [66900763] [2022-11-20 12:35:40,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [66900763] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:35:40,739 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:35:40,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 12:35:40,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861402046] [2022-11-20 12:35:40,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:35:40,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 12:35:40,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:35:40,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 12:35:40,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:35:40,741 INFO L87 Difference]: Start difference. First operand 97 states and 131 transitions. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 7 states have internal predecessors, (38), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-11-20 12:35:41,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:35:41,527 INFO L93 Difference]: Finished difference Result 160 states and 203 transitions. [2022-11-20 12:35:41,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 12:35:41,527 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 7 states have internal predecessors, (38), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 55 [2022-11-20 12:35:41,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:35:41,529 INFO L225 Difference]: With dead ends: 160 [2022-11-20 12:35:41,529 INFO L226 Difference]: Without dead ends: 92 [2022-11-20 12:35:41,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-11-20 12:35:41,532 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 14 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 509 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:35:41,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 509 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 12:35:41,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2022-11-20 12:35:41,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 89. [2022-11-20 12:35:41,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 65 states have (on average 1.2307692307692308) internal successors, (80), 71 states have internal predecessors, (80), 13 states have call successors, (13), 5 states have call predecessors, (13), 10 states have return successors, (29), 12 states have call predecessors, (29), 12 states have call successors, (29) [2022-11-20 12:35:41,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 122 transitions. [2022-11-20 12:35:41,562 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 122 transitions. Word has length 55 [2022-11-20 12:35:41,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:35:41,563 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 122 transitions. [2022-11-20 12:35:41,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 7 states have internal predecessors, (38), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-11-20 12:35:41,563 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 122 transitions. [2022-11-20 12:35:41,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-20 12:35:41,564 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:35:41,564 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:35:41,582 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-20 12:35:41,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:35:41,778 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:35:41,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:35:41,779 INFO L85 PathProgramCache]: Analyzing trace with hash 381005423, now seen corresponding path program 1 times [2022-11-20 12:35:41,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:35:41,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1360193756] [2022-11-20 12:35:41,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:35:41,780 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:35:41,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:35:41,781 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:35:41,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-20 12:35:41,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:41,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 12:35:41,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:35:49,285 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-20 12:35:49,285 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:35:49,285 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:35:49,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1360193756] [2022-11-20 12:35:49,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1360193756] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:35:49,286 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:35:49,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 12:35:49,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621937985] [2022-11-20 12:35:49,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:35:49,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:35:49,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:35:49,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:35:49,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=37, Unknown=2, NotChecked=0, Total=56 [2022-11-20 12:35:49,287 INFO L87 Difference]: Start difference. First operand 89 states and 122 transitions. Second operand has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 12:35:49,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:35:49,418 INFO L93 Difference]: Finished difference Result 95 states and 127 transitions. [2022-11-20 12:35:49,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 12:35:49,419 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 51 [2022-11-20 12:35:49,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:35:49,420 INFO L225 Difference]: With dead ends: 95 [2022-11-20 12:35:49,421 INFO L226 Difference]: Without dead ends: 91 [2022-11-20 12:35:49,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=21, Invalid=49, Unknown=2, NotChecked=0, Total=72 [2022-11-20 12:35:49,422 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 12 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 35 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:35:49,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 420 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 35 Unchecked, 0.1s Time] [2022-11-20 12:35:49,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2022-11-20 12:35:49,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 86. [2022-11-20 12:35:49,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 64 states have (on average 1.21875) internal successors, (78), 68 states have internal predecessors, (78), 12 states have call successors, (12), 5 states have call predecessors, (12), 9 states have return successors, (28), 12 states have call predecessors, (28), 11 states have call successors, (28) [2022-11-20 12:35:49,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 118 transitions. [2022-11-20 12:35:49,436 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 118 transitions. Word has length 51 [2022-11-20 12:35:49,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:35:49,438 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 118 transitions. [2022-11-20 12:35:49,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 12:35:49,438 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 118 transitions. [2022-11-20 12:35:49,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-20 12:35:49,439 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:35:49,439 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:35:49,455 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-20 12:35:49,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:35:49,654 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:35:49,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:35:49,654 INFO L85 PathProgramCache]: Analyzing trace with hash 57968830, now seen corresponding path program 1 times [2022-11-20 12:35:49,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:35:49,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [710635480] [2022-11-20 12:35:49,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:35:49,655 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:35:49,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:35:49,656 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:35:49,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-20 12:35:49,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:49,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 12:35:49,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:35:50,144 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-20 12:35:50,144 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:35:50,982 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-20 12:35:50,982 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:35:50,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [710635480] [2022-11-20 12:35:50,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [710635480] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:35:50,983 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:35:50,983 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2022-11-20 12:35:50,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649207975] [2022-11-20 12:35:50,983 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:35:50,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 12:35:50,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:35:50,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 12:35:50,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-11-20 12:35:50,985 INFO L87 Difference]: Start difference. First operand 86 states and 118 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 3 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 12:35:51,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:35:51,952 INFO L93 Difference]: Finished difference Result 112 states and 164 transitions. [2022-11-20 12:35:51,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:35:51,953 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 3 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 55 [2022-11-20 12:35:51,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:35:51,954 INFO L225 Difference]: With dead ends: 112 [2022-11-20 12:35:51,954 INFO L226 Difference]: Without dead ends: 99 [2022-11-20 12:35:51,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2022-11-20 12:35:51,956 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 157 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 12:35:51,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 349 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 12:35:51,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2022-11-20 12:35:51,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 89. [2022-11-20 12:35:51,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 66 states have (on average 1.2121212121212122) internal successors, (80), 71 states have internal predecessors, (80), 12 states have call successors, (12), 5 states have call predecessors, (12), 10 states have return successors, (31), 12 states have call predecessors, (31), 11 states have call successors, (31) [2022-11-20 12:35:51,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 123 transitions. [2022-11-20 12:35:51,973 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 123 transitions. Word has length 55 [2022-11-20 12:35:51,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:35:51,973 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 123 transitions. [2022-11-20 12:35:51,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 3 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 12:35:51,974 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 123 transitions. [2022-11-20 12:35:51,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-20 12:35:51,978 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:35:51,978 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2022-11-20 12:35:52,003 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-20 12:35:52,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:35:52,200 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:35:52,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:35:52,200 INFO L85 PathProgramCache]: Analyzing trace with hash -768011691, now seen corresponding path program 1 times [2022-11-20 12:35:52,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:35:52,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [691711733] [2022-11-20 12:35:52,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:35:52,201 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:35:52,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:35:52,202 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:35:52,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-20 12:35:52,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:52,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 12:35:52,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:35:52,937 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-20 12:35:52,938 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:35:53,968 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-20 12:35:53,968 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:35:53,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [691711733] [2022-11-20 12:35:53,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [691711733] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:35:53,968 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:35:53,969 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2022-11-20 12:35:53,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517457122] [2022-11-20 12:35:53,969 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:35:53,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 12:35:53,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:35:53,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 12:35:53,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-11-20 12:35:53,971 INFO L87 Difference]: Start difference. First operand 89 states and 123 transitions. Second operand has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 11 states have internal predecessors, (46), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-20 12:35:55,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:35:55,288 INFO L93 Difference]: Finished difference Result 112 states and 162 transitions. [2022-11-20 12:35:55,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 12:35:55,289 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 11 states have internal predecessors, (46), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 64 [2022-11-20 12:35:55,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:35:55,290 INFO L225 Difference]: With dead ends: 112 [2022-11-20 12:35:55,290 INFO L226 Difference]: Without dead ends: 99 [2022-11-20 12:35:55,291 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-20 12:35:55,292 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 97 mSDsluCounter, 425 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 505 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-20 12:35:55,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 505 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-20 12:35:55,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2022-11-20 12:35:55,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 89. [2022-11-20 12:35:55,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 66 states have (on average 1.2121212121212122) internal successors, (80), 71 states have internal predecessors, (80), 12 states have call successors, (12), 5 states have call predecessors, (12), 10 states have return successors, (30), 12 states have call predecessors, (30), 11 states have call successors, (30) [2022-11-20 12:35:55,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 122 transitions. [2022-11-20 12:35:55,306 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 122 transitions. Word has length 64 [2022-11-20 12:35:55,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:35:55,307 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 122 transitions. [2022-11-20 12:35:55,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 11 states have internal predecessors, (46), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-20 12:35:55,307 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 122 transitions. [2022-11-20 12:35:55,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-20 12:35:55,308 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:35:55,309 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:35:55,322 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-20 12:35:55,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:35:55,522 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:35:55,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:35:55,523 INFO L85 PathProgramCache]: Analyzing trace with hash -773215852, now seen corresponding path program 1 times [2022-11-20 12:35:55,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:35:55,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [53964471] [2022-11-20 12:35:55,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:35:55,523 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:35:55,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:35:55,524 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:35:55,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-20 12:35:55,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:55,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 12:35:55,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:35:56,174 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-20 12:35:56,175 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:35:57,127 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-20 12:35:57,127 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:35:57,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [53964471] [2022-11-20 12:35:57,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [53964471] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:35:57,127 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:35:57,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2022-11-20 12:35:57,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260351542] [2022-11-20 12:35:57,128 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:35:57,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 12:35:57,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:35:57,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 12:35:57,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-11-20 12:35:57,130 INFO L87 Difference]: Start difference. First operand 89 states and 122 transitions. Second operand has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 11 states have internal predecessors, (45), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-20 12:35:58,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:35:58,229 INFO L93 Difference]: Finished difference Result 110 states and 154 transitions. [2022-11-20 12:35:58,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:35:58,230 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 11 states have internal predecessors, (45), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 64 [2022-11-20 12:35:58,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:35:58,231 INFO L225 Difference]: With dead ends: 110 [2022-11-20 12:35:58,232 INFO L226 Difference]: Without dead ends: 96 [2022-11-20 12:35:58,232 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2022-11-20 12:35:58,233 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 117 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 527 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 12:35:58,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 527 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-20 12:35:58,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2022-11-20 12:35:58,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 86. [2022-11-20 12:35:58,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 64 states have (on average 1.203125) internal successors, (77), 68 states have internal predecessors, (77), 12 states have call successors, (12), 5 states have call predecessors, (12), 9 states have return successors, (27), 12 states have call predecessors, (27), 11 states have call successors, (27) [2022-11-20 12:35:58,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 116 transitions. [2022-11-20 12:35:58,248 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 116 transitions. Word has length 64 [2022-11-20 12:35:58,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:35:58,248 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 116 transitions. [2022-11-20 12:35:58,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 11 states have internal predecessors, (45), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-20 12:35:58,248 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 116 transitions. [2022-11-20 12:35:58,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-20 12:35:58,250 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:35:58,250 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2022-11-20 12:35:58,263 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-20 12:35:58,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:35:58,463 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:35:58,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:35:58,463 INFO L85 PathProgramCache]: Analyzing trace with hash 336770129, now seen corresponding path program 1 times [2022-11-20 12:35:58,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:35:58,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1046723113] [2022-11-20 12:35:58,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:35:58,464 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:35:58,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:35:58,465 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:35:58,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-20 12:35:58,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:58,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 12:35:58,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:35:59,143 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-20 12:35:59,143 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:36:00,189 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-20 12:36:00,189 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:36:00,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1046723113] [2022-11-20 12:36:00,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1046723113] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:36:00,189 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:36:00,189 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2022-11-20 12:36:00,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660855275] [2022-11-20 12:36:00,190 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:36:00,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 12:36:00,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:36:00,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 12:36:00,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-11-20 12:36:00,191 INFO L87 Difference]: Start difference. First operand 86 states and 116 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 11 states have internal predecessors, (48), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-20 12:36:01,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:36:01,276 INFO L93 Difference]: Finished difference Result 107 states and 148 transitions. [2022-11-20 12:36:01,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 12:36:01,277 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 11 states have internal predecessors, (48), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 66 [2022-11-20 12:36:01,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:36:01,278 INFO L225 Difference]: With dead ends: 107 [2022-11-20 12:36:01,278 INFO L226 Difference]: Without dead ends: 93 [2022-11-20 12:36:01,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-20 12:36:01,279 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 129 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:36:01,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 439 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 12:36:01,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-11-20 12:36:01,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 83. [2022-11-20 12:36:01,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 62 states have (on average 1.1935483870967742) internal successors, (74), 65 states have internal predecessors, (74), 12 states have call successors, (12), 5 states have call predecessors, (12), 8 states have return successors, (25), 12 states have call predecessors, (25), 11 states have call successors, (25) [2022-11-20 12:36:01,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 111 transitions. [2022-11-20 12:36:01,291 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 111 transitions. Word has length 66 [2022-11-20 12:36:01,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:36:01,292 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 111 transitions. [2022-11-20 12:36:01,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 11 states have internal predecessors, (48), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-20 12:36:01,292 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 111 transitions. [2022-11-20 12:36:01,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-20 12:36:01,293 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:36:01,293 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:36:01,311 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-20 12:36:01,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:36:01,494 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:36:01,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:36:01,494 INFO L85 PathProgramCache]: Analyzing trace with hash -644666623, now seen corresponding path program 1 times [2022-11-20 12:36:01,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:36:01,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [146916129] [2022-11-20 12:36:01,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:36:01,495 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:36:01,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:36:01,496 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:36:01,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-20 12:36:01,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:01,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-20 12:36:01,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:36:05,739 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-20 12:36:05,739 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:36:11,772 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-20 12:36:11,772 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:36:11,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [146916129] [2022-11-20 12:36:11,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [146916129] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:36:11,772 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:36:11,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 25 [2022-11-20 12:36:11,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667784329] [2022-11-20 12:36:11,773 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:36:11,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-20 12:36:11,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:36:11,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-20 12:36:11,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=517, Unknown=0, NotChecked=0, Total=600 [2022-11-20 12:36:11,776 INFO L87 Difference]: Start difference. First operand 83 states and 111 transitions. Second operand has 25 states, 25 states have (on average 2.52) internal successors, (63), 25 states have internal predecessors, (63), 8 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (11), 8 states have call predecessors, (11), 7 states have call successors, (11) [2022-11-20 12:36:18,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:36:18,413 INFO L93 Difference]: Finished difference Result 107 states and 151 transitions. [2022-11-20 12:36:18,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 12:36:18,414 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.52) internal successors, (63), 25 states have internal predecessors, (63), 8 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (11), 8 states have call predecessors, (11), 7 states have call successors, (11) Word has length 73 [2022-11-20 12:36:18,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:36:18,416 INFO L225 Difference]: With dead ends: 107 [2022-11-20 12:36:18,416 INFO L226 Difference]: Without dead ends: 98 [2022-11-20 12:36:18,417 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 13.2s TimeCoverageRelationStatistics Valid=179, Invalid=1011, Unknown=0, NotChecked=0, Total=1190 [2022-11-20 12:36:18,418 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 62 mSDsluCounter, 864 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 938 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 98 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:36:18,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 938 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 218 Invalid, 0 Unknown, 98 Unchecked, 1.5s Time] [2022-11-20 12:36:18,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2022-11-20 12:36:18,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 88. [2022-11-20 12:36:18,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 66 states have (on average 1.2121212121212122) internal successors, (80), 70 states have internal predecessors, (80), 12 states have call successors, (12), 5 states have call predecessors, (12), 9 states have return successors, (29), 12 states have call predecessors, (29), 11 states have call successors, (29) [2022-11-20 12:36:18,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 121 transitions. [2022-11-20 12:36:18,436 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 121 transitions. Word has length 73 [2022-11-20 12:36:18,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:36:18,436 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 121 transitions. [2022-11-20 12:36:18,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.52) internal successors, (63), 25 states have internal predecessors, (63), 8 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (11), 8 states have call predecessors, (11), 7 states have call successors, (11) [2022-11-20 12:36:18,437 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 121 transitions. [2022-11-20 12:36:18,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-20 12:36:18,438 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:36:18,438 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:36:18,453 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-11-20 12:36:18,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:36:18,653 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:36:18,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:36:18,653 INFO L85 PathProgramCache]: Analyzing trace with hash -719396020, now seen corresponding path program 1 times [2022-11-20 12:36:18,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:36:18,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2139785086] [2022-11-20 12:36:18,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:36:18,654 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:36:18,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:36:18,655 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:36:18,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-11-20 12:36:18,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:18,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-20 12:36:18,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:36:20,412 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-20 12:36:20,413 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:36:20,413 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:36:20,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2139785086] [2022-11-20 12:36:20,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2139785086] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:36:20,413 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:36:20,413 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 12:36:20,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813132451] [2022-11-20 12:36:20,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:36:20,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 12:36:20,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:36:20,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 12:36:20,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-20 12:36:20,415 INFO L87 Difference]: Start difference. First operand 88 states and 121 transitions. Second operand has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-20 12:36:22,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:36:22,600 INFO L93 Difference]: Finished difference Result 109 states and 148 transitions. [2022-11-20 12:36:22,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 12:36:22,604 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 73 [2022-11-20 12:36:22,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:36:22,606 INFO L225 Difference]: With dead ends: 109 [2022-11-20 12:36:22,606 INFO L226 Difference]: Without dead ends: 98 [2022-11-20 12:36:22,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2022-11-20 12:36:22,607 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 48 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 581 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:36:22,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 581 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-20 12:36:22,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2022-11-20 12:36:22,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 93. [2022-11-20 12:36:22,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 69 states have (on average 1.2028985507246377) internal successors, (83), 74 states have internal predecessors, (83), 13 states have call successors, (13), 5 states have call predecessors, (13), 10 states have return successors, (33), 13 states have call predecessors, (33), 12 states have call successors, (33) [2022-11-20 12:36:22,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 129 transitions. [2022-11-20 12:36:22,626 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 129 transitions. Word has length 73 [2022-11-20 12:36:22,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:36:22,627 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 129 transitions. [2022-11-20 12:36:22,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-20 12:36:22,628 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 129 transitions. [2022-11-20 12:36:22,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-20 12:36:22,629 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:36:22,629 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:36:22,647 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-11-20 12:36:22,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:36:22,847 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:36:22,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:36:22,847 INFO L85 PathProgramCache]: Analyzing trace with hash -425811905, now seen corresponding path program 1 times [2022-11-20 12:36:22,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:36:22,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1770403672] [2022-11-20 12:36:22,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:36:22,847 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:36:22,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:36:22,848 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:36:22,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-20 12:36:22,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:22,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-20 12:36:22,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:36:25,766 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-20 12:36:25,767 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:36:32,528 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-20 12:36:32,528 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:36:32,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1770403672] [2022-11-20 12:36:32,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1770403672] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:36:32,529 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:36:32,529 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16] total 28 [2022-11-20 12:36:32,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135388092] [2022-11-20 12:36:32,529 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:36:32,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-20 12:36:32,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:36:32,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-20 12:36:32,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=649, Unknown=0, NotChecked=0, Total=756 [2022-11-20 12:36:32,531 INFO L87 Difference]: Start difference. First operand 93 states and 129 transitions. Second operand has 28 states, 28 states have (on average 2.2142857142857144) internal successors, (62), 28 states have internal predecessors, (62), 8 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (11), 8 states have call predecessors, (11), 7 states have call successors, (11) [2022-11-20 12:36:47,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:36:47,157 INFO L93 Difference]: Finished difference Result 160 states and 217 transitions. [2022-11-20 12:36:47,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-20 12:36:47,158 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.2142857142857144) internal successors, (62), 28 states have internal predecessors, (62), 8 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (11), 8 states have call predecessors, (11), 7 states have call successors, (11) Word has length 73 [2022-11-20 12:36:47,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:36:47,159 INFO L225 Difference]: With dead ends: 160 [2022-11-20 12:36:47,159 INFO L226 Difference]: Without dead ends: 122 [2022-11-20 12:36:47,160 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 117 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 347 ImplicationChecksByTransitivity, 14.8s TimeCoverageRelationStatistics Valid=485, Invalid=2167, Unknown=0, NotChecked=0, Total=2652 [2022-11-20 12:36:47,161 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 263 mSDsluCounter, 862 mSDsCounter, 0 mSdLazyCounter, 772 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 950 SdHoareTripleChecker+Invalid, 856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:36:47,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [269 Valid, 950 Invalid, 856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 772 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2022-11-20 12:36:47,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2022-11-20 12:36:47,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 105. [2022-11-20 12:36:47,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 79 states have (on average 1.1898734177215189) internal successors, (94), 83 states have internal predecessors, (94), 15 states have call successors, (15), 6 states have call predecessors, (15), 10 states have return successors, (37), 15 states have call predecessors, (37), 14 states have call successors, (37) [2022-11-20 12:36:47,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 146 transitions. [2022-11-20 12:36:47,178 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 146 transitions. Word has length 73 [2022-11-20 12:36:47,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:36:47,179 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 146 transitions. [2022-11-20 12:36:47,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.2142857142857144) internal successors, (62), 28 states have internal predecessors, (62), 8 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (11), 8 states have call predecessors, (11), 7 states have call successors, (11) [2022-11-20 12:36:47,179 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 146 transitions. [2022-11-20 12:36:47,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-20 12:36:47,181 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:36:47,181 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:36:47,194 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-11-20 12:36:47,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:36:47,393 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:36:47,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:36:47,394 INFO L85 PathProgramCache]: Analyzing trace with hash 1804933507, now seen corresponding path program 2 times [2022-11-20 12:36:47,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:36:47,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [348580780] [2022-11-20 12:36:47,394 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:36:47,394 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:36:47,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:36:47,395 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:36:47,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-11-20 12:36:47,465 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:36:47,470 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:36:47,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-20 12:36:47,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:36:50,017 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-20 12:36:50,017 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:36:56,225 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-20 12:36:56,225 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:36:56,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [348580780] [2022-11-20 12:36:56,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [348580780] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:36:56,225 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:36:56,225 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16] total 28 [2022-11-20 12:36:56,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260186150] [2022-11-20 12:36:56,226 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:36:56,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-20 12:36:56,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:36:56,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-20 12:36:56,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=651, Unknown=0, NotChecked=0, Total=756 [2022-11-20 12:36:56,227 INFO L87 Difference]: Start difference. First operand 105 states and 146 transitions. Second operand has 28 states, 28 states have (on average 2.2142857142857144) internal successors, (62), 28 states have internal predecessors, (62), 8 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (11), 8 states have call predecessors, (11), 7 states have call successors, (11) [2022-11-20 12:37:13,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:37:13,385 INFO L93 Difference]: Finished difference Result 179 states and 247 transitions. [2022-11-20 12:37:13,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-20 12:37:13,388 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.2142857142857144) internal successors, (62), 28 states have internal predecessors, (62), 8 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (11), 8 states have call predecessors, (11), 7 states have call successors, (11) Word has length 73 [2022-11-20 12:37:13,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:37:13,389 INFO L225 Difference]: With dead ends: 179 [2022-11-20 12:37:13,389 INFO L226 Difference]: Without dead ends: 139 [2022-11-20 12:37:13,390 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 16.4s TimeCoverageRelationStatistics Valid=484, Invalid=2168, Unknown=0, NotChecked=0, Total=2652 [2022-11-20 12:37:13,391 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 338 mSDsluCounter, 812 mSDsCounter, 0 mSdLazyCounter, 724 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 899 SdHoareTripleChecker+Invalid, 825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 724 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:37:13,391 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [343 Valid, 899 Invalid, 825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 724 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2022-11-20 12:37:13,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2022-11-20 12:37:13,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 122. [2022-11-20 12:37:13,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 92 states have (on average 1.173913043478261) internal successors, (108), 96 states have internal predecessors, (108), 18 states have call successors, (18), 7 states have call predecessors, (18), 11 states have return successors, (46), 18 states have call predecessors, (46), 17 states have call successors, (46) [2022-11-20 12:37:13,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 172 transitions. [2022-11-20 12:37:13,428 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 172 transitions. Word has length 73 [2022-11-20 12:37:13,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:37:13,429 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 172 transitions. [2022-11-20 12:37:13,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.2142857142857144) internal successors, (62), 28 states have internal predecessors, (62), 8 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (11), 8 states have call predecessors, (11), 7 states have call successors, (11) [2022-11-20 12:37:13,429 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 172 transitions. [2022-11-20 12:37:13,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-20 12:37:13,430 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:37:13,431 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:37:13,449 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-11-20 12:37:13,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:37:13,644 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:37:13,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:37:13,644 INFO L85 PathProgramCache]: Analyzing trace with hash 555904934, now seen corresponding path program 1 times [2022-11-20 12:37:13,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:37:13,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1120474344] [2022-11-20 12:37:13,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:37:13,645 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:37:13,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:37:13,646 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:37:13,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-11-20 12:37:13,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:37:13,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 12:37:13,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:37:14,187 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-20 12:37:14,187 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:37:14,187 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:37:14,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1120474344] [2022-11-20 12:37:14,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1120474344] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:37:14,188 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:37:14,188 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 12:37:14,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788566669] [2022-11-20 12:37:14,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:37:14,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:37:14,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:37:14,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:37:14,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:37:14,190 INFO L87 Difference]: Start difference. First operand 122 states and 172 transitions. Second operand has 8 states, 7 states have (on average 5.0) internal successors, (35), 6 states have internal predecessors, (35), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-20 12:37:14,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:37:14,600 INFO L93 Difference]: Finished difference Result 136 states and 187 transitions. [2022-11-20 12:37:14,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 12:37:14,601 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.0) internal successors, (35), 6 states have internal predecessors, (35), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 75 [2022-11-20 12:37:14,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:37:14,602 INFO L225 Difference]: With dead ends: 136 [2022-11-20 12:37:14,603 INFO L226 Difference]: Without dead ends: 127 [2022-11-20 12:37:14,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:37:14,604 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 7 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:37:14,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 354 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 12:37:14,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2022-11-20 12:37:14,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 122. [2022-11-20 12:37:14,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 92 states have (on average 1.173913043478261) internal successors, (108), 96 states have internal predecessors, (108), 18 states have call successors, (18), 7 states have call predecessors, (18), 11 states have return successors, (44), 18 states have call predecessors, (44), 17 states have call successors, (44) [2022-11-20 12:37:14,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 170 transitions. [2022-11-20 12:37:14,635 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 170 transitions. Word has length 75 [2022-11-20 12:37:14,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:37:14,635 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 170 transitions. [2022-11-20 12:37:14,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.0) internal successors, (35), 6 states have internal predecessors, (35), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-20 12:37:14,636 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 170 transitions. [2022-11-20 12:37:14,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-20 12:37:14,637 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:37:14,637 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:37:14,651 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-11-20 12:37:14,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:37:14,851 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:37:14,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:37:14,851 INFO L85 PathProgramCache]: Analyzing trace with hash 481175537, now seen corresponding path program 1 times [2022-11-20 12:37:14,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:37:14,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [127565505] [2022-11-20 12:37:14,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:37:14,852 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:37:14,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:37:14,852 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:37:14,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-11-20 12:37:14,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:37:14,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-20 12:37:14,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:37:18,294 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-20 12:37:18,294 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:37:20,239 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:37:20,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [127565505] [2022-11-20 12:37:20,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [127565505] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:37:20,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [673569259] [2022-11-20 12:37:20,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:37:20,239 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 12:37:20,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/cvc4 [2022-11-20 12:37:20,241 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 12:37:20,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (28)] Waiting until timeout for monitored process [2022-11-20 12:37:20,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:37:20,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 12:37:20,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:37:21,556 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-20 12:37:21,556 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:37:21,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [673569259] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:37:21,559 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:37:21,559 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [14] total 17 [2022-11-20 12:37:21,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679201404] [2022-11-20 12:37:21,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:37:21,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:37:21,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:37:21,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:37:21,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2022-11-20 12:37:21,561 INFO L87 Difference]: Start difference. First operand 122 states and 170 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-20 12:37:21,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:37:21,873 INFO L93 Difference]: Finished difference Result 149 states and 217 transitions. [2022-11-20 12:37:21,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:37:21,874 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 75 [2022-11-20 12:37:21,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:37:21,875 INFO L225 Difference]: With dead ends: 149 [2022-11-20 12:37:21,875 INFO L226 Difference]: Without dead ends: 138 [2022-11-20 12:37:21,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2022-11-20 12:37:21,876 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 22 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:37:21,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 286 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 12:37:21,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2022-11-20 12:37:21,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 129. [2022-11-20 12:37:21,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 96 states have (on average 1.1666666666666667) internal successors, (112), 101 states have internal predecessors, (112), 20 states have call successors, (20), 7 states have call predecessors, (20), 12 states have return successors, (50), 20 states have call predecessors, (50), 19 states have call successors, (50) [2022-11-20 12:37:21,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 182 transitions. [2022-11-20 12:37:21,907 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 182 transitions. Word has length 75 [2022-11-20 12:37:21,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:37:21,908 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 182 transitions. [2022-11-20 12:37:21,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-20 12:37:21,908 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 182 transitions. [2022-11-20 12:37:21,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-20 12:37:21,909 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:37:21,910 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:37:21,919 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (28)] Forceful destruction successful, exit code 0 [2022-11-20 12:37:22,134 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-11-20 12:37:22,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:37:22,312 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:37:22,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:37:22,312 INFO L85 PathProgramCache]: Analyzing trace with hash 700030255, now seen corresponding path program 1 times [2022-11-20 12:37:22,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:37:22,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1405214552] [2022-11-20 12:37:22,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:37:22,313 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:37:22,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:37:22,314 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:37:22,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-11-20 12:37:22,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:37:22,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-20 12:37:22,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:37:25,130 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-20 12:37:25,130 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:37:32,072 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-20 12:37:32,072 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:37:32,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1405214552] [2022-11-20 12:37:32,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1405214552] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:37:32,072 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:37:32,072 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16] total 28 [2022-11-20 12:37:32,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401063431] [2022-11-20 12:37:32,073 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:37:32,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-20 12:37:32,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:37:32,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-20 12:37:32,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=623, Unknown=0, NotChecked=0, Total=756 [2022-11-20 12:37:32,074 INFO L87 Difference]: Start difference. First operand 129 states and 182 transitions. Second operand has 28 states, 28 states have (on average 2.2857142857142856) internal successors, (64), 28 states have internal predecessors, (64), 8 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (11), 8 states have call predecessors, (11), 7 states have call successors, (11) [2022-11-20 12:37:42,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:37:42,372 INFO L93 Difference]: Finished difference Result 161 states and 217 transitions. [2022-11-20 12:37:42,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-20 12:37:42,373 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.2857142857142856) internal successors, (64), 28 states have internal predecessors, (64), 8 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (11), 8 states have call predecessors, (11), 7 states have call successors, (11) Word has length 75 [2022-11-20 12:37:42,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:37:42,375 INFO L225 Difference]: With dead ends: 161 [2022-11-20 12:37:42,375 INFO L226 Difference]: Without dead ends: 141 [2022-11-20 12:37:42,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 11.6s TimeCoverageRelationStatistics Valid=381, Invalid=1511, Unknown=0, NotChecked=0, Total=1892 [2022-11-20 12:37:42,376 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 186 mSDsluCounter, 830 mSDsCounter, 0 mSdLazyCounter, 604 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 914 SdHoareTripleChecker+Invalid, 664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-11-20 12:37:42,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 914 Invalid, 664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 604 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2022-11-20 12:37:42,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2022-11-20 12:37:42,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 131. [2022-11-20 12:37:42,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 98 states have (on average 1.163265306122449) internal successors, (114), 102 states have internal predecessors, (114), 20 states have call successors, (20), 8 states have call predecessors, (20), 12 states have return successors, (45), 20 states have call predecessors, (45), 19 states have call successors, (45) [2022-11-20 12:37:42,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 179 transitions. [2022-11-20 12:37:42,406 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 179 transitions. Word has length 75 [2022-11-20 12:37:42,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:37:42,406 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 179 transitions. [2022-11-20 12:37:42,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.2857142857142856) internal successors, (64), 28 states have internal predecessors, (64), 8 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (11), 8 states have call predecessors, (11), 7 states have call successors, (11) [2022-11-20 12:37:42,406 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 179 transitions. [2022-11-20 12:37:42,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-20 12:37:42,408 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:37:42,408 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:37:42,426 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2022-11-20 12:37:42,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:37:42,622 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:37:42,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:37:42,622 INFO L85 PathProgramCache]: Analyzing trace with hash 904822259, now seen corresponding path program 2 times [2022-11-20 12:37:42,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:37:42,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1375374843] [2022-11-20 12:37:42,623 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:37:42,623 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:37:42,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:37:42,624 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:37:42,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-11-20 12:37:42,721 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:37:42,721 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:37:42,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-20 12:37:42,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:37:45,343 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-20 12:37:45,343 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:37:52,005 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-20 12:37:52,005 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:37:52,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1375374843] [2022-11-20 12:37:52,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1375374843] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:37:52,006 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:37:52,006 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16] total 28 [2022-11-20 12:37:52,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055259344] [2022-11-20 12:37:52,006 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:37:52,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-20 12:37:52,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:37:52,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-20 12:37:52,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=629, Unknown=0, NotChecked=0, Total=756 [2022-11-20 12:37:52,008 INFO L87 Difference]: Start difference. First operand 131 states and 179 transitions. Second operand has 28 states, 28 states have (on average 2.2857142857142856) internal successors, (64), 28 states have internal predecessors, (64), 8 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (11), 8 states have call predecessors, (11), 7 states have call successors, (11) [2022-11-20 12:38:03,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:38:03,676 INFO L93 Difference]: Finished difference Result 163 states and 214 transitions. [2022-11-20 12:38:03,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-20 12:38:03,678 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.2857142857142856) internal successors, (64), 28 states have internal predecessors, (64), 8 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (11), 8 states have call predecessors, (11), 7 states have call successors, (11) Word has length 75 [2022-11-20 12:38:03,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:38:03,678 INFO L225 Difference]: With dead ends: 163 [2022-11-20 12:38:03,678 INFO L226 Difference]: Without dead ends: 149 [2022-11-20 12:38:03,679 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 12.4s TimeCoverageRelationStatistics Valid=375, Invalid=1517, Unknown=0, NotChecked=0, Total=1892 [2022-11-20 12:38:03,679 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 186 mSDsluCounter, 961 mSDsCounter, 0 mSdLazyCounter, 671 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 1046 SdHoareTripleChecker+Invalid, 720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 671 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:38:03,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 1046 Invalid, 720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 671 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2022-11-20 12:38:03,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2022-11-20 12:38:03,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 139. [2022-11-20 12:38:03,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 105 states have (on average 1.161904761904762) internal successors, (122), 108 states have internal predecessors, (122), 21 states have call successors, (21), 9 states have call predecessors, (21), 12 states have return successors, (43), 21 states have call predecessors, (43), 20 states have call successors, (43) [2022-11-20 12:38:03,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 186 transitions. [2022-11-20 12:38:03,714 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 186 transitions. Word has length 75 [2022-11-20 12:38:03,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:38:03,714 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 186 transitions. [2022-11-20 12:38:03,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.2857142857142856) internal successors, (64), 28 states have internal predecessors, (64), 8 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (11), 8 states have call predecessors, (11), 7 states have call successors, (11) [2022-11-20 12:38:03,715 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 186 transitions. [2022-11-20 12:38:03,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-20 12:38:03,716 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:38:03,716 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:38:03,733 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Ended with exit code 0 [2022-11-20 12:38:03,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:38:03,929 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:38:03,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:38:03,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1627177794, now seen corresponding path program 1 times [2022-11-20 12:38:03,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:38:03,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1733771794] [2022-11-20 12:38:03,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:38:03,930 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:38:03,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:38:03,931 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:38:03,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-11-20 12:38:04,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:38:04,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 43 conjunts are in the unsatisfiable core [2022-11-20 12:38:04,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:38:10,040 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-20 12:38:10,040 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:38:31,804 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-20 12:38:31,804 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:38:31,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1733771794] [2022-11-20 12:38:31,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1733771794] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:38:31,804 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:38:31,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 24] total 44 [2022-11-20 12:38:31,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222880585] [2022-11-20 12:38:31,804 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:38:31,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-11-20 12:38:31,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:38:31,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-11-20 12:38:31,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=237, Invalid=1655, Unknown=0, NotChecked=0, Total=1892 [2022-11-20 12:38:31,806 INFO L87 Difference]: Start difference. First operand 139 states and 186 transitions. Second operand has 44 states, 42 states have (on average 1.7380952380952381) internal successors, (73), 41 states have internal predecessors, (73), 10 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (13), 11 states have call predecessors, (13), 9 states have call successors, (13) [2022-11-20 12:38:36,518 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:38:37,634 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:39:07,517 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:39:09,514 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:39:16,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:39:16,947 INFO L93 Difference]: Finished difference Result 170 states and 219 transitions. [2022-11-20 12:39:16,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-11-20 12:39:16,948 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 42 states have (on average 1.7380952380952381) internal successors, (73), 41 states have internal predecessors, (73), 10 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (13), 11 states have call predecessors, (13), 9 states have call successors, (13) Word has length 82 [2022-11-20 12:39:16,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:39:16,950 INFO L225 Difference]: With dead ends: 170 [2022-11-20 12:39:16,950 INFO L226 Difference]: Without dead ends: 157 [2022-11-20 12:39:16,951 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 857 ImplicationChecksByTransitivity, 44.9s TimeCoverageRelationStatistics Valid=787, Invalid=5065, Unknown=0, NotChecked=0, Total=5852 [2022-11-20 12:39:16,952 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 328 mSDsluCounter, 1190 mSDsCounter, 0 mSdLazyCounter, 1503 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 1255 SdHoareTripleChecker+Invalid, 1653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 1503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:39:16,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [332 Valid, 1255 Invalid, 1653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 1503 Invalid, 0 Unknown, 0 Unchecked, 21.3s Time] [2022-11-20 12:39:16,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2022-11-20 12:39:16,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 141. [2022-11-20 12:39:16,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 107 states have (on average 1.158878504672897) internal successors, (124), 109 states have internal predecessors, (124), 21 states have call successors, (21), 9 states have call predecessors, (21), 12 states have return successors, (41), 22 states have call predecessors, (41), 20 states have call successors, (41) [2022-11-20 12:39:16,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 186 transitions. [2022-11-20 12:39:16,989 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 186 transitions. Word has length 82 [2022-11-20 12:39:16,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:39:16,990 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 186 transitions. [2022-11-20 12:39:16,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 42 states have (on average 1.7380952380952381) internal successors, (73), 41 states have internal predecessors, (73), 10 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (13), 11 states have call predecessors, (13), 9 states have call successors, (13) [2022-11-20 12:39:16,990 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 186 transitions. [2022-11-20 12:39:16,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-20 12:39:16,992 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:39:16,992 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:39:17,011 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2022-11-20 12:39:17,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:39:17,206 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:39:17,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:39:17,206 INFO L85 PathProgramCache]: Analyzing trace with hash 749736082, now seen corresponding path program 1 times [2022-11-20 12:39:17,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:39:17,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [299055633] [2022-11-20 12:39:17,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:39:17,206 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:39:17,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:39:17,207 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:39:17,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-11-20 12:39:17,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:39:17,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-20 12:39:17,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:39:19,339 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-20 12:39:19,339 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:39:24,290 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-20 12:39:24,290 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:39:24,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [299055633] [2022-11-20 12:39:24,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [299055633] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:39:24,291 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:39:24,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 26 [2022-11-20 12:39:24,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84371196] [2022-11-20 12:39:24,291 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:39:24,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-20 12:39:24,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:39:24,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-20 12:39:24,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2022-11-20 12:39:24,292 INFO L87 Difference]: Start difference. First operand 141 states and 186 transitions. Second operand has 26 states, 26 states have (on average 2.3461538461538463) internal successors, (61), 26 states have internal predecessors, (61), 9 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (12), 9 states have call predecessors, (12), 8 states have call successors, (12) [2022-11-20 12:39:32,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:39:32,716 INFO L93 Difference]: Finished difference Result 160 states and 206 transitions. [2022-11-20 12:39:32,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-20 12:39:32,718 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.3461538461538463) internal successors, (61), 26 states have internal predecessors, (61), 9 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (12), 9 states have call predecessors, (12), 8 states have call successors, (12) Word has length 79 [2022-11-20 12:39:32,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:39:32,720 INFO L225 Difference]: With dead ends: 160 [2022-11-20 12:39:32,720 INFO L226 Difference]: Without dead ends: 131 [2022-11-20 12:39:32,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=323, Invalid=1399, Unknown=0, NotChecked=0, Total=1722 [2022-11-20 12:39:32,721 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 221 mSDsluCounter, 750 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 829 SdHoareTripleChecker+Invalid, 584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:39:32,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 829 Invalid, 584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 520 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-11-20 12:39:32,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2022-11-20 12:39:32,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 126. [2022-11-20 12:39:32,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 95 states have (on average 1.1473684210526316) internal successors, (109), 97 states have internal predecessors, (109), 19 states have call successors, (19), 8 states have call predecessors, (19), 11 states have return successors, (38), 20 states have call predecessors, (38), 18 states have call successors, (38) [2022-11-20 12:39:32,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 166 transitions. [2022-11-20 12:39:32,754 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 166 transitions. Word has length 79 [2022-11-20 12:39:32,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:39:32,755 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 166 transitions. [2022-11-20 12:39:32,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.3461538461538463) internal successors, (61), 26 states have internal predecessors, (61), 9 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (12), 9 states have call predecessors, (12), 8 states have call successors, (12) [2022-11-20 12:39:32,755 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 166 transitions. [2022-11-20 12:39:32,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-20 12:39:32,756 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:39:32,757 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:39:32,775 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2022-11-20 12:39:32,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:39:32,969 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:39:32,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:39:32,970 INFO L85 PathProgramCache]: Analyzing trace with hash -2114830850, now seen corresponding path program 2 times [2022-11-20 12:39:32,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:39:32,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [43169449] [2022-11-20 12:39:32,970 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:39:32,970 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:39:32,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:39:32,972 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:39:33,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2022-11-20 12:39:33,164 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:39:33,164 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:39:33,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 43 conjunts are in the unsatisfiable core [2022-11-20 12:39:33,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:39:39,067 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-20 12:39:39,067 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:40:01,231 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-20 12:40:01,231 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:40:01,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [43169449] [2022-11-20 12:40:01,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [43169449] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:40:01,232 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:40:01,232 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 24] total 44 [2022-11-20 12:40:01,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070441760] [2022-11-20 12:40:01,232 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:40:01,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-11-20 12:40:01,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:40:01,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-11-20 12:40:01,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=227, Invalid=1665, Unknown=0, NotChecked=0, Total=1892 [2022-11-20 12:40:01,234 INFO L87 Difference]: Start difference. First operand 126 states and 166 transitions. Second operand has 44 states, 42 states have (on average 1.7380952380952381) internal successors, (73), 41 states have internal predecessors, (73), 10 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (13), 11 states have call predecessors, (13), 9 states have call successors, (13) [2022-11-20 12:40:40,018 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:40:47,179 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:40:52,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:40:52,215 INFO L93 Difference]: Finished difference Result 153 states and 195 transitions. [2022-11-20 12:40:52,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-11-20 12:40:52,217 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 42 states have (on average 1.7380952380952381) internal successors, (73), 41 states have internal predecessors, (73), 10 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (13), 11 states have call predecessors, (13), 9 states have call successors, (13) Word has length 82 [2022-11-20 12:40:52,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:40:52,217 INFO L225 Difference]: With dead ends: 153 [2022-11-20 12:40:52,217 INFO L226 Difference]: Without dead ends: 140 [2022-11-20 12:40:52,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 891 ImplicationChecksByTransitivity, 52.1s TimeCoverageRelationStatistics Valid=775, Invalid=5387, Unknown=0, NotChecked=0, Total=6162 [2022-11-20 12:40:52,219 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 294 mSDsluCounter, 1100 mSDsCounter, 0 mSdLazyCounter, 1567 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 1167 SdHoareTripleChecker+Invalid, 1712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 1567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:40:52,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [299 Valid, 1167 Invalid, 1712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 1567 Invalid, 0 Unknown, 0 Unchecked, 20.2s Time] [2022-11-20 12:40:52,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2022-11-20 12:40:52,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 127. [2022-11-20 12:40:52,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 96 states have (on average 1.1458333333333333) internal successors, (110), 98 states have internal predecessors, (110), 19 states have call successors, (19), 8 states have call predecessors, (19), 11 states have return successors, (37), 20 states have call predecessors, (37), 18 states have call successors, (37) [2022-11-20 12:40:52,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 166 transitions. [2022-11-20 12:40:52,257 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 166 transitions. Word has length 82 [2022-11-20 12:40:52,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:40:52,258 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 166 transitions. [2022-11-20 12:40:52,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 42 states have (on average 1.7380952380952381) internal successors, (73), 41 states have internal predecessors, (73), 10 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (13), 11 states have call predecessors, (13), 9 states have call successors, (13) [2022-11-20 12:40:52,258 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 166 transitions. [2022-11-20 12:40:52,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-20 12:40:52,259 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:40:52,261 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:40:52,274 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2022-11-20 12:40:52,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:40:52,473 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:40:52,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:40:52,474 INFO L85 PathProgramCache]: Analyzing trace with hash -2142271786, now seen corresponding path program 2 times [2022-11-20 12:40:52,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:40:52,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [178923584] [2022-11-20 12:40:52,474 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:40:52,474 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:40:52,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:40:52,475 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:40:52,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2022-11-20 12:40:52,583 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:40:52,583 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:40:52,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-20 12:40:52,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:40:55,108 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-20 12:40:55,108 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:41:00,824 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-20 12:41:00,824 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:41:00,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [178923584] [2022-11-20 12:41:00,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [178923584] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:41:00,824 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:41:00,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 27 [2022-11-20 12:41:00,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313145856] [2022-11-20 12:41:00,824 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:41:00,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-20 12:41:00,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:41:00,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-20 12:41:00,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=601, Unknown=0, NotChecked=0, Total=702 [2022-11-20 12:41:00,826 INFO L87 Difference]: Start difference. First operand 127 states and 166 transitions. Second operand has 27 states, 27 states have (on average 2.259259259259259) internal successors, (61), 27 states have internal predecessors, (61), 9 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (12), 9 states have call predecessors, (12), 8 states have call successors, (12) [2022-11-20 12:41:12,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:41:12,369 INFO L93 Difference]: Finished difference Result 141 states and 180 transitions. [2022-11-20 12:41:12,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-20 12:41:12,371 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.259259259259259) internal successors, (61), 27 states have internal predecessors, (61), 9 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (12), 9 states have call predecessors, (12), 8 states have call successors, (12) Word has length 79 [2022-11-20 12:41:12,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:41:12,373 INFO L225 Difference]: With dead ends: 141 [2022-11-20 12:41:12,373 INFO L226 Difference]: Without dead ends: 112 [2022-11-20 12:41:12,374 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 268 ImplicationChecksByTransitivity, 12.5s TimeCoverageRelationStatistics Valid=381, Invalid=1689, Unknown=0, NotChecked=0, Total=2070 [2022-11-20 12:41:12,375 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 144 mSDsluCounter, 688 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 762 SdHoareTripleChecker+Invalid, 509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:41:12,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 762 Invalid, 509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 460 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-11-20 12:41:12,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2022-11-20 12:41:12,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2022-11-20 12:41:12,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 84 states have (on average 1.1547619047619047) internal successors, (97), 86 states have internal predecessors, (97), 17 states have call successors, (17), 7 states have call predecessors, (17), 10 states have return successors, (34), 18 states have call predecessors, (34), 16 states have call successors, (34) [2022-11-20 12:41:12,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 148 transitions. [2022-11-20 12:41:12,412 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 148 transitions. Word has length 79 [2022-11-20 12:41:12,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:41:12,413 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 148 transitions. [2022-11-20 12:41:12,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.259259259259259) internal successors, (61), 27 states have internal predecessors, (61), 9 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (12), 9 states have call predecessors, (12), 8 states have call successors, (12) [2022-11-20 12:41:12,413 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 148 transitions. [2022-11-20 12:41:12,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-20 12:41:12,414 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:41:12,415 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:41:12,433 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2022-11-20 12:41:12,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:41:12,628 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:41:12,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:41:12,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1402295107, now seen corresponding path program 1 times [2022-11-20 12:41:12,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:41:12,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [746342863] [2022-11-20 12:41:12,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:41:12,629 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:41:12,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:41:12,630 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:41:12,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2022-11-20 12:41:12,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:41:12,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 12:41:12,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:41:13,687 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-20 12:41:13,688 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:41:15,326 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-20 12:41:15,326 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:41:15,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [746342863] [2022-11-20 12:41:15,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [746342863] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:41:15,327 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:41:15,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2022-11-20 12:41:15,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269066827] [2022-11-20 12:41:15,327 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:41:15,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 12:41:15,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:41:15,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 12:41:15,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-11-20 12:41:15,328 INFO L87 Difference]: Start difference. First operand 112 states and 148 transitions. Second operand has 15 states, 15 states have (on average 4.466666666666667) internal successors, (67), 15 states have internal predecessors, (67), 8 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 8 states have call predecessors, (10), 7 states have call successors, (10) [2022-11-20 12:41:17,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:41:17,890 INFO L93 Difference]: Finished difference Result 121 states and 156 transitions. [2022-11-20 12:41:17,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 12:41:17,892 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.466666666666667) internal successors, (67), 15 states have internal predecessors, (67), 8 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 8 states have call predecessors, (10), 7 states have call successors, (10) Word has length 83 [2022-11-20 12:41:17,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:41:17,892 INFO L225 Difference]: With dead ends: 121 [2022-11-20 12:41:17,893 INFO L226 Difference]: Without dead ends: 108 [2022-11-20 12:41:17,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2022-11-20 12:41:17,893 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 139 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 605 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:41:17,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 605 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-20 12:41:17,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2022-11-20 12:41:17,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2022-11-20 12:41:17,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 81 states have (on average 1.1604938271604939) internal successors, (94), 84 states have internal predecessors, (94), 16 states have call successors, (16), 6 states have call predecessors, (16), 10 states have return successors, (32), 17 states have call predecessors, (32), 15 states have call successors, (32) [2022-11-20 12:41:17,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 142 transitions. [2022-11-20 12:41:17,930 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 142 transitions. Word has length 83 [2022-11-20 12:41:17,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:41:17,930 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 142 transitions. [2022-11-20 12:41:17,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.466666666666667) internal successors, (67), 15 states have internal predecessors, (67), 8 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 8 states have call predecessors, (10), 7 states have call successors, (10) [2022-11-20 12:41:17,931 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 142 transitions. [2022-11-20 12:41:17,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-20 12:41:17,932 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:41:17,932 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:41:17,947 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2022-11-20 12:41:18,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:41:18,146 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:41:18,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:41:18,147 INFO L85 PathProgramCache]: Analyzing trace with hash 1128450436, now seen corresponding path program 1 times [2022-11-20 12:41:18,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:41:18,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [670798216] [2022-11-20 12:41:18,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:41:18,147 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:41:18,147 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:41:18,148 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:41:18,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2022-11-20 12:41:18,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:41:18,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-20 12:41:18,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:41:22,912 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-20 12:41:22,912 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:41:33,699 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-20 12:41:33,699 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:41:33,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [670798216] [2022-11-20 12:41:33,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [670798216] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:41:33,700 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:41:33,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 32 [2022-11-20 12:41:33,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336228260] [2022-11-20 12:41:33,700 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:41:33,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-20 12:41:33,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:41:33,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-20 12:41:33,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=864, Unknown=0, NotChecked=0, Total=992 [2022-11-20 12:41:33,702 INFO L87 Difference]: Start difference. First operand 108 states and 142 transitions. Second operand has 32 states, 32 states have (on average 2.0625) internal successors, (66), 32 states have internal predecessors, (66), 10 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (13), 10 states have call predecessors, (13), 9 states have call successors, (13) [2022-11-20 12:42:02,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:42:02,235 INFO L93 Difference]: Finished difference Result 160 states and 203 transitions. [2022-11-20 12:42:02,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-20 12:42:02,237 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.0625) internal successors, (66), 32 states have internal predecessors, (66), 10 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (13), 10 states have call predecessors, (13), 9 states have call successors, (13) Word has length 80 [2022-11-20 12:42:02,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:42:02,239 INFO L225 Difference]: With dead ends: 160 [2022-11-20 12:42:02,239 INFO L226 Difference]: Without dead ends: 134 [2022-11-20 12:42:02,241 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 628 ImplicationChecksByTransitivity, 27.6s TimeCoverageRelationStatistics Valid=641, Invalid=3391, Unknown=0, NotChecked=0, Total=4032 [2022-11-20 12:42:02,242 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 199 mSDsluCounter, 843 mSDsCounter, 0 mSdLazyCounter, 1051 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 920 SdHoareTripleChecker+Invalid, 1158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 1051 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:42:02,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 920 Invalid, 1158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 1051 Invalid, 0 Unknown, 0 Unchecked, 11.1s Time] [2022-11-20 12:42:02,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2022-11-20 12:42:02,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 120. [2022-11-20 12:42:02,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 91 states have (on average 1.1538461538461537) internal successors, (105), 93 states have internal predecessors, (105), 18 states have call successors, (18), 7 states have call predecessors, (18), 10 states have return successors, (34), 19 states have call predecessors, (34), 17 states have call successors, (34) [2022-11-20 12:42:02,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 157 transitions. [2022-11-20 12:42:02,279 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 157 transitions. Word has length 80 [2022-11-20 12:42:02,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:42:02,279 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 157 transitions. [2022-11-20 12:42:02,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.0625) internal successors, (66), 32 states have internal predecessors, (66), 10 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (13), 10 states have call predecessors, (13), 9 states have call successors, (13) [2022-11-20 12:42:02,280 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 157 transitions. [2022-11-20 12:42:02,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-20 12:42:02,281 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:42:02,281 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:42:02,299 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2022-11-20 12:42:02,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:42:02,495 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:42:02,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:42:02,495 INFO L85 PathProgramCache]: Analyzing trace with hash -1440446079, now seen corresponding path program 2 times [2022-11-20 12:42:02,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:42:02,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [156000154] [2022-11-20 12:42:02,495 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:42:02,496 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:42:02,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:42:02,496 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:42:02,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2022-11-20 12:42:02,581 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:42:02,581 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:42:02,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 12:42:02,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:42:03,440 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-20 12:42:03,440 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:42:05,008 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-20 12:42:05,008 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:42:05,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [156000154] [2022-11-20 12:42:05,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [156000154] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:42:05,008 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:42:05,009 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2022-11-20 12:42:05,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804117152] [2022-11-20 12:42:05,009 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:42:05,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 12:42:05,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:42:05,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 12:42:05,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-11-20 12:42:05,010 INFO L87 Difference]: Start difference. First operand 120 states and 157 transitions. Second operand has 15 states, 15 states have (on average 4.466666666666667) internal successors, (67), 15 states have internal predecessors, (67), 8 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 8 states have call predecessors, (10), 7 states have call successors, (10) [2022-11-20 12:42:07,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:42:07,508 INFO L93 Difference]: Finished difference Result 127 states and 163 transitions. [2022-11-20 12:42:07,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 12:42:07,509 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.466666666666667) internal successors, (67), 15 states have internal predecessors, (67), 8 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 8 states have call predecessors, (10), 7 states have call successors, (10) Word has length 83 [2022-11-20 12:42:07,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:42:07,512 INFO L225 Difference]: With dead ends: 127 [2022-11-20 12:42:07,513 INFO L226 Difference]: Without dead ends: 107 [2022-11-20 12:42:07,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=102, Invalid=360, Unknown=0, NotChecked=0, Total=462 [2022-11-20 12:42:07,514 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 128 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 606 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:42:07,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 606 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-20 12:42:07,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2022-11-20 12:42:07,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2022-11-20 12:42:07,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 80 states have (on average 1.1625) internal successors, (93), 84 states have internal predecessors, (93), 16 states have call successors, (16), 6 states have call predecessors, (16), 10 states have return successors, (30), 16 states have call predecessors, (30), 15 states have call successors, (30) [2022-11-20 12:42:07,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 139 transitions. [2022-11-20 12:42:07,542 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 139 transitions. Word has length 83 [2022-11-20 12:42:07,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:42:07,543 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 139 transitions. [2022-11-20 12:42:07,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.466666666666667) internal successors, (67), 15 states have internal predecessors, (67), 8 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 8 states have call predecessors, (10), 7 states have call successors, (10) [2022-11-20 12:42:07,543 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 139 transitions. [2022-11-20 12:42:07,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-20 12:42:07,544 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:42:07,544 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:42:07,563 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Ended with exit code 0 [2022-11-20 12:42:07,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:42:07,759 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:42:07,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:42:07,759 INFO L85 PathProgramCache]: Analyzing trace with hash -1457098876, now seen corresponding path program 2 times [2022-11-20 12:42:07,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:42:07,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [240386859] [2022-11-20 12:42:07,760 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:42:07,760 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:42:07,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:42:07,761 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:42:07,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2022-11-20 12:42:07,912 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:42:07,912 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:42:07,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-20 12:42:07,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:42:12,189 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-20 12:42:12,190 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:42:23,232 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-20 12:42:23,233 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:42:23,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [240386859] [2022-11-20 12:42:23,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [240386859] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:42:23,233 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:42:23,233 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 33 [2022-11-20 12:42:23,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667416921] [2022-11-20 12:42:23,233 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:42:23,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-11-20 12:42:23,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:42:23,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-11-20 12:42:23,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=921, Unknown=0, NotChecked=0, Total=1056 [2022-11-20 12:42:23,235 INFO L87 Difference]: Start difference. First operand 107 states and 139 transitions. Second operand has 33 states, 33 states have (on average 2.0) internal successors, (66), 33 states have internal predecessors, (66), 10 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (13), 10 states have call predecessors, (13), 9 states have call successors, (13) [2022-11-20 12:42:58,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:42:58,447 INFO L93 Difference]: Finished difference Result 157 states and 195 transitions. [2022-11-20 12:42:58,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-20 12:42:58,448 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.0) internal successors, (66), 33 states have internal predecessors, (66), 10 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (13), 10 states have call predecessors, (13), 9 states have call successors, (13) Word has length 80 [2022-11-20 12:42:58,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:42:58,449 INFO L225 Difference]: With dead ends: 157 [2022-11-20 12:42:58,449 INFO L226 Difference]: Without dead ends: 144 [2022-11-20 12:42:58,450 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 663 ImplicationChecksByTransitivity, 33.0s TimeCoverageRelationStatistics Valid=684, Invalid=3606, Unknown=0, NotChecked=0, Total=4290 [2022-11-20 12:42:58,451 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 199 mSDsluCounter, 912 mSDsCounter, 0 mSdLazyCounter, 947 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 991 SdHoareTripleChecker+Invalid, 1073 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 947 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:42:58,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 991 Invalid, 1073 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 947 Invalid, 0 Unknown, 0 Unchecked, 12.5s Time] [2022-11-20 12:42:58,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2022-11-20 12:42:58,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 130. [2022-11-20 12:42:58,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 99 states have (on average 1.1616161616161615) internal successors, (115), 103 states have internal predecessors, (115), 19 states have call successors, (19), 7 states have call predecessors, (19), 11 states have return successors, (31), 19 states have call predecessors, (31), 18 states have call successors, (31) [2022-11-20 12:42:58,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 165 transitions. [2022-11-20 12:42:58,495 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 165 transitions. Word has length 80 [2022-11-20 12:42:58,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:42:58,495 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 165 transitions. [2022-11-20 12:42:58,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.0) internal successors, (66), 33 states have internal predecessors, (66), 10 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (13), 10 states have call predecessors, (13), 9 states have call successors, (13) [2022-11-20 12:42:58,496 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 165 transitions. [2022-11-20 12:42:58,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-20 12:42:58,497 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:42:58,497 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:42:58,515 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2022-11-20 12:42:58,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:42:58,710 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:42:58,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:42:58,711 INFO L85 PathProgramCache]: Analyzing trace with hash 416569969, now seen corresponding path program 1 times [2022-11-20 12:42:58,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:42:58,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1449662967] [2022-11-20 12:42:58,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:42:58,711 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:42:58,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:42:58,712 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:42:58,713 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2022-11-20 12:42:58,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:58,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 12:42:58,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:42:59,661 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-20 12:42:59,661 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:43:01,311 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-20 12:43:01,312 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:43:01,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1449662967] [2022-11-20 12:43:01,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1449662967] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:43:01,312 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:43:01,312 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2022-11-20 12:43:01,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303456385] [2022-11-20 12:43:01,312 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:43:01,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 12:43:01,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:43:01,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 12:43:01,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-11-20 12:43:01,314 INFO L87 Difference]: Start difference. First operand 130 states and 165 transitions. Second operand has 15 states, 15 states have (on average 4.333333333333333) internal successors, (65), 15 states have internal predecessors, (65), 8 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 8 states have call predecessors, (10), 7 states have call successors, (10) [2022-11-20 12:43:04,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:43:04,199 INFO L93 Difference]: Finished difference Result 144 states and 179 transitions. [2022-11-20 12:43:04,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 12:43:04,200 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.333333333333333) internal successors, (65), 15 states have internal predecessors, (65), 8 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 8 states have call predecessors, (10), 7 states have call successors, (10) Word has length 81 [2022-11-20 12:43:04,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:43:04,201 INFO L225 Difference]: With dead ends: 144 [2022-11-20 12:43:04,201 INFO L226 Difference]: Without dead ends: 134 [2022-11-20 12:43:04,202 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=102, Invalid=360, Unknown=0, NotChecked=0, Total=462 [2022-11-20 12:43:04,203 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 130 mSDsluCounter, 593 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 678 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-20 12:43:04,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 678 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-20 12:43:04,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2022-11-20 12:43:04,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 119. [2022-11-20 12:43:04,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 90 states have (on average 1.1555555555555554) internal successors, (104), 93 states have internal predecessors, (104), 18 states have call successors, (18), 7 states have call predecessors, (18), 10 states have return successors, (29), 18 states have call predecessors, (29), 17 states have call successors, (29) [2022-11-20 12:43:04,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 151 transitions. [2022-11-20 12:43:04,229 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 151 transitions. Word has length 81 [2022-11-20 12:43:04,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:43:04,230 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 151 transitions. [2022-11-20 12:43:04,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.333333333333333) internal successors, (65), 15 states have internal predecessors, (65), 8 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 8 states have call predecessors, (10), 7 states have call successors, (10) [2022-11-20 12:43:04,230 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 151 transitions. [2022-11-20 12:43:04,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-11-20 12:43:04,231 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:43:04,231 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:43:04,242 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2022-11-20 12:43:04,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:43:04,436 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:43:04,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:43:04,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1958643556, now seen corresponding path program 1 times [2022-11-20 12:43:04,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:43:04,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1033892644] [2022-11-20 12:43:04,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:43:04,437 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:43:04,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:43:04,438 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:43:04,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2022-11-20 12:43:05,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:05,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 44 conjunts are in the unsatisfiable core [2022-11-20 12:43:05,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:43:13,052 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-20 12:43:13,052 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:43:37,746 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-11-20 12:43:37,746 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:43:37,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1033892644] [2022-11-20 12:43:37,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1033892644] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:43:37,747 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:43:37,747 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23] total 45 [2022-11-20 12:43:37,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825692914] [2022-11-20 12:43:37,747 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:43:37,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-11-20 12:43:37,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:43:37,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-11-20 12:43:37,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=1791, Unknown=0, NotChecked=0, Total=1980 [2022-11-20 12:43:37,749 INFO L87 Difference]: Start difference. First operand 119 states and 151 transitions. Second operand has 45 states, 43 states have (on average 1.627906976744186) internal successors, (70), 41 states have internal predecessors, (70), 12 states have call successors, (15), 2 states have call predecessors, (15), 5 states have return successors, (15), 13 states have call predecessors, (15), 11 states have call successors, (15) [2022-11-20 12:43:46,795 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:43:48,073 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:44:22,369 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:44:23,656 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:44:24,939 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:44:26,109 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:44:27,562 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:44:29,079 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:44:36,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:44:36,593 INFO L93 Difference]: Finished difference Result 138 states and 171 transitions. [2022-11-20 12:44:36,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-20 12:44:36,595 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 43 states have (on average 1.627906976744186) internal successors, (70), 41 states have internal predecessors, (70), 12 states have call successors, (15), 2 states have call predecessors, (15), 5 states have return successors, (15), 13 states have call predecessors, (15), 11 states have call successors, (15) Word has length 85 [2022-11-20 12:44:36,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:44:36,599 INFO L225 Difference]: With dead ends: 138 [2022-11-20 12:44:36,599 INFO L226 Difference]: Without dead ends: 129 [2022-11-20 12:44:36,602 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 800 ImplicationChecksByTransitivity, 59.0s TimeCoverageRelationStatistics Valid=553, Invalid=4702, Unknown=1, NotChecked=0, Total=5256 [2022-11-20 12:44:36,603 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 212 mSDsluCounter, 1255 mSDsCounter, 0 mSdLazyCounter, 1256 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 1318 SdHoareTripleChecker+Invalid, 1434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 1256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 77 IncrementalHoareTripleChecker+Unchecked, 24.8s IncrementalHoareTripleChecker+Time [2022-11-20 12:44:36,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 1318 Invalid, 1434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 1256 Invalid, 0 Unknown, 77 Unchecked, 24.8s Time] [2022-11-20 12:44:36,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2022-11-20 12:44:36,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 121. [2022-11-20 12:44:36,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 92 states have (on average 1.1521739130434783) internal successors, (106), 94 states have internal predecessors, (106), 18 states have call successors, (18), 7 states have call predecessors, (18), 10 states have return successors, (27), 19 states have call predecessors, (27), 17 states have call successors, (27) [2022-11-20 12:44:36,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 151 transitions. [2022-11-20 12:44:36,645 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 151 transitions. Word has length 85 [2022-11-20 12:44:36,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:44:36,645 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 151 transitions. [2022-11-20 12:44:36,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 43 states have (on average 1.627906976744186) internal successors, (70), 41 states have internal predecessors, (70), 12 states have call successors, (15), 2 states have call predecessors, (15), 5 states have return successors, (15), 13 states have call predecessors, (15), 11 states have call successors, (15) [2022-11-20 12:44:36,646 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 151 transitions. [2022-11-20 12:44:36,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-20 12:44:36,647 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:44:36,647 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:44:36,661 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2022-11-20 12:44:36,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:44:36,860 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:44:36,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:44:36,861 INFO L85 PathProgramCache]: Analyzing trace with hash -155373131, now seen corresponding path program 2 times [2022-11-20 12:44:36,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:44:36,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1234673188] [2022-11-20 12:44:36,861 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:44:36,861 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:44:36,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:44:36,863 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:44:36,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2022-11-20 12:44:36,945 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:44:36,945 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:44:36,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 12:44:36,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:44:37,822 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-20 12:44:37,822 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:44:39,536 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-20 12:44:39,536 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:44:39,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1234673188] [2022-11-20 12:44:39,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1234673188] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:44:39,536 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:44:39,537 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2022-11-20 12:44:39,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702164165] [2022-11-20 12:44:39,537 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:44:39,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 12:44:39,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:44:39,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 12:44:39,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-11-20 12:44:39,538 INFO L87 Difference]: Start difference. First operand 121 states and 151 transitions. Second operand has 15 states, 15 states have (on average 4.333333333333333) internal successors, (65), 15 states have internal predecessors, (65), 8 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 8 states have call predecessors, (10), 7 states have call successors, (10) [2022-11-20 12:44:42,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:44:42,497 INFO L93 Difference]: Finished difference Result 135 states and 165 transitions. [2022-11-20 12:44:42,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 12:44:42,498 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.333333333333333) internal successors, (65), 15 states have internal predecessors, (65), 8 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 8 states have call predecessors, (10), 7 states have call successors, (10) Word has length 81 [2022-11-20 12:44:42,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:44:42,499 INFO L225 Difference]: With dead ends: 135 [2022-11-20 12:44:42,499 INFO L226 Difference]: Without dead ends: 125 [2022-11-20 12:44:42,499 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2022-11-20 12:44:42,500 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 158 mSDsluCounter, 593 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 678 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-20 12:44:42,500 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 678 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-20 12:44:42,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2022-11-20 12:44:42,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 110. [2022-11-20 12:44:42,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 83 states have (on average 1.144578313253012) internal successors, (95), 84 states have internal predecessors, (95), 17 states have call successors, (17), 7 states have call predecessors, (17), 9 states have return successors, (25), 18 states have call predecessors, (25), 16 states have call successors, (25) [2022-11-20 12:44:42,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 137 transitions. [2022-11-20 12:44:42,545 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 137 transitions. Word has length 81 [2022-11-20 12:44:42,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:44:42,545 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 137 transitions. [2022-11-20 12:44:42,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.333333333333333) internal successors, (65), 15 states have internal predecessors, (65), 8 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 8 states have call predecessors, (10), 7 states have call successors, (10) [2022-11-20 12:44:42,545 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 137 transitions. [2022-11-20 12:44:42,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-11-20 12:44:42,547 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:44:42,547 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:44:42,559 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2022-11-20 12:44:42,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:44:42,754 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:44:42,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:44:42,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1615490404, now seen corresponding path program 2 times [2022-11-20 12:44:42,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:44:42,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1948753286] [2022-11-20 12:44:42,755 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:44:42,755 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:44:42,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:44:42,756 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:44:42,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2022-11-20 12:44:43,562 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:44:43,563 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:44:43,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 44 conjunts are in the unsatisfiable core [2022-11-20 12:44:43,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:44:51,655 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-20 12:44:51,655 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:45:17,958 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-11-20 12:45:17,958 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:45:17,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1948753286] [2022-11-20 12:45:17,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1948753286] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:45:17,959 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:45:17,959 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23] total 45 [2022-11-20 12:45:17,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499009964] [2022-11-20 12:45:17,959 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:45:17,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-11-20 12:45:17,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:45:17,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-11-20 12:45:17,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=1798, Unknown=0, NotChecked=0, Total=1980 [2022-11-20 12:45:17,961 INFO L87 Difference]: Start difference. First operand 110 states and 137 transitions. Second operand has 45 states, 43 states have (on average 1.627906976744186) internal successors, (70), 41 states have internal predecessors, (70), 12 states have call successors, (15), 2 states have call predecessors, (15), 5 states have return successors, (15), 13 states have call predecessors, (15), 11 states have call successors, (15) [2022-11-20 12:45:39,272 WARN L233 SmtUtils]: Spent 5.67s on a formula simplification. DAG size of input: 80 DAG size of output: 76 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:45:54,237 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:45:55,691 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:45:57,544 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:46:11,526 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:46:30,441 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:46:33,286 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:46:34,944 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:46:36,499 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:46:43,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:46:43,036 INFO L93 Difference]: Finished difference Result 128 states and 156 transitions. [2022-11-20 12:46:43,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-20 12:46:43,038 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 43 states have (on average 1.627906976744186) internal successors, (70), 41 states have internal predecessors, (70), 12 states have call successors, (15), 2 states have call predecessors, (15), 5 states have return successors, (15), 13 states have call predecessors, (15), 11 states have call successors, (15) Word has length 85 [2022-11-20 12:46:43,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:46:43,038 INFO L225 Difference]: With dead ends: 128 [2022-11-20 12:46:43,039 INFO L226 Difference]: Without dead ends: 116 [2022-11-20 12:46:43,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 938 ImplicationChecksByTransitivity, 79.2s TimeCoverageRelationStatistics Valid=625, Invalid=5381, Unknown=0, NotChecked=0, Total=6006 [2022-11-20 12:46:43,040 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 202 mSDsluCounter, 1330 mSDsCounter, 0 mSdLazyCounter, 1521 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 1395 SdHoareTripleChecker+Invalid, 1776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 1521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 138 IncrementalHoareTripleChecker+Unchecked, 32.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:46:43,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 1395 Invalid, 1776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 1521 Invalid, 0 Unknown, 138 Unchecked, 32.5s Time] [2022-11-20 12:46:43,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2022-11-20 12:46:43,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 108. [2022-11-20 12:46:43,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 81 states have (on average 1.1358024691358024) internal successors, (92), 83 states have internal predecessors, (92), 17 states have call successors, (17), 7 states have call predecessors, (17), 9 states have return successors, (23), 17 states have call predecessors, (23), 16 states have call successors, (23) [2022-11-20 12:46:43,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 132 transitions. [2022-11-20 12:46:43,090 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 132 transitions. Word has length 85 [2022-11-20 12:46:43,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:46:43,104 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 132 transitions. [2022-11-20 12:46:43,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 43 states have (on average 1.627906976744186) internal successors, (70), 41 states have internal predecessors, (70), 12 states have call successors, (15), 2 states have call predecessors, (15), 5 states have return successors, (15), 13 states have call predecessors, (15), 11 states have call successors, (15) [2022-11-20 12:46:43,105 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 132 transitions. [2022-11-20 12:46:43,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-20 12:46:43,106 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:46:43,106 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:46:43,127 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2022-11-20 12:46:43,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:46:43,323 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:46:43,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:46:43,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1612746217, now seen corresponding path program 1 times [2022-11-20 12:46:43,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:46:43,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [947325100] [2022-11-20 12:46:43,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:46:43,324 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:46:43,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:46:43,325 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:46:43,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2022-11-20 12:46:43,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:46:43,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-20 12:46:43,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:46:47,375 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-20 12:46:47,375 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:46:56,358 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 8 proven. 13 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-11-20 12:46:56,358 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:46:56,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [947325100] [2022-11-20 12:46:56,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [947325100] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:46:56,358 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:46:56,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16] total 30 [2022-11-20 12:46:56,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493954580] [2022-11-20 12:46:56,359 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:46:56,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-20 12:46:56,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:46:56,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-20 12:46:56,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=756, Unknown=0, NotChecked=0, Total=870 [2022-11-20 12:46:56,360 INFO L87 Difference]: Start difference. First operand 108 states and 132 transitions. Second operand has 30 states, 30 states have (on average 2.2) internal successors, (66), 30 states have internal predecessors, (66), 11 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (14), 11 states have call predecessors, (14), 10 states have call successors, (14) [2022-11-20 12:47:14,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:47:14,165 INFO L93 Difference]: Finished difference Result 135 states and 162 transitions. [2022-11-20 12:47:14,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-20 12:47:14,167 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.2) internal successors, (66), 30 states have internal predecessors, (66), 11 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (14), 11 states have call predecessors, (14), 10 states have call successors, (14) Word has length 86 [2022-11-20 12:47:14,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:47:14,168 INFO L225 Difference]: With dead ends: 135 [2022-11-20 12:47:14,168 INFO L226 Difference]: Without dead ends: 91 [2022-11-20 12:47:14,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 17.3s TimeCoverageRelationStatistics Valid=461, Invalid=2401, Unknown=0, NotChecked=0, Total=2862 [2022-11-20 12:47:14,169 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 129 mSDsluCounter, 857 mSDsCounter, 0 mSdLazyCounter, 757 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 929 SdHoareTripleChecker+Invalid, 850 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 757 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:47:14,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 929 Invalid, 850 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 757 Invalid, 0 Unknown, 0 Unchecked, 9.0s Time] [2022-11-20 12:47:14,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2022-11-20 12:47:14,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 86. [2022-11-20 12:47:14,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 65 states have (on average 1.1384615384615384) internal successors, (74), 66 states have internal predecessors, (74), 13 states have call successors, (13), 6 states have call predecessors, (13), 7 states have return successors, (17), 13 states have call predecessors, (17), 12 states have call successors, (17) [2022-11-20 12:47:14,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 104 transitions. [2022-11-20 12:47:14,200 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 104 transitions. Word has length 86 [2022-11-20 12:47:14,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:47:14,200 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 104 transitions. [2022-11-20 12:47:14,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.2) internal successors, (66), 30 states have internal predecessors, (66), 11 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (14), 11 states have call predecessors, (14), 10 states have call successors, (14) [2022-11-20 12:47:14,201 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 104 transitions. [2022-11-20 12:47:14,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-20 12:47:14,202 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:47:14,202 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:47:14,224 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (43)] Forceful destruction successful, exit code 0 [2022-11-20 12:47:14,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:47:14,418 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:47:14,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:47:14,419 INFO L85 PathProgramCache]: Analyzing trace with hash 435066903, now seen corresponding path program 2 times [2022-11-20 12:47:14,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:47:14,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1338663365] [2022-11-20 12:47:14,419 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:47:14,419 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:47:14,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:47:14,420 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:47:14,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512485d2-23bf-4e3c-995c-378edd8c23be/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2022-11-20 12:47:14,657 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:47:14,657 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:47:14,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-20 12:47:14,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:47:18,384 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-20 12:47:18,384 INFO L328 TraceCheckSpWp]: Computing backward predicates...