./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/square_8+soft_float_1-3a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af70f53-0d54-41d4-8a24-4b9c641287c5/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af70f53-0d54-41d4-8a24-4b9c641287c5/bin/utaipan-6cKwYrpEi9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af70f53-0d54-41d4-8a24-4b9c641287c5/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af70f53-0d54-41d4-8a24-4b9c641287c5/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/square_8+soft_float_1-3a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af70f53-0d54-41d4-8a24-4b9c641287c5/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af70f53-0d54-41d4-8a24-4b9c641287c5/bin/utaipan-6cKwYrpEi9 --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 13801fa2c96f7c93ace2086dcc65f456b83ac056f84901412492a5919d95dd03 --- 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 21:29:46,454 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 21:29:46,456 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 21:29:46,494 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 21:29:46,494 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 21:29:46,495 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 21:29:46,497 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 21:29:46,498 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 21:29:46,504 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 21:29:46,510 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 21:29:46,511 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 21:29:46,514 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 21:29:46,515 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 21:29:46,516 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 21:29:46,517 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 21:29:46,518 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 21:29:46,519 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 21:29:46,520 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 21:29:46,521 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 21:29:46,523 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 21:29:46,524 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 21:29:46,530 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 21:29:46,533 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 21:29:46,534 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 21:29:46,545 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 21:29:46,546 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 21:29:46,546 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 21:29:46,547 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 21:29:46,547 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 21:29:46,548 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 21:29:46,549 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 21:29:46,549 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 21:29:46,550 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 21:29:46,551 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 21:29:46,552 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 21:29:46,552 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 21:29:46,553 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 21:29:46,553 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 21:29:46,557 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 21:29:46,558 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 21:29:46,559 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 21:29:46,560 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af70f53-0d54-41d4-8a24-4b9c641287c5/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-20 21:29:46,599 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 21:29:46,599 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 21:29:46,600 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 21:29:46,600 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 21:29:46,601 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 21:29:46,601 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 21:29:46,601 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 21:29:46,602 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 21:29:46,602 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 21:29:46,602 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-20 21:29:46,603 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 21:29:46,604 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 21:29:46,604 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-20 21:29:46,604 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-20 21:29:46,604 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 21:29:46,605 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-20 21:29:46,605 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-20 21:29:46,605 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-20 21:29:46,606 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 21:29:46,607 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 21:29:46,607 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 21:29:46,607 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 21:29:46,607 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 21:29:46,607 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 21:29:46,608 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 21:29:46,608 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 21:29:46,608 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 21:29:46,608 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 21:29:46,608 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 21:29:46,609 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 21:29:46,609 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 21:29:46,609 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 21:29:46,609 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 21:29:46,610 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 21:29:46,610 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-20 21:29:46,610 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 21:29:46,610 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 21:29:46,610 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-20 21:29:46,611 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 21:29:46,611 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 21:29:46,611 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 21:29:46,611 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_9af70f53-0d54-41d4-8a24-4b9c641287c5/bin/utaipan-6cKwYrpEi9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af70f53-0d54-41d4-8a24-4b9c641287c5/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 13801fa2c96f7c93ace2086dcc65f456b83ac056f84901412492a5919d95dd03 [2022-11-20 21:29:46,897 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 21:29:46,924 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 21:29:46,927 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 21:29:46,928 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 21:29:46,928 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 21:29:46,930 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af70f53-0d54-41d4-8a24-4b9c641287c5/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/combinations/square_8+soft_float_1-3a.c.cil.c [2022-11-20 21:29:49,877 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 21:29:50,176 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 21:29:50,177 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af70f53-0d54-41d4-8a24-4b9c641287c5/sv-benchmarks/c/combinations/square_8+soft_float_1-3a.c.cil.c [2022-11-20 21:29:50,189 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af70f53-0d54-41d4-8a24-4b9c641287c5/bin/utaipan-6cKwYrpEi9/data/798ed9447/802e1dbd1a274b44babb4d218e2aee16/FLAGd32f8206f [2022-11-20 21:29:50,209 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af70f53-0d54-41d4-8a24-4b9c641287c5/bin/utaipan-6cKwYrpEi9/data/798ed9447/802e1dbd1a274b44babb4d218e2aee16 [2022-11-20 21:29:50,212 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 21:29:50,215 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 21:29:50,219 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 21:29:50,219 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 21:29:50,223 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 21:29:50,223 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:29:50" (1/1) ... [2022-11-20 21:29:50,225 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@85e605d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:29:50, skipping insertion in model container [2022-11-20 21:29:50,226 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:29:50" (1/1) ... [2022-11-20 21:29:50,233 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 21:29:50,260 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 21:29:50,410 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_9af70f53-0d54-41d4-8a24-4b9c641287c5/sv-benchmarks/c/combinations/square_8+soft_float_1-3a.c.cil.c[1995,2008] [2022-11-20 21:29:50,416 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_9af70f53-0d54-41d4-8a24-4b9c641287c5/sv-benchmarks/c/combinations/square_8+soft_float_1-3a.c.cil.c[2364,2377] [2022-11-20 21:29:50,434 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 21:29:50,439 INFO L158 Benchmark]: Toolchain (without parser) took 223.39ms. Allocated memory is still 174.1MB. Free memory was 144.6MB in the beginning and 134.7MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-20 21:29:50,440 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 125.8MB. Free memory is still 86.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 21:29:50,440 INFO L158 Benchmark]: CACSL2BoogieTranslator took 218.85ms. Allocated memory is still 174.1MB. Free memory was 144.3MB in the beginning and 134.7MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-20 21:29:50,442 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 125.8MB. Free memory is still 86.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 218.85ms. Allocated memory is still 174.1MB. Free memory was 144.3MB in the beginning and 134.7MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: NullPointerException: null: de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.TypeSizes.extractIntegerValue(TypeSizes.java:384) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af70f53-0d54-41d4-8a24-4b9c641287c5/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af70f53-0d54-41d4-8a24-4b9c641287c5/bin/utaipan-6cKwYrpEi9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af70f53-0d54-41d4-8a24-4b9c641287c5/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af70f53-0d54-41d4-8a24-4b9c641287c5/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/square_8+soft_float_1-3a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af70f53-0d54-41d4-8a24-4b9c641287c5/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af70f53-0d54-41d4-8a24-4b9c641287c5/bin/utaipan-6cKwYrpEi9 --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 13801fa2c96f7c93ace2086dcc65f456b83ac056f84901412492a5919d95dd03 --- 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 21:29:52,693 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 21:29:52,696 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 21:29:52,741 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 21:29:52,743 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 21:29:52,746 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 21:29:52,751 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 21:29:52,754 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 21:29:52,756 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 21:29:52,762 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 21:29:52,763 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 21:29:52,765 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 21:29:52,766 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 21:29:52,768 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 21:29:52,771 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 21:29:52,777 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 21:29:52,778 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 21:29:52,779 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 21:29:52,781 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 21:29:52,784 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 21:29:52,788 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 21:29:52,790 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 21:29:52,792 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 21:29:52,793 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 21:29:52,799 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 21:29:52,803 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 21:29:52,804 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 21:29:52,805 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 21:29:52,806 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 21:29:52,807 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 21:29:52,808 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 21:29:52,809 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 21:29:52,810 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 21:29:52,812 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 21:29:52,812 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 21:29:52,813 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 21:29:52,813 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 21:29:52,814 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 21:29:52,814 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 21:29:52,815 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 21:29:52,815 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 21:29:52,821 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af70f53-0d54-41d4-8a24-4b9c641287c5/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-11-20 21:29:52,859 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 21:29:52,860 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 21:29:52,861 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 21:29:52,861 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 21:29:52,862 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 21:29:52,862 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 21:29:52,863 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 21:29:52,863 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 21:29:52,863 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 21:29:52,863 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 21:29:52,864 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 21:29:52,865 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 21:29:52,865 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 21:29:52,866 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 21:29:52,866 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 21:29:52,866 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 21:29:52,866 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 21:29:52,867 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 21:29:52,867 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 21:29:52,867 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 21:29:52,867 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-20 21:29:52,867 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-20 21:29:52,868 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 21:29:52,868 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 21:29:52,868 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 21:29:52,868 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 21:29:52,869 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 21:29:52,869 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 21:29:52,869 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 21:29:52,869 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 21:29:52,869 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 21:29:52,870 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 21:29:52,870 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 21:29:52,870 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-20 21:29:52,871 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-20 21:29:52,871 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 21:29:52,871 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 21:29:52,871 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-20 21:29:52,871 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_9af70f53-0d54-41d4-8a24-4b9c641287c5/bin/utaipan-6cKwYrpEi9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af70f53-0d54-41d4-8a24-4b9c641287c5/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 13801fa2c96f7c93ace2086dcc65f456b83ac056f84901412492a5919d95dd03 [2022-11-20 21:29:53,261 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 21:29:53,287 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 21:29:53,292 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 21:29:53,294 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 21:29:53,295 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 21:29:53,296 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af70f53-0d54-41d4-8a24-4b9c641287c5/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/combinations/square_8+soft_float_1-3a.c.cil.c [2022-11-20 21:29:56,404 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 21:29:56,692 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 21:29:56,694 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af70f53-0d54-41d4-8a24-4b9c641287c5/sv-benchmarks/c/combinations/square_8+soft_float_1-3a.c.cil.c [2022-11-20 21:29:56,703 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af70f53-0d54-41d4-8a24-4b9c641287c5/bin/utaipan-6cKwYrpEi9/data/e2a548c3b/0fd213c4e3794ecb902a62268ceb0936/FLAG1879d5adb [2022-11-20 21:29:56,715 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af70f53-0d54-41d4-8a24-4b9c641287c5/bin/utaipan-6cKwYrpEi9/data/e2a548c3b/0fd213c4e3794ecb902a62268ceb0936 [2022-11-20 21:29:56,717 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 21:29:56,718 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 21:29:56,719 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 21:29:56,720 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 21:29:56,723 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 21:29:56,724 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:29:56" (1/1) ... [2022-11-20 21:29:56,725 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@399c3d31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:29:56, skipping insertion in model container [2022-11-20 21:29:56,725 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:29:56" (1/1) ... [2022-11-20 21:29:56,732 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 21:29:56,762 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 21:29:56,924 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_9af70f53-0d54-41d4-8a24-4b9c641287c5/sv-benchmarks/c/combinations/square_8+soft_float_1-3a.c.cil.c[1995,2008] [2022-11-20 21:29:56,930 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_9af70f53-0d54-41d4-8a24-4b9c641287c5/sv-benchmarks/c/combinations/square_8+soft_float_1-3a.c.cil.c[2364,2377] [2022-11-20 21:29:56,974 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 21:29:56,993 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 21:29:57,023 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_9af70f53-0d54-41d4-8a24-4b9c641287c5/sv-benchmarks/c/combinations/square_8+soft_float_1-3a.c.cil.c[1995,2008] [2022-11-20 21:29:57,030 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_9af70f53-0d54-41d4-8a24-4b9c641287c5/sv-benchmarks/c/combinations/square_8+soft_float_1-3a.c.cil.c[2364,2377] [2022-11-20 21:29:57,083 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 21:29:57,098 INFO L208 MainTranslator]: Completed translation [2022-11-20 21:29:57,098 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:29:57 WrapperNode [2022-11-20 21:29:57,099 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 21:29:57,100 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 21:29:57,100 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 21:29:57,100 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 21:29:57,108 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:29:57" (1/1) ... [2022-11-20 21:29:57,120 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:29:57" (1/1) ... [2022-11-20 21:29:57,143 INFO L138 Inliner]: procedures = 28, calls = 21, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 164 [2022-11-20 21:29:57,144 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 21:29:57,145 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 21:29:57,145 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 21:29:57,145 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 21:29:57,155 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:29:57" (1/1) ... [2022-11-20 21:29:57,155 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:29:57" (1/1) ... [2022-11-20 21:29:57,159 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:29:57" (1/1) ... [2022-11-20 21:29:57,160 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:29:57" (1/1) ... [2022-11-20 21:29:57,168 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:29:57" (1/1) ... [2022-11-20 21:29:57,173 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:29:57" (1/1) ... [2022-11-20 21:29:57,175 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:29:57" (1/1) ... [2022-11-20 21:29:57,177 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:29:57" (1/1) ... [2022-11-20 21:29:57,180 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 21:29:57,181 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 21:29:57,182 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 21:29:57,182 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 21:29:57,183 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:29:57" (1/1) ... [2022-11-20 21:29:57,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 21:29:57,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af70f53-0d54-41d4-8a24-4b9c641287c5/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 21:29:57,213 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af70f53-0d54-41d4-8a24-4b9c641287c5/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 21:29:57,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af70f53-0d54-41d4-8a24-4b9c641287c5/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 21:29:57,267 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 21:29:57,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-20 21:29:57,268 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2022-11-20 21:29:57,268 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2022-11-20 21:29:57,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 21:29:57,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 21:29:57,269 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-20 21:29:57,269 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-20 21:29:57,387 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 21:29:57,390 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 21:30:00,013 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 21:30:00,020 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 21:30:00,021 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-20 21:30:00,023 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:30:00 BoogieIcfgContainer [2022-11-20 21:30:00,023 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 21:30:00,025 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 21:30:00,025 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 21:30:00,045 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 21:30:00,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:29:56" (1/3) ... [2022-11-20 21:30:00,046 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b3d082b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:30:00, skipping insertion in model container [2022-11-20 21:30:00,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:29:57" (2/3) ... [2022-11-20 21:30:00,047 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b3d082b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:30:00, skipping insertion in model container [2022-11-20 21:30:00,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:30:00" (3/3) ... [2022-11-20 21:30:00,051 INFO L112 eAbstractionObserver]: Analyzing ICFG square_8+soft_float_1-3a.c.cil.c [2022-11-20 21:30:00,070 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 21:30:00,070 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-20 21:30:00,136 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 21:30:00,142 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=FINITE_AUTOMATA, 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;@38fbbc9c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 21:30:00,143 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-20 21:30:00,147 INFO L276 IsEmpty]: Start isEmpty. Operand has 81 states, 67 states have (on average 1.5820895522388059) internal successors, (106), 71 states have internal predecessors, (106), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-20 21:30:00,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-20 21:30:00,155 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:30:00,155 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:30:00,156 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:30:00,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:30:00,162 INFO L85 PathProgramCache]: Analyzing trace with hash -548115930, now seen corresponding path program 1 times [2022-11-20 21:30:00,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 21:30:00,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [641922691] [2022-11-20 21:30:00,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:30:00,176 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 21:30:00,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af70f53-0d54-41d4-8a24-4b9c641287c5/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 21:30:00,182 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af70f53-0d54-41d4-8a24-4b9c641287c5/bin/utaipan-6cKwYrpEi9/mathsat -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 21:30:00,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af70f53-0d54-41d4-8a24-4b9c641287c5/bin/utaipan-6cKwYrpEi9/mathsat -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 21:30:00,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:30:00,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-20 21:30:00,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:30:00,735 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 21:30:00,735 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 21:30:00,736 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 21:30:00,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [641922691] [2022-11-20 21:30:00,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [641922691] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:30:00,737 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:30:00,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 21:30:00,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594684764] [2022-11-20 21:30:00,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:30:00,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 21:30:00,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 21:30:00,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 21:30:00,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 21:30:00,775 INFO L87 Difference]: Start difference. First operand has 81 states, 67 states have (on average 1.5820895522388059) internal successors, (106), 71 states have internal predecessors, (106), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) 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 21:30:00,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:30:00,815 INFO L93 Difference]: Finished difference Result 157 states and 249 transitions. [2022-11-20 21:30:00,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 21:30:00,817 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 21:30:00,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:30:00,826 INFO L225 Difference]: With dead ends: 157 [2022-11-20 21:30:00,826 INFO L226 Difference]: Without dead ends: 74 [2022-11-20 21:30:00,830 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 21:30:00,833 INFO L413 NwaCegarLoop]: 117 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, 117 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 21:30:00,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 21:30:00,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-11-20 21:30:00,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2022-11-20 21:30:00,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 61 states have (on average 1.4918032786885247) internal successors, (91), 64 states have internal predecessors, (91), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-20 21:30:00,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 108 transitions. [2022-11-20 21:30:00,906 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 108 transitions. Word has length 7 [2022-11-20 21:30:00,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:30:00,906 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 108 transitions. [2022-11-20 21:30:00,907 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 21:30:00,908 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 108 transitions. [2022-11-20 21:30:00,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-20 21:30:00,909 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:30:00,909 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:30:00,936 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af70f53-0d54-41d4-8a24-4b9c641287c5/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-20 21:30:01,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af70f53-0d54-41d4-8a24-4b9c641287c5/bin/utaipan-6cKwYrpEi9/mathsat -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 21:30:01,123 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:30:01,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:30:01,123 INFO L85 PathProgramCache]: Analyzing trace with hash -548056348, now seen corresponding path program 1 times [2022-11-20 21:30:01,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 21:30:01,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [834286555] [2022-11-20 21:30:01,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:30:01,125 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 21:30:01,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af70f53-0d54-41d4-8a24-4b9c641287c5/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 21:30:01,126 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af70f53-0d54-41d4-8a24-4b9c641287c5/bin/utaipan-6cKwYrpEi9/mathsat -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 21:30:01,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af70f53-0d54-41d4-8a24-4b9c641287c5/bin/utaipan-6cKwYrpEi9/mathsat -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 21:31:16,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:31:16,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 21:31:16,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:31:51,269 WARN L233 SmtUtils]: Spent 10.55s on a formula simplification that was a NOOP. DAG size: 36 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:32:25,190 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 21:32:27,240 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 21:32:27,241 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 21:32:27,241 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 21:32:27,242 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 21:32:27,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [834286555] [2022-11-20 21:32:27,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [834286555] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:32:27,242 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:32:27,243 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 21:32:27,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846557159] [2022-11-20 21:32:27,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:32:27,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 21:32:27,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 21:32:27,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 21:32:27,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=13, Unknown=7, NotChecked=8, Total=42 [2022-11-20 21:32:27,247 INFO L87 Difference]: Start difference. First operand 74 states and 108 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 21:32:33,988 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 21:32:34,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:32:34,434 INFO L93 Difference]: Finished difference Result 74 states and 108 transitions. [2022-11-20 21:32:34,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 21:32:34,436 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 21:32:34,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:32:34,437 INFO L225 Difference]: With dead ends: 74 [2022-11-20 21:32:34,437 INFO L226 Difference]: Without dead ends: 69 [2022-11-20 21:32:34,438 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 30.6s TimeCoverageRelationStatistics Valid=19, Invalid=18, Unknown=9, NotChecked=10, Total=56 [2022-11-20 21:32:34,439 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 104 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 211 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-20 21:32:34,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 273 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 1 Unknown, 211 Unchecked, 2.8s Time] [2022-11-20 21:32:34,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-11-20 21:32:34,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2022-11-20 21:32:34,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 57 states have (on average 1.5087719298245614) internal successors, (86), 59 states have internal predecessors, (86), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-20 21:32:34,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 103 transitions. [2022-11-20 21:32:34,451 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 103 transitions. Word has length 7 [2022-11-20 21:32:34,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:32:34,452 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 103 transitions. [2022-11-20 21:32:34,452 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 21:32:34,452 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 103 transitions. [2022-11-20 21:32:34,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-20 21:32:34,454 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:32:34,454 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, 1] [2022-11-20 21:32:34,481 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af70f53-0d54-41d4-8a24-4b9c641287c5/bin/utaipan-6cKwYrpEi9/mathsat -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 21:32:34,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af70f53-0d54-41d4-8a24-4b9c641287c5/bin/utaipan-6cKwYrpEi9/mathsat -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 21:32:34,667 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:32:34,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:32:34,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1413922597, now seen corresponding path program 1 times [2022-11-20 21:32:34,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 21:32:34,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [429241704] [2022-11-20 21:32:34,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:32:34,669 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 21:32:34,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af70f53-0d54-41d4-8a24-4b9c641287c5/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 21:32:34,670 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af70f53-0d54-41d4-8a24-4b9c641287c5/bin/utaipan-6cKwYrpEi9/mathsat -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 21:32:34,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af70f53-0d54-41d4-8a24-4b9c641287c5/bin/utaipan-6cKwYrpEi9/mathsat -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 21:32:34,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:32:34,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 21:32:34,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:32:35,160 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-20 21:32:35,161 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 21:32:35,552 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-20 21:32:35,553 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 21:32:35,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [429241704] [2022-11-20 21:32:35,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [429241704] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 21:32:35,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [840601744] [2022-11-20 21:32:35,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:32:35,554 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 21:32:35,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af70f53-0d54-41d4-8a24-4b9c641287c5/bin/utaipan-6cKwYrpEi9/cvc4 [2022-11-20 21:32:35,563 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af70f53-0d54-41d4-8a24-4b9c641287c5/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 21:32:35,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af70f53-0d54-41d4-8a24-4b9c641287c5/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2022-11-20 21:32:35,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:32:35,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 21:32:35,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:32:36,292 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 21:32:36,292 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 21:32:36,646 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 21:32:36,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [840601744] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 21:32:36,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1756692301] [2022-11-20 21:32:36,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:32:36,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:32:36,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af70f53-0d54-41d4-8a24-4b9c641287c5/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 21:32:36,652 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af70f53-0d54-41d4-8a24-4b9c641287c5/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 21:32:36,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af70f53-0d54-41d4-8a24-4b9c641287c5/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 21:32:36,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:32:36,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 21:32:36,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:32:36,924 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 21:32:36,924 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 21:32:37,269 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 21:32:37,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1756692301] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 21:32:37,270 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-20 21:32:37,270 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 8, 8, 8, 8] total 10 [2022-11-20 21:32:37,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261958039] [2022-11-20 21:32:37,271 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-20 21:32:37,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 21:32:37,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 21:32:37,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 21:32:37,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-20 21:32:37,273 INFO L87 Difference]: Start difference. First operand 69 states and 103 transitions. Second operand has 10 states, 10 states have (on average 2.9) internal successors, (29), 8 states have internal predecessors, (29), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-20 21:32:40,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:32:40,850 INFO L93 Difference]: Finished difference Result 325 states and 523 transitions. [2022-11-20 21:32:40,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 21:32:40,851 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.9) internal successors, (29), 8 states have internal predecessors, (29), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) Word has length 33 [2022-11-20 21:32:40,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:32:40,863 INFO L225 Difference]: With dead ends: 325 [2022-11-20 21:32:40,863 INFO L226 Difference]: Without dead ends: 280 [2022-11-20 21:32:40,866 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2022-11-20 21:32:40,869 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 271 mSDsluCounter, 1299 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 1497 SdHoareTripleChecker+Invalid, 388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-20 21:32:40,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [278 Valid, 1497 Invalid, 388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 350 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-20 21:32:40,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2022-11-20 21:32:40,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 113. [2022-11-20 21:32:40,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 94 states have (on average 1.425531914893617) internal successors, (134), 95 states have internal predecessors, (134), 15 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (21), 17 states have call predecessors, (21), 14 states have call successors, (21) [2022-11-20 21:32:40,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 170 transitions. [2022-11-20 21:32:40,906 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 170 transitions. Word has length 33 [2022-11-20 21:32:40,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:32:40,907 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 170 transitions. [2022-11-20 21:32:40,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.9) internal successors, (29), 8 states have internal predecessors, (29), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-20 21:32:40,908 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 170 transitions. [2022-11-20 21:32:40,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-20 21:32:40,910 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:32:40,911 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, 1, 1, 1, 1, 1] [2022-11-20 21:32:40,927 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af70f53-0d54-41d4-8a24-4b9c641287c5/bin/utaipan-6cKwYrpEi9/mathsat -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 21:32:41,138 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af70f53-0d54-41d4-8a24-4b9c641287c5/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2022-11-20 21:32:41,340 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af70f53-0d54-41d4-8a24-4b9c641287c5/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 21:32:41,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af70f53-0d54-41d4-8a24-4b9c641287c5/bin/utaipan-6cKwYrpEi9/mathsat -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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af70f53-0d54-41d4-8a24-4b9c641287c5/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af70f53-0d54-41d4-8a24-4b9c641287c5/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:32:41,536 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:32:41,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:32:41,536 INFO L85 PathProgramCache]: Analyzing trace with hash -458870352, now seen corresponding path program 1 times [2022-11-20 21:32:41,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 21:32:41,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1966182611] [2022-11-20 21:32:41,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:32:41,537 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 21:32:41,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af70f53-0d54-41d4-8a24-4b9c641287c5/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 21:32:41,539 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af70f53-0d54-41d4-8a24-4b9c641287c5/bin/utaipan-6cKwYrpEi9/mathsat -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 21:32:41,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af70f53-0d54-41d4-8a24-4b9c641287c5/bin/utaipan-6cKwYrpEi9/mathsat -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 21:32:41,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:32:41,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 21:32:41,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:32:41,949 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 21:32:41,949 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 21:32:41,949 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 21:32:41,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1966182611] [2022-11-20 21:32:41,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1966182611] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:32:41,950 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:32:41,950 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 21:32:41,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732433008] [2022-11-20 21:32:41,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:32:41,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 21:32:41,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 21:32:41,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 21:32:41,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 21:32:41,952 INFO L87 Difference]: Start difference. First operand 113 states and 170 transitions. Second operand has 6 states, 6 states have (on average 5.0) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-20 21:32:42,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:32:42,570 INFO L93 Difference]: Finished difference Result 249 states and 377 transitions. [2022-11-20 21:32:42,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 21:32:42,572 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 41 [2022-11-20 21:32:42,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:32:42,574 INFO L225 Difference]: With dead ends: 249 [2022-11-20 21:32:42,574 INFO L226 Difference]: Without dead ends: 188 [2022-11-20 21:32:42,575 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 21:32:42,580 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 52 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 21:32:42,583 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 462 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 21:32:42,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2022-11-20 21:32:42,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 184. [2022-11-20 21:32:42,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 158 states have (on average 1.4177215189873418) internal successors, (224), 157 states have internal predecessors, (224), 22 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (28), 28 states have call predecessors, (28), 21 states have call successors, (28) [2022-11-20 21:32:42,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 274 transitions. [2022-11-20 21:32:42,644 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 274 transitions. Word has length 41 [2022-11-20 21:32:42,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:32:42,649 INFO L495 AbstractCegarLoop]: Abstraction has 184 states and 274 transitions. [2022-11-20 21:32:42,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-20 21:32:42,650 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 274 transitions. [2022-11-20 21:32:42,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-20 21:32:42,652 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:32:42,652 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, 1, 1, 1, 1, 1] [2022-11-20 21:32:42,671 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af70f53-0d54-41d4-8a24-4b9c641287c5/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-20 21:32:42,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af70f53-0d54-41d4-8a24-4b9c641287c5/bin/utaipan-6cKwYrpEi9/mathsat -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 21:32:42,853 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:32:42,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:32:42,854 INFO L85 PathProgramCache]: Analyzing trace with hash 221188018, now seen corresponding path program 1 times [2022-11-20 21:32:42,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 21:32:42,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1684061366] [2022-11-20 21:32:42,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:32:42,855 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 21:32:42,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af70f53-0d54-41d4-8a24-4b9c641287c5/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 21:32:42,856 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af70f53-0d54-41d4-8a24-4b9c641287c5/bin/utaipan-6cKwYrpEi9/mathsat -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 21:32:42,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af70f53-0d54-41d4-8a24-4b9c641287c5/bin/utaipan-6cKwYrpEi9/mathsat -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 21:32:42,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:32:42,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 21:32:42,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:32:43,377 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 21:32:43,377 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 21:32:43,377 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 21:32:43,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1684061366] [2022-11-20 21:32:43,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1684061366] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:32:43,378 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:32:43,378 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 21:32:43,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388082000] [2022-11-20 21:32:43,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:32:43,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 21:32:43,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 21:32:43,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 21:32:43,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 21:32:43,380 INFO L87 Difference]: Start difference. First operand 184 states and 274 transitions. Second operand has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-20 21:32:44,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:32:44,252 INFO L93 Difference]: Finished difference Result 257 states and 384 transitions. [2022-11-20 21:32:44,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 21:32:44,253 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 41 [2022-11-20 21:32:44,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:32:44,255 INFO L225 Difference]: With dead ends: 257 [2022-11-20 21:32:44,255 INFO L226 Difference]: Without dead ends: 202 [2022-11-20 21:32:44,256 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-20 21:32:44,257 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 105 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 21:32:44,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 545 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-20 21:32:44,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2022-11-20 21:32:44,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 175. [2022-11-20 21:32:44,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 152 states have (on average 1.394736842105263) internal successors, (212), 151 states have internal predecessors, (212), 19 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (25), 25 states have call predecessors, (25), 18 states have call successors, (25) [2022-11-20 21:32:44,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 256 transitions. [2022-11-20 21:32:44,278 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 256 transitions. Word has length 41 [2022-11-20 21:32:44,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:32:44,279 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 256 transitions. [2022-11-20 21:32:44,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-20 21:32:44,279 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 256 transitions. [2022-11-20 21:32:44,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-20 21:32:44,281 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:32:44,281 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:32:44,300 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af70f53-0d54-41d4-8a24-4b9c641287c5/bin/utaipan-6cKwYrpEi9/mathsat -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 21:32:44,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af70f53-0d54-41d4-8a24-4b9c641287c5/bin/utaipan-6cKwYrpEi9/mathsat -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 21:32:44,500 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:32:44,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:32:44,501 INFO L85 PathProgramCache]: Analyzing trace with hash 64679693, now seen corresponding path program 1 times [2022-11-20 21:32:44,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 21:32:44,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1557066241] [2022-11-20 21:32:44,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:32:44,501 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 21:32:44,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af70f53-0d54-41d4-8a24-4b9c641287c5/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 21:32:44,502 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af70f53-0d54-41d4-8a24-4b9c641287c5/bin/utaipan-6cKwYrpEi9/mathsat -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 21:32:44,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af70f53-0d54-41d4-8a24-4b9c641287c5/bin/utaipan-6cKwYrpEi9/mathsat -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 21:32:44,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:32:44,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 21:32:44,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:32:44,756 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-20 21:32:44,756 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 21:32:44,756 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 21:32:44,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1557066241] [2022-11-20 21:32:44,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1557066241] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:32:44,757 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:32:44,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 21:32:44,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099192641] [2022-11-20 21:32:44,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:32:44,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 21:32:44,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 21:32:44,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 21:32:44,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 21:32:44,759 INFO L87 Difference]: Start difference. First operand 175 states and 256 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-20 21:32:44,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:32:44,934 INFO L93 Difference]: Finished difference Result 322 states and 478 transitions. [2022-11-20 21:32:44,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 21:32:44,935 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 44 [2022-11-20 21:32:44,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:32:44,936 INFO L225 Difference]: With dead ends: 322 [2022-11-20 21:32:44,936 INFO L226 Difference]: Without dead ends: 256 [2022-11-20 21:32:44,937 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 21:32:44,938 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 66 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 21:32:44,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 346 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 21:32:44,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2022-11-20 21:32:44,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 224. [2022-11-20 21:32:44,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 198 states have (on average 1.3535353535353536) internal successors, (268), 197 states have internal predecessors, (268), 22 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (28), 28 states have call predecessors, (28), 21 states have call successors, (28) [2022-11-20 21:32:44,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 318 transitions. [2022-11-20 21:32:44,961 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 318 transitions. Word has length 44 [2022-11-20 21:32:44,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:32:44,961 INFO L495 AbstractCegarLoop]: Abstraction has 224 states and 318 transitions. [2022-11-20 21:32:44,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-20 21:32:44,962 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 318 transitions. [2022-11-20 21:32:44,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-20 21:32:44,964 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:32:44,964 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:32:44,983 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af70f53-0d54-41d4-8a24-4b9c641287c5/bin/utaipan-6cKwYrpEi9/mathsat -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)] Ended with exit code 0 [2022-11-20 21:32:45,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af70f53-0d54-41d4-8a24-4b9c641287c5/bin/utaipan-6cKwYrpEi9/mathsat -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 21:32:45,177 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:32:45,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:32:45,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1143994910, now seen corresponding path program 1 times [2022-11-20 21:32:45,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 21:32:45,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [801018891] [2022-11-20 21:32:45,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:32:45,180 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 21:32:45,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af70f53-0d54-41d4-8a24-4b9c641287c5/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 21:32:45,181 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af70f53-0d54-41d4-8a24-4b9c641287c5/bin/utaipan-6cKwYrpEi9/mathsat -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 21:32:45,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af70f53-0d54-41d4-8a24-4b9c641287c5/bin/utaipan-6cKwYrpEi9/mathsat -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 21:32:45,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:32:45,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 21:32:45,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:32:45,449 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 21:32:45,449 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 21:32:45,449 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 21:32:45,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [801018891] [2022-11-20 21:32:45,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [801018891] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:32:45,450 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:32:45,450 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 21:32:45,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125183450] [2022-11-20 21:32:45,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:32:45,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 21:32:45,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 21:32:45,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 21:32:45,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 21:32:45,453 INFO L87 Difference]: Start difference. First operand 224 states and 318 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-20 21:32:45,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:32:45,820 INFO L93 Difference]: Finished difference Result 368 states and 522 transitions. [2022-11-20 21:32:45,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 21:32:45,821 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 44 [2022-11-20 21:32:45,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:32:45,823 INFO L225 Difference]: With dead ends: 368 [2022-11-20 21:32:45,823 INFO L226 Difference]: Without dead ends: 148 [2022-11-20 21:32:45,824 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 21:32:45,825 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 27 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 21:32:45,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 253 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 21:32:45,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2022-11-20 21:32:45,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 136. [2022-11-20 21:32:45,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 119 states have (on average 1.3277310924369747) internal successors, (158), 121 states have internal predecessors, (158), 12 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (17), 14 states have call predecessors, (17), 11 states have call successors, (17) [2022-11-20 21:32:45,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 187 transitions. [2022-11-20 21:32:45,842 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 187 transitions. Word has length 44 [2022-11-20 21:32:45,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:32:45,843 INFO L495 AbstractCegarLoop]: Abstraction has 136 states and 187 transitions. [2022-11-20 21:32:45,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-20 21:32:45,843 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 187 transitions. [2022-11-20 21:32:45,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-20 21:32:45,844 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:32:45,845 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:32:45,865 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af70f53-0d54-41d4-8a24-4b9c641287c5/bin/utaipan-6cKwYrpEi9/mathsat -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 21:32:46,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af70f53-0d54-41d4-8a24-4b9c641287c5/bin/utaipan-6cKwYrpEi9/mathsat -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 21:32:46,065 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:32:46,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:32:46,065 INFO L85 PathProgramCache]: Analyzing trace with hash -610339590, now seen corresponding path program 1 times [2022-11-20 21:32:46,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 21:32:46,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1736503220] [2022-11-20 21:32:46,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:32:46,066 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 21:32:46,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af70f53-0d54-41d4-8a24-4b9c641287c5/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 21:32:46,067 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af70f53-0d54-41d4-8a24-4b9c641287c5/bin/utaipan-6cKwYrpEi9/mathsat -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 21:32:46,072 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af70f53-0d54-41d4-8a24-4b9c641287c5/bin/utaipan-6cKwYrpEi9/mathsat -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 21:32:46,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:32:46,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 21:32:46,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:32:47,187 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 21:32:47,187 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 21:32:47,918 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-20 21:32:47,919 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 21:32:47,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1736503220] [2022-11-20 21:32:47,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1736503220] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 21:32:47,919 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 21:32:47,920 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2022-11-20 21:32:47,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76908352] [2022-11-20 21:32:47,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:32:47,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 21:32:47,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 21:32:47,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 21:32:47,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2022-11-20 21:32:47,922 INFO L87 Difference]: Start difference. First operand 136 states and 187 transitions. Second operand has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-20 21:32:50,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:32:50,388 INFO L93 Difference]: Finished difference Result 268 states and 395 transitions. [2022-11-20 21:32:50,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 21:32:50,389 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 45 [2022-11-20 21:32:50,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:32:50,391 INFO L225 Difference]: With dead ends: 268 [2022-11-20 21:32:50,391 INFO L226 Difference]: Without dead ends: 232 [2022-11-20 21:32:50,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2022-11-20 21:32:50,392 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 192 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 488 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-20 21:32:50,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 488 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-20 21:32:50,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2022-11-20 21:32:50,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 164. [2022-11-20 21:32:50,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 143 states have (on average 1.3216783216783217) internal successors, (189), 146 states have internal predecessors, (189), 16 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (21), 18 states have call predecessors, (21), 15 states have call successors, (21) [2022-11-20 21:32:50,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 226 transitions. [2022-11-20 21:32:50,415 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 226 transitions. Word has length 45 [2022-11-20 21:32:50,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:32:50,416 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 226 transitions. [2022-11-20 21:32:50,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-20 21:32:50,416 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 226 transitions. [2022-11-20 21:32:50,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-20 21:32:50,418 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:32:50,418 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:32:50,434 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af70f53-0d54-41d4-8a24-4b9c641287c5/bin/utaipan-6cKwYrpEi9/mathsat -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 21:32:50,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af70f53-0d54-41d4-8a24-4b9c641287c5/bin/utaipan-6cKwYrpEi9/mathsat -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 21:32:50,634 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:32:50,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:32:50,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1164667772, now seen corresponding path program 1 times [2022-11-20 21:32:50,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 21:32:50,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [939611474] [2022-11-20 21:32:50,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:32:50,635 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 21:32:50,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af70f53-0d54-41d4-8a24-4b9c641287c5/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 21:32:50,637 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af70f53-0d54-41d4-8a24-4b9c641287c5/bin/utaipan-6cKwYrpEi9/mathsat -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 21:32:50,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af70f53-0d54-41d4-8a24-4b9c641287c5/bin/utaipan-6cKwYrpEi9/mathsat -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 21:32:50,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:32:50,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 21:32:50,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:32:50,894 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-20 21:32:50,894 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 21:32:50,895 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 21:32:50,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [939611474] [2022-11-20 21:32:50,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [939611474] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:32:50,895 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:32:50,895 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 21:32:50,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998459742] [2022-11-20 21:32:50,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:32:50,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 21:32:50,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 21:32:50,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 21:32:50,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 21:32:50,897 INFO L87 Difference]: Start difference. First operand 164 states and 226 transitions. Second operand has 5 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-20 21:32:51,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:32:51,126 INFO L93 Difference]: Finished difference Result 171 states and 232 transitions. [2022-11-20 21:32:51,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 21:32:51,127 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 45 [2022-11-20 21:32:51,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:32:51,129 INFO L225 Difference]: With dead ends: 171 [2022-11-20 21:32:51,129 INFO L226 Difference]: Without dead ends: 164 [2022-11-20 21:32:51,129 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-20 21:32:51,130 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 5 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 21:32:51,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 384 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 21:32:51,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2022-11-20 21:32:51,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2022-11-20 21:32:51,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 143 states have (on average 1.3006993006993006) internal successors, (186), 146 states have internal predecessors, (186), 16 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (21), 18 states have call predecessors, (21), 15 states have call successors, (21) [2022-11-20 21:32:51,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 223 transitions. [2022-11-20 21:32:51,149 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 223 transitions. Word has length 45 [2022-11-20 21:32:51,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:32:51,149 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 223 transitions. [2022-11-20 21:32:51,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-20 21:32:51,150 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 223 transitions. [2022-11-20 21:32:51,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-20 21:32:51,151 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:32:51,151 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] [2022-11-20 21:32:51,167 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af70f53-0d54-41d4-8a24-4b9c641287c5/bin/utaipan-6cKwYrpEi9/mathsat -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)] Ended with exit code 0 [2022-11-20 21:32:51,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af70f53-0d54-41d4-8a24-4b9c641287c5/bin/utaipan-6cKwYrpEi9/mathsat -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 21:32:51,365 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:32:51,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:32:51,365 INFO L85 PathProgramCache]: Analyzing trace with hash -617643621, now seen corresponding path program 2 times [2022-11-20 21:32:51,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 21:32:51,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [812865803] [2022-11-20 21:32:51,365 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 21:32:51,365 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 21:32:51,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af70f53-0d54-41d4-8a24-4b9c641287c5/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 21:32:51,366 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af70f53-0d54-41d4-8a24-4b9c641287c5/bin/utaipan-6cKwYrpEi9/mathsat -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 21:32:51,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af70f53-0d54-41d4-8a24-4b9c641287c5/bin/utaipan-6cKwYrpEi9/mathsat -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 21:32:51,422 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 21:32:51,422 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 21:32:51,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 21:32:51,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:32:51,835 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 21:32:51,835 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 21:32:51,836 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 21:32:51,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [812865803] [2022-11-20 21:32:51,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [812865803] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:32:51,836 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:32:51,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 21:32:51,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976581382] [2022-11-20 21:32:51,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:32:51,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 21:32:51,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 21:32:51,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 21:32:51,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 21:32:51,838 INFO L87 Difference]: Start difference. First operand 164 states and 223 transitions. Second operand has 6 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-20 21:32:52,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:32:52,333 INFO L93 Difference]: Finished difference Result 203 states and 280 transitions. [2022-11-20 21:32:52,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 21:32:52,334 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 45 [2022-11-20 21:32:52,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:32:52,336 INFO L225 Difference]: With dead ends: 203 [2022-11-20 21:32:52,336 INFO L226 Difference]: Without dead ends: 201 [2022-11-20 21:32:52,336 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 40 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 21:32:52,337 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 38 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 602 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 13 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 21:32:52,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 602 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 13 Unchecked, 0.2s Time] [2022-11-20 21:32:52,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2022-11-20 21:32:52,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 168. [2022-11-20 21:32:52,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 146 states have (on average 1.2945205479452055) internal successors, (189), 149 states have internal predecessors, (189), 16 states have call successors, (16), 3 states have call predecessors, (16), 5 states have return successors, (21), 18 states have call predecessors, (21), 15 states have call successors, (21) [2022-11-20 21:32:52,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 226 transitions. [2022-11-20 21:32:52,355 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 226 transitions. Word has length 45 [2022-11-20 21:32:52,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:32:52,356 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 226 transitions. [2022-11-20 21:32:52,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-20 21:32:52,356 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 226 transitions. [2022-11-20 21:32:52,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-20 21:32:52,357 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:32:52,357 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] [2022-11-20 21:32:52,376 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af70f53-0d54-41d4-8a24-4b9c641287c5/bin/utaipan-6cKwYrpEi9/mathsat -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 21:32:52,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af70f53-0d54-41d4-8a24-4b9c641287c5/bin/utaipan-6cKwYrpEi9/mathsat -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 21:32:52,570 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:32:52,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:32:52,571 INFO L85 PathProgramCache]: Analyzing trace with hash -560385319, now seen corresponding path program 1 times [2022-11-20 21:32:52,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 21:32:52,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [801340272] [2022-11-20 21:32:52,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:32:52,572 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 21:32:52,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af70f53-0d54-41d4-8a24-4b9c641287c5/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 21:32:52,573 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af70f53-0d54-41d4-8a24-4b9c641287c5/bin/utaipan-6cKwYrpEi9/mathsat -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 21:32:52,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af70f53-0d54-41d4-8a24-4b9c641287c5/bin/utaipan-6cKwYrpEi9/mathsat -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 21:32:52,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:32:52,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 21:32:52,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:32:53,053 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 21:32:53,054 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 21:32:53,054 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 21:32:53,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [801340272] [2022-11-20 21:32:53,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [801340272] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:32:53,054 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:32:53,054 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 21:32:53,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166259498] [2022-11-20 21:32:53,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:32:53,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 21:32:53,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 21:32:53,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 21:32:53,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 21:32:53,056 INFO L87 Difference]: Start difference. First operand 168 states and 226 transitions. Second operand has 6 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-20 21:32:53,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:32:53,477 INFO L93 Difference]: Finished difference Result 213 states and 292 transitions. [2022-11-20 21:32:53,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 21:32:53,477 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 45 [2022-11-20 21:32:53,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:32:53,479 INFO L225 Difference]: With dead ends: 213 [2022-11-20 21:32:53,479 INFO L226 Difference]: Without dead ends: 211 [2022-11-20 21:32:53,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 40 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 21:32:53,481 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 38 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 12 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 21:32:53,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 469 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 12 Unchecked, 0.2s Time] [2022-11-20 21:32:53,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2022-11-20 21:32:53,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 172. [2022-11-20 21:32:53,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 149 states have (on average 1.2885906040268456) internal successors, (192), 152 states have internal predecessors, (192), 16 states have call successors, (16), 4 states have call predecessors, (16), 6 states have return successors, (21), 18 states have call predecessors, (21), 15 states have call successors, (21) [2022-11-20 21:32:53,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 229 transitions. [2022-11-20 21:32:53,500 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 229 transitions. Word has length 45 [2022-11-20 21:32:53,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:32:53,501 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 229 transitions. [2022-11-20 21:32:53,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-20 21:32:53,501 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 229 transitions. [2022-11-20 21:32:53,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-20 21:32:53,502 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:32:53,502 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:32:53,515 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af70f53-0d54-41d4-8a24-4b9c641287c5/bin/utaipan-6cKwYrpEi9/mathsat -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 21:32:53,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af70f53-0d54-41d4-8a24-4b9c641287c5/bin/utaipan-6cKwYrpEi9/mathsat -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 21:32:53,717 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:32:53,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:32:53,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1322710928, now seen corresponding path program 1 times [2022-11-20 21:32:53,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 21:32:53,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [152789850] [2022-11-20 21:32:53,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:32:53,718 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 21:32:53,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af70f53-0d54-41d4-8a24-4b9c641287c5/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 21:32:53,719 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af70f53-0d54-41d4-8a24-4b9c641287c5/bin/utaipan-6cKwYrpEi9/mathsat -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 21:32:53,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af70f53-0d54-41d4-8a24-4b9c641287c5/bin/utaipan-6cKwYrpEi9/mathsat -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 21:32:53,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:32:53,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 21:32:53,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:32:53,948 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-20 21:32:53,948 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 21:32:53,949 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 21:32:53,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [152789850] [2022-11-20 21:32:53,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [152789850] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:32:53,949 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:32:53,949 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 21:32:53,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759080850] [2022-11-20 21:32:53,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:32:53,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 21:32:53,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 21:32:53,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 21:32:53,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 21:32:53,951 INFO L87 Difference]: Start difference. First operand 172 states and 229 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-20 21:32:54,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:32:54,099 INFO L93 Difference]: Finished difference Result 284 states and 389 transitions. [2022-11-20 21:32:54,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 21:32:54,100 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 46 [2022-11-20 21:32:54,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:32:54,102 INFO L225 Difference]: With dead ends: 284 [2022-11-20 21:32:54,102 INFO L226 Difference]: Without dead ends: 232 [2022-11-20 21:32:54,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 21:32:54,104 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 75 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 21:32:54,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 322 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 21:32:54,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2022-11-20 21:32:54,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 191. [2022-11-20 21:32:54,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 165 states have (on average 1.2969696969696969) internal successors, (214), 167 states have internal predecessors, (214), 19 states have call successors, (19), 4 states have call predecessors, (19), 6 states have return successors, (24), 21 states have call predecessors, (24), 18 states have call successors, (24) [2022-11-20 21:32:54,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 257 transitions. [2022-11-20 21:32:54,133 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 257 transitions. Word has length 46 [2022-11-20 21:32:54,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:32:54,133 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 257 transitions. [2022-11-20 21:32:54,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-20 21:32:54,134 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 257 transitions. [2022-11-20 21:32:54,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-20 21:32:54,135 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:32:54,135 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:32:54,148 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af70f53-0d54-41d4-8a24-4b9c641287c5/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-20 21:32:54,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af70f53-0d54-41d4-8a24-4b9c641287c5/bin/utaipan-6cKwYrpEi9/mathsat -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 21:32:54,348 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:32:54,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:32:54,348 INFO L85 PathProgramCache]: Analyzing trace with hash -514674649, now seen corresponding path program 1 times [2022-11-20 21:32:54,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 21:32:54,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1524496010] [2022-11-20 21:32:54,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:32:54,349 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 21:32:54,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af70f53-0d54-41d4-8a24-4b9c641287c5/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 21:32:54,350 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af70f53-0d54-41d4-8a24-4b9c641287c5/bin/utaipan-6cKwYrpEi9/mathsat -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 21:32:54,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af70f53-0d54-41d4-8a24-4b9c641287c5/bin/utaipan-6cKwYrpEi9/mathsat -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 21:32:54,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:32:54,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 21:32:54,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:32:54,512 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-20 21:32:54,512 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 21:32:54,512 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 21:32:54,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1524496010] [2022-11-20 21:32:54,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1524496010] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:32:54,513 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:32:54,513 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 21:32:54,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196833410] [2022-11-20 21:32:54,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:32:54,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 21:32:54,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 21:32:54,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 21:32:54,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 21:32:54,514 INFO L87 Difference]: Start difference. First operand 191 states and 257 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-20 21:32:54,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:32:54,657 INFO L93 Difference]: Finished difference Result 206 states and 273 transitions. [2022-11-20 21:32:54,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 21:32:54,658 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 49 [2022-11-20 21:32:54,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:32:54,659 INFO L225 Difference]: With dead ends: 206 [2022-11-20 21:32:54,660 INFO L226 Difference]: Without dead ends: 167 [2022-11-20 21:32:54,660 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 21:32:54,661 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 1 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 21:32:54,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 288 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 21:32:54,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2022-11-20 21:32:54,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2022-11-20 21:32:54,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 141 states have (on average 1.3120567375886525) internal successors, (185), 144 states have internal predecessors, (185), 19 states have call successors, (19), 4 states have call predecessors, (19), 6 states have return successors, (22), 20 states have call predecessors, (22), 18 states have call successors, (22) [2022-11-20 21:32:54,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 226 transitions. [2022-11-20 21:32:54,681 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 226 transitions. Word has length 49 [2022-11-20 21:32:54,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:32:54,681 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 226 transitions. [2022-11-20 21:32:54,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-20 21:32:54,681 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 226 transitions. [2022-11-20 21:32:54,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-20 21:32:54,682 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:32:54,683 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, 1] [2022-11-20 21:32:54,700 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af70f53-0d54-41d4-8a24-4b9c641287c5/bin/utaipan-6cKwYrpEi9/mathsat -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 21:32:54,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af70f53-0d54-41d4-8a24-4b9c641287c5/bin/utaipan-6cKwYrpEi9/mathsat -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 21:32:54,900 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:32:54,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:32:54,901 INFO L85 PathProgramCache]: Analyzing trace with hash -627639643, now seen corresponding path program 1 times [2022-11-20 21:32:54,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 21:32:54,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [256757481] [2022-11-20 21:32:54,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:32:54,901 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 21:32:54,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af70f53-0d54-41d4-8a24-4b9c641287c5/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 21:32:54,902 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af70f53-0d54-41d4-8a24-4b9c641287c5/bin/utaipan-6cKwYrpEi9/mathsat -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 21:32:54,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af70f53-0d54-41d4-8a24-4b9c641287c5/bin/utaipan-6cKwYrpEi9/mathsat -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 21:32:54,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:32:54,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 21:32:54,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:32:55,206 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 21:32:55,206 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 21:32:55,206 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 21:32:55,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [256757481] [2022-11-20 21:32:55,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [256757481] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:32:55,207 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:32:55,207 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 21:32:55,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333719971] [2022-11-20 21:32:55,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:32:55,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 21:32:55,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 21:32:55,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 21:32:55,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 21:32:55,209 INFO L87 Difference]: Start difference. First operand 167 states and 226 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-20 21:32:55,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:32:55,688 INFO L93 Difference]: Finished difference Result 242 states and 331 transitions. [2022-11-20 21:32:55,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 21:32:55,689 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 50 [2022-11-20 21:32:55,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:32:55,691 INFO L225 Difference]: With dead ends: 242 [2022-11-20 21:32:55,691 INFO L226 Difference]: Without dead ends: 200 [2022-11-20 21:32:55,691 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-20 21:32:55,692 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 129 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 21:32:55,692 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 349 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 21:32:55,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2022-11-20 21:32:55,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 167. [2022-11-20 21:32:55,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 141 states have (on average 1.297872340425532) internal successors, (183), 144 states have internal predecessors, (183), 19 states have call successors, (19), 4 states have call predecessors, (19), 6 states have return successors, (22), 20 states have call predecessors, (22), 18 states have call successors, (22) [2022-11-20 21:32:55,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 224 transitions. [2022-11-20 21:32:55,713 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 224 transitions. Word has length 50 [2022-11-20 21:32:55,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:32:55,714 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 224 transitions. [2022-11-20 21:32:55,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-20 21:32:55,714 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 224 transitions. [2022-11-20 21:32:55,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-20 21:32:55,715 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:32:55,715 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 21:32:55,733 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af70f53-0d54-41d4-8a24-4b9c641287c5/bin/utaipan-6cKwYrpEi9/mathsat -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)] Ended with exit code 0 [2022-11-20 21:32:55,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af70f53-0d54-41d4-8a24-4b9c641287c5/bin/utaipan-6cKwYrpEi9/mathsat -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 21:32:55,928 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:32:55,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:32:55,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1892770879, now seen corresponding path program 1 times [2022-11-20 21:32:55,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 21:32:55,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [395622862] [2022-11-20 21:32:55,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:32:55,929 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 21:32:55,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af70f53-0d54-41d4-8a24-4b9c641287c5/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 21:32:55,930 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af70f53-0d54-41d4-8a24-4b9c641287c5/bin/utaipan-6cKwYrpEi9/mathsat -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 21:32:55,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af70f53-0d54-41d4-8a24-4b9c641287c5/bin/utaipan-6cKwYrpEi9/mathsat -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 21:32:55,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 21:32:55,997 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 21:32:56,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 21:32:56,072 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2022-11-20 21:32:56,072 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 21:32:56,073 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-11-20 21:32:56,075 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-11-20 21:32:56,105 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af70f53-0d54-41d4-8a24-4b9c641287c5/bin/utaipan-6cKwYrpEi9/mathsat -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 21:32:56,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af70f53-0d54-41d4-8a24-4b9c641287c5/bin/utaipan-6cKwYrpEi9/mathsat -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 21:32:56,302 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:32:56,305 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 21:32:56,347 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 09:32:56 BoogieIcfgContainer [2022-11-20 21:32:56,347 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 21:32:56,359 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 21:32:56,359 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 21:32:56,359 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 21:32:56,360 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:30:00" (3/4) ... [2022-11-20 21:32:56,361 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-20 21:32:56,507 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af70f53-0d54-41d4-8a24-4b9c641287c5/bin/utaipan-6cKwYrpEi9/witness.graphml [2022-11-20 21:32:56,507 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 21:32:56,508 INFO L158 Benchmark]: Toolchain (without parser) took 179789.60ms. Allocated memory was 62.9MB in the beginning and 83.9MB in the end (delta: 21.0MB). Free memory was 37.0MB in the beginning and 58.5MB in the end (delta: -21.5MB). Peak memory consumption was 3.5MB. Max. memory is 16.1GB. [2022-11-20 21:32:56,508 INFO L158 Benchmark]: CDTParser took 0.77ms. Allocated memory is still 62.9MB. Free memory was 41.2MB in the beginning and 41.1MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 21:32:56,509 INFO L158 Benchmark]: CACSL2BoogieTranslator took 379.70ms. Allocated memory was 62.9MB in the beginning and 83.9MB in the end (delta: 21.0MB). Free memory was 36.8MB in the beginning and 61.8MB in the end (delta: -25.0MB). Peak memory consumption was 16.6MB. Max. memory is 16.1GB. [2022-11-20 21:32:56,509 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.06ms. Allocated memory is still 83.9MB. Free memory was 61.5MB in the beginning and 59.7MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 21:32:56,509 INFO L158 Benchmark]: Boogie Preprocessor took 36.22ms. Allocated memory is still 83.9MB. Free memory was 59.7MB in the beginning and 57.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 21:32:56,510 INFO L158 Benchmark]: RCFGBuilder took 2841.89ms. Allocated memory is still 83.9MB. Free memory was 57.6MB in the beginning and 39.2MB in the end (delta: 18.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-20 21:32:56,510 INFO L158 Benchmark]: TraceAbstraction took 176332.93ms. Allocated memory is still 83.9MB. Free memory was 38.7MB in the beginning and 57.4MB in the end (delta: -18.6MB). Peak memory consumption was 18.4MB. Max. memory is 16.1GB. [2022-11-20 21:32:56,511 INFO L158 Benchmark]: Witness Printer took 148.57ms. Allocated memory is still 83.9MB. Free memory was 57.4MB in the beginning and 58.5MB in the end (delta: -1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 21:32:56,513 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.77ms. Allocated memory is still 62.9MB. Free memory was 41.2MB in the beginning and 41.1MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 379.70ms. Allocated memory was 62.9MB in the beginning and 83.9MB in the end (delta: 21.0MB). Free memory was 36.8MB in the beginning and 61.8MB in the end (delta: -25.0MB). Peak memory consumption was 16.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.06ms. Allocated memory is still 83.9MB. Free memory was 61.5MB in the beginning and 59.7MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 36.22ms. Allocated memory is still 83.9MB. Free memory was 59.7MB in the beginning and 57.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 2841.89ms. Allocated memory is still 83.9MB. Free memory was 57.6MB in the beginning and 39.2MB in the end (delta: 18.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 176332.93ms. Allocated memory is still 83.9MB. Free memory was 38.7MB in the beginning and 57.4MB in the end (delta: -18.6MB). Peak memory consumption was 18.4MB. Max. memory is 16.1GB. * Witness Printer took 148.57ms. Allocated memory is still 83.9MB. Free memory was 57.4MB in the beginning and 58.5MB in the end (delta: -1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 60]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L402] COND FALSE !(__VERIFIER_nondet_int()) [L405] CALL main2() [L269] unsigned int a ; [L270] unsigned int ma = __VERIFIER_nondet_uint(); [L271] signed char ea = __VERIFIER_nondet_char(); [L272] unsigned int b ; [L273] unsigned int mb = __VERIFIER_nondet_uint(); [L274] signed char eb = __VERIFIER_nondet_char(); [L275] unsigned int r_add ; [L276] unsigned int zero ; [L277] int sa ; [L278] int sb ; [L279] int tmp ; [L280] int tmp___0 ; [L281] int tmp___1 ; [L282] int tmp___2 ; [L283] int tmp___3 ; [L284] int tmp___4 ; [L285] int tmp___5 ; [L286] int tmp___6 ; [L287] int tmp___7 ; [L288] int tmp___8 ; [L289] int tmp___9 ; [L290] int __retres23 ; [L294] CALL, EXPR base2flt(0, 0) VAL [\old(e)=0, \old(m)=0] [L68] unsigned int res ; [L69] unsigned int __retres4 ; VAL [\old(e)=0, \old(m)=0, e=0, m=0] [L72] COND TRUE ! m [L73] __retres4 = 0U VAL [\old(e)=0, \old(m)=0, __retres4=0, e=0, m=0] [L123] return (__retres4); VAL [\old(e)=0, \old(m)=0, \result=0, __retres4=0, e=0, m=0] [L294] RET, EXPR base2flt(0, 0) VAL [base2flt(0, 0)=0] [L294] zero = base2flt(0, 0) [L295] CALL, EXPR base2flt(ma, ea) VAL [\old(e)=0, \old(m)=16777216] [L68] unsigned int res ; [L69] unsigned int __retres4 ; VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L72] COND FALSE !(! m) VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L78] COND FALSE !(m < 1U << 24U) VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L100] COND TRUE 1 VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L102] COND FALSE !(m >= 1U << 25U) VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L119] m = m & ~ (1U << 24U) [L120] res = m | ((unsigned int )(e + 128) << 24U) [L121] __retres4 = res VAL [\old(e)=0, \old(m)=16777216, __retres4=2147483648, e=0, m=0, res=2147483648] [L123] return (__retres4); VAL [\old(e)=0, \old(m)=16777216, \result=-2147483648, __retres4=2147483648, e=0, m=0, res=2147483648] [L295] RET, EXPR base2flt(ma, ea) VAL [base2flt(ma, ea)=-2147483648, ea=0, ma=16777216, zero=0] [L295] a = base2flt(ma, ea) [L296] CALL, EXPR base2flt(mb, eb) VAL [\old(e)=64, \old(m)=16777216] [L68] unsigned int res ; [L69] unsigned int __retres4 ; VAL [\old(e)=64, \old(m)=16777216, e=64, m=16777216] [L72] COND FALSE !(! m) VAL [\old(e)=64, \old(m)=16777216, e=64, m=16777216] [L78] COND FALSE !(m < 1U << 24U) VAL [\old(e)=64, \old(m)=16777216, e=64, m=16777216] [L100] COND TRUE 1 VAL [\old(e)=64, \old(m)=16777216, e=64, m=16777216] [L102] COND FALSE !(m >= 1U << 25U) VAL [\old(e)=64, \old(m)=16777216, e=64, m=16777216] [L119] m = m & ~ (1U << 24U) [L120] res = m | ((unsigned int )(e + 128) << 24U) [L121] __retres4 = res VAL [\old(e)=64, \old(m)=16777216, __retres4=3221225472, e=64, m=0, res=3221225472] [L123] return (__retres4); VAL [\old(e)=64, \old(m)=16777216, \result=-1073741824, __retres4=3221225472, e=64, m=0, res=3221225472] [L296] RET, EXPR base2flt(mb, eb) VAL [a=2147483648, base2flt(mb, eb)=-1073741824, ea=0, eb=64, ma=16777216, mb=16777216, zero=0] [L296] b = base2flt(mb, eb) [L298] COND FALSE !(a < zero) VAL [a=2147483648, b=3221225472, ea=0, eb=64, ma=16777216, mb=16777216, zero=0] [L301] COND TRUE a > zero [L302] tmp = 1 VAL [a=2147483648, b=3221225472, ea=0, eb=64, ma=16777216, mb=16777216, tmp=1, zero=0] [L306] sa = tmp VAL [a=2147483648, b=3221225472, ea=0, eb=64, ma=16777216, mb=16777216, sa=1, tmp=1, zero=0] [L308] COND FALSE !(b < zero) VAL [a=2147483648, b=3221225472, ea=0, eb=64, ma=16777216, mb=16777216, sa=1, tmp=1, zero=0] [L311] COND TRUE b > zero [L312] tmp___0 = 1 VAL [a=2147483648, b=3221225472, ea=0, eb=64, ma=16777216, mb=16777216, sa=1, tmp=1, tmp___0=1, zero=0] [L316] sb = tmp___0 VAL [a=2147483648, b=3221225472, ea=0, eb=64, ma=16777216, mb=16777216, sa=1, sb=1, tmp=1, tmp___0=1, zero=0] [L319] CALL addflt(a, b) [L127] unsigned int res ; [L128] unsigned int ma ; [L129] unsigned int mb ; [L130] unsigned int delta ; [L131] int ea ; [L132] int eb ; [L133] unsigned int tmp ; [L134] unsigned int __retres10 ; VAL [\old(a)=2147483648, \old(b)=3221225472, a=2147483648, b=3221225472] [L137] COND TRUE a < b [L138] tmp = a [L139] a = b [L140] b = tmp VAL [\old(a)=2147483648, \old(b)=3221225472, a=3221225472, b=2147483648, tmp=2147483648] [L144] COND FALSE !(! b) [L151] ma = a & ((1U << 24U) - 1U) [L152] ea = (int )(a >> 24U) - 128 [L153] ma = ma | (1U << 24U) [L154] mb = b & ((1U << 24U) - 1U) [L155] eb = (int )(b >> 24U) - 128 [L156] mb = mb | (1U << 24U) VAL [\old(a)=2147483648, \old(b)=3221225472, a=3221225472, b=2147483648, ea=64, eb=0, ma=16777216, mb=16777216, tmp=2147483648] [L157] CALL __VERIFIER_assert(ea >= eb) VAL [\old(cond)=1] [L59] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L157] RET __VERIFIER_assert(ea >= eb) VAL [\old(a)=2147483648, \old(b)=3221225472, a=3221225472, b=2147483648, ea=64, eb=0, ma=16777216, mb=16777216, tmp=2147483648] [L158] delta = ea - eb VAL [\old(a)=2147483648, \old(b)=3221225472, a=3221225472, b=2147483648, delta=64, ea=64, eb=0, ma=16777216, mb=16777216, tmp=2147483648] [L159] CALL __VERIFIER_assert(delta < sizeof(mb) * 8) VAL [\old(cond)=0] [L59] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L60] reach_error() VAL [\old(cond)=0, cond=0] - UnprovableResult [Line: 48]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 81 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 176.2s, OverallIterations: 15, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 17.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 1128 SdHoareTripleChecker+Valid, 9.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1103 mSDsluCounter, 6395 SdHoareTripleChecker+Invalid, 9.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 236 IncrementalHoareTripleChecker+Unchecked, 4783 mSDsCounter, 104 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 943 IncrementalHoareTripleChecker+Invalid, 1284 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 104 mSolverCounterUnsat, 1612 mSDtfsCounter, 943 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 761 GetRequests, 676 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 36.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=224occurred in iteration=6, InterpolantAutomatonStates: 91, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 14 MinimizatonAttempts, 456 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 75.8s SatisfiabilityAnalysisTime, 78.1s InterpolantComputationTime, 659 NumberOfCodeBlocks, 641 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 732 ConstructedInterpolants, 4 QuantifiedInterpolants, 1384 SizeOfPredicates, 49 NumberOfNonLiveVariables, 1162 ConjunctsInSsa, 90 ConjunctsInUnsatCore, 20 InterpolantComputations, 13 PerfectInterpolantSequences, 255/282 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-11-20 21:32:56,750 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af70f53-0d54-41d4-8a24-4b9c641287c5/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2022-11-20 21:32:56,789 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af70f53-0d54-41d4-8a24-4b9c641287c5/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 137 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE