./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/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_aa465e3d-1159-4ac4-ac9d-3ad6841e9c90/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa465e3d-1159-4ac4-ac9d-3ad6841e9c90/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_aa465e3d-1159-4ac4-ac9d-3ad6841e9c90/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa465e3d-1159-4ac4-ac9d-3ad6841e9c90/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa465e3d-1159-4ac4-ac9d-3ad6841e9c90/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_aa465e3d-1159-4ac4-ac9d-3ad6841e9c90/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 2e6e06de31959e386aafc2fb45c848364ae9fea32df4ba40928c607f134f313f --- 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 19:46:12,297 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 19:46:12,299 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 19:46:12,326 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 19:46:12,326 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 19:46:12,330 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 19:46:12,331 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 19:46:12,333 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 19:46:12,334 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 19:46:12,335 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 19:46:12,336 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 19:46:12,339 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 19:46:12,340 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 19:46:12,342 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 19:46:12,343 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 19:46:12,344 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 19:46:12,345 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 19:46:12,346 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 19:46:12,348 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 19:46:12,349 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 19:46:12,354 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 19:46:12,362 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 19:46:12,365 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 19:46:12,366 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 19:46:12,369 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 19:46:12,369 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 19:46:12,370 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 19:46:12,371 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 19:46:12,371 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 19:46:12,372 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 19:46:12,372 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 19:46:12,373 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 19:46:12,374 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 19:46:12,375 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 19:46:12,376 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 19:46:12,376 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 19:46:12,376 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 19:46:12,377 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 19:46:12,377 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 19:46:12,378 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 19:46:12,378 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 19:46:12,379 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa465e3d-1159-4ac4-ac9d-3ad6841e9c90/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-20 19:46:12,401 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 19:46:12,402 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 19:46:12,402 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 19:46:12,402 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 19:46:12,403 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 19:46:12,403 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 19:46:12,404 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 19:46:12,404 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 19:46:12,404 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 19:46:12,404 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-20 19:46:12,404 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 19:46:12,405 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 19:46:12,405 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-20 19:46:12,405 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-20 19:46:12,405 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 19:46:12,406 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-20 19:46:12,406 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-20 19:46:12,406 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-20 19:46:12,407 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 19:46:12,407 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 19:46:12,407 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 19:46:12,407 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 19:46:12,408 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 19:46:12,408 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 19:46:12,408 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 19:46:12,408 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 19:46:12,408 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 19:46:12,409 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 19:46:12,409 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 19:46:12,409 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 19:46:12,409 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 19:46:12,409 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 19:46:12,410 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 19:46:12,410 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 19:46:12,410 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-20 19:46:12,410 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 19:46:12,410 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 19:46:12,411 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-20 19:46:12,411 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 19:46:12,411 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 19:46:12,411 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 19:46:12,411 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_aa465e3d-1159-4ac4-ac9d-3ad6841e9c90/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa465e3d-1159-4ac4-ac9d-3ad6841e9c90/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2e6e06de31959e386aafc2fb45c848364ae9fea32df4ba40928c607f134f313f [2022-11-20 19:46:12,808 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 19:46:12,854 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 19:46:12,858 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 19:46:12,860 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 19:46:12,861 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 19:46:12,862 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa465e3d-1159-4ac4-ac9d-3ad6841e9c90/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c [2022-11-20 19:46:16,419 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 19:46:16,692 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 19:46:16,693 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa465e3d-1159-4ac4-ac9d-3ad6841e9c90/sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c [2022-11-20 19:46:16,701 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa465e3d-1159-4ac4-ac9d-3ad6841e9c90/bin/utaipan-6cKwYrpEi9/data/a050a2789/39f32c504f1143aeb7dc13879dc94a3e/FLAG43f825354 [2022-11-20 19:46:16,716 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa465e3d-1159-4ac4-ac9d-3ad6841e9c90/bin/utaipan-6cKwYrpEi9/data/a050a2789/39f32c504f1143aeb7dc13879dc94a3e [2022-11-20 19:46:16,719 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 19:46:16,721 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 19:46:16,722 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 19:46:16,722 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 19:46:16,732 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 19:46:16,733 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:46:16" (1/1) ... [2022-11-20 19:46:16,734 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6dd32d50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:46:16, skipping insertion in model container [2022-11-20 19:46:16,734 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:46:16" (1/1) ... [2022-11-20 19:46:16,742 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 19:46:16,781 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 19:46:16,974 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_aa465e3d-1159-4ac4-ac9d-3ad6841e9c90/sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c[730,743] [2022-11-20 19:46:17,002 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 19:46:17,013 INFO L158 Benchmark]: Toolchain (without parser) took 291.15ms. Allocated memory is still 142.6MB. Free memory was 104.5MB in the beginning and 95.1MB in the end (delta: 9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-20 19:46:17,013 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 142.6MB. Free memory is still 110.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 19:46:17,015 INFO L158 Benchmark]: CACSL2BoogieTranslator took 288.92ms. Allocated memory is still 142.6MB. Free memory was 104.5MB in the beginning and 95.1MB in the end (delta: 9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-20 19:46:17,016 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 142.6MB. Free memory is still 110.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 288.92ms. Allocated memory is still 142.6MB. Free memory was 104.5MB in the beginning and 95.1MB in the end (delta: 9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: NullPointerException: null: de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.TypeSizes.extractIntegerValue(TypeSizes.java:384) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa465e3d-1159-4ac4-ac9d-3ad6841e9c90/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa465e3d-1159-4ac4-ac9d-3ad6841e9c90/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_aa465e3d-1159-4ac4-ac9d-3ad6841e9c90/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa465e3d-1159-4ac4-ac9d-3ad6841e9c90/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa465e3d-1159-4ac4-ac9d-3ad6841e9c90/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_aa465e3d-1159-4ac4-ac9d-3ad6841e9c90/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 2e6e06de31959e386aafc2fb45c848364ae9fea32df4ba40928c607f134f313f --- 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 19:46:19,560 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 19:46:19,563 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 19:46:19,613 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 19:46:19,614 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 19:46:19,615 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 19:46:19,617 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 19:46:19,619 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 19:46:19,621 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 19:46:19,623 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 19:46:19,624 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 19:46:19,625 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 19:46:19,626 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 19:46:19,627 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 19:46:19,629 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 19:46:19,630 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 19:46:19,636 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 19:46:19,640 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 19:46:19,642 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 19:46:19,645 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 19:46:19,652 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 19:46:19,656 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 19:46:19,661 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 19:46:19,662 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 19:46:19,666 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 19:46:19,670 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 19:46:19,670 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 19:46:19,671 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 19:46:19,674 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 19:46:19,675 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 19:46:19,675 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 19:46:19,676 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 19:46:19,677 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 19:46:19,679 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 19:46:19,680 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 19:46:19,681 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 19:46:19,683 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 19:46:19,683 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 19:46:19,683 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 19:46:19,684 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 19:46:19,685 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 19:46:19,686 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa465e3d-1159-4ac4-ac9d-3ad6841e9c90/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-11-20 19:46:19,729 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 19:46:19,729 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 19:46:19,731 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 19:46:19,731 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 19:46:19,732 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 19:46:19,732 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 19:46:19,733 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 19:46:19,733 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 19:46:19,733 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 19:46:19,733 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 19:46:19,734 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 19:46:19,735 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 19:46:19,736 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 19:46:19,736 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 19:46:19,736 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 19:46:19,736 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 19:46:19,737 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 19:46:19,737 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 19:46:19,737 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 19:46:19,737 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 19:46:19,737 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-20 19:46:19,737 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-20 19:46:19,738 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 19:46:19,738 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 19:46:19,738 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 19:46:19,738 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 19:46:19,738 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 19:46:19,739 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 19:46:19,739 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 19:46:19,739 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 19:46:19,739 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 19:46:19,739 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 19:46:19,740 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 19:46:19,740 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-20 19:46:19,740 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-20 19:46:19,740 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 19:46:19,740 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 19:46:19,741 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-20 19:46:19,741 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_aa465e3d-1159-4ac4-ac9d-3ad6841e9c90/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa465e3d-1159-4ac4-ac9d-3ad6841e9c90/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2e6e06de31959e386aafc2fb45c848364ae9fea32df4ba40928c607f134f313f [2022-11-20 19:46:20,135 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 19:46:20,158 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 19:46:20,161 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 19:46:20,162 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 19:46:20,163 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 19:46:20,165 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa465e3d-1159-4ac4-ac9d-3ad6841e9c90/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c [2022-11-20 19:46:23,453 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 19:46:23,763 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 19:46:23,763 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa465e3d-1159-4ac4-ac9d-3ad6841e9c90/sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c [2022-11-20 19:46:23,782 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa465e3d-1159-4ac4-ac9d-3ad6841e9c90/bin/utaipan-6cKwYrpEi9/data/fbd188473/81a361696dae41649f9428323111f7e9/FLAG9dc90c109 [2022-11-20 19:46:23,814 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa465e3d-1159-4ac4-ac9d-3ad6841e9c90/bin/utaipan-6cKwYrpEi9/data/fbd188473/81a361696dae41649f9428323111f7e9 [2022-11-20 19:46:23,819 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 19:46:23,821 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 19:46:23,824 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 19:46:23,824 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 19:46:23,829 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 19:46:23,831 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:46:23" (1/1) ... [2022-11-20 19:46:23,832 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e7648fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:46:23, skipping insertion in model container [2022-11-20 19:46:23,833 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:46:23" (1/1) ... [2022-11-20 19:46:23,842 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 19:46:23,902 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 19:46:24,132 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_aa465e3d-1159-4ac4-ac9d-3ad6841e9c90/sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c[730,743] [2022-11-20 19:46:24,245 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 19:46:24,268 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 19:46:24,299 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_aa465e3d-1159-4ac4-ac9d-3ad6841e9c90/sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c[730,743] [2022-11-20 19:46:24,384 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 19:46:24,406 INFO L208 MainTranslator]: Completed translation [2022-11-20 19:46:24,407 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:46:24 WrapperNode [2022-11-20 19:46:24,407 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 19:46:24,409 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 19:46:24,409 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 19:46:24,409 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 19:46:24,419 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:46:24" (1/1) ... [2022-11-20 19:46:24,435 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:46:24" (1/1) ... [2022-11-20 19:46:24,465 INFO L138 Inliner]: procedures = 17, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 145 [2022-11-20 19:46:24,465 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 19:46:24,467 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 19:46:24,467 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 19:46:24,467 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 19:46:24,479 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:46:24" (1/1) ... [2022-11-20 19:46:24,481 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:46:24" (1/1) ... [2022-11-20 19:46:24,485 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:46:24" (1/1) ... [2022-11-20 19:46:24,485 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:46:24" (1/1) ... [2022-11-20 19:46:24,494 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:46:24" (1/1) ... [2022-11-20 19:46:24,500 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:46:24" (1/1) ... [2022-11-20 19:46:24,503 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:46:24" (1/1) ... [2022-11-20 19:46:24,505 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:46:24" (1/1) ... [2022-11-20 19:46:24,509 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 19:46:24,510 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 19:46:24,511 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 19:46:24,511 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 19:46:24,512 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:46:24" (1/1) ... [2022-11-20 19:46:24,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 19:46:24,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa465e3d-1159-4ac4-ac9d-3ad6841e9c90/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 19:46:24,552 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa465e3d-1159-4ac4-ac9d-3ad6841e9c90/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 19:46:24,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa465e3d-1159-4ac4-ac9d-3ad6841e9c90/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 19:46:24,607 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 19:46:24,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-20 19:46:24,608 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2022-11-20 19:46:24,608 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2022-11-20 19:46:24,609 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 19:46:24,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 19:46:24,609 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-20 19:46:24,609 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-20 19:46:24,719 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 19:46:24,722 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 19:46:25,123 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 19:46:25,143 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 19:46:25,144 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-20 19:46:25,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:46:25 BoogieIcfgContainer [2022-11-20 19:46:25,146 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 19:46:25,148 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 19:46:25,148 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 19:46:25,151 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 19:46:25,163 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 07:46:23" (1/3) ... [2022-11-20 19:46:25,164 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56711381 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:46:25, skipping insertion in model container [2022-11-20 19:46:25,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:46:24" (2/3) ... [2022-11-20 19:46:25,165 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56711381 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:46:25, skipping insertion in model container [2022-11-20 19:46:25,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:46:25" (3/3) ... [2022-11-20 19:46:25,166 INFO L112 eAbstractionObserver]: Analyzing ICFG soft_float_1-3a.c.cil.c [2022-11-20 19:46:25,203 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 19:46:25,205 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 19:46:25,290 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 19:46:25,303 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;@247431aa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 19:46:25,304 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 19:46:25,309 INFO L276 IsEmpty]: Start isEmpty. Operand has 72 states, 59 states have (on average 1.5932203389830508) internal successors, (94), 62 states have internal predecessors, (94), 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 19:46:25,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-20 19:46:25,320 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:46:25,321 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:46:25,322 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:46:25,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:46:25,331 INFO L85 PathProgramCache]: Analyzing trace with hash -1607439287, now seen corresponding path program 1 times [2022-11-20 19:46:25,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 19:46:25,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [662597394] [2022-11-20 19:46:25,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:46:25,346 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 19:46:25,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa465e3d-1159-4ac4-ac9d-3ad6841e9c90/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 19:46:25,359 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa465e3d-1159-4ac4-ac9d-3ad6841e9c90/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 19:46:25,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa465e3d-1159-4ac4-ac9d-3ad6841e9c90/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 19:46:25,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:46:25,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 19:46:25,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:46:25,688 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 19:46:25,688 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 19:46:25,819 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 19:46:25,819 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 19:46:25,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [662597394] [2022-11-20 19:46:25,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [662597394] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 19:46:25,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [27298036] [2022-11-20 19:46:25,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:46:25,821 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 19:46:25,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa465e3d-1159-4ac4-ac9d-3ad6841e9c90/bin/utaipan-6cKwYrpEi9/cvc4 [2022-11-20 19:46:25,858 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa465e3d-1159-4ac4-ac9d-3ad6841e9c90/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 19:46:25,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa465e3d-1159-4ac4-ac9d-3ad6841e9c90/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (3)] Waiting until timeout for monitored process [2022-11-20 19:46:26,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:46:26,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 19:46:26,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:46:26,179 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 19:46:26,180 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 19:46:26,289 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 19:46:26,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [27298036] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 19:46:26,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [566198009] [2022-11-20 19:46:26,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:46:26,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:46:26,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa465e3d-1159-4ac4-ac9d-3ad6841e9c90/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 19:46:26,296 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa465e3d-1159-4ac4-ac9d-3ad6841e9c90/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 19:46:26,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa465e3d-1159-4ac4-ac9d-3ad6841e9c90/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 19:46:26,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:46:26,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 19:46:26,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:46:26,434 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 19:46:26,435 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 19:46:26,514 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 19:46:26,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [566198009] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 19:46:26,515 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-20 19:46:26,516 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 8, 8, 8, 8] total 10 [2022-11-20 19:46:26,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136783106] [2022-11-20 19:46:26,520 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-20 19:46:26,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 19:46:26,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 19:46:26,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 19:46:26,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-20 19:46:26,580 INFO L87 Difference]: Start difference. First operand has 72 states, 59 states have (on average 1.5932203389830508) internal successors, (94), 62 states have internal predecessors, (94), 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 10 states, 10 states have (on average 2.8) internal successors, (28), 8 states have internal predecessors, (28), 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 19:46:27,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:46:27,513 INFO L93 Difference]: Finished difference Result 380 states and 643 transitions. [2022-11-20 19:46:27,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 19:46:27,517 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.8) internal successors, (28), 8 states have internal predecessors, (28), 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 32 [2022-11-20 19:46:27,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:46:27,533 INFO L225 Difference]: With dead ends: 380 [2022-11-20 19:46:27,533 INFO L226 Difference]: Without dead ends: 279 [2022-11-20 19:46:27,539 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2022-11-20 19:46:27,542 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 311 mSDsluCounter, 1487 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 1710 SdHoareTripleChecker+Invalid, 394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 19:46:27,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [320 Valid, 1710 Invalid, 394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 19:46:27,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2022-11-20 19:46:27,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 112. [2022-11-20 19:46:27,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 93 states have (on average 1.4301075268817205) internal successors, (133), 94 states have internal predecessors, (133), 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 19:46:27,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 169 transitions. [2022-11-20 19:46:27,618 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 169 transitions. Word has length 32 [2022-11-20 19:46:27,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:46:27,620 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 169 transitions. [2022-11-20 19:46:27,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.8) internal successors, (28), 8 states have internal predecessors, (28), 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 19:46:27,620 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 169 transitions. [2022-11-20 19:46:27,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-20 19:46:27,624 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:46:27,624 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] [2022-11-20 19:46:27,639 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa465e3d-1159-4ac4-ac9d-3ad6841e9c90/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (3)] Ended with exit code 0 [2022-11-20 19:46:27,838 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa465e3d-1159-4ac4-ac9d-3ad6841e9c90/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-20 19:46:28,060 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa465e3d-1159-4ac4-ac9d-3ad6841e9c90/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 19:46:28,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa465e3d-1159-4ac4-ac9d-3ad6841e9c90/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa465e3d-1159-4ac4-ac9d-3ad6841e9c90/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa465e3d-1159-4ac4-ac9d-3ad6841e9c90/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 19:46:28,228 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:46:28,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:46:28,230 INFO L85 PathProgramCache]: Analyzing trace with hash 125469278, now seen corresponding path program 1 times [2022-11-20 19:46:28,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 19:46:28,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2033160303] [2022-11-20 19:46:28,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:46:28,231 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 19:46:28,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa465e3d-1159-4ac4-ac9d-3ad6841e9c90/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 19:46:28,233 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa465e3d-1159-4ac4-ac9d-3ad6841e9c90/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 19:46:28,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa465e3d-1159-4ac4-ac9d-3ad6841e9c90/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)] Waiting until timeout for monitored process [2022-11-20 19:46:28,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:46:28,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 19:46:28,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:46:28,386 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 19:46:28,386 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 19:46:28,387 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 19:46:28,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2033160303] [2022-11-20 19:46:28,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2033160303] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:46:28,389 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:46:28,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 19:46:28,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074671262] [2022-11-20 19:46:28,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:46:28,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 19:46:28,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 19:46:28,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 19:46:28,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 19:46:28,393 INFO L87 Difference]: Start difference. First operand 112 states and 169 transitions. Second operand has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 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 19:46:28,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:46:28,549 INFO L93 Difference]: Finished difference Result 248 states and 376 transitions. [2022-11-20 19:46:28,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 19:46:28,550 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 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 40 [2022-11-20 19:46:28,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:46:28,556 INFO L225 Difference]: With dead ends: 248 [2022-11-20 19:46:28,556 INFO L226 Difference]: Without dead ends: 187 [2022-11-20 19:46:28,560 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 19:46:28,562 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 52 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 457 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 19:46:28,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 457 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 19:46:28,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2022-11-20 19:46:28,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 183. [2022-11-20 19:46:28,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 157 states have (on average 1.4203821656050954) internal successors, (223), 156 states have internal predecessors, (223), 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 19:46:28,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 273 transitions. [2022-11-20 19:46:28,603 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 273 transitions. Word has length 40 [2022-11-20 19:46:28,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:46:28,604 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 273 transitions. [2022-11-20 19:46:28,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 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 19:46:28,604 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 273 transitions. [2022-11-20 19:46:28,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-20 19:46:28,606 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:46:28,606 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] [2022-11-20 19:46:28,628 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa465e3d-1159-4ac4-ac9d-3ad6841e9c90/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)] Forceful destruction successful, exit code 0 [2022-11-20 19:46:28,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa465e3d-1159-4ac4-ac9d-3ad6841e9c90/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 19:46:28,828 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:46:28,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:46:28,829 INFO L85 PathProgramCache]: Analyzing trace with hash 805527648, now seen corresponding path program 1 times [2022-11-20 19:46:28,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 19:46:28,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1242570835] [2022-11-20 19:46:28,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:46:28,830 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 19:46:28,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa465e3d-1159-4ac4-ac9d-3ad6841e9c90/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 19:46:28,831 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa465e3d-1159-4ac4-ac9d-3ad6841e9c90/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 19:46:28,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa465e3d-1159-4ac4-ac9d-3ad6841e9c90/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 (6)] Waiting until timeout for monitored process [2022-11-20 19:46:28,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:46:28,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 19:46:28,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:46:29,002 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 19:46:29,003 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 19:46:29,003 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 19:46:29,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1242570835] [2022-11-20 19:46:29,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1242570835] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:46:29,004 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:46:29,004 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 19:46:29,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655750264] [2022-11-20 19:46:29,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:46:29,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 19:46:29,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 19:46:29,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 19:46:29,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 19:46:29,007 INFO L87 Difference]: Start difference. First operand 183 states and 273 transitions. Second operand has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 states have internal predecessors, (29), 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 19:46:29,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:46:29,203 INFO L93 Difference]: Finished difference Result 256 states and 383 transitions. [2022-11-20 19:46:29,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 19:46:29,204 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 states have internal predecessors, (29), 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 40 [2022-11-20 19:46:29,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:46:29,206 INFO L225 Difference]: With dead ends: 256 [2022-11-20 19:46:29,207 INFO L226 Difference]: Without dead ends: 201 [2022-11-20 19:46:29,207 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-20 19:46:29,209 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 105 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 539 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 19:46:29,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 539 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 19:46:29,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2022-11-20 19:46:29,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 174. [2022-11-20 19:46:29,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 151 states have (on average 1.3973509933774835) internal successors, (211), 150 states have internal predecessors, (211), 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 19:46:29,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 255 transitions. [2022-11-20 19:46:29,233 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 255 transitions. Word has length 40 [2022-11-20 19:46:29,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:46:29,234 INFO L495 AbstractCegarLoop]: Abstraction has 174 states and 255 transitions. [2022-11-20 19:46:29,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 states have internal predecessors, (29), 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 19:46:29,234 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 255 transitions. [2022-11-20 19:46:29,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-20 19:46:29,237 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:46:29,238 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] [2022-11-20 19:46:29,258 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa465e3d-1159-4ac4-ac9d-3ad6841e9c90/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 (6)] Forceful destruction successful, exit code 0 [2022-11-20 19:46:29,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa465e3d-1159-4ac4-ac9d-3ad6841e9c90/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 19:46:29,458 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:46:29,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:46:29,458 INFO L85 PathProgramCache]: Analyzing trace with hash 339137576, now seen corresponding path program 1 times [2022-11-20 19:46:29,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 19:46:29,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [156580566] [2022-11-20 19:46:29,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:46:29,459 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 19:46:29,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa465e3d-1159-4ac4-ac9d-3ad6841e9c90/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 19:46:29,465 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa465e3d-1159-4ac4-ac9d-3ad6841e9c90/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 19:46:29,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa465e3d-1159-4ac4-ac9d-3ad6841e9c90/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 19:46:29,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:46:29,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 19:46:29,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:46:29,604 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 19:46:29,605 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 19:46:29,605 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 19:46:29,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [156580566] [2022-11-20 19:46:29,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [156580566] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:46:29,605 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:46:29,606 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 19:46:29,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835099140] [2022-11-20 19:46:29,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:46:29,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 19:46:29,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 19:46:29,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 19:46:29,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 19:46:29,614 INFO L87 Difference]: Start difference. First operand 174 states and 255 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 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 19:46:29,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:46:29,710 INFO L93 Difference]: Finished difference Result 321 states and 477 transitions. [2022-11-20 19:46:29,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 19:46:29,712 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 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 43 [2022-11-20 19:46:29,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:46:29,714 INFO L225 Difference]: With dead ends: 321 [2022-11-20 19:46:29,721 INFO L226 Difference]: Without dead ends: 255 [2022-11-20 19:46:29,722 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 19:46:29,727 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 66 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 329 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 19:46:29,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 329 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 19:46:29,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2022-11-20 19:46:29,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 223. [2022-11-20 19:46:29,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 197 states have (on average 1.3553299492385786) internal successors, (267), 196 states have internal predecessors, (267), 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 19:46:29,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 317 transitions. [2022-11-20 19:46:29,777 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 317 transitions. Word has length 43 [2022-11-20 19:46:29,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:46:29,779 INFO L495 AbstractCegarLoop]: Abstraction has 223 states and 317 transitions. [2022-11-20 19:46:29,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 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 19:46:29,780 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 317 transitions. [2022-11-20 19:46:29,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-20 19:46:29,792 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:46:29,793 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] [2022-11-20 19:46:29,821 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa465e3d-1159-4ac4-ac9d-3ad6841e9c90/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 19:46:30,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa465e3d-1159-4ac4-ac9d-3ad6841e9c90/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 19:46:30,007 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:46:30,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:46:30,008 INFO L85 PathProgramCache]: Analyzing trace with hash -1682069059, now seen corresponding path program 1 times [2022-11-20 19:46:30,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 19:46:30,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1793156701] [2022-11-20 19:46:30,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:46:30,008 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 19:46:30,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa465e3d-1159-4ac4-ac9d-3ad6841e9c90/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 19:46:30,011 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa465e3d-1159-4ac4-ac9d-3ad6841e9c90/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 19:46:30,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa465e3d-1159-4ac4-ac9d-3ad6841e9c90/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 19:46:30,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:46:30,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 19:46:30,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:46:30,127 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 19:46:30,127 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 19:46:30,127 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 19:46:30,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1793156701] [2022-11-20 19:46:30,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1793156701] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:46:30,128 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:46:30,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 19:46:30,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606824756] [2022-11-20 19:46:30,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:46:30,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 19:46:30,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 19:46:30,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 19:46:30,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 19:46:30,130 INFO L87 Difference]: Start difference. First operand 223 states and 317 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), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-20 19:46:30,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:46:30,239 INFO L93 Difference]: Finished difference Result 367 states and 521 transitions. [2022-11-20 19:46:30,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 19:46:30,240 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), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 43 [2022-11-20 19:46:30,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:46:30,244 INFO L225 Difference]: With dead ends: 367 [2022-11-20 19:46:30,244 INFO L226 Difference]: Without dead ends: 147 [2022-11-20 19:46:30,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 19:46:30,246 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 27 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 19:46:30,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 250 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 19:46:30,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2022-11-20 19:46:30,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 135. [2022-11-20 19:46:30,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 118 states have (on average 1.3305084745762712) internal successors, (157), 120 states have internal predecessors, (157), 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 19:46:30,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 186 transitions. [2022-11-20 19:46:30,266 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 186 transitions. Word has length 43 [2022-11-20 19:46:30,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:46:30,267 INFO L495 AbstractCegarLoop]: Abstraction has 135 states and 186 transitions. [2022-11-20 19:46:30,267 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), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-20 19:46:30,267 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 186 transitions. [2022-11-20 19:46:30,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-20 19:46:30,268 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:46:30,269 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 19:46:30,282 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa465e3d-1159-4ac4-ac9d-3ad6841e9c90/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)] Ended with exit code 0 [2022-11-20 19:46:30,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa465e3d-1159-4ac4-ac9d-3ad6841e9c90/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 19:46:30,483 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:46:30,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:46:30,483 INFO L85 PathProgramCache]: Analyzing trace with hash -690232792, now seen corresponding path program 1 times [2022-11-20 19:46:30,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 19:46:30,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1767316326] [2022-11-20 19:46:30,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:46:30,484 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 19:46:30,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa465e3d-1159-4ac4-ac9d-3ad6841e9c90/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 19:46:30,487 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa465e3d-1159-4ac4-ac9d-3ad6841e9c90/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 19:46:30,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa465e3d-1159-4ac4-ac9d-3ad6841e9c90/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 19:46:30,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:46:30,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 19:46:30,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:46:30,795 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 19:46:30,796 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 19:46:30,959 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 19:46:30,959 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 19:46:30,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1767316326] [2022-11-20 19:46:30,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1767316326] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 19:46:30,960 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 19:46:30,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2022-11-20 19:46:30,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018359563] [2022-11-20 19:46:30,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:46:30,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 19:46:30,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 19:46:30,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 19:46:30,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2022-11-20 19:46:30,962 INFO L87 Difference]: Start difference. First operand 135 states and 186 transitions. Second operand has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 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 19:46:31,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:46:31,627 INFO L93 Difference]: Finished difference Result 267 states and 394 transitions. [2022-11-20 19:46:31,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 19:46:31,628 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 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 19:46:31,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:46:31,630 INFO L225 Difference]: With dead ends: 267 [2022-11-20 19:46:31,630 INFO L226 Difference]: Without dead ends: 231 [2022-11-20 19:46:31,631 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2022-11-20 19:46:31,631 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 187 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 502 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 19:46:31,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 502 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 19:46:31,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2022-11-20 19:46:31,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 163. [2022-11-20 19:46:31,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 142 states have (on average 1.323943661971831) internal successors, (188), 145 states have internal predecessors, (188), 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 19:46:31,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 225 transitions. [2022-11-20 19:46:31,666 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 225 transitions. Word has length 44 [2022-11-20 19:46:31,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:46:31,666 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 225 transitions. [2022-11-20 19:46:31,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 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 19:46:31,667 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 225 transitions. [2022-11-20 19:46:31,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-20 19:46:31,670 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:46:31,673 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 19:46:31,696 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa465e3d-1159-4ac4-ac9d-3ad6841e9c90/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)] Forceful destruction successful, exit code 0 [2022-11-20 19:46:31,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa465e3d-1159-4ac4-ac9d-3ad6841e9c90/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 19:46:31,883 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:46:31,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:46:31,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1084774570, now seen corresponding path program 1 times [2022-11-20 19:46:31,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 19:46:31,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1242807759] [2022-11-20 19:46:31,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:46:31,884 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 19:46:31,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa465e3d-1159-4ac4-ac9d-3ad6841e9c90/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 19:46:31,886 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa465e3d-1159-4ac4-ac9d-3ad6841e9c90/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 19:46:31,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa465e3d-1159-4ac4-ac9d-3ad6841e9c90/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 19:46:31,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:46:31,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 19:46:31,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:46:31,997 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 19:46:31,997 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 19:46:31,997 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 19:46:31,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1242807759] [2022-11-20 19:46:31,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1242807759] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:46:31,998 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:46:31,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 19:46:31,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427141237] [2022-11-20 19:46:31,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:46:31,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 19:46:31,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 19:46:32,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 19:46:32,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 19:46:32,000 INFO L87 Difference]: Start difference. First operand 163 states and 225 transitions. Second operand has 5 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 19:46:32,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:46:32,044 INFO L93 Difference]: Finished difference Result 170 states and 231 transitions. [2022-11-20 19:46:32,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 19:46:32,044 INFO L78 Accepts]: Start accepts. Automaton has has 5 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 19:46:32,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:46:32,046 INFO L225 Difference]: With dead ends: 170 [2022-11-20 19:46:32,046 INFO L226 Difference]: Without dead ends: 163 [2022-11-20 19:46:32,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-20 19:46:32,048 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 5 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 19:46:32,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 380 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 19:46:32,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2022-11-20 19:46:32,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2022-11-20 19:46:32,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 142 states have (on average 1.3028169014084507) internal successors, (185), 145 states have internal predecessors, (185), 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 19:46:32,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 222 transitions. [2022-11-20 19:46:32,064 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 222 transitions. Word has length 44 [2022-11-20 19:46:32,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:46:32,064 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 222 transitions. [2022-11-20 19:46:32,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 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 19:46:32,065 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 222 transitions. [2022-11-20 19:46:32,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-20 19:46:32,065 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:46:32,066 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] [2022-11-20 19:46:32,087 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa465e3d-1159-4ac4-ac9d-3ad6841e9c90/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 19:46:32,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa465e3d-1159-4ac4-ac9d-3ad6841e9c90/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 19:46:32,287 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:46:32,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:46:32,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1335974199, now seen corresponding path program 2 times [2022-11-20 19:46:32,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 19:46:32,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [228367602] [2022-11-20 19:46:32,288 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 19:46:32,289 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 19:46:32,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa465e3d-1159-4ac4-ac9d-3ad6841e9c90/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 19:46:32,289 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa465e3d-1159-4ac4-ac9d-3ad6841e9c90/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 19:46:32,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa465e3d-1159-4ac4-ac9d-3ad6841e9c90/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 19:46:32,369 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 19:46:32,369 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 19:46:32,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 19:46:32,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:46:32,554 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 19:46:32,554 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 19:46:32,554 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 19:46:32,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [228367602] [2022-11-20 19:46:32,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [228367602] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:46:32,555 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:46:32,555 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 19:46:32,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572731880] [2022-11-20 19:46:32,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:46:32,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 19:46:32,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 19:46:32,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 19:46:32,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 19:46:32,558 INFO L87 Difference]: Start difference. First operand 163 states and 222 transitions. Second operand has 6 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 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 19:46:32,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:46:32,670 INFO L93 Difference]: Finished difference Result 202 states and 279 transitions. [2022-11-20 19:46:32,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 19:46:32,671 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 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 19:46:32,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:46:32,673 INFO L225 Difference]: With dead ends: 202 [2022-11-20 19:46:32,673 INFO L226 Difference]: Without dead ends: 200 [2022-11-20 19:46:32,673 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 19:46:32,674 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 38 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 599 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 14 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 19:46:32,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 599 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 14 Unchecked, 0.1s Time] [2022-11-20 19:46:32,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2022-11-20 19:46:32,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 167. [2022-11-20 19:46:32,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 145 states have (on average 1.296551724137931) internal successors, (188), 148 states have internal predecessors, (188), 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 19:46:32,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 225 transitions. [2022-11-20 19:46:32,710 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 225 transitions. Word has length 44 [2022-11-20 19:46:32,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:46:32,713 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 225 transitions. [2022-11-20 19:46:32,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 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 19:46:32,713 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 225 transitions. [2022-11-20 19:46:32,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-20 19:46:32,714 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:46:32,714 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] [2022-11-20 19:46:32,727 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa465e3d-1159-4ac4-ac9d-3ad6841e9c90/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 19:46:32,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa465e3d-1159-4ac4-ac9d-3ad6841e9c90/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 19:46:32,915 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:46:32,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:46:32,915 INFO L85 PathProgramCache]: Analyzing trace with hash -1278715897, now seen corresponding path program 1 times [2022-11-20 19:46:32,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 19:46:32,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [162295335] [2022-11-20 19:46:32,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:46:32,916 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 19:46:32,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa465e3d-1159-4ac4-ac9d-3ad6841e9c90/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 19:46:32,917 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa465e3d-1159-4ac4-ac9d-3ad6841e9c90/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 19:46:32,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa465e3d-1159-4ac4-ac9d-3ad6841e9c90/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 19:46:32,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:46:32,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 19:46:32,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:46:33,110 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 19:46:33,110 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 19:46:33,110 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 19:46:33,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [162295335] [2022-11-20 19:46:33,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [162295335] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:46:33,111 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:46:33,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 19:46:33,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450948846] [2022-11-20 19:46:33,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:46:33,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 19:46:33,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 19:46:33,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 19:46:33,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 19:46:33,113 INFO L87 Difference]: Start difference. First operand 167 states and 225 transitions. Second operand has 6 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 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 19:46:33,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:46:33,217 INFO L93 Difference]: Finished difference Result 212 states and 291 transitions. [2022-11-20 19:46:33,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 19:46:33,218 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 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 19:46:33,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:46:33,219 INFO L225 Difference]: With dead ends: 212 [2022-11-20 19:46:33,220 INFO L226 Difference]: Without dead ends: 210 [2022-11-20 19:46:33,220 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 19:46:33,221 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 38 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 12 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 19:46:33,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 464 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 12 Unchecked, 0.0s Time] [2022-11-20 19:46:33,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2022-11-20 19:46:33,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 171. [2022-11-20 19:46:33,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 148 states have (on average 1.2905405405405406) internal successors, (191), 151 states have internal predecessors, (191), 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 19:46:33,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 228 transitions. [2022-11-20 19:46:33,241 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 228 transitions. Word has length 44 [2022-11-20 19:46:33,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:46:33,241 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 228 transitions. [2022-11-20 19:46:33,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 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 19:46:33,242 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 228 transitions. [2022-11-20 19:46:33,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-20 19:46:33,243 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:46:33,243 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] [2022-11-20 19:46:33,262 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa465e3d-1159-4ac4-ac9d-3ad6841e9c90/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)] Forceful destruction successful, exit code 0 [2022-11-20 19:46:33,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa465e3d-1159-4ac4-ac9d-3ad6841e9c90/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 19:46:33,456 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:46:33,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:46:33,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1134786859, now seen corresponding path program 1 times [2022-11-20 19:46:33,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 19:46:33,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2137852756] [2022-11-20 19:46:33,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:46:33,457 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 19:46:33,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa465e3d-1159-4ac4-ac9d-3ad6841e9c90/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 19:46:33,458 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa465e3d-1159-4ac4-ac9d-3ad6841e9c90/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 19:46:33,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa465e3d-1159-4ac4-ac9d-3ad6841e9c90/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 19:46:33,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:46:33,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 19:46:33,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:46:33,565 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 19:46:33,566 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 19:46:33,566 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 19:46:33,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2137852756] [2022-11-20 19:46:33,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2137852756] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:46:33,566 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:46:33,566 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 19:46:33,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554344281] [2022-11-20 19:46:33,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:46:33,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 19:46:33,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 19:46:33,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 19:46:33,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 19:46:33,568 INFO L87 Difference]: Start difference. First operand 171 states and 228 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 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 19:46:33,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:46:33,632 INFO L93 Difference]: Finished difference Result 283 states and 388 transitions. [2022-11-20 19:46:33,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 19:46:33,633 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 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 19:46:33,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:46:33,636 INFO L225 Difference]: With dead ends: 283 [2022-11-20 19:46:33,636 INFO L226 Difference]: Without dead ends: 231 [2022-11-20 19:46:33,637 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 19:46:33,638 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 75 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 19:46:33,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 305 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 19:46:33,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2022-11-20 19:46:33,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 190. [2022-11-20 19:46:33,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 164 states have (on average 1.298780487804878) internal successors, (213), 166 states have internal predecessors, (213), 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 19:46:33,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 256 transitions. [2022-11-20 19:46:33,668 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 256 transitions. Word has length 45 [2022-11-20 19:46:33,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:46:33,669 INFO L495 AbstractCegarLoop]: Abstraction has 190 states and 256 transitions. [2022-11-20 19:46:33,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 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 19:46:33,669 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 256 transitions. [2022-11-20 19:46:33,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-20 19:46:33,671 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:46:33,671 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] [2022-11-20 19:46:33,694 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa465e3d-1159-4ac4-ac9d-3ad6841e9c90/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 19:46:33,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa465e3d-1159-4ac4-ac9d-3ad6841e9c90/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 19:46:33,890 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:46:33,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:46:33,890 INFO L85 PathProgramCache]: Analyzing trace with hash 702695573, now seen corresponding path program 1 times [2022-11-20 19:46:33,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 19:46:33,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [301566014] [2022-11-20 19:46:33,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:46:33,891 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 19:46:33,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa465e3d-1159-4ac4-ac9d-3ad6841e9c90/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 19:46:33,893 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa465e3d-1159-4ac4-ac9d-3ad6841e9c90/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 19:46:33,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa465e3d-1159-4ac4-ac9d-3ad6841e9c90/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 19:46:33,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:46:33,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 19:46:33,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:46:33,982 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 19:46:33,982 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 19:46:33,983 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 19:46:33,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [301566014] [2022-11-20 19:46:33,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [301566014] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:46:33,983 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:46:33,983 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 19:46:33,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623472711] [2022-11-20 19:46:33,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:46:33,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 19:46:33,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 19:46:33,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 19:46:33,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 19:46:33,986 INFO L87 Difference]: Start difference. First operand 190 states and 256 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), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-20 19:46:34,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:46:34,021 INFO L93 Difference]: Finished difference Result 205 states and 272 transitions. [2022-11-20 19:46:34,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 19:46:34,022 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), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 48 [2022-11-20 19:46:34,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:46:34,028 INFO L225 Difference]: With dead ends: 205 [2022-11-20 19:46:34,028 INFO L226 Difference]: Without dead ends: 166 [2022-11-20 19:46:34,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 19:46:34,029 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 1 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 19:46:34,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 285 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 19:46:34,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2022-11-20 19:46:34,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2022-11-20 19:46:34,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 140 states have (on average 1.3142857142857143) internal successors, (184), 143 states have internal predecessors, (184), 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 19:46:34,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 225 transitions. [2022-11-20 19:46:34,049 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 225 transitions. Word has length 48 [2022-11-20 19:46:34,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:46:34,049 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 225 transitions. [2022-11-20 19:46:34,050 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), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-20 19:46:34,050 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 225 transitions. [2022-11-20 19:46:34,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-20 19:46:34,051 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:46:34,052 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:46:34,070 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa465e3d-1159-4ac4-ac9d-3ad6841e9c90/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 19:46:34,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa465e3d-1159-4ac4-ac9d-3ad6841e9c90/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 19:46:34,271 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:46:34,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:46:34,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1060673824, now seen corresponding path program 1 times [2022-11-20 19:46:34,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 19:46:34,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1295554351] [2022-11-20 19:46:34,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:46:34,272 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 19:46:34,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa465e3d-1159-4ac4-ac9d-3ad6841e9c90/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 19:46:34,273 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa465e3d-1159-4ac4-ac9d-3ad6841e9c90/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 19:46:34,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa465e3d-1159-4ac4-ac9d-3ad6841e9c90/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 19:46:34,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:46:34,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 19:46:34,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:46:34,373 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 19:46:34,374 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 19:46:34,374 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 19:46:34,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1295554351] [2022-11-20 19:46:34,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1295554351] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:46:34,375 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:46:34,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 19:46:34,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119966891] [2022-11-20 19:46:34,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:46:34,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 19:46:34,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 19:46:34,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 19:46:34,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 19:46:34,377 INFO L87 Difference]: Start difference. First operand 166 states and 225 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 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 19:46:34,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:46:34,536 INFO L93 Difference]: Finished difference Result 241 states and 330 transitions. [2022-11-20 19:46:34,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 19:46:34,537 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 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 19:46:34,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:46:34,539 INFO L225 Difference]: With dead ends: 241 [2022-11-20 19:46:34,539 INFO L226 Difference]: Without dead ends: 199 [2022-11-20 19:46:34,540 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-20 19:46:34,540 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 129 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 19:46:34,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 345 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 19:46:34,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2022-11-20 19:46:34,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 166. [2022-11-20 19:46:34,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 140 states have (on average 1.3) internal successors, (182), 143 states have internal predecessors, (182), 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 19:46:34,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 223 transitions. [2022-11-20 19:46:34,572 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 223 transitions. Word has length 49 [2022-11-20 19:46:34,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:46:34,572 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 223 transitions. [2022-11-20 19:46:34,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 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 19:46:34,573 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 223 transitions. [2022-11-20 19:46:34,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-20 19:46:34,574 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:46:34,574 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:46:34,591 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa465e3d-1159-4ac4-ac9d-3ad6841e9c90/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 19:46:34,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa465e3d-1159-4ac4-ac9d-3ad6841e9c90/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 19:46:34,788 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:46:34,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:46:34,789 INFO L85 PathProgramCache]: Analyzing trace with hash 45509775, now seen corresponding path program 1 times [2022-11-20 19:46:34,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 19:46:34,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2113599758] [2022-11-20 19:46:34,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:46:34,789 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 19:46:34,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa465e3d-1159-4ac4-ac9d-3ad6841e9c90/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 19:46:34,792 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa465e3d-1159-4ac4-ac9d-3ad6841e9c90/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 19:46:34,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa465e3d-1159-4ac4-ac9d-3ad6841e9c90/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 19:46:34,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 19:46:34,869 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 19:46:34,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 19:46:34,962 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2022-11-20 19:46:34,962 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 19:46:34,964 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-20 19:46:34,987 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa465e3d-1159-4ac4-ac9d-3ad6841e9c90/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 19:46:35,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa465e3d-1159-4ac4-ac9d-3ad6841e9c90/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 19:46:35,180 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:46:35,184 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 19:46:35,295 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 07:46:35 BoogieIcfgContainer [2022-11-20 19:46:35,295 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 19:46:35,296 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 19:46:35,296 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 19:46:35,296 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 19:46:35,297 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:46:25" (3/4) ... [2022-11-20 19:46:35,298 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-20 19:46:35,377 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa465e3d-1159-4ac4-ac9d-3ad6841e9c90/bin/utaipan-6cKwYrpEi9/witness.graphml [2022-11-20 19:46:35,378 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 19:46:35,379 INFO L158 Benchmark]: Toolchain (without parser) took 11558.18ms. Allocated memory was 60.8MB in the beginning and 117.4MB in the end (delta: 56.6MB). Free memory was 40.3MB in the beginning and 89.3MB in the end (delta: -49.0MB). Peak memory consumption was 5.6MB. Max. memory is 16.1GB. [2022-11-20 19:46:35,379 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 60.8MB. Free memory is still 38.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 19:46:35,380 INFO L158 Benchmark]: CACSL2BoogieTranslator took 584.05ms. Allocated memory was 60.8MB in the beginning and 79.7MB in the end (delta: 18.9MB). Free memory was 40.1MB in the beginning and 59.0MB in the end (delta: -18.8MB). Peak memory consumption was 15.7MB. Max. memory is 16.1GB. [2022-11-20 19:46:35,380 INFO L158 Benchmark]: Boogie Procedure Inliner took 56.85ms. Allocated memory is still 79.7MB. Free memory was 59.0MB in the beginning and 56.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 19:46:35,381 INFO L158 Benchmark]: Boogie Preprocessor took 42.73ms. Allocated memory is still 79.7MB. Free memory was 56.9MB in the beginning and 55.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 19:46:35,381 INFO L158 Benchmark]: RCFGBuilder took 635.60ms. Allocated memory is still 79.7MB. Free memory was 55.2MB in the beginning and 38.1MB in the end (delta: 17.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-20 19:46:35,382 INFO L158 Benchmark]: TraceAbstraction took 10147.80ms. Allocated memory was 79.7MB in the beginning and 117.4MB in the end (delta: 37.7MB). Free memory was 37.4MB in the beginning and 93.4MB in the end (delta: -56.0MB). Peak memory consumption was 11.3MB. Max. memory is 16.1GB. [2022-11-20 19:46:35,382 INFO L158 Benchmark]: Witness Printer took 82.01ms. Allocated memory is still 117.4MB. Free memory was 93.4MB in the beginning and 89.3MB in the end (delta: 4.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 19:46:35,385 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 60.8MB. Free memory is still 38.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 584.05ms. Allocated memory was 60.8MB in the beginning and 79.7MB in the end (delta: 18.9MB). Free memory was 40.1MB in the beginning and 59.0MB in the end (delta: -18.8MB). Peak memory consumption was 15.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 56.85ms. Allocated memory is still 79.7MB. Free memory was 59.0MB in the beginning and 56.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 42.73ms. Allocated memory is still 79.7MB. Free memory was 56.9MB in the beginning and 55.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 635.60ms. Allocated memory is still 79.7MB. Free memory was 55.2MB in the beginning and 38.1MB in the end (delta: 17.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 10147.80ms. Allocated memory was 79.7MB in the beginning and 117.4MB in the end (delta: 37.7MB). Free memory was 37.4MB in the beginning and 93.4MB in the end (delta: -56.0MB). Peak memory consumption was 11.3MB. Max. memory is 16.1GB. * Witness Printer took 82.01ms. Allocated memory is still 117.4MB. Free memory was 93.4MB in the beginning and 89.3MB in the end (delta: 4.1MB). 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: 17]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L226] unsigned int a ; [L227] unsigned int ma = __VERIFIER_nondet_uint(); [L228] signed char ea = __VERIFIER_nondet_char(); [L229] unsigned int b ; [L230] unsigned int mb = __VERIFIER_nondet_uint(); [L231] signed char eb = __VERIFIER_nondet_char(); [L232] unsigned int r_add ; [L233] unsigned int zero ; [L234] int sa ; [L235] int sb ; [L236] int tmp ; [L237] int tmp___0 ; [L238] int tmp___1 ; [L239] int tmp___2 ; [L240] int tmp___3 ; [L241] int tmp___4 ; [L242] int tmp___5 ; [L243] int tmp___6 ; [L244] int tmp___7 ; [L245] int tmp___8 ; [L246] int tmp___9 ; [L247] int __retres23 ; [L251] CALL, EXPR base2flt(0, 0) VAL [\old(e)=0, \old(m)=0] [L25] unsigned int res ; [L26] unsigned int __retres4 ; VAL [\old(e)=0, \old(m)=0, e=0, m=0] [L29] COND TRUE ! m [L30] __retres4 = 0U VAL [\old(e)=0, \old(m)=0, __retres4=0, e=0, m=0] [L80] return (__retres4); VAL [\old(e)=0, \old(m)=0, \result=0, __retres4=0, e=0, m=0] [L251] RET, EXPR base2flt(0, 0) VAL [base2flt(0, 0)=0] [L251] zero = base2flt(0, 0) [L252] CALL, EXPR base2flt(ma, ea) VAL [\old(e)=0, \old(m)=16777216] [L25] unsigned int res ; [L26] unsigned int __retres4 ; VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L29] COND FALSE !(! m) VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L35] COND FALSE !(m < 1U << 24U) VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L57] COND TRUE 1 VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L59] COND FALSE !(m >= 1U << 25U) VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L76] m = m & ~ (1U << 24U) [L77] res = m | ((unsigned int )(e + 128) << 24U) [L78] __retres4 = res VAL [\old(e)=0, \old(m)=16777216, __retres4=2147483648, e=0, m=0, res=2147483648] [L80] return (__retres4); VAL [\old(e)=0, \old(m)=16777216, \result=-2147483648, __retres4=2147483648, e=0, m=0, res=2147483648] [L252] RET, EXPR base2flt(ma, ea) VAL [base2flt(ma, ea)=-2147483648, ea=0, ma=16777216, zero=0] [L252] a = base2flt(ma, ea) [L253] CALL, EXPR base2flt(mb, eb) VAL [\old(e)=64, \old(m)=16777216] [L25] unsigned int res ; [L26] unsigned int __retres4 ; VAL [\old(e)=64, \old(m)=16777216, e=64, m=16777216] [L29] COND FALSE !(! m) VAL [\old(e)=64, \old(m)=16777216, e=64, m=16777216] [L35] COND FALSE !(m < 1U << 24U) VAL [\old(e)=64, \old(m)=16777216, e=64, m=16777216] [L57] COND TRUE 1 VAL [\old(e)=64, \old(m)=16777216, e=64, m=16777216] [L59] COND FALSE !(m >= 1U << 25U) VAL [\old(e)=64, \old(m)=16777216, e=64, m=16777216] [L76] m = m & ~ (1U << 24U) [L77] res = m | ((unsigned int )(e + 128) << 24U) [L78] __retres4 = res VAL [\old(e)=64, \old(m)=16777216, __retres4=3221225472, e=64, m=0, res=3221225472] [L80] return (__retres4); VAL [\old(e)=64, \old(m)=16777216, \result=-1073741824, __retres4=3221225472, e=64, m=0, res=3221225472] [L253] RET, EXPR base2flt(mb, eb) VAL [a=2147483648, base2flt(mb, eb)=-1073741824, ea=0, eb=64, ma=16777216, mb=16777216, zero=0] [L253] b = base2flt(mb, eb) [L255] COND FALSE !(a < zero) VAL [a=2147483648, b=3221225472, ea=0, eb=64, ma=16777216, mb=16777216, zero=0] [L258] COND TRUE a > zero [L259] tmp = 1 VAL [a=2147483648, b=3221225472, ea=0, eb=64, ma=16777216, mb=16777216, tmp=1, zero=0] [L263] sa = tmp VAL [a=2147483648, b=3221225472, ea=0, eb=64, ma=16777216, mb=16777216, sa=1, tmp=1, zero=0] [L265] COND FALSE !(b < zero) VAL [a=2147483648, b=3221225472, ea=0, eb=64, ma=16777216, mb=16777216, sa=1, tmp=1, zero=0] [L268] COND TRUE b > zero [L269] 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] [L273] 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] [L276] CALL addflt(a, b) [L84] unsigned int res ; [L85] unsigned int ma ; [L86] unsigned int mb ; [L87] unsigned int delta ; [L88] int ea ; [L89] int eb ; [L90] unsigned int tmp ; [L91] unsigned int __retres10 ; VAL [\old(a)=2147483648, \old(b)=3221225472, a=2147483648, b=3221225472] [L94] COND TRUE a < b [L95] tmp = a [L96] a = b [L97] b = tmp VAL [\old(a)=2147483648, \old(b)=3221225472, a=3221225472, b=2147483648, tmp=2147483648] [L101] COND FALSE !(! b) [L108] ma = a & ((1U << 24U) - 1U) [L109] ea = (int )(a >> 24U) - 128 [L110] ma = ma | (1U << 24U) [L111] mb = b & ((1U << 24U) - 1U) [L112] eb = (int )(b >> 24U) - 128 [L113] 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] [L114] CALL __VERIFIER_assert(ea >= eb) VAL [\old(cond)=1] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L114] 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] [L115] 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] [L116] CALL __VERIFIER_assert(delta < sizeof(mb) * 8) VAL [\old(cond)=0] [L16] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L17] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 72 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 9.9s, OverallIterations: 13, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1061 SdHoareTripleChecker+Valid, 1.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1034 mSDsluCounter, 6165 SdHoareTripleChecker+Invalid, 1.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 26 IncrementalHoareTripleChecker+Unchecked, 4777 mSDsCounter, 118 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 896 IncrementalHoareTripleChecker+Invalid, 1040 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 118 mSolverCounterUnsat, 1388 mSDtfsCounter, 896 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 730 GetRequests, 651 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=223occurred in iteration=4, InterpolantAutomatonStates: 82, 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, 12 MinimizatonAttempts, 456 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 630 NumberOfCodeBlocks, 612 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 702 ConstructedInterpolants, 2 QuantifiedInterpolants, 1106 SizeOfPredicates, 43 NumberOfNonLiveVariables, 1118 ConjunctsInSsa, 82 ConjunctsInUnsatCore, 18 InterpolantComputations, 11 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 19:46:35,417 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa465e3d-1159-4ac4-ac9d-3ad6841e9c90/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 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