./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/square_8+soft_float_3a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/square_8+soft_float_3a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba --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 98ed95c4a54f5ccebfa7d8542fee1c186675c886b13abb30be9edee4d8cb102c --- 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-b5237d8 [2022-11-22 02:27:45,342 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 02:27:45,344 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 02:27:45,362 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 02:27:45,365 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 02:27:45,368 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 02:27:45,371 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 02:27:45,374 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 02:27:45,376 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 02:27:45,382 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 02:27:45,383 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 02:27:45,385 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 02:27:45,386 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 02:27:45,391 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 02:27:45,394 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 02:27:45,396 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 02:27:45,398 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 02:27:45,399 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 02:27:45,400 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 02:27:45,407 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 02:27:45,408 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 02:27:45,410 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 02:27:45,412 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 02:27:45,413 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 02:27:45,423 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 02:27:45,423 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 02:27:45,423 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 02:27:45,425 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 02:27:45,426 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 02:27:45,427 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 02:27:45,428 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 02:27:45,430 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 02:27:45,432 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 02:27:45,433 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 02:27:45,434 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 02:27:45,435 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 02:27:45,435 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 02:27:45,436 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 02:27:45,436 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 02:27:45,438 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 02:27:45,439 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 02:27:45,440 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-22 02:27:45,476 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 02:27:45,480 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 02:27:45,481 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 02:27:45,482 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 02:27:45,483 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 02:27:45,483 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 02:27:45,483 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 02:27:45,483 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 02:27:45,484 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 02:27:45,484 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 02:27:45,485 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 02:27:45,485 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 02:27:45,486 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 02:27:45,486 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 02:27:45,486 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 02:27:45,487 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 02:27:45,487 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 02:27:45,487 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 02:27:45,488 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 02:27:45,488 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-22 02:27:45,488 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 02:27:45,488 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-22 02:27:45,489 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 02:27:45,489 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 02:27:45,489 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 02:27:45,489 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 02:27:45,490 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-22 02:27:45,490 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 02:27:45,491 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 02:27:45,491 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 02:27:45,491 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 02:27:45,491 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 02:27:45,492 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:27:45,492 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 02:27:45,492 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 02:27:45,492 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 02:27:45,492 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 02:27:45,493 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 02:27:45,493 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 02:27:45,493 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 02:27:45,493 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 02:27:45,493 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_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 98ed95c4a54f5ccebfa7d8542fee1c186675c886b13abb30be9edee4d8cb102c [2022-11-22 02:27:45,777 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 02:27:45,802 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 02:27:45,805 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 02:27:45,807 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 02:27:45,807 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 02:27:45,809 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/combinations/square_8+soft_float_3a.c.cil.c [2022-11-22 02:27:48,862 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 02:27:49,158 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 02:27:49,168 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/sv-benchmarks/c/combinations/square_8+soft_float_3a.c.cil.c [2022-11-22 02:27:49,177 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/data/a62565c77/d75a4d4e1a764e89b9eb7fadf1ceb65a/FLAG6e916183f [2022-11-22 02:27:49,197 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/data/a62565c77/d75a4d4e1a764e89b9eb7fadf1ceb65a [2022-11-22 02:27:49,202 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 02:27:49,204 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 02:27:49,208 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 02:27:49,208 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 02:27:49,212 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 02:27:49,213 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:27:49" (1/1) ... [2022-11-22 02:27:49,215 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@640f3ef1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:27:49, skipping insertion in model container [2022-11-22 02:27:49,215 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:27:49" (1/1) ... [2022-11-22 02:27:49,222 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 02:27:49,272 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 02:27:49,486 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_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/sv-benchmarks/c/combinations/square_8+soft_float_3a.c.cil.c[1995,2008] [2022-11-22 02:27:49,492 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_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/sv-benchmarks/c/combinations/square_8+soft_float_3a.c.cil.c[2364,2377] [2022-11-22 02:27:49,564 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:27:49,578 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 02:27:49,594 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_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/sv-benchmarks/c/combinations/square_8+soft_float_3a.c.cil.c[1995,2008] [2022-11-22 02:27:49,595 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_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/sv-benchmarks/c/combinations/square_8+soft_float_3a.c.cil.c[2364,2377] [2022-11-22 02:27:49,632 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:27:49,657 INFO L208 MainTranslator]: Completed translation [2022-11-22 02:27:49,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:27:49 WrapperNode [2022-11-22 02:27:49,658 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 02:27:49,658 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 02:27:49,659 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 02:27:49,659 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 02:27:49,667 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:27:49" (1/1) ... [2022-11-22 02:27:49,678 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:27:49" (1/1) ... [2022-11-22 02:27:49,712 INFO L138 Inliner]: procedures = 27, calls = 17, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 187 [2022-11-22 02:27:49,712 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 02:27:49,713 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 02:27:49,713 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 02:27:49,713 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 02:27:49,723 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:27:49" (1/1) ... [2022-11-22 02:27:49,724 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:27:49" (1/1) ... [2022-11-22 02:27:49,739 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:27:49" (1/1) ... [2022-11-22 02:27:49,740 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:27:49" (1/1) ... [2022-11-22 02:27:49,746 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:27:49" (1/1) ... [2022-11-22 02:27:49,751 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:27:49" (1/1) ... [2022-11-22 02:27:49,753 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:27:49" (1/1) ... [2022-11-22 02:27:49,755 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:27:49" (1/1) ... [2022-11-22 02:27:49,758 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 02:27:49,759 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 02:27:49,759 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 02:27:49,760 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 02:27:49,760 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:27:49" (1/1) ... [2022-11-22 02:27:49,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:27:49,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:27:49,792 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 02:27:49,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 02:27:49,851 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 02:27:49,852 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2022-11-22 02:27:49,852 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2022-11-22 02:27:49,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 02:27:49,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 02:27:49,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 02:27:49,853 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-22 02:27:49,853 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-22 02:27:49,930 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 02:27:49,932 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 02:27:50,459 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 02:27:50,806 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 02:27:50,806 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-22 02:27:50,808 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:27:50 BoogieIcfgContainer [2022-11-22 02:27:50,809 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 02:27:50,812 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 02:27:50,813 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 02:27:50,816 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 02:27:50,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:27:49" (1/3) ... [2022-11-22 02:27:50,817 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@625cd052 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:27:50, skipping insertion in model container [2022-11-22 02:27:50,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:27:49" (2/3) ... [2022-11-22 02:27:50,819 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@625cd052 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:27:50, skipping insertion in model container [2022-11-22 02:27:50,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:27:50" (3/3) ... [2022-11-22 02:27:50,821 INFO L112 eAbstractionObserver]: Analyzing ICFG square_8+soft_float_3a.c.cil.c [2022-11-22 02:27:50,841 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 02:27:50,842 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-22 02:27:50,904 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 02:27:50,913 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;@3a5b2d91, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 02:27:50,913 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-22 02:27:50,918 INFO L276 IsEmpty]: Start isEmpty. Operand has 45 states, 35 states have (on average 1.5714285714285714) internal successors, (55), 38 states have internal predecessors, (55), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-22 02:27:50,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-22 02:27:50,924 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:27:50,924 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-22 02:27:50,925 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:27:50,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:27:50,930 INFO L85 PathProgramCache]: Analyzing trace with hash 10071630, now seen corresponding path program 1 times [2022-11-22 02:27:50,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:27:50,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514762909] [2022-11-22 02:27:50,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:27:50,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:27:51,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-22 02:27:51,052 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-22 02:27:51,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-22 02:27:51,090 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-22 02:27:51,092 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-22 02:27:51,094 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-11-22 02:27:51,097 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-11-22 02:27:51,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 02:27:51,106 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-22 02:27:51,110 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-22 02:27:51,140 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 02:27:51 BoogieIcfgContainer [2022-11-22 02:27:51,140 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-22 02:27:51,144 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-22 02:27:51,144 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-22 02:27:51,145 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-22 02:27:51,145 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:27:50" (3/4) ... [2022-11-22 02:27:51,149 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-22 02:27:51,149 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-22 02:27:51,150 INFO L158 Benchmark]: Toolchain (without parser) took 1946.22ms. Allocated memory was 121.6MB in the beginning and 146.8MB in the end (delta: 25.2MB). Free memory was 77.2MB in the beginning and 68.6MB in the end (delta: 8.6MB). Peak memory consumption was 34.8MB. Max. memory is 16.1GB. [2022-11-22 02:27:51,151 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 121.6MB. Free memory is still 94.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-22 02:27:51,152 INFO L158 Benchmark]: CACSL2BoogieTranslator took 449.69ms. Allocated memory is still 121.6MB. Free memory was 76.9MB in the beginning and 62.6MB in the end (delta: 14.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-22 02:27:51,153 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.90ms. Allocated memory is still 121.6MB. Free memory was 62.6MB in the beginning and 60.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-22 02:27:51,159 INFO L158 Benchmark]: Boogie Preprocessor took 45.69ms. Allocated memory is still 121.6MB. Free memory was 60.5MB in the beginning and 58.8MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-22 02:27:51,162 INFO L158 Benchmark]: RCFGBuilder took 1049.66ms. Allocated memory was 121.6MB in the beginning and 146.8MB in the end (delta: 25.2MB). Free memory was 58.4MB in the beginning and 83.3MB in the end (delta: -24.9MB). Peak memory consumption was 15.9MB. Max. memory is 16.1GB. [2022-11-22 02:27:51,162 INFO L158 Benchmark]: TraceAbstraction took 327.68ms. Allocated memory is still 146.8MB. Free memory was 82.7MB in the beginning and 68.6MB in the end (delta: 14.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-22 02:27:51,162 INFO L158 Benchmark]: Witness Printer took 4.64ms. Allocated memory is still 146.8MB. Free memory is still 68.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-22 02:27:51,172 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 121.6MB. Free memory is still 94.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 449.69ms. Allocated memory is still 121.6MB. Free memory was 76.9MB in the beginning and 62.6MB in the end (delta: 14.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 53.90ms. Allocated memory is still 121.6MB. Free memory was 62.6MB in the beginning and 60.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 45.69ms. Allocated memory is still 121.6MB. Free memory was 60.5MB in the beginning and 58.8MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 1049.66ms. Allocated memory was 121.6MB in the beginning and 146.8MB in the end (delta: 25.2MB). Free memory was 58.4MB in the beginning and 83.3MB in the end (delta: -24.9MB). Peak memory consumption was 15.9MB. Max. memory is 16.1GB. * TraceAbstraction took 327.68ms. Allocated memory is still 146.8MB. Free memory was 82.7MB in the beginning and 68.6MB in the end (delta: 14.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Witness Printer took 4.64ms. Allocated memory is still 146.8MB. Free memory is still 68.6MB. There was no memory consumed. 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 - UnprovableResult [Line: 48]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 47, overapproximation of someBinaryArithmeticFLOAToperation at line 45. Possible FailurePath: [L320] COND TRUE __VERIFIER_nondet_int() [L321] CALL main1() [L39] float IN = __VERIFIER_nondet_float(); [L40] CALL assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L34] COND FALSE !(!cond) [L40] RET assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L42] float x = IN; [L44-L45] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; VAL [IN=53, x=53] [L47] COND TRUE !(result >= 0.0f && result < 1.5f) VAL [IN=53, x=53] [L48] reach_error() VAL [IN=53, x=53] - UnprovableResult [Line: 60]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 45 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 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 could not prove your program: unable to determine feasibility of some traces [2022-11-22 02:27:51,199 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/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 Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/square_8+soft_float_3a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba --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 98ed95c4a54f5ccebfa7d8542fee1c186675c886b13abb30be9edee4d8cb102c --- 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-b5237d8 [2022-11-22 02:27:53,665 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 02:27:53,668 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 02:27:53,704 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 02:27:53,705 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 02:27:53,706 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 02:27:53,707 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 02:27:53,709 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 02:27:53,711 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 02:27:53,712 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 02:27:53,713 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 02:27:53,714 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 02:27:53,715 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 02:27:53,716 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 02:27:53,717 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 02:27:53,719 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 02:27:53,720 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 02:27:53,721 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 02:27:53,722 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 02:27:53,725 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 02:27:53,726 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 02:27:53,728 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 02:27:53,729 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 02:27:53,730 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 02:27:53,734 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 02:27:53,735 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 02:27:53,735 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 02:27:53,736 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 02:27:53,736 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 02:27:53,738 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 02:27:53,738 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 02:27:53,739 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 02:27:53,740 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 02:27:53,740 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 02:27:53,742 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 02:27:53,742 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 02:27:53,743 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 02:27:53,743 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 02:27:53,743 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 02:27:53,744 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 02:27:53,745 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 02:27:53,746 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-11-22 02:27:53,771 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 02:27:53,772 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 02:27:53,772 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 02:27:53,772 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 02:27:53,773 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 02:27:53,773 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 02:27:53,773 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 02:27:53,774 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 02:27:53,774 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 02:27:53,774 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 02:27:53,774 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 02:27:53,774 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 02:27:53,775 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 02:27:53,775 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-22 02:27:53,776 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-22 02:27:53,776 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 02:27:53,776 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 02:27:53,776 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 02:27:53,777 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 02:27:53,777 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-22 02:27:53,777 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-22 02:27:53,777 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-22 02:27:53,777 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-22 02:27:53,778 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 02:27:53,778 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 02:27:53,778 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 02:27:53,778 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 02:27:53,778 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-22 02:27:53,779 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 02:27:53,779 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:27:53,779 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 02:27:53,779 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 02:27:53,780 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 02:27:53,780 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-22 02:27:53,780 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-22 02:27:53,780 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 02:27:53,780 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 02:27:53,781 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-22 02:27:53,781 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_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 98ed95c4a54f5ccebfa7d8542fee1c186675c886b13abb30be9edee4d8cb102c [2022-11-22 02:27:54,133 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 02:27:54,158 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 02:27:54,160 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 02:27:54,162 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 02:27:54,162 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 02:27:54,164 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/combinations/square_8+soft_float_3a.c.cil.c [2022-11-22 02:27:57,400 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 02:27:57,623 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 02:27:57,624 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/sv-benchmarks/c/combinations/square_8+soft_float_3a.c.cil.c [2022-11-22 02:27:57,632 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/data/8761ddb4e/fec360294297440db87f369be89ae1fe/FLAG1190ac59e [2022-11-22 02:27:57,651 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/data/8761ddb4e/fec360294297440db87f369be89ae1fe [2022-11-22 02:27:57,657 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 02:27:57,660 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 02:27:57,664 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 02:27:57,664 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 02:27:57,668 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 02:27:57,669 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:27:57" (1/1) ... [2022-11-22 02:27:57,670 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fd6aacf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:27:57, skipping insertion in model container [2022-11-22 02:27:57,670 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:27:57" (1/1) ... [2022-11-22 02:27:57,678 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 02:27:57,732 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 02:27:57,898 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_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/sv-benchmarks/c/combinations/square_8+soft_float_3a.c.cil.c[1995,2008] [2022-11-22 02:27:57,909 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_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/sv-benchmarks/c/combinations/square_8+soft_float_3a.c.cil.c[2364,2377] [2022-11-22 02:27:57,973 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:27:57,996 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 02:27:58,026 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_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/sv-benchmarks/c/combinations/square_8+soft_float_3a.c.cil.c[1995,2008] [2022-11-22 02:27:58,029 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_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/sv-benchmarks/c/combinations/square_8+soft_float_3a.c.cil.c[2364,2377] [2022-11-22 02:27:58,099 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:27:58,127 INFO L208 MainTranslator]: Completed translation [2022-11-22 02:27:58,128 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:27:58 WrapperNode [2022-11-22 02:27:58,128 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 02:27:58,129 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 02:27:58,130 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 02:27:58,130 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 02:27:58,137 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:27:58" (1/1) ... [2022-11-22 02:27:58,149 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:27:58" (1/1) ... [2022-11-22 02:27:58,172 INFO L138 Inliner]: procedures = 28, calls = 17, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 129 [2022-11-22 02:27:58,173 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 02:27:58,174 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 02:27:58,174 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 02:27:58,174 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 02:27:58,184 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:27:58" (1/1) ... [2022-11-22 02:27:58,185 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:27:58" (1/1) ... [2022-11-22 02:27:58,188 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:27:58" (1/1) ... [2022-11-22 02:27:58,189 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:27:58" (1/1) ... [2022-11-22 02:27:58,198 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:27:58" (1/1) ... [2022-11-22 02:27:58,203 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:27:58" (1/1) ... [2022-11-22 02:27:58,205 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:27:58" (1/1) ... [2022-11-22 02:27:58,206 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:27:58" (1/1) ... [2022-11-22 02:27:58,209 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 02:27:58,210 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 02:27:58,210 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 02:27:58,211 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 02:27:58,212 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:27:58" (1/1) ... [2022-11-22 02:27:58,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:27:58,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:27:58,246 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 02:27:58,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 02:27:58,306 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 02:27:58,307 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-22 02:27:58,307 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2022-11-22 02:27:58,307 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2022-11-22 02:27:58,307 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 02:27:58,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 02:27:58,308 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-22 02:27:58,308 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-22 02:27:58,439 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 02:27:58,442 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 02:28:01,046 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 02:28:01,054 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 02:28:01,054 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-22 02:28:01,057 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:28:01 BoogieIcfgContainer [2022-11-22 02:28:01,057 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 02:28:01,059 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 02:28:01,060 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 02:28:01,063 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 02:28:01,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:27:57" (1/3) ... [2022-11-22 02:28:01,064 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3816e2aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:28:01, skipping insertion in model container [2022-11-22 02:28:01,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:27:58" (2/3) ... [2022-11-22 02:28:01,065 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3816e2aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:28:01, skipping insertion in model container [2022-11-22 02:28:01,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:28:01" (3/3) ... [2022-11-22 02:28:01,067 INFO L112 eAbstractionObserver]: Analyzing ICFG square_8+soft_float_3a.c.cil.c [2022-11-22 02:28:01,088 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 02:28:01,088 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-22 02:28:01,139 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 02:28:01,146 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;@47bcddd2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 02:28:01,146 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-22 02:28:01,150 INFO L276 IsEmpty]: Start isEmpty. Operand has 60 states, 50 states have (on average 1.56) internal successors, (78), 53 states have internal predecessors, (78), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-22 02:28:01,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-22 02:28:01,157 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:28:01,158 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:28:01,159 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:28:01,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:28:01,164 INFO L85 PathProgramCache]: Analyzing trace with hash -548115930, now seen corresponding path program 1 times [2022-11-22 02:28:01,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 02:28:01,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1751696336] [2022-11-22 02:28:01,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:28:01,198 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 [2022-11-22 02:28:01,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 02:28:01,204 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/mathsat -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) [2022-11-22 02:28:01,225 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/mathsat -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 [2022-11-22 02:28:01,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:28:01,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-22 02:28:01,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:28:01,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:28:01,774 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:28:01,776 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 02:28:01,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1751696336] [2022-11-22 02:28:01,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1751696336] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:28:01,778 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:28:01,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 02:28:01,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466018801] [2022-11-22 02:28:01,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:28:01,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-22 02:28:01,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 02:28:01,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-22 02:28:01,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-22 02:28:01,830 INFO L87 Difference]: Start difference. First operand has 60 states, 50 states have (on average 1.56) internal successors, (78), 53 states have internal predecessors, (78), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:28:01,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:28:01,860 INFO L93 Difference]: Finished difference Result 115 states and 173 transitions. [2022-11-22 02:28:01,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-22 02:28:01,863 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-22 02:28:01,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:28:01,870 INFO L225 Difference]: With dead ends: 115 [2022-11-22 02:28:01,871 INFO L226 Difference]: Without dead ends: 51 [2022-11-22 02:28:01,874 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-22 02:28:01,878 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:28:01,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 02:28:01,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-11-22 02:28:01,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2022-11-22 02:28:01,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 43 states have (on average 1.4186046511627908) internal successors, (61), 44 states have internal predecessors, (61), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-22 02:28:01,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 70 transitions. [2022-11-22 02:28:01,922 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 70 transitions. Word has length 7 [2022-11-22 02:28:01,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:28:01,923 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 70 transitions. [2022-11-22 02:28:01,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:28:01,924 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 70 transitions. [2022-11-22 02:28:01,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-22 02:28:01,924 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:28:01,924 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:28:01,947 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/mathsat -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 [2022-11-22 02:28:02,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-22 02:28:02,132 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:28:02,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:28:02,133 INFO L85 PathProgramCache]: Analyzing trace with hash -548056348, now seen corresponding path program 1 times [2022-11-22 02:28:02,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 02:28:02,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1165316972] [2022-11-22 02:28:02,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:28:02,134 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 [2022-11-22 02:28:02,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 02:28:02,136 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/mathsat -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) [2022-11-22 02:28:02,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-22 02:29:58,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:29:58,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-22 02:29:58,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:30:13,493 WARN L837 $PredicateComparison]: unable to prove that (and (exists ((|ULTIMATE.start_main1_~IN~0#1| (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (and (fp.lt |ULTIMATE.start_main1_~IN~0#1| .cse0) (= (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse0 (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) |c_ULTIMATE.start_main1_~result~0#1|) (fp.geq |ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2022-11-22 02:30:46,714 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0))) (.cse2 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 8.0))) (.cse3 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 16.0))) (.cse4 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 128.0))) (.cse0 ((_ to_fp 8 24) roundNearestTiesToEven 1.0))) (or (exists ((|ULTIMATE.start_main1_~IN~0#1| (_ FloatingPoint 8 24))) (and (not (fp.lt (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven .cse1 |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse2 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse3 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse4 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) ((_ to_fp 8 24) roundNearestTiesToEven (/ 3.0 2.0)))) (fp.geq |ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24)) (fp.lt |ULTIMATE.start_main1_~IN~0#1| .cse0))) (exists ((|ULTIMATE.start_main1_~IN~0#1| (_ FloatingPoint 8 24))) (and (fp.geq |ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24)) (not (fp.geq (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven .cse1 |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse2 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse3 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse4 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (_ +zero 8 24))) (fp.lt |ULTIMATE.start_main1_~IN~0#1| .cse0))))) is different from false [2022-11-22 02:30:48,762 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0))) (.cse2 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 8.0))) (.cse3 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 16.0))) (.cse4 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 128.0))) (.cse0 ((_ to_fp 8 24) roundNearestTiesToEven 1.0))) (or (exists ((|ULTIMATE.start_main1_~IN~0#1| (_ FloatingPoint 8 24))) (and (not (fp.lt (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven .cse1 |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse2 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse3 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse4 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) ((_ to_fp 8 24) roundNearestTiesToEven (/ 3.0 2.0)))) (fp.geq |ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24)) (fp.lt |ULTIMATE.start_main1_~IN~0#1| .cse0))) (exists ((|ULTIMATE.start_main1_~IN~0#1| (_ FloatingPoint 8 24))) (and (fp.geq |ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24)) (not (fp.geq (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven .cse1 |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse2 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse3 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse4 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (_ +zero 8 24))) (fp.lt |ULTIMATE.start_main1_~IN~0#1| .cse0))))) is different from true [2022-11-22 02:30:48,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:30:48,763 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:30:48,763 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 02:30:48,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1165316972] [2022-11-22 02:30:48,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1165316972] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:30:48,764 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:30:48,764 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:30:48,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591577495] [2022-11-22 02:30:48,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:30:48,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-22 02:30:48,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 02:30:48,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-22 02:30:48,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=12, Unknown=3, NotChecked=14, Total=42 [2022-11-22 02:30:48,767 INFO L87 Difference]: Start difference. First operand 51 states and 70 transitions. Second operand has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:30:50,644 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-22 02:30:52,812 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (let ((.cse1 (fp.lt |c_ULTIMATE.start_main1_~IN~0#1| .cse0)) (.cse2 (fp.geq |c_ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24)))) (and (exists ((|ULTIMATE.start_main1_~IN~0#1| (_ FloatingPoint 8 24))) (and (fp.lt |ULTIMATE.start_main1_~IN~0#1| .cse0) (= (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse0 (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) |c_ULTIMATE.start_main1_~result~0#1|) (fp.geq |ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24)))) .cse1 (or (and (or (not .cse1) (not .cse2)) (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| (_ bv0 32))) (and .cse1 (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| (_ bv1 32)) .cse2)) .cse2 (= c_currentRoundingMode roundNearestTiesToEven)))) is different from false [2022-11-22 02:30:52,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:30:52,997 INFO L93 Difference]: Finished difference Result 51 states and 70 transitions. [2022-11-22 02:30:52,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 02:30:52,998 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-22 02:30:52,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:30:53,000 INFO L225 Difference]: With dead ends: 51 [2022-11-22 02:30:53,000 INFO L226 Difference]: Without dead ends: 46 [2022-11-22 02:30:53,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=20, Invalid=18, Unknown=4, NotChecked=30, Total=72 [2022-11-22 02:30:53,004 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 67 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 136 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-22 02:30:53,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 175 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 136 Unchecked, 1.8s Time] [2022-11-22 02:30:53,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-11-22 02:30:53,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2022-11-22 02:30:53,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 39 states have (on average 1.435897435897436) internal successors, (56), 39 states have internal predecessors, (56), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-22 02:30:53,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 65 transitions. [2022-11-22 02:30:53,016 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 65 transitions. Word has length 7 [2022-11-22 02:30:53,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:30:53,017 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 65 transitions. [2022-11-22 02:30:53,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:30:53,017 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 65 transitions. [2022-11-22 02:30:53,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-22 02:30:53,019 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:30:53,019 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:30:53,060 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-22 02:30:53,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-22 02:30:53,244 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:30:53,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:30:53,245 INFO L85 PathProgramCache]: Analyzing trace with hash 220430878, now seen corresponding path program 1 times [2022-11-22 02:30:53,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 02:30:53,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1344088088] [2022-11-22 02:30:53,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:30:53,246 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 [2022-11-22 02:30:53,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 02:30:53,248 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/mathsat -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) [2022-11-22 02:30:53,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-22 02:30:53,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:30:53,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-22 02:30:53,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:30:53,488 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-22 02:30:53,488 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:30:53,489 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 02:30:53,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1344088088] [2022-11-22 02:30:53,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1344088088] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:30:53,490 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:30:53,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 02:30:53,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242480896] [2022-11-22 02:30:53,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:30:53,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 02:30:53,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 02:30:53,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 02:30:53,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 02:30:53,492 INFO L87 Difference]: Start difference. First operand 46 states and 65 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-22 02:30:53,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:30:53,952 INFO L93 Difference]: Finished difference Result 102 states and 148 transitions. [2022-11-22 02:30:53,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 02:30:53,954 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 42 [2022-11-22 02:30:53,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:30:53,958 INFO L225 Difference]: With dead ends: 102 [2022-11-22 02:30:53,958 INFO L226 Difference]: Without dead ends: 60 [2022-11-22 02:30:53,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:30:53,960 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 16 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-22 02:30:53,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 143 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-22 02:30:53,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-11-22 02:30:53,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 51. [2022-11-22 02:30:53,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 43 states have (on average 1.3953488372093024) internal successors, (60), 43 states have internal predecessors, (60), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-22 02:30:53,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 71 transitions. [2022-11-22 02:30:53,975 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 71 transitions. Word has length 42 [2022-11-22 02:30:53,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:30:53,975 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 71 transitions. [2022-11-22 02:30:53,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-22 02:30:53,976 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 71 transitions. [2022-11-22 02:30:53,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-22 02:30:53,977 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:30:53,978 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2022-11-22 02:30:53,991 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-22 02:30:54,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-22 02:30:54,191 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:30:54,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:30:54,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1744233432, now seen corresponding path program 1 times [2022-11-22 02:30:54,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 02:30:54,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [882814881] [2022-11-22 02:30:54,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:30:54,193 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 [2022-11-22 02:30:54,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 02:30:54,195 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/mathsat -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) [2022-11-22 02:30:54,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/mathsat -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 [2022-11-22 02:30:54,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:30:54,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-22 02:30:54,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:30:54,475 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-22 02:30:54,476 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:30:54,476 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 02:30:54,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [882814881] [2022-11-22 02:30:54,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [882814881] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:30:54,477 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:30:54,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 02:30:54,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039623704] [2022-11-22 02:30:54,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:30:54,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 02:30:54,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 02:30:54,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 02:30:54,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 02:30:54,479 INFO L87 Difference]: Start difference. First operand 51 states and 71 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, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-22 02:30:54,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:30:54,883 INFO L93 Difference]: Finished difference Result 106 states and 151 transitions. [2022-11-22 02:30:54,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 02:30:54,884 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, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 45 [2022-11-22 02:30:54,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:30:54,885 INFO L225 Difference]: With dead ends: 106 [2022-11-22 02:30:54,885 INFO L226 Difference]: Without dead ends: 63 [2022-11-22 02:30:54,886 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:30:54,887 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 10 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 02:30:54,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 157 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 02:30:54,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-11-22 02:30:54,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 56. [2022-11-22 02:30:54,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 47 states have (on average 1.3829787234042554) internal successors, (65), 48 states have internal predecessors, (65), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-22 02:30:54,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 78 transitions. [2022-11-22 02:30:54,916 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 78 transitions. Word has length 45 [2022-11-22 02:30:54,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:30:54,919 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 78 transitions. [2022-11-22 02:30:54,920 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, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-22 02:30:54,921 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 78 transitions. [2022-11-22 02:30:54,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-22 02:30:54,926 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:30:54,926 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2022-11-22 02:30:54,944 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/mathsat -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 [2022-11-22 02:30:55,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-22 02:30:55,139 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:30:55,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:30:55,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1089123319, now seen corresponding path program 1 times [2022-11-22 02:30:55,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 02:30:55,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [467216925] [2022-11-22 02:30:55,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:30:55,141 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 [2022-11-22 02:30:55,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 02:30:55,142 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/mathsat -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) [2022-11-22 02:30:55,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/mathsat -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 [2022-11-22 02:30:55,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:30:55,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-22 02:30:55,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:30:55,396 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-22 02:30:55,397 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:30:55,397 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 02:30:55,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [467216925] [2022-11-22 02:30:55,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [467216925] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:30:55,398 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:30:55,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 02:30:55,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403085872] [2022-11-22 02:30:55,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:30:55,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 02:30:55,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 02:30:55,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 02:30:55,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 02:30:55,400 INFO L87 Difference]: Start difference. First operand 56 states and 78 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, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-22 02:30:55,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:30:55,826 INFO L93 Difference]: Finished difference Result 115 states and 163 transitions. [2022-11-22 02:30:55,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 02:30:55,827 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, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 46 [2022-11-22 02:30:55,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:30:55,829 INFO L225 Difference]: With dead ends: 115 [2022-11-22 02:30:55,829 INFO L226 Difference]: Without dead ends: 67 [2022-11-22 02:30:55,830 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:30:55,831 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 17 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-22 02:30:55,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 150 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-22 02:30:55,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-11-22 02:30:55,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 57. [2022-11-22 02:30:55,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 48 states have (on average 1.375) internal successors, (66), 49 states have internal predecessors, (66), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-22 02:30:55,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 79 transitions. [2022-11-22 02:30:55,846 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 79 transitions. Word has length 46 [2022-11-22 02:30:55,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:30:55,848 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 79 transitions. [2022-11-22 02:30:55,848 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, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-22 02:30:55,848 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 79 transitions. [2022-11-22 02:30:55,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-22 02:30:55,850 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:30:55,850 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2022-11-22 02:30:55,866 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/mathsat -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 [2022-11-22 02:30:56,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-22 02:30:56,056 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:30:56,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:30:56,056 INFO L85 PathProgramCache]: Analyzing trace with hash 957340839, now seen corresponding path program 1 times [2022-11-22 02:30:56,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 02:30:56,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [863365740] [2022-11-22 02:30:56,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:30:56,057 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 [2022-11-22 02:30:56,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 02:30:56,059 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/mathsat -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) [2022-11-22 02:30:56,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/mathsat -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 [2022-11-22 02:30:56,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:30:56,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-22 02:30:56,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:30:56,398 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-22 02:30:56,398 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:30:56,398 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 02:30:56,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [863365740] [2022-11-22 02:30:56,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [863365740] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:30:56,399 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:30:56,399 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:30:56,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300235022] [2022-11-22 02:30:56,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:30:56,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:30:56,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 02:30:56,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:30:56,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:30:56,401 INFO L87 Difference]: Start difference. First operand 57 states and 79 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-22 02:30:57,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:30:57,140 INFO L93 Difference]: Finished difference Result 123 states and 174 transitions. [2022-11-22 02:30:57,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 02:30:57,141 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 47 [2022-11-22 02:30:57,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:30:57,142 INFO L225 Difference]: With dead ends: 123 [2022-11-22 02:30:57,143 INFO L226 Difference]: Without dead ends: 74 [2022-11-22 02:30:57,143 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-22 02:30:57,144 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 19 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-22 02:30:57,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 198 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-22 02:30:57,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-11-22 02:30:57,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 58. [2022-11-22 02:30:57,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 49 states have (on average 1.3877551020408163) internal successors, (68), 50 states have internal predecessors, (68), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-22 02:30:57,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 81 transitions. [2022-11-22 02:30:57,156 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 81 transitions. Word has length 47 [2022-11-22 02:30:57,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:30:57,157 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 81 transitions. [2022-11-22 02:30:57,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-22 02:30:57,157 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 81 transitions. [2022-11-22 02:30:57,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-22 02:30:57,158 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:30:57,159 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2022-11-22 02:30:57,178 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/mathsat -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 [2022-11-22 02:30:57,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-22 02:30:57,373 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:30:57,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:30:57,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1066513524, now seen corresponding path program 1 times [2022-11-22 02:30:57,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 02:30:57,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [900591547] [2022-11-22 02:30:57,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:30:57,374 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 [2022-11-22 02:30:57,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 02:30:57,375 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/mathsat -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) [2022-11-22 02:30:57,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/mathsat -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 [2022-11-22 02:30:57,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:30:57,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-22 02:30:57,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:30:57,754 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 24 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-22 02:30:57,754 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:30:58,465 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-22 02:30:58,465 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 02:30:58,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [900591547] [2022-11-22 02:30:58,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [900591547] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:30:58,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1955596673] [2022-11-22 02:30:58,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:30:58,466 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-22 02:30:58,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/cvc4 [2022-11-22 02:30:58,473 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-22 02:30:58,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2022-11-22 02:30:58,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:30:58,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-22 02:30:58,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:30:58,662 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-22 02:30:58,662 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:30:58,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1955596673] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:30:58,663 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-22 02:30:58,663 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 5] total 9 [2022-11-22 02:30:58,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514228877] [2022-11-22 02:30:58,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:30:58,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:30:58,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 02:30:58,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:30:58,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-22 02:30:58,667 INFO L87 Difference]: Start difference. First operand 58 states and 81 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-22 02:30:58,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:30:58,703 INFO L93 Difference]: Finished difference Result 67 states and 91 transitions. [2022-11-22 02:30:58,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:30:58,704 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 48 [2022-11-22 02:30:58,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:30:58,706 INFO L225 Difference]: With dead ends: 67 [2022-11-22 02:30:58,706 INFO L226 Difference]: Without dead ends: 58 [2022-11-22 02:30:58,706 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-22 02:30:58,707 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 0 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:30:58,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 126 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 02:30:58,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2022-11-22 02:30:58,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2022-11-22 02:30:58,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 49 states have (on average 1.3673469387755102) internal successors, (67), 50 states have internal predecessors, (67), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-22 02:30:58,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 80 transitions. [2022-11-22 02:30:58,721 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 80 transitions. Word has length 48 [2022-11-22 02:30:58,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:30:58,721 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 80 transitions. [2022-11-22 02:30:58,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-22 02:30:58,722 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 80 transitions. [2022-11-22 02:30:58,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-22 02:30:58,724 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:30:58,725 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:30:58,744 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-22 02:30:58,931 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2022-11-22 02:30:59,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/mathsat -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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt [2022-11-22 02:30:59,130 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:30:59,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:30:59,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1967363502, now seen corresponding path program 1 times [2022-11-22 02:30:59,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 02:30:59,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1583808270] [2022-11-22 02:30:59,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:30:59,131 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 [2022-11-22 02:30:59,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 02:30:59,133 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/mathsat -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) [2022-11-22 02:30:59,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/mathsat -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 [2022-11-22 02:30:59,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:30:59,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-22 02:30:59,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:30:59,524 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 24 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-22 02:30:59,524 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:31:00,137 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-22 02:31:00,138 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 02:31:00,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1583808270] [2022-11-22 02:31:00,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1583808270] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:31:00,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [786327672] [2022-11-22 02:31:00,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:31:00,138 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-22 02:31:00,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/cvc4 [2022-11-22 02:31:00,143 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-22 02:31:00,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2022-11-22 02:31:00,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:31:00,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-22 02:31:00,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:31:00,462 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-22 02:31:00,462 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:31:00,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [786327672] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:31:00,463 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-22 02:31:00,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 10 [2022-11-22 02:31:00,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543388448] [2022-11-22 02:31:00,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:31:00,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 02:31:00,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 02:31:00,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 02:31:00,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-11-22 02:31:00,464 INFO L87 Difference]: Start difference. First operand 58 states and 80 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-22 02:31:00,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:31:00,597 INFO L93 Difference]: Finished difference Result 68 states and 91 transitions. [2022-11-22 02:31:00,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 02:31:00,600 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 50 [2022-11-22 02:31:00,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:31:00,602 INFO L225 Difference]: With dead ends: 68 [2022-11-22 02:31:00,602 INFO L226 Difference]: Without dead ends: 58 [2022-11-22 02:31:00,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-11-22 02:31:00,603 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 1 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:31:00,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 184 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 02:31:00,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2022-11-22 02:31:00,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2022-11-22 02:31:00,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 49 states have (on average 1.346938775510204) internal successors, (66), 50 states have internal predecessors, (66), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-22 02:31:00,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 79 transitions. [2022-11-22 02:31:00,612 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 79 transitions. Word has length 50 [2022-11-22 02:31:00,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:31:00,613 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 79 transitions. [2022-11-22 02:31:00,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-22 02:31:00,613 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 79 transitions. [2022-11-22 02:31:00,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-22 02:31:00,614 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:31:00,614 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:31:00,619 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2022-11-22 02:31:00,824 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/mathsat -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 [2022-11-22 02:31:01,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-22 02:31:01,016 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:31:01,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:31:01,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1518257168, now seen corresponding path program 1 times [2022-11-22 02:31:01,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 02:31:01,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1573783452] [2022-11-22 02:31:01,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:31:01,017 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 [2022-11-22 02:31:01,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 02:31:01,019 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/mathsat -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) [2022-11-22 02:31:01,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/mathsat -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 [2022-11-22 02:31:01,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:31:01,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-22 02:31:01,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:31:01,306 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 24 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-22 02:31:01,306 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:31:01,957 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-22 02:31:01,957 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 02:31:01,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1573783452] [2022-11-22 02:31:01,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1573783452] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:31:01,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1190578695] [2022-11-22 02:31:01,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:31:01,958 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-22 02:31:01,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/cvc4 [2022-11-22 02:31:01,972 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-22 02:31:01,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2022-11-22 02:31:02,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:31:02,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-22 02:31:02,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:31:02,576 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-22 02:31:02,576 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:31:02,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1190578695] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:31:02,577 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-22 02:31:02,577 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5, 5] total 12 [2022-11-22 02:31:02,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465653407] [2022-11-22 02:31:02,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:31:02,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 02:31:02,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 02:31:02,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 02:31:02,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-11-22 02:31:02,578 INFO L87 Difference]: Start difference. First operand 58 states and 79 transitions. Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-22 02:31:02,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:31:02,942 INFO L93 Difference]: Finished difference Result 98 states and 133 transitions. [2022-11-22 02:31:02,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:31:02,944 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 50 [2022-11-22 02:31:02,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:31:02,945 INFO L225 Difference]: With dead ends: 98 [2022-11-22 02:31:02,945 INFO L226 Difference]: Without dead ends: 77 [2022-11-22 02:31:02,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-11-22 02:31:02,946 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 15 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 02:31:02,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 283 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 02:31:02,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-11-22 02:31:02,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 67. [2022-11-22 02:31:02,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 56 states have (on average 1.3035714285714286) internal successors, (73), 58 states have internal predecessors, (73), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-22 02:31:02,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 91 transitions. [2022-11-22 02:31:02,958 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 91 transitions. Word has length 50 [2022-11-22 02:31:02,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:31:02,958 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 91 transitions. [2022-11-22 02:31:02,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-22 02:31:02,959 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 91 transitions. [2022-11-22 02:31:02,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-22 02:31:02,960 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:31:02,960 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:31:02,978 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/mathsat -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 [2022-11-22 02:31:03,179 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2022-11-22 02:31:03,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/mathsat -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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt [2022-11-22 02:31:03,378 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:31:03,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:31:03,378 INFO L85 PathProgramCache]: Analyzing trace with hash 931451154, now seen corresponding path program 1 times [2022-11-22 02:31:03,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 02:31:03,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1227812375] [2022-11-22 02:31:03,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:31:03,379 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 [2022-11-22 02:31:03,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 02:31:03,380 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/mathsat -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) [2022-11-22 02:31:03,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/mathsat -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 [2022-11-22 02:31:03,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:31:03,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-22 02:31:03,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:31:03,727 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 24 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-22 02:31:03,728 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:31:04,361 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-22 02:31:04,361 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 02:31:04,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1227812375] [2022-11-22 02:31:04,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1227812375] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:31:04,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1921993744] [2022-11-22 02:31:04,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:31:04,362 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-22 02:31:04,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/cvc4 [2022-11-22 02:31:04,364 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-22 02:31:04,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2022-11-22 02:31:04,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:31:04,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-22 02:31:04,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:31:05,172 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-22 02:31:05,173 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:31:05,584 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-22 02:31:05,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1921993744] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:31:05,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [100048132] [2022-11-22 02:31:05,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:31:05,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:31:05,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:31:05,589 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:31:05,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-22 02:31:05,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:31:05,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-22 02:31:05,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:31:05,829 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 24 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-22 02:31:05,829 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:31:06,272 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-22 02:31:06,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [100048132] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:31:06,273 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-22 02:31:06,273 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 6, 6, 5, 5] total 12 [2022-11-22 02:31:06,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46015944] [2022-11-22 02:31:06,273 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-22 02:31:06,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-22 02:31:06,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 02:31:06,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-22 02:31:06,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-11-22 02:31:06,275 INFO L87 Difference]: Start difference. First operand 67 states and 91 transitions. Second operand has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 11 states have internal predecessors, (68), 3 states have call successors, (9), 2 states have call predecessors, (9), 5 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-22 02:31:09,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:31:09,210 INFO L93 Difference]: Finished difference Result 186 states and 270 transitions. [2022-11-22 02:31:09,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-22 02:31:09,212 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 11 states have internal predecessors, (68), 3 states have call successors, (9), 2 states have call predecessors, (9), 5 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) Word has length 50 [2022-11-22 02:31:09,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:31:09,214 INFO L225 Difference]: With dead ends: 186 [2022-11-22 02:31:09,214 INFO L226 Difference]: Without dead ends: 127 [2022-11-22 02:31:09,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 286 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506 [2022-11-22 02:31:09,216 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 86 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-22 02:31:09,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 388 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-22 02:31:09,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2022-11-22 02:31:09,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 96. [2022-11-22 02:31:09,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 84 states have (on average 1.3452380952380953) internal successors, (113), 84 states have internal predecessors, (113), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (18), 8 states have call predecessors, (18), 5 states have call successors, (18) [2022-11-22 02:31:09,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 137 transitions. [2022-11-22 02:31:09,238 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 137 transitions. Word has length 50 [2022-11-22 02:31:09,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:31:09,239 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 137 transitions. [2022-11-22 02:31:09,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 11 states have internal predecessors, (68), 3 states have call successors, (9), 2 states have call predecessors, (9), 5 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-22 02:31:09,239 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 137 transitions. [2022-11-22 02:31:09,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-22 02:31:09,241 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:31:09,241 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:31:09,253 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-22 02:31:09,457 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/mathsat -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 [2022-11-22 02:31:09,650 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2022-11-22 02:31:09,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/mathsat -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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt [2022-11-22 02:31:09,849 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:31:09,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:31:09,849 INFO L85 PathProgramCache]: Analyzing trace with hash 1265138967, now seen corresponding path program 1 times [2022-11-22 02:31:09,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 02:31:09,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1125305335] [2022-11-22 02:31:09,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:31:09,850 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 [2022-11-22 02:31:09,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 02:31:09,851 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/mathsat -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) [2022-11-22 02:31:09,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-22 02:31:09,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:31:09,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-22 02:31:09,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:31:10,246 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-22 02:31:10,247 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:31:11,070 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-22 02:31:11,070 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 02:31:11,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1125305335] [2022-11-22 02:31:11,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1125305335] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:31:11,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [690203439] [2022-11-22 02:31:11,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:31:11,071 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-22 02:31:11,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/cvc4 [2022-11-22 02:31:11,073 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-22 02:31:11,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2022-11-22 02:31:11,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:31:11,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-22 02:31:11,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:31:11,631 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-22 02:31:11,632 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:31:11,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [690203439] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:31:11,632 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-22 02:31:11,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 6] total 13 [2022-11-22 02:31:11,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807107271] [2022-11-22 02:31:11,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:31:11,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:31:11,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 02:31:11,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:31:11,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2022-11-22 02:31:11,634 INFO L87 Difference]: Start difference. First operand 96 states and 137 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-22 02:31:12,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:31:12,020 INFO L93 Difference]: Finished difference Result 119 states and 161 transitions. [2022-11-22 02:31:12,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 02:31:12,021 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 54 [2022-11-22 02:31:12,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:31:12,023 INFO L225 Difference]: With dead ends: 119 [2022-11-22 02:31:12,023 INFO L226 Difference]: Without dead ends: 113 [2022-11-22 02:31:12,024 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2022-11-22 02:31:12,025 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 22 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 02:31:12,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 229 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 02:31:12,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2022-11-22 02:31:12,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 111. [2022-11-22 02:31:12,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 99 states have (on average 1.303030303030303) internal successors, (129), 99 states have internal predecessors, (129), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (18), 8 states have call predecessors, (18), 5 states have call successors, (18) [2022-11-22 02:31:12,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 153 transitions. [2022-11-22 02:31:12,042 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 153 transitions. Word has length 54 [2022-11-22 02:31:12,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:31:12,043 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 153 transitions. [2022-11-22 02:31:12,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-22 02:31:12,043 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 153 transitions. [2022-11-22 02:31:12,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-22 02:31:12,045 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:31:12,045 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:31:12,058 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Ended with exit code 0 [2022-11-22 02:31:12,257 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (18)] Forceful destruction successful, exit code 0 [2022-11-22 02:31:12,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt [2022-11-22 02:31:12,456 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:31:12,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:31:12,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1322397269, now seen corresponding path program 1 times [2022-11-22 02:31:12,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 02:31:12,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1195952519] [2022-11-22 02:31:12,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:31:12,457 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 [2022-11-22 02:31:12,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 02:31:12,458 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/mathsat -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) [2022-11-22 02:31:12,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-22 02:31:12,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:31:12,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-22 02:31:12,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:31:12,869 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-22 02:31:12,870 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:31:13,618 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-22 02:31:13,619 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 02:31:13,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1195952519] [2022-11-22 02:31:13,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1195952519] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:31:13,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1765259372] [2022-11-22 02:31:13,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:31:13,619 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-22 02:31:13,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/cvc4 [2022-11-22 02:31:13,621 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-22 02:31:13,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2022-11-22 02:31:13,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:31:13,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-22 02:31:13,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:31:13,924 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-22 02:31:13,924 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:31:14,308 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-22 02:31:14,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1765259372] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:31:14,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [328462765] [2022-11-22 02:31:14,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:31:14,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:31:14,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:31:14,310 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:31:14,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-22 02:31:14,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:31:14,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-22 02:31:14,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:31:15,112 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-22 02:31:15,112 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:31:15,540 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-22 02:31:15,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [328462765] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-22 02:31:15,541 INFO L184 FreeRefinementEngine]: Found 1 perfect and 5 imperfect interpolant sequences. [2022-11-22 02:31:15,541 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6, 6, 6, 8] total 17 [2022-11-22 02:31:15,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275535936] [2022-11-22 02:31:15,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:31:15,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 02:31:15,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 02:31:15,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 02:31:15,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2022-11-22 02:31:15,545 INFO L87 Difference]: Start difference. First operand 111 states and 153 transitions. Second operand has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-22 02:31:15,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:31:15,885 INFO L93 Difference]: Finished difference Result 117 states and 158 transitions. [2022-11-22 02:31:15,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:31:15,886 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 54 [2022-11-22 02:31:15,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:31:15,887 INFO L225 Difference]: With dead ends: 117 [2022-11-22 02:31:15,887 INFO L226 Difference]: Without dead ends: 100 [2022-11-22 02:31:15,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 303 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2022-11-22 02:31:15,889 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 2 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:31:15,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 295 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 02:31:15,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-11-22 02:31:15,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2022-11-22 02:31:15,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 88 states have (on average 1.2954545454545454) internal successors, (114), 89 states have internal predecessors, (114), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (15), 7 states have call predecessors, (15), 5 states have call successors, (15) [2022-11-22 02:31:15,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 135 transitions. [2022-11-22 02:31:15,904 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 135 transitions. Word has length 54 [2022-11-22 02:31:15,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:31:15,904 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 135 transitions. [2022-11-22 02:31:15,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-22 02:31:15,905 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 135 transitions. [2022-11-22 02:31:15,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-22 02:31:15,906 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:31:15,906 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:31:15,917 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-22 02:31:16,121 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-22 02:31:16,315 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (20)] Forceful destruction successful, exit code 0 [2022-11-22 02:31:16,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt [2022-11-22 02:31:16,513 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:31:16,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:31:16,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1182884870, now seen corresponding path program 1 times [2022-11-22 02:31:16,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 02:31:16,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [381468104] [2022-11-22 02:31:16,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:31:16,514 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 [2022-11-22 02:31:16,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 02:31:16,515 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/mathsat -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) [2022-11-22 02:31:16,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-22 02:31:16,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:31:16,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-22 02:31:16,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:31:16,981 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 26 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-22 02:31:16,981 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:31:17,781 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-22 02:31:17,781 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 02:31:17,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [381468104] [2022-11-22 02:31:17,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [381468104] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:31:17,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2076898769] [2022-11-22 02:31:17,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:31:17,782 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-22 02:31:17,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/cvc4 [2022-11-22 02:31:17,784 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-22 02:31:17,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2022-11-22 02:31:17,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:31:17,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-22 02:31:17,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:31:18,073 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 26 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-22 02:31:18,074 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:31:18,515 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-22 02:31:18,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2076898769] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:31:18,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1300098320] [2022-11-22 02:31:18,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:31:18,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:31:18,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:31:18,520 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:31:18,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-11-22 02:31:18,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:31:18,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-22 02:31:18,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:31:19,143 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 26 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-22 02:31:19,143 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:31:19,831 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-22 02:31:19,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1300098320] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:31:19,832 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-22 02:31:19,832 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 7, 7] total 15 [2022-11-22 02:31:19,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605002302] [2022-11-22 02:31:19,833 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-22 02:31:19,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-22 02:31:19,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 02:31:19,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-22 02:31:19,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2022-11-22 02:31:19,834 INFO L87 Difference]: Start difference. First operand 100 states and 135 transitions. Second operand has 15 states, 15 states have (on average 4.933333333333334) internal successors, (74), 15 states have internal predecessors, (74), 2 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-22 02:31:22,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:31:22,111 INFO L93 Difference]: Finished difference Result 224 states and 309 transitions. [2022-11-22 02:31:22,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-22 02:31:22,112 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.933333333333334) internal successors, (74), 15 states have internal predecessors, (74), 2 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 56 [2022-11-22 02:31:22,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:31:22,114 INFO L225 Difference]: With dead ends: 224 [2022-11-22 02:31:22,114 INFO L226 Difference]: Without dead ends: 132 [2022-11-22 02:31:22,115 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 320 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=157, Invalid=263, Unknown=0, NotChecked=0, Total=420 [2022-11-22 02:31:22,118 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 118 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-22 02:31:22,119 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 423 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-22 02:31:22,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2022-11-22 02:31:22,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 104. [2022-11-22 02:31:22,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 92 states have (on average 1.315217391304348) internal successors, (121), 93 states have internal predecessors, (121), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (15), 7 states have call predecessors, (15), 5 states have call successors, (15) [2022-11-22 02:31:22,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 142 transitions. [2022-11-22 02:31:22,157 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 142 transitions. Word has length 56 [2022-11-22 02:31:22,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:31:22,158 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 142 transitions. [2022-11-22 02:31:22,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.933333333333334) internal successors, (74), 15 states have internal predecessors, (74), 2 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-22 02:31:22,159 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 142 transitions. [2022-11-22 02:31:22,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-22 02:31:22,160 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:31:22,160 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:31:22,167 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (23)] Forceful destruction successful, exit code 0 [2022-11-22 02:31:22,371 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Ended with exit code 0 [2022-11-22 02:31:22,567 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2022-11-22 02:31:22,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:31:22,763 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:31:22,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:31:22,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1175617949, now seen corresponding path program 1 times [2022-11-22 02:31:22,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 02:31:22,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1687118147] [2022-11-22 02:31:22,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:31:22,765 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 [2022-11-22 02:31:22,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 02:31:22,766 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/mathsat -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) [2022-11-22 02:31:22,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-11-22 02:31:22,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:31:22,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-22 02:31:22,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:31:23,452 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 25 proven. 26 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-22 02:31:23,452 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:31:24,906 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 4 proven. 35 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-22 02:31:24,907 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 02:31:24,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1687118147] [2022-11-22 02:31:24,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1687118147] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:31:24,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [484890695] [2022-11-22 02:31:24,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:31:24,908 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-22 02:31:24,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/cvc4 [2022-11-22 02:31:24,909 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-22 02:31:24,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2022-11-22 02:31:25,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:31:25,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-22 02:31:25,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:31:25,304 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 25 proven. 26 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-22 02:31:25,305 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:31:25,998 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 4 proven. 35 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-22 02:31:25,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [484890695] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:31:25,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [381630775] [2022-11-22 02:31:25,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:31:25,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:31:25,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:31:26,004 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:31:26,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-11-22 02:31:26,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:31:26,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-22 02:31:26,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:31:26,754 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 25 proven. 26 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-22 02:31:26,754 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:31:28,481 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 4 proven. 35 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-22 02:31:28,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [381630775] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:31:28,482 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-22 02:31:28,482 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 8] total 20 [2022-11-22 02:31:28,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569640009] [2022-11-22 02:31:28,482 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-22 02:31:28,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-22 02:31:28,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 02:31:28,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-22 02:31:28,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=248, Unknown=0, NotChecked=0, Total=380 [2022-11-22 02:31:28,485 INFO L87 Difference]: Start difference. First operand 104 states and 142 transitions. Second operand has 20 states, 20 states have (on average 4.75) internal successors, (95), 20 states have internal predecessors, (95), 2 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-22 02:31:33,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:31:33,595 INFO L93 Difference]: Finished difference Result 271 states and 386 transitions. [2022-11-22 02:31:33,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-22 02:31:33,597 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.75) internal successors, (95), 20 states have internal predecessors, (95), 2 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 63 [2022-11-22 02:31:33,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:31:33,599 INFO L225 Difference]: With dead ends: 271 [2022-11-22 02:31:33,599 INFO L226 Difference]: Without dead ends: 175 [2022-11-22 02:31:33,600 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 364 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=316, Invalid=554, Unknown=0, NotChecked=0, Total=870 [2022-11-22 02:31:33,601 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 237 mSDsluCounter, 567 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 648 SdHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-22 02:31:33,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 648 Invalid, 428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 383 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-22 02:31:33,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2022-11-22 02:31:33,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 118. [2022-11-22 02:31:33,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 106 states have (on average 1.3584905660377358) internal successors, (144), 107 states have internal predecessors, (144), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (15), 7 states have call predecessors, (15), 5 states have call successors, (15) [2022-11-22 02:31:33,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 165 transitions. [2022-11-22 02:31:33,626 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 165 transitions. Word has length 63 [2022-11-22 02:31:33,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:31:33,627 INFO L495 AbstractCegarLoop]: Abstraction has 118 states and 165 transitions. [2022-11-22 02:31:33,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.75) internal successors, (95), 20 states have internal predecessors, (95), 2 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-22 02:31:33,627 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 165 transitions. [2022-11-22 02:31:33,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-22 02:31:33,629 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:31:33,629 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:31:33,636 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-11-22 02:31:33,837 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (26)] Ended with exit code 0 [2022-11-22 02:31:34,045 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Ended with exit code 0 [2022-11-22 02:31:34,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-22 02:31:34,236 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:31:34,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:31:34,237 INFO L85 PathProgramCache]: Analyzing trace with hash 369916166, now seen corresponding path program 2 times [2022-11-22 02:31:34,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 02:31:34,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [58354093] [2022-11-22 02:31:34,237 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-22 02:31:34,237 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 [2022-11-22 02:31:34,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 02:31:34,239 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/mathsat -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) [2022-11-22 02:31:34,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-11-22 02:31:34,300 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-22 02:31:34,300 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 02:31:34,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-22 02:31:34,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:31:35,137 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 26 proven. 45 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-22 02:31:35,137 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:31:36,862 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 4 proven. 55 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-22 02:31:36,862 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 02:31:36,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [58354093] [2022-11-22 02:31:36,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [58354093] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:31:36,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1866210417] [2022-11-22 02:31:36,863 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-22 02:31:36,864 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-22 02:31:36,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/cvc4 [2022-11-22 02:31:36,865 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-22 02:31:36,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (29)] Waiting until timeout for monitored process [2022-11-22 02:31:37,009 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-22 02:31:37,009 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 02:31:37,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-22 02:31:37,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:31:37,330 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 26 proven. 45 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-22 02:31:37,330 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:31:38,085 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 4 proven. 55 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-22 02:31:38,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1866210417] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:31:38,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1867035483] [2022-11-22 02:31:38,086 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-22 02:31:38,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:31:38,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:31:38,088 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:31:38,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-11-22 02:31:38,165 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-22 02:31:38,165 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 02:31:38,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-22 02:31:38,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:31:38,984 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 26 proven. 45 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-22 02:31:38,984 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:31:41,131 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 4 proven. 55 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-22 02:31:41,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1867035483] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:31:41,132 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-22 02:31:41,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10, 11, 11] total 27 [2022-11-22 02:31:41,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401946472] [2022-11-22 02:31:41,132 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-22 02:31:41,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-22 02:31:41,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 02:31:41,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-22 02:31:41,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=469, Unknown=0, NotChecked=0, Total=702 [2022-11-22 02:31:41,135 INFO L87 Difference]: Start difference. First operand 118 states and 165 transitions. Second operand has 27 states, 27 states have (on average 4.074074074074074) internal successors, (110), 27 states have internal predecessors, (110), 2 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-22 02:31:46,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:31:46,390 INFO L93 Difference]: Finished difference Result 294 states and 417 transitions. [2022-11-22 02:31:46,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-22 02:31:46,392 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.074074074074074) internal successors, (110), 27 states have internal predecessors, (110), 2 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 68 [2022-11-22 02:31:46,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:31:46,394 INFO L225 Difference]: With dead ends: 294 [2022-11-22 02:31:46,394 INFO L226 Difference]: Without dead ends: 184 [2022-11-22 02:31:46,395 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 423 GetRequests, 384 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 293 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=581, Invalid=1059, Unknown=0, NotChecked=0, Total=1640 [2022-11-22 02:31:46,396 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 467 mSDsluCounter, 626 mSDsCounter, 0 mSdLazyCounter, 465 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 467 SdHoareTripleChecker+Valid, 686 SdHoareTripleChecker+Invalid, 561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-22 02:31:46,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [467 Valid, 686 Invalid, 561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 465 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-22 02:31:46,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2022-11-22 02:31:46,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 128. [2022-11-22 02:31:46,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 116 states have (on average 1.3879310344827587) internal successors, (161), 117 states have internal predecessors, (161), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (15), 7 states have call predecessors, (15), 5 states have call successors, (15) [2022-11-22 02:31:46,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 182 transitions. [2022-11-22 02:31:46,422 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 182 transitions. Word has length 68 [2022-11-22 02:31:46,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:31:46,422 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 182 transitions. [2022-11-22 02:31:46,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.074074074074074) internal successors, (110), 27 states have internal predecessors, (110), 2 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-22 02:31:46,423 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 182 transitions. [2022-11-22 02:31:46,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-22 02:31:46,424 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:31:46,425 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:31:46,440 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-11-22 02:31:46,641 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (29)] Ended with exit code 0 [2022-11-22 02:31:46,845 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-11-22 02:31:47,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:31:47,040 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:31:47,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:31:47,040 INFO L85 PathProgramCache]: Analyzing trace with hash -542294301, now seen corresponding path program 2 times [2022-11-22 02:31:47,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 02:31:47,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1879867089] [2022-11-22 02:31:47,041 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-22 02:31:47,041 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 [2022-11-22 02:31:47,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 02:31:47,042 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/mathsat -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) [2022-11-22 02:31:47,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-11-22 02:31:47,115 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-22 02:31:47,115 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 02:31:47,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-22 02:31:47,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:31:48,766 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 25 proven. 155 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-22 02:31:48,767 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:31:52,307 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 4 proven. 164 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-22 02:31:52,307 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 02:31:52,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1879867089] [2022-11-22 02:31:52,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1879867089] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:31:52,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2103904002] [2022-11-22 02:31:52,307 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-22 02:31:52,308 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-22 02:31:52,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/cvc4 [2022-11-22 02:31:52,318 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-22 02:31:52,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (32)] Waiting until timeout for monitored process [2022-11-22 02:31:52,440 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-22 02:31:52,440 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 02:31:52,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-22 02:31:52,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:31:52,926 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 25 proven. 155 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-22 02:31:52,926 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:31:54,173 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 4 proven. 164 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-22 02:31:54,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2103904002] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:31:54,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [340471515] [2022-11-22 02:31:54,174 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-22 02:31:54,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:31:54,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:31:54,175 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:31:54,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-11-22 02:31:54,244 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-22 02:31:54,244 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 02:31:54,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-22 02:31:54,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:31:55,271 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 25 proven. 155 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-22 02:31:55,271 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:32:00,876 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 4 proven. 164 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-22 02:32:00,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [340471515] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:32:00,877 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-22 02:32:00,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14, 14, 14, 14] total 38 [2022-11-22 02:32:00,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031619404] [2022-11-22 02:32:00,877 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-22 02:32:00,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-11-22 02:32:00,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 02:32:00,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-11-22 02:32:00,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=447, Invalid=959, Unknown=0, NotChecked=0, Total=1406 [2022-11-22 02:32:00,880 INFO L87 Difference]: Start difference. First operand 128 states and 182 transitions. Second operand has 38 states, 38 states have (on average 3.9210526315789473) internal successors, (149), 38 states have internal predecessors, (149), 2 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-22 02:32:18,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:32:18,962 INFO L93 Difference]: Finished difference Result 397 states and 586 transitions. [2022-11-22 02:32:18,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-22 02:32:18,964 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.9210526315789473) internal successors, (149), 38 states have internal predecessors, (149), 2 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 81 [2022-11-22 02:32:18,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:32:18,967 INFO L225 Difference]: With dead ends: 397 [2022-11-22 02:32:18,967 INFO L226 Difference]: Without dead ends: 277 [2022-11-22 02:32:18,969 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 524 GetRequests, 466 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 530 ImplicationChecksByTransitivity, 15.6s TimeCoverageRelationStatistics Valid=1210, Invalid=2330, Unknown=0, NotChecked=0, Total=3540 [2022-11-22 02:32:18,970 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 804 mSDsluCounter, 1644 mSDsCounter, 0 mSdLazyCounter, 1295 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 804 SdHoareTripleChecker+Valid, 1767 SdHoareTripleChecker+Invalid, 1456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 1295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:32:18,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [804 Valid, 1767 Invalid, 1456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 1295 Invalid, 0 Unknown, 0 Unchecked, 10.0s Time] [2022-11-22 02:32:18,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2022-11-22 02:32:19,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 154. [2022-11-22 02:32:19,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 142 states have (on average 1.4366197183098592) internal successors, (204), 143 states have internal predecessors, (204), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (15), 7 states have call predecessors, (15), 5 states have call successors, (15) [2022-11-22 02:32:19,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 225 transitions. [2022-11-22 02:32:19,005 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 225 transitions. Word has length 81 [2022-11-22 02:32:19,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:32:19,006 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 225 transitions. [2022-11-22 02:32:19,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.9210526315789473) internal successors, (149), 38 states have internal predecessors, (149), 2 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-22 02:32:19,006 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 225 transitions. [2022-11-22 02:32:19,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-22 02:32:19,008 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:32:19,008 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 13, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:32:19,015 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-11-22 02:32:19,223 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (32)] Forceful destruction successful, exit code 0 [2022-11-22 02:32:19,435 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2022-11-22 02:32:19,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-22 02:32:19,616 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:32:19,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:32:19,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1098654470, now seen corresponding path program 3 times [2022-11-22 02:32:19,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 02:32:19,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1416566679] [2022-11-22 02:32:19,617 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-22 02:32:19,617 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-22 02:32:19,617 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 02:32:19,619 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/mathsat -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) [2022-11-22 02:32:19,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2022-11-22 02:32:19,763 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2022-11-22 02:32:19,763 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 02:32:19,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-22 02:32:19,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:32:25,520 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 10 proven. 283 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-22 02:32:25,520 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:32:36,729 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 10 proven. 283 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-22 02:32:36,730 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 02:32:36,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1416566679] [2022-11-22 02:32:36,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1416566679] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:32:36,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1263498016] [2022-11-22 02:32:36,730 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-22 02:32:36,730 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-22 02:32:36,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/cvc4 [2022-11-22 02:32:36,732 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-22 02:32:36,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (35)] Waiting until timeout for monitored process [2022-11-22 02:32:36,920 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2022-11-22 02:32:36,920 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 02:32:36,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-22 02:32:36,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:32:54,684 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 10 proven. 283 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-22 02:32:54,685 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:32:58,637 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 10 proven. 283 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-22 02:32:58,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1263498016] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:32:58,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2095710060] [2022-11-22 02:32:58,638 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-22 02:32:58,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:32:58,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:32:58,639 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:32:58,645 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-11-22 02:32:58,785 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2022-11-22 02:32:58,785 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 02:32:58,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-22 02:32:58,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:33:09,108 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 26 proven. 273 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-22 02:33:09,108 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:33:22,288 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 4 proven. 283 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-22 02:33:22,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2095710060] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:33:22,289 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-22 02:33:22,289 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 25, 25, 19, 19] total 90 [2022-11-22 02:33:22,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896269010] [2022-11-22 02:33:22,289 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-22 02:33:22,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 90 states [2022-11-22 02:33:22,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 02:33:22,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2022-11-22 02:33:22,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=780, Invalid=7224, Unknown=6, NotChecked=0, Total=8010 [2022-11-22 02:33:22,293 INFO L87 Difference]: Start difference. First operand 154 states and 225 transitions. Second operand has 90 states, 90 states have (on average 2.977777777777778) internal successors, (268), 84 states have internal predecessors, (268), 5 states have call successors, (13), 2 states have call predecessors, (13), 8 states have return successors, (16), 11 states have call predecessors, (16), 5 states have call successors, (16) [2022-11-22 02:35:30,576 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:38:51,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:38:51,373 INFO L93 Difference]: Finished difference Result 744 states and 1377 transitions. [2022-11-22 02:38:51,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 257 states. [2022-11-22 02:38:51,377 INFO L78 Accepts]: Start accepts. Automaton has has 90 states, 90 states have (on average 2.977777777777778) internal successors, (268), 84 states have internal predecessors, (268), 5 states have call successors, (13), 2 states have call predecessors, (13), 8 states have return successors, (16), 11 states have call predecessors, (16), 5 states have call successors, (16) Word has length 92 [2022-11-22 02:38:51,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:38:51,384 INFO L225 Difference]: With dead ends: 744 [2022-11-22 02:38:51,399 INFO L226 Difference]: Without dead ends: 592 [2022-11-22 02:38:51,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 811 GetRequests, 472 SyntacticMatches, 3 SemanticMatches, 336 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39720 ImplicationChecksByTransitivity, 304.0s TimeCoverageRelationStatistics Valid=16680, Invalid=97219, Unknown=7, NotChecked=0, Total=113906 [2022-11-22 02:38:51,448 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 6068 mSDsluCounter, 4695 mSDsCounter, 0 mSdLazyCounter, 11036 mSolverCounterSat, 713 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 72.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6119 SdHoareTripleChecker+Valid, 4812 SdHoareTripleChecker+Invalid, 11750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 713 IncrementalHoareTripleChecker+Valid, 11036 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 75.2s IncrementalHoareTripleChecker+Time [2022-11-22 02:38:51,448 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6119 Valid, 4812 Invalid, 11750 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [713 Valid, 11036 Invalid, 1 Unknown, 0 Unchecked, 75.2s Time] [2022-11-22 02:38:51,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2022-11-22 02:38:51,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 184. [2022-11-22 02:38:51,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 169 states have (on average 1.455621301775148) internal successors, (246), 171 states have internal predecessors, (246), 8 states have call successors, (8), 3 states have call predecessors, (8), 6 states have return successors, (28), 9 states have call predecessors, (28), 7 states have call successors, (28) [2022-11-22 02:38:51,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 282 transitions. [2022-11-22 02:38:51,666 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 282 transitions. Word has length 92 [2022-11-22 02:38:51,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:38:51,666 INFO L495 AbstractCegarLoop]: Abstraction has 184 states and 282 transitions. [2022-11-22 02:38:51,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 90 states, 90 states have (on average 2.977777777777778) internal successors, (268), 84 states have internal predecessors, (268), 5 states have call successors, (13), 2 states have call predecessors, (13), 8 states have return successors, (16), 11 states have call predecessors, (16), 5 states have call successors, (16) [2022-11-22 02:38:51,667 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 282 transitions. [2022-11-22 02:38:51,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-11-22 02:38:51,668 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:38:51,668 INFO L195 NwaCegarLoop]: trace histogram [23, 22, 22, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:38:51,675 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2022-11-22 02:38:51,877 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (35)] Forceful destruction successful, exit code 0 [2022-11-22 02:38:52,084 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Ended with exit code 0 [2022-11-22 02:38:52,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-22 02:38:52,276 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:38:52,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:38:52,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1995923427, now seen corresponding path program 3 times [2022-11-22 02:38:52,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 02:38:52,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1286004281] [2022-11-22 02:38:52,277 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-22 02:38:52,277 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 [2022-11-22 02:38:52,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 02:38:52,278 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/mathsat -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) [2022-11-22 02:38:52,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2022-11-22 02:38:52,438 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 26 check-sat command(s) [2022-11-22 02:38:52,438 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 02:38:52,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-22 02:38:52,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:38:58,175 INFO L134 CoverageAnalysis]: Checked inductivity of 768 backedges. 25 proven. 737 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-22 02:38:58,175 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:39:14,256 INFO L134 CoverageAnalysis]: Checked inductivity of 768 backedges. 4 proven. 746 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-22 02:39:14,257 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 02:39:14,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1286004281] [2022-11-22 02:39:14,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1286004281] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:39:14,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1941792083] [2022-11-22 02:39:14,257 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-22 02:39:14,257 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-22 02:39:14,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/cvc4 [2022-11-22 02:39:14,258 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-22 02:39:14,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (38)] Waiting until timeout for monitored process [2022-11-22 02:39:14,511 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 26 check-sat command(s) [2022-11-22 02:39:14,511 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 02:39:14,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-22 02:39:14,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:39:17,257 INFO L134 CoverageAnalysis]: Checked inductivity of 768 backedges. 25 proven. 737 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-22 02:39:17,257 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:39:21,077 INFO L134 CoverageAnalysis]: Checked inductivity of 768 backedges. 4 proven. 746 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-22 02:39:21,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1941792083] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:39:21,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [476276713] [2022-11-22 02:39:21,077 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-22 02:39:21,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:39:21,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:39:21,079 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:39:21,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-11-22 02:39:21,261 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 26 check-sat command(s) [2022-11-22 02:39:21,261 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 02:39:21,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-22 02:39:21,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:39:22,761 INFO L134 CoverageAnalysis]: Checked inductivity of 768 backedges. 25 proven. 737 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-22 02:39:22,761 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:39:26,608 INFO L134 CoverageAnalysis]: Checked inductivity of 768 backedges. 4 proven. 746 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-22 02:39:26,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [476276713] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:39:26,609 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-22 02:39:26,609 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26, 26, 26, 26] total 54 [2022-11-22 02:39:26,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015866845] [2022-11-22 02:39:26,609 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-22 02:39:26,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-11-22 02:39:26,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 02:39:26,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-11-22 02:39:26,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=777, Invalid=2085, Unknown=0, NotChecked=0, Total=2862 [2022-11-22 02:39:26,612 INFO L87 Difference]: Start difference. First operand 184 states and 282 transitions. Second operand has 54 states, 54 states have (on average 3.6296296296296298) internal successors, (196), 54 states have internal predecessors, (196), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-22 02:40:40,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:40:40,569 INFO L93 Difference]: Finished difference Result 657 states and 1119 transitions. [2022-11-22 02:40:40,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-11-22 02:40:40,570 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 3.6296296296296298) internal successors, (196), 54 states have internal predecessors, (196), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 117 [2022-11-22 02:40:40,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:40:40,575 INFO L225 Difference]: With dead ends: 657 [2022-11-22 02:40:40,575 INFO L226 Difference]: Without dead ends: 485 [2022-11-22 02:40:40,579 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 788 GetRequests, 689 SyntacticMatches, 1 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1737 ImplicationChecksByTransitivity, 59.2s TimeCoverageRelationStatistics Valid=3174, Invalid=6726, Unknown=0, NotChecked=0, Total=9900 [2022-11-22 02:40:40,580 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 2392 mSDsluCounter, 5202 mSDsCounter, 0 mSdLazyCounter, 4335 mSolverCounterSat, 367 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2392 SdHoareTripleChecker+Valid, 5409 SdHoareTripleChecker+Invalid, 4702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 367 IncrementalHoareTripleChecker+Valid, 4335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.2s IncrementalHoareTripleChecker+Time [2022-11-22 02:40:40,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2392 Valid, 5409 Invalid, 4702 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [367 Valid, 4335 Invalid, 0 Unknown, 0 Unchecked, 32.2s Time] [2022-11-22 02:40:40,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2022-11-22 02:40:40,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 234. [2022-11-22 02:40:40,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 219 states have (on average 1.5022831050228311) internal successors, (329), 221 states have internal predecessors, (329), 8 states have call successors, (8), 3 states have call predecessors, (8), 6 states have return successors, (28), 9 states have call predecessors, (28), 7 states have call successors, (28) [2022-11-22 02:40:40,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 365 transitions. [2022-11-22 02:40:40,673 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 365 transitions. Word has length 117 [2022-11-22 02:40:40,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:40:40,674 INFO L495 AbstractCegarLoop]: Abstraction has 234 states and 365 transitions. [2022-11-22 02:40:40,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 3.6296296296296298) internal successors, (196), 54 states have internal predecessors, (196), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-22 02:40:40,674 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 365 transitions. [2022-11-22 02:40:40,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-11-22 02:40:40,676 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:40:40,676 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 23, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:40:40,694 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2022-11-22 02:40:40,892 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (38)] Ended with exit code 0 [2022-11-22 02:40:41,094 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2022-11-22 02:40:41,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt,39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:40:41,290 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:40:41,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:40:41,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1258657602, now seen corresponding path program 1 times [2022-11-22 02:40:41,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 02:40:41,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [497339725] [2022-11-22 02:40:41,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:40:41,291 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 [2022-11-22 02:40:41,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 02:40:41,292 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/mathsat -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) [2022-11-22 02:40:41,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2022-11-22 02:40:41,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:40:41,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-22 02:40:41,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:40:41,859 INFO L134 CoverageAnalysis]: Checked inductivity of 860 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 851 trivial. 0 not checked. [2022-11-22 02:40:41,860 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:40:42,108 INFO L134 CoverageAnalysis]: Checked inductivity of 860 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 851 trivial. 0 not checked. [2022-11-22 02:40:42,108 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 02:40:42,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [497339725] [2022-11-22 02:40:42,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [497339725] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:40:42,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [892626464] [2022-11-22 02:40:42,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:40:42,109 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-22 02:40:42,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/cvc4 [2022-11-22 02:40:42,111 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-22 02:40:42,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (41)] Waiting until timeout for monitored process [2022-11-22 02:40:42,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:40:42,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-22 02:40:42,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:40:42,320 INFO L134 CoverageAnalysis]: Checked inductivity of 860 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 851 trivial. 0 not checked. [2022-11-22 02:40:42,320 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:40:42,566 INFO L134 CoverageAnalysis]: Checked inductivity of 860 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 851 trivial. 0 not checked. [2022-11-22 02:40:42,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [892626464] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:40:42,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2104643289] [2022-11-22 02:40:42,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:40:42,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:40:42,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:40:42,569 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:40:42,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-11-22 02:40:42,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:40:42,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-22 02:40:42,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:40:42,791 INFO L134 CoverageAnalysis]: Checked inductivity of 860 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 851 trivial. 0 not checked. [2022-11-22 02:40:42,791 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:40:43,045 INFO L134 CoverageAnalysis]: Checked inductivity of 860 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 851 trivial. 0 not checked. [2022-11-22 02:40:43,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2104643289] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:40:43,046 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-22 02:40:43,046 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 8] total 8 [2022-11-22 02:40:43,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557555218] [2022-11-22 02:40:43,047 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-22 02:40:43,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 02:40:43,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 02:40:43,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 02:40:43,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:40:43,049 INFO L87 Difference]: Start difference. First operand 234 states and 365 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-22 02:40:43,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:40:43,786 INFO L93 Difference]: Finished difference Result 250 states and 380 transitions. [2022-11-22 02:40:43,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-22 02:40:43,787 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 125 [2022-11-22 02:40:43,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:40:43,789 INFO L225 Difference]: With dead ends: 250 [2022-11-22 02:40:43,790 INFO L226 Difference]: Without dead ends: 224 [2022-11-22 02:40:43,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 748 GetRequests, 738 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-11-22 02:40:43,791 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 13 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 02:40:43,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 397 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 02:40:43,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2022-11-22 02:40:43,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 216. [2022-11-22 02:40:43,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 202 states have (on average 1.5198019801980198) internal successors, (307), 205 states have internal predecessors, (307), 7 states have call successors, (7), 3 states have call predecessors, (7), 6 states have return successors, (19), 7 states have call predecessors, (19), 6 states have call successors, (19) [2022-11-22 02:40:43,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 333 transitions. [2022-11-22 02:40:43,866 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 333 transitions. Word has length 125 [2022-11-22 02:40:43,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:40:43,866 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 333 transitions. [2022-11-22 02:40:43,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-22 02:40:43,867 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 333 transitions. [2022-11-22 02:40:43,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-11-22 02:40:43,869 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:40:43,869 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 23, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:40:43,882 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2022-11-22 02:40:44,083 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (41)] Ended with exit code 0 [2022-11-22 02:40:44,286 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2022-11-22 02:40:44,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt,42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:40:44,482 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:40:44,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:40:44,483 INFO L85 PathProgramCache]: Analyzing trace with hash 1209150703, now seen corresponding path program 1 times [2022-11-22 02:40:44,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 02:40:44,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [152323054] [2022-11-22 02:40:44,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:40:44,483 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 [2022-11-22 02:40:44,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 02:40:44,484 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/mathsat -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) [2022-11-22 02:40:44,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2022-11-22 02:40:44,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:40:44,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-22 02:40:44,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:40:44,823 INFO L134 CoverageAnalysis]: Checked inductivity of 866 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 866 trivial. 0 not checked. [2022-11-22 02:40:44,823 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:40:44,824 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 02:40:44,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [152323054] [2022-11-22 02:40:44,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [152323054] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:40:44,824 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:40:44,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:40:44,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722823642] [2022-11-22 02:40:44,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:40:44,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:40:44,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 02:40:44,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:40:44,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:40:44,825 INFO L87 Difference]: Start difference. First operand 216 states and 333 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-22 02:40:45,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:40:45,185 INFO L93 Difference]: Finished difference Result 252 states and 375 transitions. [2022-11-22 02:40:45,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 02:40:45,186 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 126 [2022-11-22 02:40:45,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:40:45,188 INFO L225 Difference]: With dead ends: 252 [2022-11-22 02:40:45,188 INFO L226 Difference]: Without dead ends: 240 [2022-11-22 02:40:45,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-22 02:40:45,189 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 53 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 02:40:45,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 253 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 02:40:45,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2022-11-22 02:40:45,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 217. [2022-11-22 02:40:45,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 203 states have (on average 1.5172413793103448) internal successors, (308), 206 states have internal predecessors, (308), 7 states have call successors, (7), 3 states have call predecessors, (7), 6 states have return successors, (19), 7 states have call predecessors, (19), 6 states have call successors, (19) [2022-11-22 02:40:45,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 334 transitions. [2022-11-22 02:40:45,246 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 334 transitions. Word has length 126 [2022-11-22 02:40:45,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:40:45,246 INFO L495 AbstractCegarLoop]: Abstraction has 217 states and 334 transitions. [2022-11-22 02:40:45,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-22 02:40:45,247 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 334 transitions. [2022-11-22 02:40:45,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-11-22 02:40:45,248 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:40:45,249 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 23, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:40:45,266 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (43)] Forceful destruction successful, exit code 0 [2022-11-22 02:40:45,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-22 02:40:45,462 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:40:45,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:40:45,462 INFO L85 PathProgramCache]: Analyzing trace with hash 622344689, now seen corresponding path program 4 times [2022-11-22 02:40:45,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 02:40:45,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [517479489] [2022-11-22 02:40:45,463 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-22 02:40:45,463 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 [2022-11-22 02:40:45,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 02:40:45,464 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/mathsat -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) [2022-11-22 02:40:45,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2022-11-22 02:40:45,569 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-22 02:40:45,570 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 02:40:45,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 62 conjunts are in the unsatisfiable core [2022-11-22 02:40:45,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:40:55,754 INFO L134 CoverageAnalysis]: Checked inductivity of 866 backedges. 4 proven. 840 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-22 02:40:55,754 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:41:17,118 INFO L134 CoverageAnalysis]: Checked inductivity of 866 backedges. 4 proven. 840 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-22 02:41:17,119 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 02:41:17,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [517479489] [2022-11-22 02:41:17,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [517479489] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:41:17,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [214051075] [2022-11-22 02:41:17,119 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-22 02:41:17,119 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-22 02:41:17,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/cvc4 [2022-11-22 02:41:17,123 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-22 02:41:17,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (45)] Waiting until timeout for monitored process [2022-11-22 02:41:17,316 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-22 02:41:17,317 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 02:41:17,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 62 conjunts are in the unsatisfiable core [2022-11-22 02:41:17,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:41:19,457 INFO L134 CoverageAnalysis]: Checked inductivity of 866 backedges. 4 proven. 840 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-22 02:41:19,457 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:41:24,662 INFO L134 CoverageAnalysis]: Checked inductivity of 866 backedges. 4 proven. 840 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-22 02:41:24,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [214051075] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:41:24,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1699444585] [2022-11-22 02:41:24,663 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-22 02:41:24,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:41:24,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:41:24,664 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:41:24,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e437294-6cb1-4382-9a5c-c4bc4a1000e1/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2022-11-22 02:41:24,748 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-22 02:41:24,748 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 02:41:24,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-22 02:41:24,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:41:45,214 INFO L134 CoverageAnalysis]: Checked inductivity of 866 backedges. 4 proven. 840 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-22 02:41:45,215 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:42:09,145 INFO L134 CoverageAnalysis]: Checked inductivity of 866 backedges. 4 proven. 840 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-22 02:42:09,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1699444585] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:42:09,145 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-22 02:42:09,146 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33, 33, 33, 33] total 122 [2022-11-22 02:42:09,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35056653] [2022-11-22 02:42:09,146 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-22 02:42:09,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 122 states [2022-11-22 02:42:09,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 02:42:09,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2022-11-22 02:42:09,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2829, Invalid=11933, Unknown=0, NotChecked=0, Total=14762 [2022-11-22 02:42:09,150 INFO L87 Difference]: Start difference. First operand 217 states and 334 transitions. Second operand has 122 states, 122 states have (on average 2.918032786885246) internal successors, (356), 119 states have internal predecessors, (356), 5 states have call successors, (9), 2 states have call predecessors, (9), 5 states have return successors, (11), 7 states have call predecessors, (11), 4 states have call successors, (11)