./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.4.1.ufo.BOUNDED-8.pals+Problem12_label04.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 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_2ec5c757-8749-48f0-9ce7-3544b5f8247f/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ec5c757-8749-48f0-9ce7-3544b5f8247f/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ec5c757-8749-48f0-9ce7-3544b5f8247f/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ec5c757-8749-48f0-9ce7-3544b5f8247f/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.4.1.ufo.BOUNDED-8.pals+Problem12_label04.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ec5c757-8749-48f0-9ce7-3544b5f8247f/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ec5c757-8749-48f0-9ce7-3544b5f8247f/bin/uautomizer-verify-jihMAELWvX --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 76db29d9ca8ef7eef9a15a62e4507820e0c810b40a6129bc4bf7f78be54c22c5 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 16:21:14,735 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 16:21:14,871 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ec5c757-8749-48f0-9ce7-3544b5f8247f/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 16:21:14,883 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 16:21:14,885 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 16:21:14,954 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 16:21:14,954 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 16:21:14,955 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 16:21:14,956 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 16:21:14,958 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 16:21:14,958 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 16:21:14,959 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 16:21:14,960 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 16:21:14,960 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 16:21:14,960 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 16:21:14,961 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 16:21:14,965 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 16:21:14,966 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 16:21:14,966 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 16:21:14,970 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 16:21:14,971 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 16:21:14,971 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 16:21:14,972 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 16:21:14,972 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 16:21:14,972 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 16:21:14,973 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 16:21:14,973 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 16:21:14,973 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 16:21:14,974 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 16:21:14,978 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 16:21:14,979 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 16:21:14,979 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 16:21:14,979 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 16:21:14,980 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 16:21:14,980 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 16:21:14,988 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 16:21:14,989 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 16:21:14,989 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 16:21:14,990 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 16:21:14,990 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 16:21:14,990 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 16:21:14,991 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 16:21:14,991 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_2ec5c757-8749-48f0-9ce7-3544b5f8247f/bin/uautomizer-verify-jihMAELWvX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ec5c757-8749-48f0-9ce7-3544b5f8247f/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 76db29d9ca8ef7eef9a15a62e4507820e0c810b40a6129bc4bf7f78be54c22c5 [2024-11-08 16:21:15,368 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 16:21:15,409 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 16:21:15,413 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 16:21:15,414 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 16:21:15,415 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 16:21:15,417 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ec5c757-8749-48f0-9ce7-3544b5f8247f/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/combinations/pals_lcr.4.1.ufo.BOUNDED-8.pals+Problem12_label04.c Unable to find full path for "g++" [2024-11-08 16:21:17,914 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 16:21:18,604 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 16:21:18,608 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ec5c757-8749-48f0-9ce7-3544b5f8247f/sv-benchmarks/c/combinations/pals_lcr.4.1.ufo.BOUNDED-8.pals+Problem12_label04.c [2024-11-08 16:21:18,654 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ec5c757-8749-48f0-9ce7-3544b5f8247f/bin/uautomizer-verify-jihMAELWvX/data/e392dbe22/5a1927e12269493bb962d0518300c5f3/FLAG851b3cc31 [2024-11-08 16:21:18,680 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ec5c757-8749-48f0-9ce7-3544b5f8247f/bin/uautomizer-verify-jihMAELWvX/data/e392dbe22/5a1927e12269493bb962d0518300c5f3 [2024-11-08 16:21:18,683 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 16:21:18,685 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 16:21:18,687 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 16:21:18,687 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 16:21:18,694 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 16:21:18,695 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 04:21:18" (1/1) ... [2024-11-08 16:21:18,697 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2036ea10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:21:18, skipping insertion in model container [2024-11-08 16:21:18,697 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 04:21:18" (1/1) ... [2024-11-08 16:21:18,892 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 16:21:19,327 WARN L250 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_2ec5c757-8749-48f0-9ce7-3544b5f8247f/sv-benchmarks/c/combinations/pals_lcr.4.1.ufo.BOUNDED-8.pals+Problem12_label04.c[8653,8666] [2024-11-08 16:21:19,442 WARN L250 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_2ec5c757-8749-48f0-9ce7-3544b5f8247f/sv-benchmarks/c/combinations/pals_lcr.4.1.ufo.BOUNDED-8.pals+Problem12_label04.c[15714,15727] [2024-11-08 16:21:20,855 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 16:21:20,873 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 16:21:20,932 WARN L250 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_2ec5c757-8749-48f0-9ce7-3544b5f8247f/sv-benchmarks/c/combinations/pals_lcr.4.1.ufo.BOUNDED-8.pals+Problem12_label04.c[8653,8666] [2024-11-08 16:21:20,957 WARN L250 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_2ec5c757-8749-48f0-9ce7-3544b5f8247f/sv-benchmarks/c/combinations/pals_lcr.4.1.ufo.BOUNDED-8.pals+Problem12_label04.c[15714,15727] [2024-11-08 16:21:21,913 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 16:21:21,967 INFO L204 MainTranslator]: Completed translation [2024-11-08 16:21:21,968 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:21:21 WrapperNode [2024-11-08 16:21:21,969 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 16:21:21,970 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 16:21:21,971 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 16:21:21,971 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 16:21:21,984 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:21:21" (1/1) ... [2024-11-08 16:21:22,072 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:21:21" (1/1) ... [2024-11-08 16:21:22,739 INFO L138 Inliner]: procedures = 34, calls = 20, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 5038 [2024-11-08 16:21:22,740 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 16:21:22,741 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 16:21:22,741 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 16:21:22,741 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 16:21:22,759 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:21:21" (1/1) ... [2024-11-08 16:21:22,759 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:21:21" (1/1) ... [2024-11-08 16:21:22,872 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:21:21" (1/1) ... [2024-11-08 16:21:23,067 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-08 16:21:23,067 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:21:21" (1/1) ... [2024-11-08 16:21:23,069 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:21:21" (1/1) ... [2024-11-08 16:21:23,301 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:21:21" (1/1) ... [2024-11-08 16:21:23,358 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:21:21" (1/1) ... [2024-11-08 16:21:23,417 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:21:21" (1/1) ... [2024-11-08 16:21:23,440 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:21:21" (1/1) ... [2024-11-08 16:21:23,526 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 16:21:23,529 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 16:21:23,530 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 16:21:23,530 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 16:21:23,532 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:21:21" (1/1) ... [2024-11-08 16:21:23,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 16:21:23,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ec5c757-8749-48f0-9ce7-3544b5f8247f/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:21:23,639 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ec5c757-8749-48f0-9ce7-3544b5f8247f/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 16:21:23,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ec5c757-8749-48f0-9ce7-3544b5f8247f/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 16:21:23,688 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 16:21:23,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 16:21:23,689 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 16:21:23,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 16:21:23,878 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 16:21:23,885 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 16:21:31,995 INFO L? ?]: Removed 738 outVars from TransFormulas that were not future-live. [2024-11-08 16:21:31,996 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 16:21:32,053 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 16:21:32,053 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-08 16:21:32,054 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:21:32 BoogieIcfgContainer [2024-11-08 16:21:32,054 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 16:21:32,058 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 16:21:32,058 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 16:21:32,062 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 16:21:32,062 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 04:21:18" (1/3) ... [2024-11-08 16:21:32,065 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c6dad44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 04:21:32, skipping insertion in model container [2024-11-08 16:21:32,065 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:21:21" (2/3) ... [2024-11-08 16:21:32,066 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c6dad44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 04:21:32, skipping insertion in model container [2024-11-08 16:21:32,067 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:21:32" (3/3) ... [2024-11-08 16:21:32,068 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.1.ufo.BOUNDED-8.pals+Problem12_label04.c [2024-11-08 16:21:32,091 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 16:21:32,092 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-08 16:21:32,236 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 16:21:32,248 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@32e0b5dd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 16:21:32,249 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-08 16:21:32,262 INFO L276 IsEmpty]: Start isEmpty. Operand has 886 states, 883 states have (on average 1.9048697621744055) internal successors, (1682), 885 states have internal predecessors, (1682), 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) [2024-11-08 16:21:32,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-08 16:21:32,276 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:21:32,277 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:21:32,278 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:21:32,286 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:21:32,286 INFO L85 PathProgramCache]: Analyzing trace with hash 578166823, now seen corresponding path program 1 times [2024-11-08 16:21:32,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:21:32,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682792370] [2024-11-08 16:21:32,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:21:32,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:21:32,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:21:32,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:21:32,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:21:32,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682792370] [2024-11-08 16:21:32,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682792370] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:21:32,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:21:32,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 16:21:32,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42949200] [2024-11-08 16:21:32,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:21:32,609 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-08 16:21:32,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:21:32,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-08 16:21:32,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 16:21:32,649 INFO L87 Difference]: Start difference. First operand has 886 states, 883 states have (on average 1.9048697621744055) internal successors, (1682), 885 states have internal predecessors, (1682), 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) Second operand has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 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) [2024-11-08 16:21:32,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:21:32,783 INFO L93 Difference]: Finished difference Result 1743 states and 3310 transitions. [2024-11-08 16:21:32,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-08 16:21:32,786 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 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 23 [2024-11-08 16:21:32,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:21:32,822 INFO L225 Difference]: With dead ends: 1743 [2024-11-08 16:21:32,826 INFO L226 Difference]: Without dead ends: 820 [2024-11-08 16:21:32,838 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 16:21:32,845 INFO L432 NwaCegarLoop]: 1617 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, 1617 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 [2024-11-08 16:21:32,847 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1617 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:21:32,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 820 states. [2024-11-08 16:21:32,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 820 to 820. [2024-11-08 16:21:32,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 820 states, 818 states have (on average 1.8936430317848412) internal successors, (1549), 819 states have internal predecessors, (1549), 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) [2024-11-08 16:21:32,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 820 states to 820 states and 1549 transitions. [2024-11-08 16:21:32,945 INFO L78 Accepts]: Start accepts. Automaton has 820 states and 1549 transitions. Word has length 23 [2024-11-08 16:21:32,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:21:32,946 INFO L471 AbstractCegarLoop]: Abstraction has 820 states and 1549 transitions. [2024-11-08 16:21:32,946 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 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) [2024-11-08 16:21:32,947 INFO L276 IsEmpty]: Start isEmpty. Operand 820 states and 1549 transitions. [2024-11-08 16:21:32,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-08 16:21:32,948 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:21:32,948 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:21:32,949 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 16:21:32,949 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:21:32,950 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:21:32,950 INFO L85 PathProgramCache]: Analyzing trace with hash -1010181079, now seen corresponding path program 1 times [2024-11-08 16:21:32,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:21:32,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780639026] [2024-11-08 16:21:32,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:21:32,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:21:33,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:21:33,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:21:33,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:21:33,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780639026] [2024-11-08 16:21:33,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780639026] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:21:33,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:21:33,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 16:21:33,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790054551] [2024-11-08 16:21:33,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:21:33,281 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 16:21:33,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:21:33,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 16:21:33,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 16:21:33,284 INFO L87 Difference]: Start difference. First operand 820 states and 1549 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 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) [2024-11-08 16:21:33,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:21:33,480 INFO L93 Difference]: Finished difference Result 898 states and 1669 transitions. [2024-11-08 16:21:33,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 16:21:33,481 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 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 23 [2024-11-08 16:21:33,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:21:33,486 INFO L225 Difference]: With dead ends: 898 [2024-11-08 16:21:33,486 INFO L226 Difference]: Without dead ends: 857 [2024-11-08 16:21:33,488 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 16:21:33,489 INFO L432 NwaCegarLoop]: 1544 mSDtfsCounter, 57 mSDsluCounter, 4603 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 6147 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 16:21:33,491 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 6147 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 16:21:33,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 857 states. [2024-11-08 16:21:33,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 857 to 820. [2024-11-08 16:21:33,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 820 states, 818 states have (on average 1.8655256723716382) internal successors, (1526), 819 states have internal predecessors, (1526), 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) [2024-11-08 16:21:33,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 820 states to 820 states and 1526 transitions. [2024-11-08 16:21:33,545 INFO L78 Accepts]: Start accepts. Automaton has 820 states and 1526 transitions. Word has length 23 [2024-11-08 16:21:33,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:21:33,545 INFO L471 AbstractCegarLoop]: Abstraction has 820 states and 1526 transitions. [2024-11-08 16:21:33,545 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 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) [2024-11-08 16:21:33,546 INFO L276 IsEmpty]: Start isEmpty. Operand 820 states and 1526 transitions. [2024-11-08 16:21:33,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-08 16:21:33,549 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:21:33,549 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:21:33,550 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 16:21:33,550 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:21:33,551 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:21:33,551 INFO L85 PathProgramCache]: Analyzing trace with hash -552687090, now seen corresponding path program 1 times [2024-11-08 16:21:33,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:21:33,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963450579] [2024-11-08 16:21:33,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:21:33,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:21:33,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:21:33,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:21:33,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:21:33,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963450579] [2024-11-08 16:21:33,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963450579] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:21:33,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:21:33,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 16:21:33,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559237251] [2024-11-08 16:21:33,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:21:33,855 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 16:21:33,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:21:33,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 16:21:33,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-08 16:21:33,858 INFO L87 Difference]: Start difference. First operand 820 states and 1526 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 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) [2024-11-08 16:21:34,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:21:34,284 INFO L93 Difference]: Finished difference Result 1116 states and 1990 transitions. [2024-11-08 16:21:34,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-08 16:21:34,285 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 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 45 [2024-11-08 16:21:34,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:21:34,292 INFO L225 Difference]: With dead ends: 1116 [2024-11-08 16:21:34,293 INFO L226 Difference]: Without dead ends: 1079 [2024-11-08 16:21:34,294 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-08 16:21:34,298 INFO L432 NwaCegarLoop]: 1522 mSDtfsCounter, 6269 mSDsluCounter, 679 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6269 SdHoareTripleChecker+Valid, 2201 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 16:21:34,299 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6269 Valid, 2201 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 16:21:34,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1079 states. [2024-11-08 16:21:34,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1079 to 855. [2024-11-08 16:21:34,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 855 states, 853 states have (on average 1.8534583821805393) internal successors, (1581), 854 states have internal predecessors, (1581), 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) [2024-11-08 16:21:34,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1581 transitions. [2024-11-08 16:21:34,332 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1581 transitions. Word has length 45 [2024-11-08 16:21:34,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:21:34,333 INFO L471 AbstractCegarLoop]: Abstraction has 855 states and 1581 transitions. [2024-11-08 16:21:34,334 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 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) [2024-11-08 16:21:34,334 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1581 transitions. [2024-11-08 16:21:34,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-08 16:21:34,336 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:21:34,336 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:21:34,338 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 16:21:34,338 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:21:34,341 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:21:34,341 INFO L85 PathProgramCache]: Analyzing trace with hash 27952062, now seen corresponding path program 1 times [2024-11-08 16:21:34,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:21:34,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294811367] [2024-11-08 16:21:34,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:21:34,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:21:34,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:21:34,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:21:34,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:21:34,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294811367] [2024-11-08 16:21:34,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294811367] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:21:34,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:21:34,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:21:34,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731119751] [2024-11-08 16:21:34,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:21:34,542 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:21:34,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:21:34,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:21:34,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:21:34,544 INFO L87 Difference]: Start difference. First operand 855 states and 1581 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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) [2024-11-08 16:21:34,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:21:34,604 INFO L93 Difference]: Finished difference Result 988 states and 1788 transitions. [2024-11-08 16:21:34,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:21:34,605 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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 47 [2024-11-08 16:21:34,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:21:34,610 INFO L225 Difference]: With dead ends: 988 [2024-11-08 16:21:34,610 INFO L226 Difference]: Without dead ends: 916 [2024-11-08 16:21:34,615 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:21:34,616 INFO L432 NwaCegarLoop]: 1524 mSDtfsCounter, 1474 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1474 SdHoareTripleChecker+Valid, 1577 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 16:21:34,618 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1474 Valid, 1577 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:21:34,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 916 states. [2024-11-08 16:21:34,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 916 to 914. [2024-11-08 16:21:34,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 914 states, 912 states have (on average 1.832236842105263) internal successors, (1671), 913 states have internal predecessors, (1671), 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) [2024-11-08 16:21:34,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 914 states to 914 states and 1671 transitions. [2024-11-08 16:21:34,648 INFO L78 Accepts]: Start accepts. Automaton has 914 states and 1671 transitions. Word has length 47 [2024-11-08 16:21:34,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:21:34,649 INFO L471 AbstractCegarLoop]: Abstraction has 914 states and 1671 transitions. [2024-11-08 16:21:34,649 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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) [2024-11-08 16:21:34,649 INFO L276 IsEmpty]: Start isEmpty. Operand 914 states and 1671 transitions. [2024-11-08 16:21:34,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-08 16:21:34,653 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:21:34,653 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:21:34,654 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 16:21:34,654 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:21:34,655 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:21:34,655 INFO L85 PathProgramCache]: Analyzing trace with hash 94445574, now seen corresponding path program 1 times [2024-11-08 16:21:34,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:21:34,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111506223] [2024-11-08 16:21:34,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:21:34,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:21:34,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:21:35,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:21:35,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:21:35,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111506223] [2024-11-08 16:21:35,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111506223] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:21:35,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:21:35,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 16:21:35,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262697753] [2024-11-08 16:21:35,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:21:35,083 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 16:21:35,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:21:35,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 16:21:35,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-08 16:21:35,085 INFO L87 Difference]: Start difference. First operand 914 states and 1671 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 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) [2024-11-08 16:21:35,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:21:35,292 INFO L93 Difference]: Finished difference Result 1047 states and 1875 transitions. [2024-11-08 16:21:35,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 16:21:35,293 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 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 47 [2024-11-08 16:21:35,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:21:35,299 INFO L225 Difference]: With dead ends: 1047 [2024-11-08 16:21:35,300 INFO L226 Difference]: Without dead ends: 916 [2024-11-08 16:21:35,301 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-11-08 16:21:35,305 INFO L432 NwaCegarLoop]: 1520 mSDtfsCounter, 5924 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5924 SdHoareTripleChecker+Valid, 1682 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 16:21:35,306 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5924 Valid, 1682 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 16:21:35,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 916 states. [2024-11-08 16:21:35,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 916 to 914. [2024-11-08 16:21:35,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 914 states, 912 states have (on average 1.8300438596491229) internal successors, (1669), 913 states have internal predecessors, (1669), 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) [2024-11-08 16:21:35,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 914 states to 914 states and 1669 transitions. [2024-11-08 16:21:35,334 INFO L78 Accepts]: Start accepts. Automaton has 914 states and 1669 transitions. Word has length 47 [2024-11-08 16:21:35,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:21:35,336 INFO L471 AbstractCegarLoop]: Abstraction has 914 states and 1669 transitions. [2024-11-08 16:21:35,337 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 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) [2024-11-08 16:21:35,337 INFO L276 IsEmpty]: Start isEmpty. Operand 914 states and 1669 transitions. [2024-11-08 16:21:35,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-08 16:21:35,342 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:21:35,342 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:21:35,342 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 16:21:35,343 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:21:35,343 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:21:35,343 INFO L85 PathProgramCache]: Analyzing trace with hash -1781877655, now seen corresponding path program 1 times [2024-11-08 16:21:35,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:21:35,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359401150] [2024-11-08 16:21:35,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:21:35,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:21:35,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:21:35,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:21:35,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:21:35,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359401150] [2024-11-08 16:21:35,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359401150] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:21:35,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:21:35,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 16:21:35,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738139594] [2024-11-08 16:21:35,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:21:35,677 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 16:21:35,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:21:35,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 16:21:35,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 16:21:35,678 INFO L87 Difference]: Start difference. First operand 914 states and 1669 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 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) [2024-11-08 16:21:35,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:21:35,761 INFO L93 Difference]: Finished difference Result 922 states and 1678 transitions. [2024-11-08 16:21:35,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 16:21:35,763 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 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 48 [2024-11-08 16:21:35,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:21:35,771 INFO L225 Difference]: With dead ends: 922 [2024-11-08 16:21:35,771 INFO L226 Difference]: Without dead ends: 920 [2024-11-08 16:21:35,772 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 16:21:35,775 INFO L432 NwaCegarLoop]: 1523 mSDtfsCounter, 0 mSDsluCounter, 4560 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6083 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 16:21:35,776 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6083 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:21:35,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920 states. [2024-11-08 16:21:35,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 920. [2024-11-08 16:21:35,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 920 states, 918 states have (on average 1.8235294117647058) internal successors, (1674), 919 states have internal predecessors, (1674), 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) [2024-11-08 16:21:35,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 920 states to 920 states and 1674 transitions. [2024-11-08 16:21:35,811 INFO L78 Accepts]: Start accepts. Automaton has 920 states and 1674 transitions. Word has length 48 [2024-11-08 16:21:35,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:21:35,812 INFO L471 AbstractCegarLoop]: Abstraction has 920 states and 1674 transitions. [2024-11-08 16:21:35,812 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 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) [2024-11-08 16:21:35,812 INFO L276 IsEmpty]: Start isEmpty. Operand 920 states and 1674 transitions. [2024-11-08 16:21:35,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-08 16:21:35,813 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:21:35,813 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:21:35,813 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-08 16:21:35,814 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:21:35,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:21:35,814 INFO L85 PathProgramCache]: Analyzing trace with hash 1233670470, now seen corresponding path program 1 times [2024-11-08 16:21:35,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:21:35,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780726752] [2024-11-08 16:21:35,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:21:35,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:21:35,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:21:35,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:21:35,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:21:35,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780726752] [2024-11-08 16:21:35,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780726752] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:21:35,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:21:35,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:21:35,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252969186] [2024-11-08 16:21:35,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:21:35,902 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:21:35,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:21:35,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:21:35,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:21:35,907 INFO L87 Difference]: Start difference. First operand 920 states and 1674 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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) [2024-11-08 16:21:35,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:21:35,953 INFO L93 Difference]: Finished difference Result 1071 states and 1900 transitions. [2024-11-08 16:21:35,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:21:35,954 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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 49 [2024-11-08 16:21:35,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:21:35,959 INFO L225 Difference]: With dead ends: 1071 [2024-11-08 16:21:35,959 INFO L226 Difference]: Without dead ends: 993 [2024-11-08 16:21:35,960 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:21:35,961 INFO L432 NwaCegarLoop]: 1568 mSDtfsCounter, 1486 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1486 SdHoareTripleChecker+Valid, 1627 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 16:21:35,961 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1486 Valid, 1627 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:21:35,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 993 states. [2024-11-08 16:21:35,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 993 to 991. [2024-11-08 16:21:35,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 991 states, 989 states have (on average 1.7977755308392316) internal successors, (1778), 990 states have internal predecessors, (1778), 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) [2024-11-08 16:21:35,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 991 states to 991 states and 1778 transitions. [2024-11-08 16:21:35,992 INFO L78 Accepts]: Start accepts. Automaton has 991 states and 1778 transitions. Word has length 49 [2024-11-08 16:21:35,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:21:35,992 INFO L471 AbstractCegarLoop]: Abstraction has 991 states and 1778 transitions. [2024-11-08 16:21:35,993 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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) [2024-11-08 16:21:35,993 INFO L276 IsEmpty]: Start isEmpty. Operand 991 states and 1778 transitions. [2024-11-08 16:21:35,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-08 16:21:35,994 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:21:35,994 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:21:35,994 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-08 16:21:35,995 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:21:35,995 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:21:35,995 INFO L85 PathProgramCache]: Analyzing trace with hash 256463686, now seen corresponding path program 1 times [2024-11-08 16:21:35,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:21:35,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059772253] [2024-11-08 16:21:35,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:21:35,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:21:36,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:21:36,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:21:36,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:21:36,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059772253] [2024-11-08 16:21:36,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059772253] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:21:36,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:21:36,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:21:36,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516732258] [2024-11-08 16:21:36,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:21:36,101 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:21:36,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:21:36,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:21:36,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:21:36,104 INFO L87 Difference]: Start difference. First operand 991 states and 1778 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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) [2024-11-08 16:21:36,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:21:36,148 INFO L93 Difference]: Finished difference Result 1377 states and 2350 transitions. [2024-11-08 16:21:36,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:21:36,149 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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 49 [2024-11-08 16:21:36,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:21:36,155 INFO L225 Difference]: With dead ends: 1377 [2024-11-08 16:21:36,156 INFO L226 Difference]: Without dead ends: 1172 [2024-11-08 16:21:36,157 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:21:36,157 INFO L432 NwaCegarLoop]: 1560 mSDtfsCounter, 1482 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1482 SdHoareTripleChecker+Valid, 1627 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 16:21:36,159 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1482 Valid, 1627 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:21:36,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1172 states. [2024-11-08 16:21:36,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1172 to 1170. [2024-11-08 16:21:36,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1170 states, 1168 states have (on average 1.7431506849315068) internal successors, (2036), 1169 states have internal predecessors, (2036), 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) [2024-11-08 16:21:36,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1170 states to 1170 states and 2036 transitions. [2024-11-08 16:21:36,200 INFO L78 Accepts]: Start accepts. Automaton has 1170 states and 2036 transitions. Word has length 49 [2024-11-08 16:21:36,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:21:36,200 INFO L471 AbstractCegarLoop]: Abstraction has 1170 states and 2036 transitions. [2024-11-08 16:21:36,201 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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) [2024-11-08 16:21:36,201 INFO L276 IsEmpty]: Start isEmpty. Operand 1170 states and 2036 transitions. [2024-11-08 16:21:36,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-08 16:21:36,203 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:21:36,203 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:21:36,203 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-08 16:21:36,204 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:21:36,204 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:21:36,204 INFO L85 PathProgramCache]: Analyzing trace with hash 2037396550, now seen corresponding path program 1 times [2024-11-08 16:21:36,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:21:36,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710512355] [2024-11-08 16:21:36,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:21:36,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:21:36,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:21:36,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:21:36,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:21:36,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710512355] [2024-11-08 16:21:36,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710512355] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:21:36,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:21:36,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:21:36,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23590048] [2024-11-08 16:21:36,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:21:36,290 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:21:36,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:21:36,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:21:36,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:21:36,292 INFO L87 Difference]: Start difference. First operand 1170 states and 2036 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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) [2024-11-08 16:21:36,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:21:36,341 INFO L93 Difference]: Finished difference Result 1890 states and 3082 transitions. [2024-11-08 16:21:36,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:21:36,341 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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 49 [2024-11-08 16:21:36,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:21:36,348 INFO L225 Difference]: With dead ends: 1890 [2024-11-08 16:21:36,348 INFO L226 Difference]: Without dead ends: 1506 [2024-11-08 16:21:36,349 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:21:36,350 INFO L432 NwaCegarLoop]: 1558 mSDtfsCounter, 1480 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1480 SdHoareTripleChecker+Valid, 1629 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 16:21:36,351 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1480 Valid, 1629 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:21:36,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1506 states. [2024-11-08 16:21:36,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1506 to 1504. [2024-11-08 16:21:36,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1504 states, 1502 states have (on average 1.66711051930759) internal successors, (2504), 1503 states have internal predecessors, (2504), 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) [2024-11-08 16:21:36,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1504 states to 1504 states and 2504 transitions. [2024-11-08 16:21:36,446 INFO L78 Accepts]: Start accepts. Automaton has 1504 states and 2504 transitions. Word has length 49 [2024-11-08 16:21:36,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:21:36,447 INFO L471 AbstractCegarLoop]: Abstraction has 1504 states and 2504 transitions. [2024-11-08 16:21:36,447 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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) [2024-11-08 16:21:36,447 INFO L276 IsEmpty]: Start isEmpty. Operand 1504 states and 2504 transitions. [2024-11-08 16:21:36,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-08 16:21:36,448 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:21:36,449 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:21:36,450 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-08 16:21:36,450 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:21:36,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:21:36,451 INFO L85 PathProgramCache]: Analyzing trace with hash -1823034810, now seen corresponding path program 1 times [2024-11-08 16:21:36,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:21:36,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112228459] [2024-11-08 16:21:36,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:21:36,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:21:36,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:21:36,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:21:36,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:21:36,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112228459] [2024-11-08 16:21:36,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112228459] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:21:36,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:21:36,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:21:36,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711113134] [2024-11-08 16:21:36,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:21:36,522 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:21:36,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:21:36,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:21:36,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:21:36,523 INFO L87 Difference]: Start difference. First operand 1504 states and 2504 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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) [2024-11-08 16:21:36,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:21:36,585 INFO L93 Difference]: Finished difference Result 2844 states and 4402 transitions. [2024-11-08 16:21:36,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:21:36,586 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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 49 [2024-11-08 16:21:36,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:21:36,594 INFO L225 Difference]: With dead ends: 2844 [2024-11-08 16:21:36,594 INFO L226 Difference]: Without dead ends: 2126 [2024-11-08 16:21:36,596 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:21:36,596 INFO L432 NwaCegarLoop]: 1570 mSDtfsCounter, 1484 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1484 SdHoareTripleChecker+Valid, 1633 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 16:21:36,597 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1484 Valid, 1633 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:21:36,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2126 states. [2024-11-08 16:21:36,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2126 to 2124. [2024-11-08 16:21:36,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2124 states, 2122 states have (on average 1.5758718190386427) internal successors, (3344), 2123 states have internal predecessors, (3344), 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) [2024-11-08 16:21:36,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2124 states to 2124 states and 3344 transitions. [2024-11-08 16:21:36,682 INFO L78 Accepts]: Start accepts. Automaton has 2124 states and 3344 transitions. Word has length 49 [2024-11-08 16:21:36,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:21:36,683 INFO L471 AbstractCegarLoop]: Abstraction has 2124 states and 3344 transitions. [2024-11-08 16:21:36,683 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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) [2024-11-08 16:21:36,683 INFO L276 IsEmpty]: Start isEmpty. Operand 2124 states and 3344 transitions. [2024-11-08 16:21:36,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-08 16:21:36,685 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:21:36,685 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:21:36,686 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-08 16:21:36,686 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:21:36,686 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:21:36,687 INFO L85 PathProgramCache]: Analyzing trace with hash -169708936, now seen corresponding path program 1 times [2024-11-08 16:21:36,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:21:36,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339465468] [2024-11-08 16:21:36,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:21:36,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:21:36,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:21:36,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:21:36,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:21:36,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339465468] [2024-11-08 16:21:36,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339465468] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:21:36,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:21:36,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:21:36,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269143349] [2024-11-08 16:21:36,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:21:36,926 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 16:21:36,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:21:36,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 16:21:36,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 16:21:36,927 INFO L87 Difference]: Start difference. First operand 2124 states and 3344 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 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) [2024-11-08 16:21:47,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:21:47,562 INFO L93 Difference]: Finished difference Result 4379 states and 7653 transitions. [2024-11-08 16:21:47,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 16:21:47,563 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 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 61 [2024-11-08 16:21:47,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:21:47,594 INFO L225 Difference]: With dead ends: 4379 [2024-11-08 16:21:47,596 INFO L226 Difference]: Without dead ends: 3626 [2024-11-08 16:21:47,599 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 16:21:47,600 INFO L432 NwaCegarLoop]: 780 mSDtfsCounter, 2371 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5154 mSolverCounterSat, 1245 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2371 SdHoareTripleChecker+Valid, 798 SdHoareTripleChecker+Invalid, 6399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1245 IncrementalHoareTripleChecker+Valid, 5154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2024-11-08 16:21:47,601 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2371 Valid, 798 Invalid, 6399 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1245 Valid, 5154 Invalid, 0 Unknown, 0 Unchecked, 10.3s Time] [2024-11-08 16:21:47,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3626 states. [2024-11-08 16:21:47,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3626 to 3626. [2024-11-08 16:21:47,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3626 states, 3624 states have (on average 1.467991169977925) internal successors, (5320), 3625 states have internal predecessors, (5320), 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) [2024-11-08 16:21:47,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3626 states to 3626 states and 5320 transitions. [2024-11-08 16:21:47,786 INFO L78 Accepts]: Start accepts. Automaton has 3626 states and 5320 transitions. Word has length 61 [2024-11-08 16:21:47,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:21:47,787 INFO L471 AbstractCegarLoop]: Abstraction has 3626 states and 5320 transitions. [2024-11-08 16:21:47,787 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 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) [2024-11-08 16:21:47,788 INFO L276 IsEmpty]: Start isEmpty. Operand 3626 states and 5320 transitions. [2024-11-08 16:21:47,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-08 16:21:47,790 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:21:47,790 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:21:47,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-08 16:21:47,791 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:21:47,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:21:47,792 INFO L85 PathProgramCache]: Analyzing trace with hash 2040509128, now seen corresponding path program 1 times [2024-11-08 16:21:47,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:21:47,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290177975] [2024-11-08 16:21:47,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:21:47,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:21:47,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:21:48,084 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 16:21:48,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:21:48,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290177975] [2024-11-08 16:21:48,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290177975] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:21:48,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:21:48,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 16:21:48,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853042704] [2024-11-08 16:21:48,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:21:48,087 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 16:21:48,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:21:48,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 16:21:48,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-08 16:21:48,089 INFO L87 Difference]: Start difference. First operand 3626 states and 5320 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 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) [2024-11-08 16:21:48,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:21:48,415 INFO L93 Difference]: Finished difference Result 8900 states and 12693 transitions. [2024-11-08 16:21:48,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 16:21:48,416 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 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 67 [2024-11-08 16:21:48,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:21:48,449 INFO L225 Difference]: With dead ends: 8900 [2024-11-08 16:21:48,449 INFO L226 Difference]: Without dead ends: 7938 [2024-11-08 16:21:48,455 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-08 16:21:48,456 INFO L432 NwaCegarLoop]: 1576 mSDtfsCounter, 4652 mSDsluCounter, 1736 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4652 SdHoareTripleChecker+Valid, 3312 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 16:21:48,456 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4652 Valid, 3312 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 16:21:48,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7938 states. [2024-11-08 16:21:48,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7938 to 4778. [2024-11-08 16:21:48,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4778 states, 4776 states have (on average 1.4472361809045227) internal successors, (6912), 4777 states have internal predecessors, (6912), 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) [2024-11-08 16:21:48,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4778 states to 4778 states and 6912 transitions. [2024-11-08 16:21:48,673 INFO L78 Accepts]: Start accepts. Automaton has 4778 states and 6912 transitions. Word has length 67 [2024-11-08 16:21:48,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:21:48,673 INFO L471 AbstractCegarLoop]: Abstraction has 4778 states and 6912 transitions. [2024-11-08 16:21:48,673 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 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) [2024-11-08 16:21:48,674 INFO L276 IsEmpty]: Start isEmpty. Operand 4778 states and 6912 transitions. [2024-11-08 16:21:48,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-08 16:21:48,675 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:21:48,676 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:21:48,676 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-08 16:21:48,676 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:21:48,677 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:21:48,677 INFO L85 PathProgramCache]: Analyzing trace with hash 1063302344, now seen corresponding path program 1 times [2024-11-08 16:21:48,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:21:48,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81002898] [2024-11-08 16:21:48,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:21:48,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:21:48,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:21:48,857 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-08 16:21:48,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:21:48,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81002898] [2024-11-08 16:21:48,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81002898] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:21:48,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:21:48,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 16:21:48,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418829559] [2024-11-08 16:21:48,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:21:48,859 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 16:21:48,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:21:48,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 16:21:48,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-08 16:21:48,861 INFO L87 Difference]: Start difference. First operand 4778 states and 6912 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 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) [2024-11-08 16:21:49,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:21:49,283 INFO L93 Difference]: Finished difference Result 10236 states and 14549 transitions. [2024-11-08 16:21:49,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 16:21:49,284 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 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 67 [2024-11-08 16:21:49,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:21:49,318 INFO L225 Difference]: With dead ends: 10236 [2024-11-08 16:21:49,318 INFO L226 Difference]: Without dead ends: 8898 [2024-11-08 16:21:49,323 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-08 16:21:49,324 INFO L432 NwaCegarLoop]: 1576 mSDtfsCounter, 4687 mSDsluCounter, 1766 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4687 SdHoareTripleChecker+Valid, 3342 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 16:21:49,324 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4687 Valid, 3342 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 16:21:49,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8898 states. [2024-11-08 16:21:49,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8898 to 6594. [2024-11-08 16:21:49,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6594 states, 6592 states have (on average 1.4283980582524272) internal successors, (9416), 6593 states have internal predecessors, (9416), 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) [2024-11-08 16:21:49,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6594 states to 6594 states and 9416 transitions. [2024-11-08 16:21:49,591 INFO L78 Accepts]: Start accepts. Automaton has 6594 states and 9416 transitions. Word has length 67 [2024-11-08 16:21:49,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:21:49,592 INFO L471 AbstractCegarLoop]: Abstraction has 6594 states and 9416 transitions. [2024-11-08 16:21:49,592 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 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) [2024-11-08 16:21:49,592 INFO L276 IsEmpty]: Start isEmpty. Operand 6594 states and 9416 transitions. [2024-11-08 16:21:49,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-08 16:21:49,594 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:21:49,594 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:21:49,594 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-08 16:21:49,595 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:21:49,595 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:21:49,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1450732088, now seen corresponding path program 1 times [2024-11-08 16:21:49,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:21:49,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144917336] [2024-11-08 16:21:49,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:21:49,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:21:49,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:21:49,781 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-08 16:21:49,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:21:49,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144917336] [2024-11-08 16:21:49,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144917336] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:21:49,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:21:49,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 16:21:49,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771897974] [2024-11-08 16:21:49,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:21:49,783 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 16:21:49,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:21:49,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 16:21:49,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-08 16:21:49,784 INFO L87 Difference]: Start difference. First operand 6594 states and 9416 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 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) [2024-11-08 16:21:50,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:21:50,172 INFO L93 Difference]: Finished difference Result 11572 states and 16397 transitions. [2024-11-08 16:21:50,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 16:21:50,173 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 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 67 [2024-11-08 16:21:50,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:21:50,198 INFO L225 Difference]: With dead ends: 11572 [2024-11-08 16:21:50,199 INFO L226 Difference]: Without dead ends: 10234 [2024-11-08 16:21:50,204 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-08 16:21:50,205 INFO L432 NwaCegarLoop]: 1576 mSDtfsCounter, 4684 mSDsluCounter, 1760 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4684 SdHoareTripleChecker+Valid, 3336 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 16:21:50,206 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4684 Valid, 3336 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 16:21:50,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10234 states. [2024-11-08 16:21:50,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10234 to 7930. [2024-11-08 16:21:50,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7930 states, 7928 states have (on average 1.4207870837537842) internal successors, (11264), 7929 states have internal predecessors, (11264), 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) [2024-11-08 16:21:50,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7930 states to 7930 states and 11264 transitions. [2024-11-08 16:21:50,520 INFO L78 Accepts]: Start accepts. Automaton has 7930 states and 11264 transitions. Word has length 67 [2024-11-08 16:21:50,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:21:50,520 INFO L471 AbstractCegarLoop]: Abstraction has 7930 states and 11264 transitions. [2024-11-08 16:21:50,521 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 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) [2024-11-08 16:21:50,522 INFO L276 IsEmpty]: Start isEmpty. Operand 7930 states and 11264 transitions. [2024-11-08 16:21:50,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-08 16:21:50,523 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:21:50,524 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:21:50,524 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-08 16:21:50,524 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:21:50,525 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:21:50,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1016196152, now seen corresponding path program 1 times [2024-11-08 16:21:50,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:21:50,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193876617] [2024-11-08 16:21:50,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:21:50,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:21:50,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:21:50,706 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-08 16:21:50,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:21:50,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193876617] [2024-11-08 16:21:50,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193876617] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:21:50,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:21:50,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 16:21:50,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185248949] [2024-11-08 16:21:50,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:21:50,708 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 16:21:50,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:21:50,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 16:21:50,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-08 16:21:50,709 INFO L87 Difference]: Start difference. First operand 7930 states and 11264 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 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) [2024-11-08 16:21:51,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:21:51,166 INFO L93 Difference]: Finished difference Result 12908 states and 18245 transitions. [2024-11-08 16:21:51,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 16:21:51,167 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 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 67 [2024-11-08 16:21:51,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:21:51,194 INFO L225 Difference]: With dead ends: 12908 [2024-11-08 16:21:51,195 INFO L226 Difference]: Without dead ends: 11570 [2024-11-08 16:21:51,203 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-08 16:21:51,203 INFO L432 NwaCegarLoop]: 1575 mSDtfsCounter, 4654 mSDsluCounter, 1798 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4654 SdHoareTripleChecker+Valid, 3373 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 16:21:51,204 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4654 Valid, 3373 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 16:21:51,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11570 states. [2024-11-08 16:21:51,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11570 to 9266. [2024-11-08 16:21:51,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9266 states, 9264 states have (on average 1.415371329879102) internal successors, (13112), 9265 states have internal predecessors, (13112), 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) [2024-11-08 16:21:51,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9266 states to 9266 states and 13112 transitions. [2024-11-08 16:21:51,712 INFO L78 Accepts]: Start accepts. Automaton has 9266 states and 13112 transitions. Word has length 67 [2024-11-08 16:21:51,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:21:51,712 INFO L471 AbstractCegarLoop]: Abstraction has 9266 states and 13112 transitions. [2024-11-08 16:21:51,712 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 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) [2024-11-08 16:21:51,712 INFO L276 IsEmpty]: Start isEmpty. Operand 9266 states and 13112 transitions. [2024-11-08 16:21:51,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-08 16:21:51,714 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:21:51,715 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:21:51,715 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-08 16:21:51,715 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:21:51,715 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:21:51,716 INFO L85 PathProgramCache]: Analyzing trace with hash 631665112, now seen corresponding path program 1 times [2024-11-08 16:21:51,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:21:51,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627540858] [2024-11-08 16:21:51,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:21:51,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:21:51,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:21:51,865 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:21:51,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:21:51,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627540858] [2024-11-08 16:21:51,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627540858] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:21:51,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:21:51,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:21:51,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793750800] [2024-11-08 16:21:51,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:21:51,869 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:21:51,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:21:51,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:21:51,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:21:51,871 INFO L87 Difference]: Start difference. First operand 9266 states and 13112 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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) [2024-11-08 16:21:52,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:21:52,149 INFO L93 Difference]: Finished difference Result 16246 states and 22778 transitions. [2024-11-08 16:21:52,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:21:52,149 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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 68 [2024-11-08 16:21:52,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:21:52,172 INFO L225 Difference]: With dead ends: 16246 [2024-11-08 16:21:52,172 INFO L226 Difference]: Without dead ends: 9268 [2024-11-08 16:21:52,183 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:21:52,184 INFO L432 NwaCegarLoop]: 1553 mSDtfsCounter, 37 mSDsluCounter, 1514 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 3067 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 16:21:52,184 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 3067 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:21:52,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9268 states. [2024-11-08 16:21:52,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9268 to 9266. [2024-11-08 16:21:52,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9266 states, 9264 states have (on average 1.401986183074266) internal successors, (12988), 9265 states have internal predecessors, (12988), 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) [2024-11-08 16:21:52,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9266 states to 9266 states and 12988 transitions. [2024-11-08 16:21:52,530 INFO L78 Accepts]: Start accepts. Automaton has 9266 states and 12988 transitions. Word has length 68 [2024-11-08 16:21:52,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:21:52,530 INFO L471 AbstractCegarLoop]: Abstraction has 9266 states and 12988 transitions. [2024-11-08 16:21:52,531 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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) [2024-11-08 16:21:52,531 INFO L276 IsEmpty]: Start isEmpty. Operand 9266 states and 12988 transitions. [2024-11-08 16:21:52,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-08 16:21:52,533 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:21:52,533 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:21:52,533 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-08 16:21:52,533 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:21:52,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:21:52,534 INFO L85 PathProgramCache]: Analyzing trace with hash 1338835776, now seen corresponding path program 1 times [2024-11-08 16:21:52,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:21:52,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156963766] [2024-11-08 16:21:52,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:21:52,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:21:52,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:21:52,694 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:21:52,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:21:52,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156963766] [2024-11-08 16:21:52,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156963766] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:21:52,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:21:52,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:21:52,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533878172] [2024-11-08 16:21:52,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:21:52,695 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:21:52,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:21:52,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:21:52,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:21:52,696 INFO L87 Difference]: Start difference. First operand 9266 states and 12988 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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) [2024-11-08 16:21:52,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:21:52,837 INFO L93 Difference]: Finished difference Result 11928 states and 16661 transitions. [2024-11-08 16:21:52,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:21:52,838 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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 69 [2024-11-08 16:21:52,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:21:52,850 INFO L225 Difference]: With dead ends: 11928 [2024-11-08 16:21:52,850 INFO L226 Difference]: Without dead ends: 4950 [2024-11-08 16:21:52,858 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:21:52,859 INFO L432 NwaCegarLoop]: 1551 mSDtfsCounter, 31 mSDsluCounter, 1513 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 3064 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 16:21:52,859 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 3064 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:21:52,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4950 states. [2024-11-08 16:21:53,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4950 to 4941. [2024-11-08 16:21:53,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4941 states, 4939 states have (on average 1.4308564486738207) internal successors, (7067), 4940 states have internal predecessors, (7067), 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) [2024-11-08 16:21:53,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4941 states to 4941 states and 7067 transitions. [2024-11-08 16:21:53,026 INFO L78 Accepts]: Start accepts. Automaton has 4941 states and 7067 transitions. Word has length 69 [2024-11-08 16:21:53,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:21:53,027 INFO L471 AbstractCegarLoop]: Abstraction has 4941 states and 7067 transitions. [2024-11-08 16:21:53,027 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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) [2024-11-08 16:21:53,027 INFO L276 IsEmpty]: Start isEmpty. Operand 4941 states and 7067 transitions. [2024-11-08 16:21:53,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-08 16:21:53,029 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:21:53,029 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:21:53,029 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-08 16:21:53,029 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:21:53,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:21:53,030 INFO L85 PathProgramCache]: Analyzing trace with hash 634449354, now seen corresponding path program 1 times [2024-11-08 16:21:53,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:21:53,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157178066] [2024-11-08 16:21:53,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:21:53,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:21:53,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:21:53,191 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:21:53,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:21:53,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157178066] [2024-11-08 16:21:53,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157178066] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:21:53,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:21:53,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:21:53,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255917053] [2024-11-08 16:21:53,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:21:53,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:21:53,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:21:53,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:21:53,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:21:53,194 INFO L87 Difference]: Start difference. First operand 4941 states and 7067 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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) [2024-11-08 16:21:53,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:21:53,276 INFO L93 Difference]: Finished difference Result 6265 states and 8873 transitions. [2024-11-08 16:21:53,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:21:53,277 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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 70 [2024-11-08 16:21:53,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:21:53,286 INFO L225 Difference]: With dead ends: 6265 [2024-11-08 16:21:53,286 INFO L226 Difference]: Without dead ends: 3623 [2024-11-08 16:21:53,291 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:21:53,292 INFO L432 NwaCegarLoop]: 1545 mSDtfsCounter, 33 mSDsluCounter, 1498 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 3043 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 16:21:53,292 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 3043 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:21:53,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3623 states. [2024-11-08 16:21:53,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3623 to 3621. [2024-11-08 16:21:53,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3621 states, 3619 states have (on average 1.4481901077645758) internal successors, (5241), 3620 states have internal predecessors, (5241), 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) [2024-11-08 16:21:53,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3621 states to 3621 states and 5241 transitions. [2024-11-08 16:21:53,485 INFO L78 Accepts]: Start accepts. Automaton has 3621 states and 5241 transitions. Word has length 70 [2024-11-08 16:21:53,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:21:53,485 INFO L471 AbstractCegarLoop]: Abstraction has 3621 states and 5241 transitions. [2024-11-08 16:21:53,485 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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) [2024-11-08 16:21:53,485 INFO L276 IsEmpty]: Start isEmpty. Operand 3621 states and 5241 transitions. [2024-11-08 16:21:53,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-08 16:21:53,487 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:21:53,487 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:21:53,487 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-08 16:21:53,487 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:21:53,488 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:21:53,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1930039236, now seen corresponding path program 1 times [2024-11-08 16:21:53,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:21:53,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510043549] [2024-11-08 16:21:53,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:21:53,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:21:53,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:21:53,630 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:21:53,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:21:53,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510043549] [2024-11-08 16:21:53,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510043549] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:21:53,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:21:53,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:21:53,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825500775] [2024-11-08 16:21:53,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:21:53,633 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:21:53,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:21:53,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:21:53,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:21:53,634 INFO L87 Difference]: Start difference. First operand 3621 states and 5241 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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) [2024-11-08 16:21:53,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:21:53,691 INFO L93 Difference]: Finished difference Result 4285 states and 6134 transitions. [2024-11-08 16:21:53,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:21:53,692 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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 72 [2024-11-08 16:21:53,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:21:53,699 INFO L225 Difference]: With dead ends: 4285 [2024-11-08 16:21:53,699 INFO L226 Difference]: Without dead ends: 2963 [2024-11-08 16:21:53,702 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:21:53,702 INFO L432 NwaCegarLoop]: 1538 mSDtfsCounter, 30 mSDsluCounter, 1490 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 3028 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 16:21:53,703 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 3028 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:21:53,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2963 states. [2024-11-08 16:21:53,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2963 to 2961. [2024-11-08 16:21:53,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2961 states, 2959 states have (on average 1.4663737749239607) internal successors, (4339), 2960 states have internal predecessors, (4339), 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) [2024-11-08 16:21:53,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2961 states to 2961 states and 4339 transitions. [2024-11-08 16:21:53,776 INFO L78 Accepts]: Start accepts. Automaton has 2961 states and 4339 transitions. Word has length 72 [2024-11-08 16:21:53,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:21:53,777 INFO L471 AbstractCegarLoop]: Abstraction has 2961 states and 4339 transitions. [2024-11-08 16:21:53,777 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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) [2024-11-08 16:21:53,777 INFO L276 IsEmpty]: Start isEmpty. Operand 2961 states and 4339 transitions. [2024-11-08 16:21:53,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-08 16:21:53,780 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:21:53,781 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:21:53,781 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-08 16:21:53,782 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:21:53,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:21:53,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1270913326, now seen corresponding path program 1 times [2024-11-08 16:21:53,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:21:53,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211524274] [2024-11-08 16:21:53,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:21:53,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:21:53,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:21:56,010 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:21:56,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:21:56,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211524274] [2024-11-08 16:21:56,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211524274] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:21:56,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [881071154] [2024-11-08 16:21:56,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:21:56,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:21:56,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ec5c757-8749-48f0-9ce7-3544b5f8247f/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:21:56,013 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ec5c757-8749-48f0-9ce7-3544b5f8247f/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:21:56,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ec5c757-8749-48f0-9ce7-3544b5f8247f/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 16:21:56,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:21:56,183 INFO L255 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-08 16:21:56,189 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:21:56,729 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:21:56,729 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:21:57,569 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:21:57,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [881071154] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:21:57,570 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:21:57,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 7, 6] total 22 [2024-11-08 16:21:57,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447365147] [2024-11-08 16:21:57,570 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:21:57,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-08 16:21:57,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:21:57,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-08 16:21:57,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=394, Unknown=0, NotChecked=0, Total=462 [2024-11-08 16:21:57,573 INFO L87 Difference]: Start difference. First operand 2961 states and 4339 transitions. Second operand has 22 states, 22 states have (on average 9.5) internal successors, (209), 22 states have internal predecessors, (209), 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) [2024-11-08 16:22:06,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:22:06,293 INFO L93 Difference]: Finished difference Result 8877 states and 12015 transitions. [2024-11-08 16:22:06,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2024-11-08 16:22:06,293 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 9.5) internal successors, (209), 22 states have internal predecessors, (209), 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 74 [2024-11-08 16:22:06,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:22:06,311 INFO L225 Difference]: With dead ends: 8877 [2024-11-08 16:22:06,311 INFO L226 Difference]: Without dead ends: 8141 [2024-11-08 16:22:06,317 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4073 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=1738, Invalid=9392, Unknown=0, NotChecked=0, Total=11130 [2024-11-08 16:22:06,318 INFO L432 NwaCegarLoop]: 1526 mSDtfsCounter, 16442 mSDsluCounter, 8129 mSDsCounter, 0 mSdLazyCounter, 1869 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16442 SdHoareTripleChecker+Valid, 9655 SdHoareTripleChecker+Invalid, 1948 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1869 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-08 16:22:06,319 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16442 Valid, 9655 Invalid, 1948 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [79 Valid, 1869 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-08 16:22:06,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8141 states. [2024-11-08 16:22:06,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8141 to 7403. [2024-11-08 16:22:06,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7403 states, 7401 states have (on average 1.3533306309958113) internal successors, (10016), 7402 states have internal predecessors, (10016), 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) [2024-11-08 16:22:06,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7403 states to 7403 states and 10016 transitions. [2024-11-08 16:22:06,621 INFO L78 Accepts]: Start accepts. Automaton has 7403 states and 10016 transitions. Word has length 74 [2024-11-08 16:22:06,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:22:06,621 INFO L471 AbstractCegarLoop]: Abstraction has 7403 states and 10016 transitions. [2024-11-08 16:22:06,622 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 9.5) internal successors, (209), 22 states have internal predecessors, (209), 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) [2024-11-08 16:22:06,622 INFO L276 IsEmpty]: Start isEmpty. Operand 7403 states and 10016 transitions. [2024-11-08 16:22:06,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-08 16:22:06,623 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:22:06,624 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:22:06,651 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ec5c757-8749-48f0-9ce7-3544b5f8247f/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 16:22:06,824 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ec5c757-8749-48f0-9ce7-3544b5f8247f/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:22:06,825 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:22:06,825 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:22:06,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1182538012, now seen corresponding path program 1 times [2024-11-08 16:22:06,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:22:06,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754268331] [2024-11-08 16:22:06,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:22:06,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:22:06,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:22:09,955 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:22:09,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:22:09,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754268331] [2024-11-08 16:22:09,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754268331] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:22:09,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [89946900] [2024-11-08 16:22:09,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:22:09,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:22:09,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ec5c757-8749-48f0-9ce7-3544b5f8247f/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:22:09,957 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ec5c757-8749-48f0-9ce7-3544b5f8247f/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:22:09,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ec5c757-8749-48f0-9ce7-3544b5f8247f/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 16:22:10,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:22:10,129 INFO L255 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-08 16:22:10,132 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:22:10,699 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:22:10,699 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:22:12,099 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:22:12,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [89946900] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:22:12,099 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:22:12,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 27 [2024-11-08 16:22:12,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904143571] [2024-11-08 16:22:12,100 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:22:12,100 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-08 16:22:12,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:22:12,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-08 16:22:12,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=649, Unknown=0, NotChecked=0, Total=756 [2024-11-08 16:22:12,102 INFO L87 Difference]: Start difference. First operand 7403 states and 10016 transitions. Second operand has 28 states, 28 states have (on average 6.892857142857143) internal successors, (193), 27 states have internal predecessors, (193), 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) [2024-11-08 16:22:14,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:22:14,852 INFO L93 Difference]: Finished difference Result 27655 states and 36132 transitions. [2024-11-08 16:22:14,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-08 16:22:14,853 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 6.892857142857143) internal successors, (193), 27 states have internal predecessors, (193), 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 75 [2024-11-08 16:22:14,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:22:14,902 INFO L225 Difference]: With dead ends: 27655 [2024-11-08 16:22:14,902 INFO L226 Difference]: Without dead ends: 22617 [2024-11-08 16:22:14,913 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 714 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=582, Invalid=2388, Unknown=0, NotChecked=0, Total=2970 [2024-11-08 16:22:14,914 INFO L432 NwaCegarLoop]: 1501 mSDtfsCounter, 22956 mSDsluCounter, 5017 mSDsCounter, 0 mSdLazyCounter, 696 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22956 SdHoareTripleChecker+Valid, 6518 SdHoareTripleChecker+Invalid, 731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-08 16:22:14,915 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22956 Valid, 6518 Invalid, 731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 696 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-08 16:22:14,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22617 states. [2024-11-08 16:22:15,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22617 to 22453. [2024-11-08 16:22:16,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22453 states, 22451 states have (on average 1.301812836844684) internal successors, (29227), 22452 states have internal predecessors, (29227), 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) [2024-11-08 16:22:16,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22453 states to 22453 states and 29227 transitions. [2024-11-08 16:22:16,054 INFO L78 Accepts]: Start accepts. Automaton has 22453 states and 29227 transitions. Word has length 75 [2024-11-08 16:22:16,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:22:16,055 INFO L471 AbstractCegarLoop]: Abstraction has 22453 states and 29227 transitions. [2024-11-08 16:22:16,055 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 6.892857142857143) internal successors, (193), 27 states have internal predecessors, (193), 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) [2024-11-08 16:22:16,056 INFO L276 IsEmpty]: Start isEmpty. Operand 22453 states and 29227 transitions. [2024-11-08 16:22:16,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-08 16:22:16,058 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:22:16,058 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:22:16,084 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ec5c757-8749-48f0-9ce7-3544b5f8247f/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-08 16:22:16,262 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ec5c757-8749-48f0-9ce7-3544b5f8247f/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:22:16,263 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:22:16,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:22:16,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1063832804, now seen corresponding path program 1 times [2024-11-08 16:22:16,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:22:16,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734745519] [2024-11-08 16:22:16,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:22:16,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:22:16,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:22:17,203 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:22:17,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:22:17,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734745519] [2024-11-08 16:22:17,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734745519] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:22:17,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [765346108] [2024-11-08 16:22:17,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:22:17,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:22:17,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ec5c757-8749-48f0-9ce7-3544b5f8247f/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:22:17,208 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ec5c757-8749-48f0-9ce7-3544b5f8247f/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:22:17,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ec5c757-8749-48f0-9ce7-3544b5f8247f/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 16:22:17,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:22:17,399 INFO L255 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-08 16:22:17,406 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:22:18,429 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:22:18,429 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:22:20,956 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:22:20,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [765346108] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:22:20,957 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:22:20,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 11] total 28 [2024-11-08 16:22:20,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82229517] [2024-11-08 16:22:20,957 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:22:20,958 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-08 16:22:20,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:22:20,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-08 16:22:20,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=667, Unknown=0, NotChecked=0, Total=756 [2024-11-08 16:22:20,959 INFO L87 Difference]: Start difference. First operand 22453 states and 29227 transitions. Second operand has 28 states, 28 states have (on average 6.964285714285714) internal successors, (195), 28 states have internal predecessors, (195), 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) [2024-11-08 16:22:24,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:22:24,895 INFO L93 Difference]: Finished difference Result 40181 states and 51810 transitions. [2024-11-08 16:22:24,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-08 16:22:24,896 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 6.964285714285714) internal successors, (195), 28 states have internal predecessors, (195), 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 75 [2024-11-08 16:22:24,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:22:24,939 INFO L225 Difference]: With dead ends: 40181 [2024-11-08 16:22:24,940 INFO L226 Difference]: Without dead ends: 21255 [2024-11-08 16:22:24,971 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 648 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=702, Invalid=2604, Unknown=0, NotChecked=0, Total=3306 [2024-11-08 16:22:24,972 INFO L432 NwaCegarLoop]: 1491 mSDtfsCounter, 18565 mSDsluCounter, 10613 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18565 SdHoareTripleChecker+Valid, 12104 SdHoareTripleChecker+Invalid, 631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-08 16:22:24,973 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18565 Valid, 12104 Invalid, 631 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [46 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-08 16:22:24,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21255 states. [2024-11-08 16:22:26,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21255 to 20183. [2024-11-08 16:22:26,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20183 states, 20181 states have (on average 1.2843763936375798) internal successors, (25920), 20182 states have internal predecessors, (25920), 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) [2024-11-08 16:22:26,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20183 states to 20183 states and 25920 transitions. [2024-11-08 16:22:26,631 INFO L78 Accepts]: Start accepts. Automaton has 20183 states and 25920 transitions. Word has length 75 [2024-11-08 16:22:26,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:22:26,632 INFO L471 AbstractCegarLoop]: Abstraction has 20183 states and 25920 transitions. [2024-11-08 16:22:26,632 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 6.964285714285714) internal successors, (195), 28 states have internal predecessors, (195), 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) [2024-11-08 16:22:26,632 INFO L276 IsEmpty]: Start isEmpty. Operand 20183 states and 25920 transitions. [2024-11-08 16:22:26,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-08 16:22:26,634 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:22:26,634 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:22:26,664 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ec5c757-8749-48f0-9ce7-3544b5f8247f/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-08 16:22:26,835 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ec5c757-8749-48f0-9ce7-3544b5f8247f/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-08 16:22:26,836 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:22:26,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:22:26,837 INFO L85 PathProgramCache]: Analyzing trace with hash -431742720, now seen corresponding path program 1 times [2024-11-08 16:22:26,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:22:26,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829105727] [2024-11-08 16:22:26,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:22:26,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:22:26,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:22:27,383 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:22:27,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:22:27,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829105727] [2024-11-08 16:22:27,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829105727] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:22:27,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1176145783] [2024-11-08 16:22:27,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:22:27,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:22:27,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ec5c757-8749-48f0-9ce7-3544b5f8247f/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:22:27,387 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ec5c757-8749-48f0-9ce7-3544b5f8247f/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:22:27,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ec5c757-8749-48f0-9ce7-3544b5f8247f/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 16:22:27,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:22:27,585 INFO L255 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-08 16:22:27,592 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:22:28,478 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:22:28,479 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:22:30,051 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:22:30,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1176145783] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:22:30,051 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:22:30,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 13] total 30 [2024-11-08 16:22:30,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284021133] [2024-11-08 16:22:30,052 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:22:30,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-08 16:22:30,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:22:30,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-08 16:22:30,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=708, Unknown=0, NotChecked=0, Total=870 [2024-11-08 16:22:30,054 INFO L87 Difference]: Start difference. First operand 20183 states and 25920 transitions. Second operand has 30 states, 30 states have (on average 6.6) internal successors, (198), 30 states have internal predecessors, (198), 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) [2024-11-08 16:22:31,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:22:31,565 INFO L93 Difference]: Finished difference Result 37949 states and 48401 transitions. [2024-11-08 16:22:31,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-08 16:22:31,566 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 6.6) internal successors, (198), 30 states have internal predecessors, (198), 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 76 [2024-11-08 16:22:31,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:22:31,601 INFO L225 Difference]: With dead ends: 37949 [2024-11-08 16:22:31,601 INFO L226 Difference]: Without dead ends: 20943 [2024-11-08 16:22:31,619 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 431 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=472, Invalid=1508, Unknown=0, NotChecked=0, Total=1980 [2024-11-08 16:22:31,620 INFO L432 NwaCegarLoop]: 1500 mSDtfsCounter, 17844 mSDsluCounter, 7801 mSDsCounter, 0 mSdLazyCounter, 499 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17844 SdHoareTripleChecker+Valid, 9301 SdHoareTripleChecker+Invalid, 524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-08 16:22:31,620 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17844 Valid, 9301 Invalid, 524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 499 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-08 16:22:31,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20943 states. [2024-11-08 16:22:32,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20943 to 19727. [2024-11-08 16:22:32,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19727 states, 19725 states have (on average 1.273764258555133) internal successors, (25125), 19726 states have internal predecessors, (25125), 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) [2024-11-08 16:22:32,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19727 states to 19727 states and 25125 transitions. [2024-11-08 16:22:32,914 INFO L78 Accepts]: Start accepts. Automaton has 19727 states and 25125 transitions. Word has length 76 [2024-11-08 16:22:32,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:22:32,915 INFO L471 AbstractCegarLoop]: Abstraction has 19727 states and 25125 transitions. [2024-11-08 16:22:32,915 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 6.6) internal successors, (198), 30 states have internal predecessors, (198), 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) [2024-11-08 16:22:32,915 INFO L276 IsEmpty]: Start isEmpty. Operand 19727 states and 25125 transitions. [2024-11-08 16:22:32,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-08 16:22:32,917 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:22:32,917 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:22:32,944 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ec5c757-8749-48f0-9ce7-3544b5f8247f/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-08 16:22:33,121 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ec5c757-8749-48f0-9ce7-3544b5f8247f/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-08 16:22:33,122 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:22:33,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:22:33,123 INFO L85 PathProgramCache]: Analyzing trace with hash 490402816, now seen corresponding path program 1 times [2024-11-08 16:22:33,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:22:33,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113353123] [2024-11-08 16:22:33,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:22:33,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:22:33,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:22:33,566 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:22:33,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:22:33,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113353123] [2024-11-08 16:22:33,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113353123] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:22:33,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1243593506] [2024-11-08 16:22:33,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:22:33,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:22:33,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ec5c757-8749-48f0-9ce7-3544b5f8247f/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:22:33,568 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ec5c757-8749-48f0-9ce7-3544b5f8247f/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:22:33,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ec5c757-8749-48f0-9ce7-3544b5f8247f/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 16:22:33,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:22:33,752 INFO L255 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-08 16:22:33,755 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:22:34,269 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:22:34,270 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:22:35,131 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:22:35,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1243593506] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:22:35,132 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:22:35,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2024-11-08 16:22:35,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144627800] [2024-11-08 16:22:35,132 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:22:35,132 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-08 16:22:35,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:22:35,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-08 16:22:35,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=407, Unknown=0, NotChecked=0, Total=506 [2024-11-08 16:22:35,134 INFO L87 Difference]: Start difference. First operand 19727 states and 25125 transitions. Second operand has 23 states, 23 states have (on average 7.217391304347826) internal successors, (166), 22 states have internal predecessors, (166), 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) [2024-11-08 16:22:36,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:22:36,252 INFO L93 Difference]: Finished difference Result 36357 states and 45803 transitions. [2024-11-08 16:22:36,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-08 16:22:36,253 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 7.217391304347826) internal successors, (166), 22 states have internal predecessors, (166), 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 76 [2024-11-08 16:22:36,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:22:36,283 INFO L225 Difference]: With dead ends: 36357 [2024-11-08 16:22:36,283 INFO L226 Difference]: Without dead ends: 19727 [2024-11-08 16:22:36,294 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=247, Invalid=745, Unknown=0, NotChecked=0, Total=992 [2024-11-08 16:22:36,295 INFO L432 NwaCegarLoop]: 1492 mSDtfsCounter, 12159 mSDsluCounter, 3128 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12159 SdHoareTripleChecker+Valid, 4620 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 16:22:36,296 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12159 Valid, 4620 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 16:22:36,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19727 states. [2024-11-08 16:22:37,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19727 to 19727. [2024-11-08 16:22:37,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19727 states, 19725 states have (on average 1.2737135614702155) internal successors, (25124), 19726 states have internal predecessors, (25124), 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) [2024-11-08 16:22:37,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19727 states to 19727 states and 25124 transitions. [2024-11-08 16:22:37,177 INFO L78 Accepts]: Start accepts. Automaton has 19727 states and 25124 transitions. Word has length 76 [2024-11-08 16:22:37,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:22:37,177 INFO L471 AbstractCegarLoop]: Abstraction has 19727 states and 25124 transitions. [2024-11-08 16:22:37,177 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 7.217391304347826) internal successors, (166), 22 states have internal predecessors, (166), 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) [2024-11-08 16:22:37,177 INFO L276 IsEmpty]: Start isEmpty. Operand 19727 states and 25124 transitions. [2024-11-08 16:22:37,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-08 16:22:37,178 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:22:37,179 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:22:37,198 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ec5c757-8749-48f0-9ce7-3544b5f8247f/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-08 16:22:37,379 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ec5c757-8749-48f0-9ce7-3544b5f8247f/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-08 16:22:37,379 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:22:37,380 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:22:37,380 INFO L85 PathProgramCache]: Analyzing trace with hash 338355724, now seen corresponding path program 1 times [2024-11-08 16:22:37,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:22:37,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270258933] [2024-11-08 16:22:37,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:22:37,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:22:37,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:22:40,790 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:22:40,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:22:40,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270258933] [2024-11-08 16:22:40,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270258933] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:22:40,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1085578669] [2024-11-08 16:22:40,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:22:40,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:22:40,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ec5c757-8749-48f0-9ce7-3544b5f8247f/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:22:40,792 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ec5c757-8749-48f0-9ce7-3544b5f8247f/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:22:40,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ec5c757-8749-48f0-9ce7-3544b5f8247f/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 16:22:40,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:22:40,997 INFO L255 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 57 conjuncts are in the unsatisfiable core [2024-11-08 16:22:41,004 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:22:48,399 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:22:48,400 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:22:58,464 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:22:58,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1085578669] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:22:58,464 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:22:58,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 28, 25] total 74 [2024-11-08 16:22:58,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565902405] [2024-11-08 16:22:58,465 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:22:58,465 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2024-11-08 16:22:58,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:22:58,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2024-11-08 16:22:58,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=676, Invalid=4726, Unknown=0, NotChecked=0, Total=5402 [2024-11-08 16:22:58,469 INFO L87 Difference]: Start difference. First operand 19727 states and 25124 transitions. Second operand has 74 states, 74 states have (on average 2.9324324324324325) internal successors, (217), 74 states have internal predecessors, (217), 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) [2024-11-08 16:23:47,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:23:47,058 INFO L93 Difference]: Finished difference Result 40336 states and 51006 transitions. [2024-11-08 16:23:47,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2024-11-08 16:23:47,059 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 2.9324324324324325) internal successors, (217), 74 states have internal predecessors, (217), 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 77 [2024-11-08 16:23:47,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:23:47,085 INFO L225 Difference]: With dead ends: 40336 [2024-11-08 16:23:47,085 INFO L226 Difference]: Without dead ends: 29366 [2024-11-08 16:23:47,096 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6379 ImplicationChecksByTransitivity, 50.8s TimeCoverageRelationStatistics Valid=3634, Invalid=19016, Unknown=0, NotChecked=0, Total=22650 [2024-11-08 16:23:47,097 INFO L432 NwaCegarLoop]: 1491 mSDtfsCounter, 25354 mSDsluCounter, 21748 mSDsCounter, 0 mSdLazyCounter, 2970 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25354 SdHoareTripleChecker+Valid, 23239 SdHoareTripleChecker+Invalid, 3063 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 2970 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-11-08 16:23:47,097 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25354 Valid, 23239 Invalid, 3063 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [93 Valid, 2970 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2024-11-08 16:23:47,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29366 states. [2024-11-08 16:23:48,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29366 to 20316. [2024-11-08 16:23:48,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20316 states, 20314 states have (on average 1.2711922811853893) internal successors, (25823), 20315 states have internal predecessors, (25823), 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) [2024-11-08 16:23:48,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20316 states to 20316 states and 25823 transitions. [2024-11-08 16:23:48,343 INFO L78 Accepts]: Start accepts. Automaton has 20316 states and 25823 transitions. Word has length 77 [2024-11-08 16:23:48,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:23:48,343 INFO L471 AbstractCegarLoop]: Abstraction has 20316 states and 25823 transitions. [2024-11-08 16:23:48,344 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 2.9324324324324325) internal successors, (217), 74 states have internal predecessors, (217), 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) [2024-11-08 16:23:48,344 INFO L276 IsEmpty]: Start isEmpty. Operand 20316 states and 25823 transitions. [2024-11-08 16:23:48,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-08 16:23:48,346 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:23:48,346 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:23:48,369 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ec5c757-8749-48f0-9ce7-3544b5f8247f/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-08 16:23:48,546 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ec5c757-8749-48f0-9ce7-3544b5f8247f/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-08 16:23:48,547 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:23:48,547 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:23:48,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1331806592, now seen corresponding path program 1 times [2024-11-08 16:23:48,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:23:48,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764153312] [2024-11-08 16:23:48,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:23:48,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:23:48,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:23:49,744 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:23:49,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:23:49,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764153312] [2024-11-08 16:23:49,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764153312] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:23:49,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1480636449] [2024-11-08 16:23:49,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:23:49,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:23:49,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ec5c757-8749-48f0-9ce7-3544b5f8247f/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:23:49,747 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ec5c757-8749-48f0-9ce7-3544b5f8247f/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:23:49,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ec5c757-8749-48f0-9ce7-3544b5f8247f/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-08 16:23:49,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:23:49,945 INFO L255 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-11-08 16:23:49,948 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:23:56,288 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:23:56,288 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:24:11,001 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:24:11,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1480636449] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:24:11,001 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:24:11,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 29, 29] total 67 [2024-11-08 16:24:11,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689760037] [2024-11-08 16:24:11,001 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:24:11,002 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2024-11-08 16:24:11,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:24:11,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2024-11-08 16:24:11,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=629, Invalid=3793, Unknown=0, NotChecked=0, Total=4422 [2024-11-08 16:24:11,005 INFO L87 Difference]: Start difference. First operand 20316 states and 25823 transitions. Second operand has 67 states, 67 states have (on average 3.08955223880597) internal successors, (207), 67 states have internal predecessors, (207), 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) [2024-11-08 16:26:17,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:26:17,551 INFO L93 Difference]: Finished difference Result 54882 states and 69738 transitions. [2024-11-08 16:26:17,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2024-11-08 16:26:17,552 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 3.08955223880597) internal successors, (207), 67 states have internal predecessors, (207), 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 78 [2024-11-08 16:26:17,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:26:17,587 INFO L225 Difference]: With dead ends: 54882 [2024-11-08 16:26:17,587 INFO L226 Difference]: Without dead ends: 47787 [2024-11-08 16:26:17,602 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 101 SyntacticMatches, 1 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11167 ImplicationChecksByTransitivity, 124.8s TimeCoverageRelationStatistics Valid=5412, Invalid=25038, Unknown=0, NotChecked=0, Total=30450 [2024-11-08 16:26:17,602 INFO L432 NwaCegarLoop]: 1500 mSDtfsCounter, 18442 mSDsluCounter, 21966 mSDsCounter, 0 mSdLazyCounter, 3611 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18442 SdHoareTripleChecker+Valid, 23466 SdHoareTripleChecker+Invalid, 3700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 3611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2024-11-08 16:26:17,603 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18442 Valid, 23466 Invalid, 3700 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [89 Valid, 3611 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2024-11-08 16:26:17,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47787 states. [2024-11-08 16:26:19,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47787 to 20155. [2024-11-08 16:26:19,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20155 states, 20153 states have (on average 1.2717709522155511) internal successors, (25630), 20154 states have internal predecessors, (25630), 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) [2024-11-08 16:26:19,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20155 states to 20155 states and 25630 transitions. [2024-11-08 16:26:19,422 INFO L78 Accepts]: Start accepts. Automaton has 20155 states and 25630 transitions. Word has length 78 [2024-11-08 16:26:19,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:26:19,422 INFO L471 AbstractCegarLoop]: Abstraction has 20155 states and 25630 transitions. [2024-11-08 16:26:19,423 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 3.08955223880597) internal successors, (207), 67 states have internal predecessors, (207), 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) [2024-11-08 16:26:19,423 INFO L276 IsEmpty]: Start isEmpty. Operand 20155 states and 25630 transitions. [2024-11-08 16:26:19,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-08 16:26:19,424 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:26:19,424 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:26:19,440 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ec5c757-8749-48f0-9ce7-3544b5f8247f/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-08 16:26:19,625 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ec5c757-8749-48f0-9ce7-3544b5f8247f/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-08 16:26:19,625 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:26:19,625 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:26:19,626 INFO L85 PathProgramCache]: Analyzing trace with hash -1334210978, now seen corresponding path program 1 times [2024-11-08 16:26:19,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:26:19,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366412509] [2024-11-08 16:26:19,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:26:19,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:26:19,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:26:21,301 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:26:21,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:26:21,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366412509] [2024-11-08 16:26:21,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366412509] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:26:21,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [146384712] [2024-11-08 16:26:21,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:26:21,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:26:21,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ec5c757-8749-48f0-9ce7-3544b5f8247f/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:26:21,304 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ec5c757-8749-48f0-9ce7-3544b5f8247f/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:26:21,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ec5c757-8749-48f0-9ce7-3544b5f8247f/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-08 16:26:21,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:26:21,440 INFO L255 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-08 16:26:21,442 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:26:24,650 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:26:24,650 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:26:30,012 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:26:30,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [146384712] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:26:30,012 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:26:30,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 19, 19] total 48 [2024-11-08 16:26:30,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046012377] [2024-11-08 16:26:30,013 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:26:30,013 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-11-08 16:26:30,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:26:30,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-11-08 16:26:30,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=274, Invalid=1982, Unknown=0, NotChecked=0, Total=2256 [2024-11-08 16:26:30,015 INFO L87 Difference]: Start difference. First operand 20155 states and 25630 transitions. Second operand has 48 states, 48 states have (on average 4.208333333333333) internal successors, (202), 48 states have internal predecessors, (202), 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) [2024-11-08 16:26:49,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:26:49,112 INFO L93 Difference]: Finished difference Result 46527 states and 59446 transitions. [2024-11-08 16:26:49,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2024-11-08 16:26:49,113 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 4.208333333333333) internal successors, (202), 48 states have internal predecessors, (202), 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 80 [2024-11-08 16:26:49,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:26:49,142 INFO L225 Difference]: With dead ends: 46527 [2024-11-08 16:26:49,142 INFO L226 Difference]: Without dead ends: 39430 [2024-11-08 16:26:49,149 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3077 ImplicationChecksByTransitivity, 16.9s TimeCoverageRelationStatistics Valid=1894, Invalid=8612, Unknown=0, NotChecked=0, Total=10506 [2024-11-08 16:26:49,149 INFO L432 NwaCegarLoop]: 1487 mSDtfsCounter, 20360 mSDsluCounter, 27233 mSDsCounter, 0 mSdLazyCounter, 1962 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20360 SdHoareTripleChecker+Valid, 28720 SdHoareTripleChecker+Invalid, 2018 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1962 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-08 16:26:49,150 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20360 Valid, 28720 Invalid, 2018 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [56 Valid, 1962 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-08 16:26:49,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39430 states. [2024-11-08 16:26:51,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39430 to 30086. [2024-11-08 16:26:51,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30086 states, 30084 states have (on average 1.2754952798829944) internal successors, (38372), 30085 states have internal predecessors, (38372), 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) [2024-11-08 16:26:51,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30086 states to 30086 states and 38372 transitions. [2024-11-08 16:26:51,255 INFO L78 Accepts]: Start accepts. Automaton has 30086 states and 38372 transitions. Word has length 80 [2024-11-08 16:26:51,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:26:51,255 INFO L471 AbstractCegarLoop]: Abstraction has 30086 states and 38372 transitions. [2024-11-08 16:26:51,255 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 4.208333333333333) internal successors, (202), 48 states have internal predecessors, (202), 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) [2024-11-08 16:26:51,256 INFO L276 IsEmpty]: Start isEmpty. Operand 30086 states and 38372 transitions. [2024-11-08 16:26:51,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-08 16:26:51,259 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:26:51,259 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:26:51,281 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ec5c757-8749-48f0-9ce7-3544b5f8247f/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-08 16:26:51,460 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ec5c757-8749-48f0-9ce7-3544b5f8247f/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-08 16:26:51,460 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:26:51,461 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:26:51,461 INFO L85 PathProgramCache]: Analyzing trace with hash -585728908, now seen corresponding path program 1 times [2024-11-08 16:26:51,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:26:51,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503066579] [2024-11-08 16:26:51,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:26:51,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:26:51,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:26:52,897 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 25 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:26:52,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:26:52,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503066579] [2024-11-08 16:26:52,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503066579] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:26:52,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2022784132] [2024-11-08 16:26:52,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:26:52,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:26:52,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ec5c757-8749-48f0-9ce7-3544b5f8247f/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:26:52,900 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ec5c757-8749-48f0-9ce7-3544b5f8247f/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:26:52,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ec5c757-8749-48f0-9ce7-3544b5f8247f/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-08 16:26:53,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:26:53,119 INFO L255 TraceCheckSpWp]: Trace formula consists of 528 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-08 16:26:53,122 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:26:54,680 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 23 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:26:54,681 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:26:57,174 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 17 proven. 89 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:26:57,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2022784132] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:26:57,175 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:26:57,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14, 11] total 38 [2024-11-08 16:26:57,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771031976] [2024-11-08 16:26:57,175 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:26:57,175 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-08 16:26:57,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:26:57,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-08 16:26:57,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=1279, Unknown=0, NotChecked=0, Total=1406 [2024-11-08 16:26:57,177 INFO L87 Difference]: Start difference. First operand 30086 states and 38372 transitions. Second operand has 38 states, 38 states have (on average 9.31578947368421) internal successors, (354), 38 states have internal predecessors, (354), 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) [2024-11-08 16:27:10,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:27:10,522 INFO L93 Difference]: Finished difference Result 79678 states and 100236 transitions. [2024-11-08 16:27:10,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2024-11-08 16:27:10,523 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 9.31578947368421) internal successors, (354), 38 states have internal predecessors, (354), 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 124 [2024-11-08 16:27:10,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:27:10,567 INFO L225 Difference]: With dead ends: 79678 [2024-11-08 16:27:10,567 INFO L226 Difference]: Without dead ends: 56965 [2024-11-08 16:27:10,577 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3900 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=2037, Invalid=12243, Unknown=0, NotChecked=0, Total=14280 [2024-11-08 16:27:10,578 INFO L432 NwaCegarLoop]: 1535 mSDtfsCounter, 23636 mSDsluCounter, 22021 mSDsCounter, 0 mSdLazyCounter, 2419 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23636 SdHoareTripleChecker+Valid, 23556 SdHoareTripleChecker+Invalid, 2495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 2419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-08 16:27:10,578 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23636 Valid, 23556 Invalid, 2495 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [76 Valid, 2419 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-08 16:27:10,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56965 states. [2024-11-08 16:27:12,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56965 to 25272. [2024-11-08 16:27:12,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25272 states, 25270 states have (on average 1.2661654135338345) internal successors, (31996), 25271 states have internal predecessors, (31996), 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) [2024-11-08 16:27:12,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25272 states to 25272 states and 31996 transitions. [2024-11-08 16:27:12,881 INFO L78 Accepts]: Start accepts. Automaton has 25272 states and 31996 transitions. Word has length 124 [2024-11-08 16:27:12,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:27:12,882 INFO L471 AbstractCegarLoop]: Abstraction has 25272 states and 31996 transitions. [2024-11-08 16:27:12,882 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 9.31578947368421) internal successors, (354), 38 states have internal predecessors, (354), 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) [2024-11-08 16:27:12,882 INFO L276 IsEmpty]: Start isEmpty. Operand 25272 states and 31996 transitions. [2024-11-08 16:27:12,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-08 16:27:12,886 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:27:12,887 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:27:12,910 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ec5c757-8749-48f0-9ce7-3544b5f8247f/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-08 16:27:13,087 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ec5c757-8749-48f0-9ce7-3544b5f8247f/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:27:13,089 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:27:13,090 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:27:13,090 INFO L85 PathProgramCache]: Analyzing trace with hash 610432372, now seen corresponding path program 1 times [2024-11-08 16:27:13,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:27:13,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677899517] [2024-11-08 16:27:13,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:27:13,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:27:13,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:14,213 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 16 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:27:14,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:27:14,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677899517] [2024-11-08 16:27:14,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677899517] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:27:14,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1546152315] [2024-11-08 16:27:14,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:27:14,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:27:14,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ec5c757-8749-48f0-9ce7-3544b5f8247f/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:27:14,217 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ec5c757-8749-48f0-9ce7-3544b5f8247f/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:27:14,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ec5c757-8749-48f0-9ce7-3544b5f8247f/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-08 16:27:14,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:14,418 INFO L255 TraceCheckSpWp]: Trace formula consists of 530 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-08 16:27:14,421 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:27:15,659 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 49 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:27:15,660 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:27:18,157 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 42 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:27:18,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1546152315] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:27:18,158 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:27:18,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11] total 33 [2024-11-08 16:27:18,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895173774] [2024-11-08 16:27:18,158 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:27:18,159 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-08 16:27:18,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:27:18,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-08 16:27:18,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=993, Unknown=0, NotChecked=0, Total=1122 [2024-11-08 16:27:18,160 INFO L87 Difference]: Start difference. First operand 25272 states and 31996 transitions. Second operand has 34 states, 34 states have (on average 10.058823529411764) internal successors, (342), 33 states have internal predecessors, (342), 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) [2024-11-08 16:27:24,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:27:24,838 INFO L93 Difference]: Finished difference Result 43170 states and 54131 transitions. [2024-11-08 16:27:24,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-08 16:27:24,839 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 10.058823529411764) internal successors, (342), 33 states have internal predecessors, (342), 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 124 [2024-11-08 16:27:24,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:27:24,863 INFO L225 Difference]: With dead ends: 43170 [2024-11-08 16:27:24,863 INFO L226 Difference]: Without dead ends: 25947 [2024-11-08 16:27:24,873 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 913 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=1045, Invalid=4067, Unknown=0, NotChecked=0, Total=5112 [2024-11-08 16:27:24,874 INFO L432 NwaCegarLoop]: 1593 mSDtfsCounter, 19652 mSDsluCounter, 14504 mSDsCounter, 0 mSdLazyCounter, 1535 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19652 SdHoareTripleChecker+Valid, 16097 SdHoareTripleChecker+Invalid, 1572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-08 16:27:24,876 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19652 Valid, 16097 Invalid, 1572 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [37 Valid, 1535 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-08 16:27:24,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25947 states. [2024-11-08 16:27:26,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25947 to 16919. [2024-11-08 16:27:26,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16919 states, 16917 states have (on average 1.2576697996098598) internal successors, (21276), 16918 states have internal predecessors, (21276), 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) [2024-11-08 16:27:26,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16919 states to 16919 states and 21276 transitions. [2024-11-08 16:27:26,568 INFO L78 Accepts]: Start accepts. Automaton has 16919 states and 21276 transitions. Word has length 124 [2024-11-08 16:27:26,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:27:26,568 INFO L471 AbstractCegarLoop]: Abstraction has 16919 states and 21276 transitions. [2024-11-08 16:27:26,568 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 10.058823529411764) internal successors, (342), 33 states have internal predecessors, (342), 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) [2024-11-08 16:27:26,569 INFO L276 IsEmpty]: Start isEmpty. Operand 16919 states and 21276 transitions. [2024-11-08 16:27:26,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-08 16:27:26,572 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:27:26,573 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:27:26,596 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ec5c757-8749-48f0-9ce7-3544b5f8247f/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-08 16:27:26,777 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ec5c757-8749-48f0-9ce7-3544b5f8247f/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:27:26,778 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:27:26,778 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:27:26,778 INFO L85 PathProgramCache]: Analyzing trace with hash 1562836688, now seen corresponding path program 1 times [2024-11-08 16:27:26,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:27:26,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377732698] [2024-11-08 16:27:26,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:27:26,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:27:26,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:28,003 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 35 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:27:28,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:27:28,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377732698] [2024-11-08 16:27:28,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377732698] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:27:28,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [124409171] [2024-11-08 16:27:28,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:27:28,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:27:28,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ec5c757-8749-48f0-9ce7-3544b5f8247f/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:27:28,007 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ec5c757-8749-48f0-9ce7-3544b5f8247f/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:27:28,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ec5c757-8749-48f0-9ce7-3544b5f8247f/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-08 16:27:28,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:28,226 INFO L255 TraceCheckSpWp]: Trace formula consists of 530 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-08 16:27:28,230 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:27:31,080 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 35 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:27:31,080 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:27:36,345 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 35 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:27:36,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [124409171] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:27:36,346 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:27:36,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 21, 22] total 53 [2024-11-08 16:27:36,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756652940] [2024-11-08 16:27:36,346 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:27:36,347 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-11-08 16:27:36,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:27:36,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-11-08 16:27:36,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=392, Invalid=2470, Unknown=0, NotChecked=0, Total=2862 [2024-11-08 16:27:36,348 INFO L87 Difference]: Start difference. First operand 16919 states and 21276 transitions. Second operand has 54 states, 54 states have (on average 6.166666666666667) internal successors, (333), 53 states have internal predecessors, (333), 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) [2024-11-08 16:27:49,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:27:49,747 INFO L93 Difference]: Finished difference Result 51777 states and 64234 transitions. [2024-11-08 16:27:49,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2024-11-08 16:27:49,748 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 6.166666666666667) internal successors, (333), 53 states have internal predecessors, (333), 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 125 [2024-11-08 16:27:49,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:27:49,796 INFO L225 Difference]: With dead ends: 51777 [2024-11-08 16:27:49,797 INFO L226 Difference]: Without dead ends: 39715 [2024-11-08 16:27:49,809 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5161 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=3192, Invalid=14630, Unknown=0, NotChecked=0, Total=17822 [2024-11-08 16:27:49,810 INFO L432 NwaCegarLoop]: 1571 mSDtfsCounter, 29969 mSDsluCounter, 22190 mSDsCounter, 0 mSdLazyCounter, 2010 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29969 SdHoareTripleChecker+Valid, 23761 SdHoareTripleChecker+Invalid, 2135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 2010 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-08 16:27:49,810 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29969 Valid, 23761 Invalid, 2135 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [125 Valid, 2010 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-08 16:27:49,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39715 states. [2024-11-08 16:27:53,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39715 to 32870. [2024-11-08 16:27:53,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32870 states, 32868 states have (on average 1.2284897164415236) internal successors, (40378), 32869 states have internal predecessors, (40378), 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) [2024-11-08 16:27:53,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32870 states to 32870 states and 40378 transitions. [2024-11-08 16:27:53,750 INFO L78 Accepts]: Start accepts. Automaton has 32870 states and 40378 transitions. Word has length 125 [2024-11-08 16:27:53,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:27:53,750 INFO L471 AbstractCegarLoop]: Abstraction has 32870 states and 40378 transitions. [2024-11-08 16:27:53,750 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 6.166666666666667) internal successors, (333), 53 states have internal predecessors, (333), 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) [2024-11-08 16:27:53,750 INFO L276 IsEmpty]: Start isEmpty. Operand 32870 states and 40378 transitions. [2024-11-08 16:27:53,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-08 16:27:53,755 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:27:53,755 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:27:53,781 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ec5c757-8749-48f0-9ce7-3544b5f8247f/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-08 16:27:53,956 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ec5c757-8749-48f0-9ce7-3544b5f8247f/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:27:53,956 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:27:53,956 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:27:53,957 INFO L85 PathProgramCache]: Analyzing trace with hash -65002840, now seen corresponding path program 1 times [2024-11-08 16:27:53,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:27:53,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831681564] [2024-11-08 16:27:53,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:27:53,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:27:54,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:55,067 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 34 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:27:55,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:27:55,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831681564] [2024-11-08 16:27:55,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831681564] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:27:55,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1406061872] [2024-11-08 16:27:55,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:27:55,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:27:55,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ec5c757-8749-48f0-9ce7-3544b5f8247f/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:27:55,070 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ec5c757-8749-48f0-9ce7-3544b5f8247f/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:27:55,072 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ec5c757-8749-48f0-9ce7-3544b5f8247f/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-08 16:27:55,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:55,303 INFO L255 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-08 16:27:55,307 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:27:57,321 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 57 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:27:57,321 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:27:58,574 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 57 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:27:58,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1406061872] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:27:58,574 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:27:58,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11, 11] total 31 [2024-11-08 16:27:58,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680014878] [2024-11-08 16:27:58,575 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:27:58,575 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-08 16:27:58,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:27:58,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-08 16:27:58,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=822, Unknown=0, NotChecked=0, Total=930 [2024-11-08 16:27:58,576 INFO L87 Difference]: Start difference. First operand 32870 states and 40378 transitions. Second operand has 31 states, 31 states have (on average 9.741935483870968) internal successors, (302), 31 states have internal predecessors, (302), 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) [2024-11-08 16:28:07,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:28:07,067 INFO L93 Difference]: Finished difference Result 66062 states and 80267 transitions. [2024-11-08 16:28:07,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-08 16:28:07,068 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 9.741935483870968) internal successors, (302), 31 states have internal predecessors, (302), 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 125 [2024-11-08 16:28:07,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:28:07,119 INFO L225 Difference]: With dead ends: 66062 [2024-11-08 16:28:07,119 INFO L226 Difference]: Without dead ends: 41390 [2024-11-08 16:28:07,136 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 247 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 694 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=726, Invalid=2934, Unknown=0, NotChecked=0, Total=3660 [2024-11-08 16:28:07,136 INFO L432 NwaCegarLoop]: 1577 mSDtfsCounter, 18055 mSDsluCounter, 11459 mSDsCounter, 0 mSdLazyCounter, 1275 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18055 SdHoareTripleChecker+Valid, 13036 SdHoareTripleChecker+Invalid, 1312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-08 16:28:07,137 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18055 Valid, 13036 Invalid, 1312 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [37 Valid, 1275 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-08 16:28:07,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41390 states. [2024-11-08 16:28:09,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41390 to 16391. [2024-11-08 16:28:09,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16391 states, 16389 states have (on average 1.245896637988895) internal successors, (20419), 16390 states have internal predecessors, (20419), 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) [2024-11-08 16:28:09,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16391 states to 16391 states and 20419 transitions. [2024-11-08 16:28:09,201 INFO L78 Accepts]: Start accepts. Automaton has 16391 states and 20419 transitions. Word has length 125 [2024-11-08 16:28:09,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:28:09,202 INFO L471 AbstractCegarLoop]: Abstraction has 16391 states and 20419 transitions. [2024-11-08 16:28:09,202 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 9.741935483870968) internal successors, (302), 31 states have internal predecessors, (302), 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) [2024-11-08 16:28:09,202 INFO L276 IsEmpty]: Start isEmpty. Operand 16391 states and 20419 transitions. [2024-11-08 16:28:09,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-08 16:28:09,204 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:28:09,204 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:28:09,228 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ec5c757-8749-48f0-9ce7-3544b5f8247f/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-08 16:28:09,405 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ec5c757-8749-48f0-9ce7-3544b5f8247f/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:28:09,405 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:28:09,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:28:09,406 INFO L85 PathProgramCache]: Analyzing trace with hash -2093378788, now seen corresponding path program 1 times [2024-11-08 16:28:09,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:28:09,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863363212] [2024-11-08 16:28:09,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:28:09,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:28:09,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:28:10,692 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 35 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:28:10,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:28:10,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863363212] [2024-11-08 16:28:10,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863363212] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:28:10,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756053703] [2024-11-08 16:28:10,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:28:10,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:28:10,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ec5c757-8749-48f0-9ce7-3544b5f8247f/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:28:10,696 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ec5c757-8749-48f0-9ce7-3544b5f8247f/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:28:10,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ec5c757-8749-48f0-9ce7-3544b5f8247f/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-08 16:28:10,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:28:10,907 INFO L255 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-08 16:28:10,909 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:28:14,902 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 35 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:28:14,902 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:28:20,018 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 35 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:28:20,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [756053703] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:28:20,019 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:28:20,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 20, 19] total 55 [2024-11-08 16:28:20,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329248401] [2024-11-08 16:28:20,019 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:28:20,020 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2024-11-08 16:28:20,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:28:20,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2024-11-08 16:28:20,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=247, Invalid=2723, Unknown=0, NotChecked=0, Total=2970 [2024-11-08 16:28:20,021 INFO L87 Difference]: Start difference. First operand 16391 states and 20419 transitions. Second operand has 55 states, 55 states have (on average 6.2) internal successors, (341), 55 states have internal predecessors, (341), 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) [2024-11-08 16:28:59,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:28:59,773 INFO L93 Difference]: Finished difference Result 45770 states and 55689 transitions. [2024-11-08 16:28:59,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2024-11-08 16:28:59,774 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 6.2) internal successors, (341), 55 states have internal predecessors, (341), 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 126 [2024-11-08 16:28:59,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:28:59,802 INFO L225 Difference]: With dead ends: 45770 [2024-11-08 16:28:59,802 INFO L226 Difference]: Without dead ends: 40450 [2024-11-08 16:28:59,809 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 216 SyntacticMatches, 1 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10047 ImplicationChecksByTransitivity, 33.4s TimeCoverageRelationStatistics Valid=5206, Invalid=28466, Unknown=0, NotChecked=0, Total=33672 [2024-11-08 16:28:59,810 INFO L432 NwaCegarLoop]: 1563 mSDtfsCounter, 20355 mSDsluCounter, 30382 mSDsCounter, 0 mSdLazyCounter, 2848 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20355 SdHoareTripleChecker+Valid, 31945 SdHoareTripleChecker+Invalid, 2966 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 2848 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-08 16:28:59,810 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20355 Valid, 31945 Invalid, 2966 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [118 Valid, 2848 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-08 16:28:59,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40450 states. [2024-11-08 16:29:02,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40450 to 18769. [2024-11-08 16:29:02,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18769 states, 18767 states have (on average 1.229125592795865) internal successors, (23067), 18768 states have internal predecessors, (23067), 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) [2024-11-08 16:29:02,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18769 states to 18769 states and 23067 transitions. [2024-11-08 16:29:02,565 INFO L78 Accepts]: Start accepts. Automaton has 18769 states and 23067 transitions. Word has length 126 [2024-11-08 16:29:02,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:29:02,565 INFO L471 AbstractCegarLoop]: Abstraction has 18769 states and 23067 transitions. [2024-11-08 16:29:02,566 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 6.2) internal successors, (341), 55 states have internal predecessors, (341), 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) [2024-11-08 16:29:02,566 INFO L276 IsEmpty]: Start isEmpty. Operand 18769 states and 23067 transitions. [2024-11-08 16:29:02,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-08 16:29:02,569 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:29:02,569 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:29:02,592 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ec5c757-8749-48f0-9ce7-3544b5f8247f/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-08 16:29:02,769 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ec5c757-8749-48f0-9ce7-3544b5f8247f/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-11-08 16:29:02,770 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:29:02,771 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:29:02,771 INFO L85 PathProgramCache]: Analyzing trace with hash -255976000, now seen corresponding path program 1 times [2024-11-08 16:29:02,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:29:02,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720668654] [2024-11-08 16:29:02,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:29:02,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:29:02,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:29:05,181 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 44 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:29:05,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:29:05,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720668654] [2024-11-08 16:29:05,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720668654] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:29:05,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1681635796] [2024-11-08 16:29:05,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:29:05,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:29:05,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ec5c757-8749-48f0-9ce7-3544b5f8247f/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:29:05,184 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ec5c757-8749-48f0-9ce7-3544b5f8247f/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:29:05,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ec5c757-8749-48f0-9ce7-3544b5f8247f/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-08 16:29:05,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:29:05,397 INFO L255 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-11-08 16:29:05,399 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:29:11,034 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 44 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:29:11,034 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:29:22,465 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 25 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:29:22,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1681635796] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:29:22,466 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:29:22,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 29, 27] total 78 [2024-11-08 16:29:22,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101265965] [2024-11-08 16:29:22,466 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:29:22,467 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2024-11-08 16:29:22,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:29:22,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2024-11-08 16:29:22,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=588, Invalid=5418, Unknown=0, NotChecked=0, Total=6006 [2024-11-08 16:29:22,468 INFO L87 Difference]: Start difference. First operand 18769 states and 23067 transitions. Second operand has 78 states, 78 states have (on average 4.397435897435898) internal successors, (343), 78 states have internal predecessors, (343), 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) [2024-11-08 16:30:47,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:30:47,195 INFO L93 Difference]: Finished difference Result 35218 states and 42778 transitions. [2024-11-08 16:30:47,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 155 states. [2024-11-08 16:30:47,195 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 78 states have (on average 4.397435897435898) internal successors, (343), 78 states have internal predecessors, (343), 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 126 [2024-11-08 16:30:47,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:30:47,216 INFO L225 Difference]: With dead ends: 35218 [2024-11-08 16:30:47,216 INFO L226 Difference]: Without dead ends: 26054 [2024-11-08 16:30:47,223 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 220 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16356 ImplicationChecksByTransitivity, 80.8s TimeCoverageRelationStatistics Valid=6497, Invalid=42565, Unknown=0, NotChecked=0, Total=49062 [2024-11-08 16:30:47,223 INFO L432 NwaCegarLoop]: 1530 mSDtfsCounter, 23009 mSDsluCounter, 40181 mSDsCounter, 0 mSdLazyCounter, 4432 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23009 SdHoareTripleChecker+Valid, 41711 SdHoareTripleChecker+Invalid, 4601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 4432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2024-11-08 16:30:47,224 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23009 Valid, 41711 Invalid, 4601 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [169 Valid, 4432 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2024-11-08 16:30:47,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26054 states. [2024-11-08 16:30:50,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26054 to 23703. [2024-11-08 16:30:50,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23703 states, 23701 states have (on average 1.2248428336357116) internal successors, (29030), 23702 states have internal predecessors, (29030), 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) [2024-11-08 16:30:50,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23703 states to 23703 states and 29030 transitions. [2024-11-08 16:30:50,720 INFO L78 Accepts]: Start accepts. Automaton has 23703 states and 29030 transitions. Word has length 126 [2024-11-08 16:30:50,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:30:50,721 INFO L471 AbstractCegarLoop]: Abstraction has 23703 states and 29030 transitions. [2024-11-08 16:30:50,721 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 78 states have (on average 4.397435897435898) internal successors, (343), 78 states have internal predecessors, (343), 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) [2024-11-08 16:30:50,721 INFO L276 IsEmpty]: Start isEmpty. Operand 23703 states and 29030 transitions. [2024-11-08 16:30:50,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-08 16:30:50,723 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:30:50,723 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:30:50,740 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ec5c757-8749-48f0-9ce7-3544b5f8247f/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-08 16:30:50,923 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ec5c757-8749-48f0-9ce7-3544b5f8247f/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:30:50,924 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:30:50,924 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:30:50,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1569882428, now seen corresponding path program 1 times [2024-11-08 16:30:50,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:30:50,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643369395] [2024-11-08 16:30:50,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:30:50,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:30:50,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:30:52,368 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 16 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:30:52,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:30:52,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643369395] [2024-11-08 16:30:52,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643369395] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:30:52,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [773534698] [2024-11-08 16:30:52,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:30:52,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:30:52,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ec5c757-8749-48f0-9ce7-3544b5f8247f/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:30:52,372 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ec5c757-8749-48f0-9ce7-3544b5f8247f/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:30:52,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ec5c757-8749-48f0-9ce7-3544b5f8247f/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-08 16:30:52,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:30:52,631 INFO L255 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-08 16:30:52,634 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:30:55,441 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 16 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:30:55,442 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:31:00,487 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 16 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:31:00,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [773534698] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:31:00,487 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:31:00,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18, 18] total 52 [2024-11-08 16:31:00,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366390138] [2024-11-08 16:31:00,488 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:31:00,488 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-11-08 16:31:00,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:31:00,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-11-08 16:31:00,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=279, Invalid=2373, Unknown=0, NotChecked=0, Total=2652 [2024-11-08 16:31:00,490 INFO L87 Difference]: Start difference. First operand 23703 states and 29030 transitions. Second operand has 52 states, 52 states have (on average 6.9423076923076925) internal successors, (361), 52 states have internal predecessors, (361), 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) [2024-11-08 16:31:19,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:31:19,416 INFO L93 Difference]: Finished difference Result 65057 states and 77893 transitions. [2024-11-08 16:31:19,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2024-11-08 16:31:19,417 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 6.9423076923076925) internal successors, (361), 52 states have internal predecessors, (361), 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 126 [2024-11-08 16:31:19,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:31:19,474 INFO L225 Difference]: With dead ends: 65057 [2024-11-08 16:31:19,474 INFO L226 Difference]: Without dead ends: 48561 [2024-11-08 16:31:19,486 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 220 SyntacticMatches, 1 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3882 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=2540, Invalid=11032, Unknown=0, NotChecked=0, Total=13572 [2024-11-08 16:31:19,487 INFO L432 NwaCegarLoop]: 1613 mSDtfsCounter, 18117 mSDsluCounter, 28901 mSDsCounter, 0 mSdLazyCounter, 2852 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18117 SdHoareTripleChecker+Valid, 30514 SdHoareTripleChecker+Invalid, 2961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 2852 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-08 16:31:19,487 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18117 Valid, 30514 Invalid, 2961 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [109 Valid, 2852 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-08 16:31:19,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48561 states. [2024-11-08 16:31:24,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48561 to 30025. [2024-11-08 16:31:24,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30025 states, 30023 states have (on average 1.2116377443959632) internal successors, (36377), 30024 states have internal predecessors, (36377), 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) [2024-11-08 16:31:24,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30025 states to 30025 states and 36377 transitions. [2024-11-08 16:31:24,478 INFO L78 Accepts]: Start accepts. Automaton has 30025 states and 36377 transitions. Word has length 126 [2024-11-08 16:31:24,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:31:24,479 INFO L471 AbstractCegarLoop]: Abstraction has 30025 states and 36377 transitions. [2024-11-08 16:31:24,479 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 6.9423076923076925) internal successors, (361), 52 states have internal predecessors, (361), 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) [2024-11-08 16:31:24,479 INFO L276 IsEmpty]: Start isEmpty. Operand 30025 states and 36377 transitions. [2024-11-08 16:31:24,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-11-08 16:31:24,482 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:31:24,482 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:31:24,500 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ec5c757-8749-48f0-9ce7-3544b5f8247f/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-08 16:31:24,682 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ec5c757-8749-48f0-9ce7-3544b5f8247f/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:31:24,683 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:31:24,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:31:24,683 INFO L85 PathProgramCache]: Analyzing trace with hash -165254366, now seen corresponding path program 1 times [2024-11-08 16:31:24,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:31:24,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680694494] [2024-11-08 16:31:24,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:31:24,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:31:24,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:31:28,077 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 22 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:31:28,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:31:28,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680694494] [2024-11-08 16:31:28,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680694494] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:31:28,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1911527301] [2024-11-08 16:31:28,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:31:28,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:31:28,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ec5c757-8749-48f0-9ce7-3544b5f8247f/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:31:28,079 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ec5c757-8749-48f0-9ce7-3544b5f8247f/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:31:28,081 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ec5c757-8749-48f0-9ce7-3544b5f8247f/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-08 16:31:28,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:31:28,303 INFO L255 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 66 conjuncts are in the unsatisfiable core [2024-11-08 16:31:28,307 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:31:40,983 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 31 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:31:40,983 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:31:54,048 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 22 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:31:54,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1911527301] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:31:54,048 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:31:54,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 32, 31] total 91 [2024-11-08 16:31:54,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859239592] [2024-11-08 16:31:54,049 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:31:54,049 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 91 states [2024-11-08 16:31:54,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:31:54,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2024-11-08 16:31:54,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=817, Invalid=7373, Unknown=0, NotChecked=0, Total=8190 [2024-11-08 16:31:54,051 INFO L87 Difference]: Start difference. First operand 30025 states and 36377 transitions. Second operand has 91 states, 91 states have (on average 3.989010989010989) internal successors, (363), 91 states have internal predecessors, (363), 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)