./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem03_label11.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_420f583e-c8a1-4f1e-8e94-a413c317d491/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_420f583e-c8a1-4f1e-8e94-a413c317d491/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_420f583e-c8a1-4f1e-8e94-a413c317d491/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_420f583e-c8a1-4f1e-8e94-a413c317d491/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem03_label11.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_420f583e-c8a1-4f1e-8e94-a413c317d491/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_420f583e-c8a1-4f1e-8e94-a413c317d491/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 698befc2b2b3848a03ec5b9664ba6dadb47a33cbe123de396a3ce9bbb5d1873c --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 18:05:23,733 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 18:05:23,835 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_420f583e-c8a1-4f1e-8e94-a413c317d491/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 18:05:23,840 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 18:05:23,840 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 18:05:23,862 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 18:05:23,863 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 18:05:23,863 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 18:05:23,864 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 18:05:23,864 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 18:05:23,867 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 18:05:23,867 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 18:05:23,868 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 18:05:23,871 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 18:05:23,871 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 18:05:23,872 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 18:05:23,872 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 18:05:23,873 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 18:05:23,873 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 18:05:23,873 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 18:05:23,873 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 18:05:23,877 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 18:05:23,877 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 18:05:23,877 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 18:05:23,877 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 18:05:23,878 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 18:05:23,878 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 18:05:23,878 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 18:05:23,878 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 18:05:23,879 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 18:05:23,879 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 18:05:23,879 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 18:05:23,879 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 18:05:23,880 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 18:05:23,880 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 18:05:23,883 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 18:05:23,883 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 18:05:23,884 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 18:05:23,884 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 18:05:23,885 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 18:05:23,885 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 18:05:23,886 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 18:05:23,886 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_420f583e-c8a1-4f1e-8e94-a413c317d491/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_420f583e-c8a1-4f1e-8e94-a413c317d491/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 698befc2b2b3848a03ec5b9664ba6dadb47a33cbe123de396a3ce9bbb5d1873c [2024-11-08 18:05:24,229 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 18:05:24,259 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 18:05:24,262 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 18:05:24,264 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 18:05:24,264 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 18:05:24,266 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_420f583e-c8a1-4f1e-8e94-a413c317d491/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/eca-rers2012/Problem03_label11.c Unable to find full path for "g++" [2024-11-08 18:05:26,173 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 18:05:26,542 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 18:05:26,543 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_420f583e-c8a1-4f1e-8e94-a413c317d491/sv-benchmarks/c/eca-rers2012/Problem03_label11.c [2024-11-08 18:05:26,564 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_420f583e-c8a1-4f1e-8e94-a413c317d491/bin/uautomizer-verify-jihMAELWvX/data/87aeae99e/f932391c9a31456a98bd1a5d4bb08894/FLAG7dabaac55 [2024-11-08 18:05:26,583 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_420f583e-c8a1-4f1e-8e94-a413c317d491/bin/uautomizer-verify-jihMAELWvX/data/87aeae99e/f932391c9a31456a98bd1a5d4bb08894 [2024-11-08 18:05:26,586 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 18:05:26,588 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 18:05:26,592 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 18:05:26,592 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 18:05:26,601 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 18:05:26,602 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 06:05:26" (1/1) ... [2024-11-08 18:05:26,603 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52418169 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:05:26, skipping insertion in model container [2024-11-08 18:05:26,605 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 06:05:26" (1/1) ... [2024-11-08 18:05:26,686 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 18:05:27,343 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_420f583e-c8a1-4f1e-8e94-a413c317d491/sv-benchmarks/c/eca-rers2012/Problem03_label11.c[60283,60296] [2024-11-08 18:05:27,374 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 18:05:27,385 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 18:05:27,768 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_420f583e-c8a1-4f1e-8e94-a413c317d491/sv-benchmarks/c/eca-rers2012/Problem03_label11.c[60283,60296] [2024-11-08 18:05:27,777 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 18:05:27,800 INFO L204 MainTranslator]: Completed translation [2024-11-08 18:05:27,801 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:05:27 WrapperNode [2024-11-08 18:05:27,801 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 18:05:27,802 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 18:05:27,802 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 18:05:27,802 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 18:05:27,810 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:05:27" (1/1) ... [2024-11-08 18:05:27,852 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:05:27" (1/1) ... [2024-11-08 18:05:27,953 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1771 [2024-11-08 18:05:27,954 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 18:05:27,955 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 18:05:27,955 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 18:05:27,955 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 18:05:27,966 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:05:27" (1/1) ... [2024-11-08 18:05:27,967 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:05:27" (1/1) ... [2024-11-08 18:05:27,976 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:05:27" (1/1) ... [2024-11-08 18:05:28,021 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 18:05:28,021 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:05:27" (1/1) ... [2024-11-08 18:05:28,022 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:05:27" (1/1) ... [2024-11-08 18:05:28,076 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:05:27" (1/1) ... [2024-11-08 18:05:28,090 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:05:27" (1/1) ... [2024-11-08 18:05:28,103 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:05:27" (1/1) ... [2024-11-08 18:05:28,113 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:05:27" (1/1) ... [2024-11-08 18:05:28,126 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 18:05:28,127 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 18:05:28,127 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 18:05:28,128 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 18:05:28,128 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:05:27" (1/1) ... [2024-11-08 18:05:28,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 18:05:28,147 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_420f583e-c8a1-4f1e-8e94-a413c317d491/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:05:28,166 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_420f583e-c8a1-4f1e-8e94-a413c317d491/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 18:05:28,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_420f583e-c8a1-4f1e-8e94-a413c317d491/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 18:05:28,203 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 18:05:28,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 18:05:28,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 18:05:28,204 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 18:05:28,303 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 18:05:28,305 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 18:05:30,416 INFO L? ?]: Removed 147 outVars from TransFormulas that were not future-live. [2024-11-08 18:05:30,418 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 18:05:30,450 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 18:05:30,453 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-08 18:05:30,454 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 06:05:30 BoogieIcfgContainer [2024-11-08 18:05:30,454 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 18:05:30,456 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 18:05:30,459 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 18:05:30,462 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 18:05:30,462 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 06:05:26" (1/3) ... [2024-11-08 18:05:30,463 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9c70fa6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 06:05:30, skipping insertion in model container [2024-11-08 18:05:30,463 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:05:27" (2/3) ... [2024-11-08 18:05:30,464 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9c70fa6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 06:05:30, skipping insertion in model container [2024-11-08 18:05:30,464 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 06:05:30" (3/3) ... [2024-11-08 18:05:30,465 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label11.c [2024-11-08 18:05:30,486 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 18:05:30,486 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 18:05:30,582 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 18:05:30,590 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;@49c849db, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 18:05:30,591 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-08 18:05:30,599 INFO L276 IsEmpty]: Start isEmpty. Operand has 302 states, 300 states have (on average 1.73) internal successors, (519), 301 states have internal predecessors, (519), 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 18:05:30,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2024-11-08 18:05:30,623 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:05:30,623 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:05:30,624 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:05:30,631 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:05:30,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1261247706, now seen corresponding path program 1 times [2024-11-08 18:05:30,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:05:30,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420740334] [2024-11-08 18:05:30,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:05:30,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:05:31,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:05:31,915 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 18:05:31,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:05:31,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420740334] [2024-11-08 18:05:31,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420740334] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:05:31,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:05:31,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 18:05:31,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901018508] [2024-11-08 18:05:31,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:05:31,927 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:05:31,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:05:31,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:05:31,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:05:31,964 INFO L87 Difference]: Start difference. First operand has 302 states, 300 states have (on average 1.73) internal successors, (519), 301 states have internal predecessors, (519), 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 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 2 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 18:05:33,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:05:33,488 INFO L93 Difference]: Finished difference Result 810 states and 1445 transitions. [2024-11-08 18:05:33,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:05:33,491 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 2 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 193 [2024-11-08 18:05:33,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:05:33,506 INFO L225 Difference]: With dead ends: 810 [2024-11-08 18:05:33,506 INFO L226 Difference]: Without dead ends: 444 [2024-11-08 18:05:33,510 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 18:05:33,514 INFO L432 NwaCegarLoop]: 194 mSDtfsCounter, 61 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 628 mSolverCounterSat, 186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-08 18:05:33,515 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 231 Invalid, 814 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [186 Valid, 628 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-08 18:05:33,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2024-11-08 18:05:33,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 444. [2024-11-08 18:05:33,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 443 states have (on average 1.4288939051918736) internal successors, (633), 443 states have internal predecessors, (633), 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 18:05:33,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 633 transitions. [2024-11-08 18:05:33,581 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 633 transitions. Word has length 193 [2024-11-08 18:05:33,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:05:33,582 INFO L471 AbstractCegarLoop]: Abstraction has 444 states and 633 transitions. [2024-11-08 18:05:33,583 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 2 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 18:05:33,583 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 633 transitions. [2024-11-08 18:05:33,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2024-11-08 18:05:33,587 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:05:33,587 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:05:33,588 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 18:05:33,588 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:05:33,588 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:05:33,589 INFO L85 PathProgramCache]: Analyzing trace with hash -511356005, now seen corresponding path program 1 times [2024-11-08 18:05:33,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:05:33,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638486884] [2024-11-08 18:05:33,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:05:33,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:05:33,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:05:33,907 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:05:33,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:05:33,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638486884] [2024-11-08 18:05:33,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638486884] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:05:33,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:05:33,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 18:05:33,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845310161] [2024-11-08 18:05:33,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:05:33,912 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:05:33,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:05:33,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:05:33,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:05:33,913 INFO L87 Difference]: Start difference. First operand 444 states and 633 transitions. Second operand has 3 states, 3 states have (on average 67.0) internal successors, (201), 2 states have internal predecessors, (201), 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 18:05:34,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:05:34,915 INFO L93 Difference]: Finished difference Result 1312 states and 1878 transitions. [2024-11-08 18:05:34,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:05:34,916 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 67.0) internal successors, (201), 2 states have internal predecessors, (201), 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 201 [2024-11-08 18:05:34,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:05:34,920 INFO L225 Difference]: With dead ends: 1312 [2024-11-08 18:05:34,920 INFO L226 Difference]: Without dead ends: 870 [2024-11-08 18:05:34,922 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 18:05:34,923 INFO L432 NwaCegarLoop]: 76 mSDtfsCounter, 249 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-08 18:05:34,923 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 90 Invalid, 779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-08 18:05:34,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 870 states. [2024-11-08 18:05:34,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 870 to 856. [2024-11-08 18:05:34,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 856 states, 855 states have (on average 1.3953216374269006) internal successors, (1193), 855 states have internal predecessors, (1193), 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 18:05:34,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 856 states to 856 states and 1193 transitions. [2024-11-08 18:05:34,964 INFO L78 Accepts]: Start accepts. Automaton has 856 states and 1193 transitions. Word has length 201 [2024-11-08 18:05:34,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:05:34,964 INFO L471 AbstractCegarLoop]: Abstraction has 856 states and 1193 transitions. [2024-11-08 18:05:34,965 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.0) internal successors, (201), 2 states have internal predecessors, (201), 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 18:05:34,965 INFO L276 IsEmpty]: Start isEmpty. Operand 856 states and 1193 transitions. [2024-11-08 18:05:34,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2024-11-08 18:05:34,970 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:05:34,970 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:05:34,970 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 18:05:34,971 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:05:34,971 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:05:34,971 INFO L85 PathProgramCache]: Analyzing trace with hash -912697327, now seen corresponding path program 1 times [2024-11-08 18:05:34,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:05:34,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415172985] [2024-11-08 18:05:34,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:05:34,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:05:35,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:05:35,996 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 18:05:35,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:05:35,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415172985] [2024-11-08 18:05:35,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415172985] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:05:35,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:05:35,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:05:36,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817357421] [2024-11-08 18:05:36,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:05:36,001 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 18:05:36,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:05:36,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 18:05:36,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 18:05:36,002 INFO L87 Difference]: Start difference. First operand 856 states and 1193 transitions. Second operand has 4 states, 4 states have (on average 50.75) internal successors, (203), 3 states have internal predecessors, (203), 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 18:05:37,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:05:37,240 INFO L93 Difference]: Finished difference Result 1864 states and 2652 transitions. [2024-11-08 18:05:37,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 18:05:37,241 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 50.75) internal successors, (203), 3 states have internal predecessors, (203), 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 208 [2024-11-08 18:05:37,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:05:37,244 INFO L225 Difference]: With dead ends: 1864 [2024-11-08 18:05:37,244 INFO L226 Difference]: Without dead ends: 836 [2024-11-08 18:05:37,246 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 18:05:37,247 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 330 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 802 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 802 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-08 18:05:37,248 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [330 Valid, 47 Invalid, 980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 802 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-08 18:05:37,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 836 states. [2024-11-08 18:05:37,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 836 to 836. [2024-11-08 18:05:37,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 836 states, 835 states have (on average 1.2658682634730538) internal successors, (1057), 835 states have internal predecessors, (1057), 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 18:05:37,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 836 states to 836 states and 1057 transitions. [2024-11-08 18:05:37,274 INFO L78 Accepts]: Start accepts. Automaton has 836 states and 1057 transitions. Word has length 208 [2024-11-08 18:05:37,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:05:37,275 INFO L471 AbstractCegarLoop]: Abstraction has 836 states and 1057 transitions. [2024-11-08 18:05:37,275 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.75) internal successors, (203), 3 states have internal predecessors, (203), 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 18:05:37,275 INFO L276 IsEmpty]: Start isEmpty. Operand 836 states and 1057 transitions. [2024-11-08 18:05:37,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2024-11-08 18:05:37,279 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:05:37,279 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:05:37,280 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 18:05:37,280 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:05:37,280 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:05:37,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1039894516, now seen corresponding path program 1 times [2024-11-08 18:05:37,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:05:37,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634300390] [2024-11-08 18:05:37,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:05:37,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:05:37,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:05:37,759 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:05:37,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:05:37,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634300390] [2024-11-08 18:05:37,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634300390] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:05:37,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:05:37,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 18:05:37,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927331947] [2024-11-08 18:05:37,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:05:37,761 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:05:37,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:05:37,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:05:37,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:05:37,765 INFO L87 Difference]: Start difference. First operand 836 states and 1057 transitions. Second operand has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 2 states have internal predecessors, (221), 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 18:05:38,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:05:38,658 INFO L93 Difference]: Finished difference Result 2089 states and 2637 transitions. [2024-11-08 18:05:38,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:05:38,659 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 2 states have internal predecessors, (221), 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 221 [2024-11-08 18:05:38,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:05:38,664 INFO L225 Difference]: With dead ends: 2089 [2024-11-08 18:05:38,664 INFO L226 Difference]: Without dead ends: 1255 [2024-11-08 18:05:38,666 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 18:05:38,667 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 203 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 565 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 565 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-08 18:05:38,670 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 57 Invalid, 630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 565 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-08 18:05:38,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1255 states. [2024-11-08 18:05:38,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1255 to 1252. [2024-11-08 18:05:38,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1252 states, 1251 states have (on average 1.258193445243805) internal successors, (1574), 1251 states have internal predecessors, (1574), 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 18:05:38,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1252 states to 1252 states and 1574 transitions. [2024-11-08 18:05:38,705 INFO L78 Accepts]: Start accepts. Automaton has 1252 states and 1574 transitions. Word has length 221 [2024-11-08 18:05:38,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:05:38,705 INFO L471 AbstractCegarLoop]: Abstraction has 1252 states and 1574 transitions. [2024-11-08 18:05:38,706 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 2 states have internal predecessors, (221), 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 18:05:38,706 INFO L276 IsEmpty]: Start isEmpty. Operand 1252 states and 1574 transitions. [2024-11-08 18:05:38,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2024-11-08 18:05:38,711 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:05:38,711 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:05:38,711 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 18:05:38,712 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:05:38,712 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:05:38,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1677209132, now seen corresponding path program 1 times [2024-11-08 18:05:38,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:05:38,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802316101] [2024-11-08 18:05:38,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:05:38,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:05:38,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:05:39,541 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:05:39,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:05:39,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802316101] [2024-11-08 18:05:39,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802316101] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:05:39,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:05:39,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:05:39,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685080800] [2024-11-08 18:05:39,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:05:39,545 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 18:05:39,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:05:39,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 18:05:39,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 18:05:39,547 INFO L87 Difference]: Start difference. First operand 1252 states and 1574 transitions. Second operand has 4 states, 4 states have (on average 56.0) internal successors, (224), 3 states have internal predecessors, (224), 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 18:05:41,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:05:41,117 INFO L93 Difference]: Finished difference Result 3675 states and 4685 transitions. [2024-11-08 18:05:41,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 18:05:41,117 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 56.0) internal successors, (224), 3 states have internal predecessors, (224), 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 224 [2024-11-08 18:05:41,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:05:41,125 INFO L225 Difference]: With dead ends: 3675 [2024-11-08 18:05:41,125 INFO L226 Difference]: Without dead ends: 2077 [2024-11-08 18:05:41,127 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 18:05:41,128 INFO L432 NwaCegarLoop]: 118 mSDtfsCounter, 193 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 1116 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 1260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 1116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-08 18:05:41,129 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 149 Invalid, 1260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 1116 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-08 18:05:41,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2077 states. [2024-11-08 18:05:41,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2077 to 2076. [2024-11-08 18:05:41,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2076 states, 2075 states have (on average 1.2448192771084337) internal successors, (2583), 2075 states have internal predecessors, (2583), 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 18:05:41,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2076 states to 2076 states and 2583 transitions. [2024-11-08 18:05:41,186 INFO L78 Accepts]: Start accepts. Automaton has 2076 states and 2583 transitions. Word has length 224 [2024-11-08 18:05:41,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:05:41,187 INFO L471 AbstractCegarLoop]: Abstraction has 2076 states and 2583 transitions. [2024-11-08 18:05:41,187 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.0) internal successors, (224), 3 states have internal predecessors, (224), 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 18:05:41,188 INFO L276 IsEmpty]: Start isEmpty. Operand 2076 states and 2583 transitions. [2024-11-08 18:05:41,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2024-11-08 18:05:41,195 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:05:41,195 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:05:41,196 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 18:05:41,196 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:05:41,196 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:05:41,197 INFO L85 PathProgramCache]: Analyzing trace with hash -2040089238, now seen corresponding path program 1 times [2024-11-08 18:05:41,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:05:41,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213606952] [2024-11-08 18:05:41,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:05:41,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:05:41,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:05:41,673 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 34 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:05:41,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:05:41,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213606952] [2024-11-08 18:05:41,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213606952] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:05:41,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [975570182] [2024-11-08 18:05:41,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:05:41,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:05:41,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_420f583e-c8a1-4f1e-8e94-a413c317d491/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:05:41,678 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_420f583e-c8a1-4f1e-8e94-a413c317d491/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:05:41,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_420f583e-c8a1-4f1e-8e94-a413c317d491/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 18:05:41,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:05:41,901 INFO L255 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-08 18:05:41,915 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:05:42,326 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-08 18:05:42,326 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 18:05:42,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [975570182] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:05:42,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 18:05:42,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2024-11-08 18:05:42,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165813179] [2024-11-08 18:05:42,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:05:42,330 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:05:42,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:05:42,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:05:42,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 18:05:42,331 INFO L87 Difference]: Start difference. First operand 2076 states and 2583 transitions. Second operand has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 2 states have internal predecessors, (196), 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 18:05:43,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:05:43,250 INFO L93 Difference]: Finished difference Result 6203 states and 7723 transitions. [2024-11-08 18:05:43,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:05:43,254 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 2 states have internal predecessors, (196), 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 228 [2024-11-08 18:05:43,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:05:43,268 INFO L225 Difference]: With dead ends: 6203 [2024-11-08 18:05:43,268 INFO L226 Difference]: Without dead ends: 4129 [2024-11-08 18:05:43,271 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 227 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 18:05:43,272 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 56 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 563 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 563 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-08 18:05:43,274 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 72 Invalid, 603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 563 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-08 18:05:43,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4129 states. [2024-11-08 18:05:43,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4129 to 4127. [2024-11-08 18:05:43,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4127 states, 4126 states have (on average 1.2186136694134755) internal successors, (5028), 4126 states have internal predecessors, (5028), 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 18:05:43,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4127 states to 4127 states and 5028 transitions. [2024-11-08 18:05:43,366 INFO L78 Accepts]: Start accepts. Automaton has 4127 states and 5028 transitions. Word has length 228 [2024-11-08 18:05:43,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:05:43,367 INFO L471 AbstractCegarLoop]: Abstraction has 4127 states and 5028 transitions. [2024-11-08 18:05:43,367 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 2 states have internal predecessors, (196), 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 18:05:43,367 INFO L276 IsEmpty]: Start isEmpty. Operand 4127 states and 5028 transitions. [2024-11-08 18:05:43,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2024-11-08 18:05:43,375 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:05:43,375 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:05:43,396 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_420f583e-c8a1-4f1e-8e94-a413c317d491/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-08 18:05:43,575 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_420f583e-c8a1-4f1e-8e94-a413c317d491/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:05:43,576 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:05:43,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:05:43,578 INFO L85 PathProgramCache]: Analyzing trace with hash -732461834, now seen corresponding path program 1 times [2024-11-08 18:05:43,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:05:43,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871653203] [2024-11-08 18:05:43,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:05:43,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:05:43,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:05:44,095 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 37 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:05:44,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:05:44,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871653203] [2024-11-08 18:05:44,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871653203] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:05:44,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1727061538] [2024-11-08 18:05:44,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:05:44,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:05:44,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_420f583e-c8a1-4f1e-8e94-a413c317d491/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:05:44,101 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_420f583e-c8a1-4f1e-8e94-a413c317d491/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:05:44,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_420f583e-c8a1-4f1e-8e94-a413c317d491/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 18:05:44,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:05:44,346 INFO L255 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-08 18:05:44,351 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:05:44,685 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-08 18:05:44,685 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 18:05:44,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1727061538] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:05:44,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 18:05:44,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-08 18:05:44,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095510032] [2024-11-08 18:05:44,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:05:44,687 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:05:44,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:05:44,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:05:44,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 18:05:44,689 INFO L87 Difference]: Start difference. First operand 4127 states and 5028 transitions. Second operand has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 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 18:05:45,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:05:45,621 INFO L93 Difference]: Finished difference Result 8261 states and 10070 transitions. [2024-11-08 18:05:45,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:05:45,622 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 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 231 [2024-11-08 18:05:45,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:05:45,635 INFO L225 Difference]: With dead ends: 8261 [2024-11-08 18:05:45,635 INFO L226 Difference]: Without dead ends: 4136 [2024-11-08 18:05:45,639 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 230 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 18:05:45,640 INFO L432 NwaCegarLoop]: 314 mSDtfsCounter, 31 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 581 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-08 18:05:45,641 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 329 Invalid, 631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 581 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-08 18:05:45,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4136 states. [2024-11-08 18:05:45,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4136 to 4127. [2024-11-08 18:05:45,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4127 states, 4126 states have (on average 1.2108579738245273) internal successors, (4996), 4126 states have internal predecessors, (4996), 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 18:05:45,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4127 states to 4127 states and 4996 transitions. [2024-11-08 18:05:45,721 INFO L78 Accepts]: Start accepts. Automaton has 4127 states and 4996 transitions. Word has length 231 [2024-11-08 18:05:45,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:05:45,722 INFO L471 AbstractCegarLoop]: Abstraction has 4127 states and 4996 transitions. [2024-11-08 18:05:45,722 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 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 18:05:45,723 INFO L276 IsEmpty]: Start isEmpty. Operand 4127 states and 4996 transitions. [2024-11-08 18:05:45,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2024-11-08 18:05:45,730 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:05:45,730 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:05:45,749 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_420f583e-c8a1-4f1e-8e94-a413c317d491/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-08 18:05:45,930 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_420f583e-c8a1-4f1e-8e94-a413c317d491/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:05:45,931 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:05:45,932 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:05:45,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1710673778, now seen corresponding path program 1 times [2024-11-08 18:05:45,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:05:45,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485211894] [2024-11-08 18:05:45,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:05:45,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:05:46,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:05:46,634 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 48 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 18:05:46,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:05:46,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485211894] [2024-11-08 18:05:46,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485211894] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:05:46,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [114386460] [2024-11-08 18:05:46,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:05:46,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:05:46,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_420f583e-c8a1-4f1e-8e94-a413c317d491/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:05:46,637 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_420f583e-c8a1-4f1e-8e94-a413c317d491/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:05:46,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_420f583e-c8a1-4f1e-8e94-a413c317d491/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 18:05:46,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:05:46,845 INFO L255 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-08 18:05:46,853 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:05:46,877 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 18:05:46,878 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 18:05:46,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [114386460] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:05:46,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 18:05:46,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-08 18:05:46,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131677834] [2024-11-08 18:05:46,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:05:46,880 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:05:46,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:05:46,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:05:46,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 18:05:46,882 INFO L87 Difference]: Start difference. First operand 4127 states and 4996 transitions. Second operand has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 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 18:05:47,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:05:47,766 INFO L93 Difference]: Finished difference Result 10288 states and 12718 transitions. [2024-11-08 18:05:47,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:05:47,767 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 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 237 [2024-11-08 18:05:47,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:05:47,786 INFO L225 Difference]: With dead ends: 10288 [2024-11-08 18:05:47,786 INFO L226 Difference]: Without dead ends: 6163 [2024-11-08 18:05:47,790 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 236 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 18:05:47,791 INFO L432 NwaCegarLoop]: 315 mSDtfsCounter, 213 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-08 18:05:47,792 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 335 Invalid, 594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 491 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-08 18:05:47,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6163 states. [2024-11-08 18:05:47,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6163 to 6157. [2024-11-08 18:05:47,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6157 states, 6156 states have (on average 1.166341780376868) internal successors, (7180), 6156 states have internal predecessors, (7180), 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 18:05:47,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6157 states to 6157 states and 7180 transitions. [2024-11-08 18:05:47,917 INFO L78 Accepts]: Start accepts. Automaton has 6157 states and 7180 transitions. Word has length 237 [2024-11-08 18:05:47,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:05:47,918 INFO L471 AbstractCegarLoop]: Abstraction has 6157 states and 7180 transitions. [2024-11-08 18:05:47,918 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 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 18:05:47,918 INFO L276 IsEmpty]: Start isEmpty. Operand 6157 states and 7180 transitions. [2024-11-08 18:05:47,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2024-11-08 18:05:47,928 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:05:47,928 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:05:47,950 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_420f583e-c8a1-4f1e-8e94-a413c317d491/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-08 18:05:48,128 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_420f583e-c8a1-4f1e-8e94-a413c317d491/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:05:48,129 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:05:48,130 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:05:48,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1112084976, now seen corresponding path program 1 times [2024-11-08 18:05:48,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:05:48,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283155786] [2024-11-08 18:05:48,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:05:48,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:05:48,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:05:48,726 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 71 proven. 6 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-08 18:05:48,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:05:48,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283155786] [2024-11-08 18:05:48,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283155786] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:05:48,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2081338868] [2024-11-08 18:05:48,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:05:48,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:05:48,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_420f583e-c8a1-4f1e-8e94-a413c317d491/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:05:48,729 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_420f583e-c8a1-4f1e-8e94-a413c317d491/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:05:48,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_420f583e-c8a1-4f1e-8e94-a413c317d491/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 18:05:48,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:05:48,935 INFO L255 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 18:05:48,939 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:05:48,986 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 18:05:48,986 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 18:05:48,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2081338868] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:05:48,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 18:05:48,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-08 18:05:48,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527194142] [2024-11-08 18:05:48,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:05:48,987 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:05:48,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:05:48,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:05:48,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 18:05:48,989 INFO L87 Difference]: Start difference. First operand 6157 states and 7180 transitions. Second operand has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 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 18:05:49,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:05:49,860 INFO L93 Difference]: Finished difference Result 18416 states and 21466 transitions. [2024-11-08 18:05:49,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:05:49,861 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 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 259 [2024-11-08 18:05:49,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:05:49,895 INFO L225 Difference]: With dead ends: 18416 [2024-11-08 18:05:49,895 INFO L226 Difference]: Without dead ends: 12261 [2024-11-08 18:05:49,903 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 258 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 18:05:49,904 INFO L432 NwaCegarLoop]: 282 mSDtfsCounter, 210 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 517 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-08 18:05:49,905 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 297 Invalid, 603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 517 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-08 18:05:49,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12261 states. [2024-11-08 18:05:50,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12261 to 12255. [2024-11-08 18:05:50,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12255 states, 12254 states have (on average 1.1326097600783418) internal successors, (13879), 12254 states have internal predecessors, (13879), 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 18:05:50,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12255 states to 12255 states and 13879 transitions. [2024-11-08 18:05:50,180 INFO L78 Accepts]: Start accepts. Automaton has 12255 states and 13879 transitions. Word has length 259 [2024-11-08 18:05:50,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:05:50,180 INFO L471 AbstractCegarLoop]: Abstraction has 12255 states and 13879 transitions. [2024-11-08 18:05:50,181 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 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 18:05:50,181 INFO L276 IsEmpty]: Start isEmpty. Operand 12255 states and 13879 transitions. [2024-11-08 18:05:50,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2024-11-08 18:05:50,197 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:05:50,197 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:05:50,217 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_420f583e-c8a1-4f1e-8e94-a413c317d491/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-08 18:05:50,397 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_420f583e-c8a1-4f1e-8e94-a413c317d491/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:05:50,398 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:05:50,399 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:05:50,399 INFO L85 PathProgramCache]: Analyzing trace with hash 1167454271, now seen corresponding path program 1 times [2024-11-08 18:05:50,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:05:50,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582621459] [2024-11-08 18:05:50,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:05:50,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:05:50,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:05:51,035 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 74 proven. 6 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-08 18:05:51,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:05:51,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582621459] [2024-11-08 18:05:51,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582621459] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:05:51,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372223304] [2024-11-08 18:05:51,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:05:51,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:05:51,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_420f583e-c8a1-4f1e-8e94-a413c317d491/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:05:51,038 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_420f583e-c8a1-4f1e-8e94-a413c317d491/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:05:51,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_420f583e-c8a1-4f1e-8e94-a413c317d491/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 18:05:51,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:05:51,348 INFO L255 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-08 18:05:51,352 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:05:51,604 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-11-08 18:05:51,604 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 18:05:51,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [372223304] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:05:51,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 18:05:51,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-08 18:05:51,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983737823] [2024-11-08 18:05:51,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:05:51,606 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:05:51,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:05:51,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:05:51,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 18:05:51,607 INFO L87 Difference]: Start difference. First operand 12255 states and 13879 transitions. Second operand has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 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 18:05:52,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:05:52,508 INFO L93 Difference]: Finished difference Result 35298 states and 39913 transitions. [2024-11-08 18:05:52,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:05:52,508 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 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 265 [2024-11-08 18:05:52,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:05:52,570 INFO L225 Difference]: With dead ends: 35298 [2024-11-08 18:05:52,570 INFO L226 Difference]: Without dead ends: 23045 [2024-11-08 18:05:52,583 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 264 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 18:05:52,584 INFO L432 NwaCegarLoop]: 98 mSDtfsCounter, 38 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 563 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 563 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-08 18:05:52,585 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 125 Invalid, 610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 563 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-08 18:05:52,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23045 states. [2024-11-08 18:05:52,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23045 to 17334. [2024-11-08 18:05:52,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17334 states, 17333 states have (on average 1.13904113540645) internal successors, (19743), 17333 states have internal predecessors, (19743), 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 18:05:52,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17334 states to 17334 states and 19743 transitions. [2024-11-08 18:05:52,959 INFO L78 Accepts]: Start accepts. Automaton has 17334 states and 19743 transitions. Word has length 265 [2024-11-08 18:05:52,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:05:52,960 INFO L471 AbstractCegarLoop]: Abstraction has 17334 states and 19743 transitions. [2024-11-08 18:05:52,960 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 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 18:05:52,961 INFO L276 IsEmpty]: Start isEmpty. Operand 17334 states and 19743 transitions. [2024-11-08 18:05:52,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2024-11-08 18:05:52,986 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:05:52,987 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:05:53,008 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_420f583e-c8a1-4f1e-8e94-a413c317d491/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-08 18:05:53,191 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_420f583e-c8a1-4f1e-8e94-a413c317d491/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-08 18:05:53,192 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:05:53,192 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:05:53,193 INFO L85 PathProgramCache]: Analyzing trace with hash -314144519, now seen corresponding path program 1 times [2024-11-08 18:05:53,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:05:53,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055557331] [2024-11-08 18:05:53,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:05:53,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:05:53,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:05:53,480 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:05:53,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:05:53,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055557331] [2024-11-08 18:05:53,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055557331] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:05:53,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:05:53,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:05:53,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435704682] [2024-11-08 18:05:53,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:05:53,482 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:05:53,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:05:53,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:05:53,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:05:53,483 INFO L87 Difference]: Start difference. First operand 17334 states and 19743 transitions. Second operand has 3 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 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 18:05:54,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:05:54,372 INFO L93 Difference]: Finished difference Result 33836 states and 38545 transitions. [2024-11-08 18:05:54,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:05:54,373 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 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 304 [2024-11-08 18:05:54,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:05:54,401 INFO L225 Difference]: With dead ends: 33836 [2024-11-08 18:05:54,401 INFO L226 Difference]: Without dead ends: 16504 [2024-11-08 18:05:54,411 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 18:05:54,412 INFO L432 NwaCegarLoop]: 300 mSDtfsCounter, 228 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-08 18:05:54,412 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 315 Invalid, 590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 502 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-08 18:05:54,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16504 states. [2024-11-08 18:05:54,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16504 to 15689. [2024-11-08 18:05:54,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15689 states, 15688 states have (on average 1.108299337072922) internal successors, (17387), 15688 states have internal predecessors, (17387), 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 18:05:54,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15689 states to 15689 states and 17387 transitions. [2024-11-08 18:05:54,629 INFO L78 Accepts]: Start accepts. Automaton has 15689 states and 17387 transitions. Word has length 304 [2024-11-08 18:05:54,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:05:54,629 INFO L471 AbstractCegarLoop]: Abstraction has 15689 states and 17387 transitions. [2024-11-08 18:05:54,630 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 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 18:05:54,630 INFO L276 IsEmpty]: Start isEmpty. Operand 15689 states and 17387 transitions. [2024-11-08 18:05:54,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2024-11-08 18:05:54,653 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:05:54,654 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:05:54,654 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-08 18:05:54,654 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:05:54,655 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:05:54,655 INFO L85 PathProgramCache]: Analyzing trace with hash 834618981, now seen corresponding path program 1 times [2024-11-08 18:05:54,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:05:54,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905806073] [2024-11-08 18:05:54,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:05:54,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:05:54,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:05:55,156 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 120 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-08 18:05:55,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:05:55,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905806073] [2024-11-08 18:05:55,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905806073] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:05:55,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:05:55,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:05:55,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105317759] [2024-11-08 18:05:55,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:05:55,158 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 18:05:55,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:05:55,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 18:05:55,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 18:05:55,160 INFO L87 Difference]: Start difference. First operand 15689 states and 17387 transitions. Second operand has 4 states, 4 states have (on average 74.0) internal successors, (296), 3 states have internal predecessors, (296), 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 18:05:56,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:05:56,443 INFO L93 Difference]: Finished difference Result 38094 states and 42237 transitions. [2024-11-08 18:05:56,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 18:05:56,443 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 74.0) internal successors, (296), 3 states have internal predecessors, (296), 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 310 [2024-11-08 18:05:56,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:05:56,481 INFO L225 Difference]: With dead ends: 38094 [2024-11-08 18:05:56,481 INFO L226 Difference]: Without dead ends: 22407 [2024-11-08 18:05:56,494 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 18:05:56,495 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 336 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 1084 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 1228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 1084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:05:56,495 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [336 Valid, 85 Invalid, 1228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 1084 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-08 18:05:56,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22407 states. [2024-11-08 18:05:56,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22407 to 21994. [2024-11-08 18:05:56,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21994 states, 21993 states have (on average 1.095393988996499) internal successors, (24091), 21993 states have internal predecessors, (24091), 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 18:05:56,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21994 states to 21994 states and 24091 transitions. [2024-11-08 18:05:56,922 INFO L78 Accepts]: Start accepts. Automaton has 21994 states and 24091 transitions. Word has length 310 [2024-11-08 18:05:56,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:05:56,922 INFO L471 AbstractCegarLoop]: Abstraction has 21994 states and 24091 transitions. [2024-11-08 18:05:56,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 74.0) internal successors, (296), 3 states have internal predecessors, (296), 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 18:05:56,923 INFO L276 IsEmpty]: Start isEmpty. Operand 21994 states and 24091 transitions. [2024-11-08 18:05:56,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2024-11-08 18:05:56,959 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:05:56,960 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:05:56,960 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-08 18:05:56,961 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:05:56,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:05:56,961 INFO L85 PathProgramCache]: Analyzing trace with hash -860718285, now seen corresponding path program 1 times [2024-11-08 18:05:56,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:05:56,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699170336] [2024-11-08 18:05:56,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:05:56,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:05:57,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:05:57,521 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 96 proven. 6 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2024-11-08 18:05:57,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:05:57,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699170336] [2024-11-08 18:05:57,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699170336] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:05:57,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [435476811] [2024-11-08 18:05:57,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:05:57,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:05:57,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_420f583e-c8a1-4f1e-8e94-a413c317d491/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:05:57,524 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_420f583e-c8a1-4f1e-8e94-a413c317d491/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:05:57,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_420f583e-c8a1-4f1e-8e94-a413c317d491/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 18:05:57,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:05:57,765 INFO L255 TraceCheckSpWp]: Trace formula consists of 638 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-08 18:05:57,770 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:05:58,083 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-11-08 18:05:58,083 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 18:05:58,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [435476811] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:05:58,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 18:05:58,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-08 18:05:58,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801153002] [2024-11-08 18:05:58,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:05:58,084 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:05:58,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:05:58,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:05:58,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 18:05:58,085 INFO L87 Difference]: Start difference. First operand 21994 states and 24091 transitions. Second operand has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 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 18:05:58,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:05:58,912 INFO L93 Difference]: Finished difference Result 43991 states and 48187 transitions. [2024-11-08 18:05:58,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:05:58,913 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 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 322 [2024-11-08 18:05:58,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:05:58,941 INFO L225 Difference]: With dead ends: 43991 [2024-11-08 18:05:58,941 INFO L226 Difference]: Without dead ends: 21999 [2024-11-08 18:05:58,954 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 321 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 18:05:58,955 INFO L432 NwaCegarLoop]: 268 mSDtfsCounter, 66 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 548 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-08 18:05:58,956 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 277 Invalid, 566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 548 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-08 18:05:58,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21999 states. [2024-11-08 18:05:59,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21999 to 21791. [2024-11-08 18:05:59,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21791 states, 21790 states have (on average 1.0905002294630564) internal successors, (23762), 21790 states have internal predecessors, (23762), 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 18:05:59,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21791 states to 21791 states and 23762 transitions. [2024-11-08 18:05:59,225 INFO L78 Accepts]: Start accepts. Automaton has 21791 states and 23762 transitions. Word has length 322 [2024-11-08 18:05:59,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:05:59,226 INFO L471 AbstractCegarLoop]: Abstraction has 21791 states and 23762 transitions. [2024-11-08 18:05:59,226 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 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 18:05:59,227 INFO L276 IsEmpty]: Start isEmpty. Operand 21791 states and 23762 transitions. [2024-11-08 18:05:59,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2024-11-08 18:05:59,245 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:05:59,245 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:05:59,265 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_420f583e-c8a1-4f1e-8e94-a413c317d491/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-08 18:05:59,446 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_420f583e-c8a1-4f1e-8e94-a413c317d491/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-08 18:05:59,446 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:05:59,447 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:05:59,447 INFO L85 PathProgramCache]: Analyzing trace with hash 823619263, now seen corresponding path program 1 times [2024-11-08 18:05:59,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:05:59,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115597149] [2024-11-08 18:05:59,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:05:59,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:05:59,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:06:00,070 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 74 proven. 6 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2024-11-08 18:06:00,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:06:00,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115597149] [2024-11-08 18:06:00,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115597149] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:06:00,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [333607938] [2024-11-08 18:06:00,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:06:00,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:06:00,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_420f583e-c8a1-4f1e-8e94-a413c317d491/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:06:00,074 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_420f583e-c8a1-4f1e-8e94-a413c317d491/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:06:00,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_420f583e-c8a1-4f1e-8e94-a413c317d491/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-08 18:06:00,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:06:00,304 INFO L255 TraceCheckSpWp]: Trace formula consists of 577 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 18:06:00,309 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:06:00,541 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 145 proven. 37 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 18:06:00,542 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:06:00,750 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 145 proven. 37 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 18:06:00,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [333607938] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:06:00,750 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:06:00,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2024-11-08 18:06:00,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673299732] [2024-11-08 18:06:00,751 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:06:00,752 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 18:06:00,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:06:00,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 18:06:00,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-08 18:06:00,753 INFO L87 Difference]: Start difference. First operand 21791 states and 23762 transitions. Second operand has 6 states, 6 states have (on average 62.333333333333336) internal successors, (374), 5 states have internal predecessors, (374), 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 18:06:03,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:06:03,381 INFO L93 Difference]: Finished difference Result 74135 states and 81147 transitions. [2024-11-08 18:06:03,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 18:06:03,381 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 62.333333333333336) internal successors, (374), 5 states have internal predecessors, (374), 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 339 [2024-11-08 18:06:03,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:06:03,463 INFO L225 Difference]: With dead ends: 74135 [2024-11-08 18:06:03,463 INFO L226 Difference]: Without dead ends: 52346 [2024-11-08 18:06:03,481 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 682 GetRequests, 675 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-08 18:06:03,482 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 1903 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 1970 mSolverCounterSat, 499 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1903 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 2469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 499 IncrementalHoareTripleChecker+Valid, 1970 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-08 18:06:03,482 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1903 Valid, 159 Invalid, 2469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [499 Valid, 1970 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-08 18:06:03,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52346 states. [2024-11-08 18:06:04,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52346 to 51709. [2024-11-08 18:06:04,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51709 states, 51708 states have (on average 1.0813026997756634) internal successors, (55912), 51708 states have internal predecessors, (55912), 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 18:06:04,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51709 states to 51709 states and 55912 transitions. [2024-11-08 18:06:04,341 INFO L78 Accepts]: Start accepts. Automaton has 51709 states and 55912 transitions. Word has length 339 [2024-11-08 18:06:04,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:06:04,341 INFO L471 AbstractCegarLoop]: Abstraction has 51709 states and 55912 transitions. [2024-11-08 18:06:04,342 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 62.333333333333336) internal successors, (374), 5 states have internal predecessors, (374), 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 18:06:04,342 INFO L276 IsEmpty]: Start isEmpty. Operand 51709 states and 55912 transitions. [2024-11-08 18:06:04,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2024-11-08 18:06:04,401 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:06:04,401 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:06:04,422 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_420f583e-c8a1-4f1e-8e94-a413c317d491/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-08 18:06:04,602 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_420f583e-c8a1-4f1e-8e94-a413c317d491/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:06:04,603 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:06:04,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:06:04,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1571049703, now seen corresponding path program 1 times [2024-11-08 18:06:04,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:06:04,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072822663] [2024-11-08 18:06:04,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:06:04,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:06:04,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:06:05,115 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 240 proven. 0 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2024-11-08 18:06:05,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:06:05,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072822663] [2024-11-08 18:06:05,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072822663] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:06:05,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:06:05,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 18:06:05,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636886891] [2024-11-08 18:06:05,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:06:05,120 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:06:05,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:06:05,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:06:05,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:06:05,122 INFO L87 Difference]: Start difference. First operand 51709 states and 55912 transitions. Second operand has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 2 states have internal predecessors, (320), 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 18:06:05,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:06:05,833 INFO L93 Difference]: Finished difference Result 154712 states and 167301 transitions. [2024-11-08 18:06:05,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:06:05,833 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 2 states have internal predecessors, (320), 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 424 [2024-11-08 18:06:05,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:06:05,966 INFO L225 Difference]: With dead ends: 154712 [2024-11-08 18:06:05,969 INFO L226 Difference]: Without dead ends: 103005 [2024-11-08 18:06:06,003 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 18:06:06,004 INFO L432 NwaCegarLoop]: 251 mSDtfsCounter, 185 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 18:06:06,004 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 487 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 18:06:06,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103005 states. [2024-11-08 18:06:07,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103005 to 103000. [2024-11-08 18:06:07,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103000 states, 102999 states have (on average 1.0810202040796513) internal successors, (111344), 102999 states have internal predecessors, (111344), 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 18:06:07,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103000 states to 103000 states and 111344 transitions. [2024-11-08 18:06:07,347 INFO L78 Accepts]: Start accepts. Automaton has 103000 states and 111344 transitions. Word has length 424 [2024-11-08 18:06:07,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:06:07,347 INFO L471 AbstractCegarLoop]: Abstraction has 103000 states and 111344 transitions. [2024-11-08 18:06:07,347 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 2 states have internal predecessors, (320), 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 18:06:07,348 INFO L276 IsEmpty]: Start isEmpty. Operand 103000 states and 111344 transitions. [2024-11-08 18:06:07,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 452 [2024-11-08 18:06:07,395 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:06:07,396 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:06:07,396 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-08 18:06:07,396 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:06:07,397 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:06:07,397 INFO L85 PathProgramCache]: Analyzing trace with hash 228306600, now seen corresponding path program 1 times [2024-11-08 18:06:07,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:06:07,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143310654] [2024-11-08 18:06:07,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:06:07,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:06:07,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:06:08,318 INFO L134 CoverageAnalysis]: Checked inductivity of 572 backedges. 249 proven. 0 refuted. 0 times theorem prover too weak. 323 trivial. 0 not checked. [2024-11-08 18:06:08,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:06:08,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143310654] [2024-11-08 18:06:08,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143310654] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:06:08,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:06:08,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 18:06:08,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218799515] [2024-11-08 18:06:08,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:06:08,320 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:06:08,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:06:08,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:06:08,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:06:08,322 INFO L87 Difference]: Start difference. First operand 103000 states and 111344 transitions. Second operand has 3 states, 3 states have (on average 93.0) internal successors, (279), 2 states have internal predecessors, (279), 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 18:06:09,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:06:09,717 INFO L93 Difference]: Finished difference Result 204372 states and 220880 transitions. [2024-11-08 18:06:09,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:06:09,718 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 93.0) internal successors, (279), 2 states have internal predecessors, (279), 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 451 [2024-11-08 18:06:09,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:06:09,850 INFO L225 Difference]: With dead ends: 204372 [2024-11-08 18:06:09,850 INFO L226 Difference]: Without dead ends: 101374 [2024-11-08 18:06:09,888 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 18:06:09,889 INFO L432 NwaCegarLoop]: 87 mSDtfsCounter, 164 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 521 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-08 18:06:09,892 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 103 Invalid, 579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 521 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-08 18:06:09,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101374 states. [2024-11-08 18:06:11,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101374 to 100142. [2024-11-08 18:06:11,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100142 states, 100141 states have (on average 1.0689727484247211) internal successors, (107048), 100141 states have internal predecessors, (107048), 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 18:06:11,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100142 states to 100142 states and 107048 transitions. [2024-11-08 18:06:11,346 INFO L78 Accepts]: Start accepts. Automaton has 100142 states and 107048 transitions. Word has length 451 [2024-11-08 18:06:11,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:06:11,347 INFO L471 AbstractCegarLoop]: Abstraction has 100142 states and 107048 transitions. [2024-11-08 18:06:11,347 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.0) internal successors, (279), 2 states have internal predecessors, (279), 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 18:06:11,347 INFO L276 IsEmpty]: Start isEmpty. Operand 100142 states and 107048 transitions. [2024-11-08 18:06:11,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2024-11-08 18:06:11,389 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:06:11,390 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:06:11,390 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-08 18:06:11,390 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:06:11,391 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:06:11,391 INFO L85 PathProgramCache]: Analyzing trace with hash -65250382, now seen corresponding path program 1 times [2024-11-08 18:06:11,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:06:11,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090459018] [2024-11-08 18:06:11,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:06:11,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:06:11,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:06:11,976 INFO L134 CoverageAnalysis]: Checked inductivity of 657 backedges. 203 proven. 0 refuted. 0 times theorem prover too weak. 454 trivial. 0 not checked. [2024-11-08 18:06:11,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:06:11,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090459018] [2024-11-08 18:06:11,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090459018] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:06:11,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:06:11,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:06:11,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245319860] [2024-11-08 18:06:11,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:06:11,977 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 18:06:11,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:06:11,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 18:06:11,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 18:06:11,979 INFO L87 Difference]: Start difference. First operand 100142 states and 107048 transitions. Second operand has 4 states, 4 states have (on average 59.5) internal successors, (238), 3 states have internal predecessors, (238), 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 18:06:14,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:06:14,028 INFO L93 Difference]: Finished difference Result 289302 states and 308519 transitions. [2024-11-08 18:06:14,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 18:06:14,029 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 59.5) internal successors, (238), 3 states have internal predecessors, (238), 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 460 [2024-11-08 18:06:14,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:06:14,216 INFO L225 Difference]: With dead ends: 289302 [2024-11-08 18:06:14,217 INFO L226 Difference]: Without dead ends: 189162 [2024-11-08 18:06:14,256 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 18:06:14,256 INFO L432 NwaCegarLoop]: 62 mSDtfsCounter, 488 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 660 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 488 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-08 18:06:14,257 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [488 Valid, 300 Invalid, 717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 660 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-08 18:06:14,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189162 states. [2024-11-08 18:06:16,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189162 to 187118. [2024-11-08 18:06:16,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187118 states, 187117 states have (on average 1.0648952259816051) internal successors, (199260), 187117 states have internal predecessors, (199260), 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 18:06:17,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187118 states to 187118 states and 199260 transitions. [2024-11-08 18:06:17,250 INFO L78 Accepts]: Start accepts. Automaton has 187118 states and 199260 transitions. Word has length 460 [2024-11-08 18:06:17,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:06:17,250 INFO L471 AbstractCegarLoop]: Abstraction has 187118 states and 199260 transitions. [2024-11-08 18:06:17,251 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.5) internal successors, (238), 3 states have internal predecessors, (238), 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 18:06:17,251 INFO L276 IsEmpty]: Start isEmpty. Operand 187118 states and 199260 transitions. [2024-11-08 18:06:17,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2024-11-08 18:06:17,297 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:06:17,298 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:06:17,298 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-08 18:06:17,298 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:06:17,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:06:17,298 INFO L85 PathProgramCache]: Analyzing trace with hash 1763083109, now seen corresponding path program 1 times [2024-11-08 18:06:17,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:06:17,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924442418] [2024-11-08 18:06:17,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:06:17,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:06:17,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:06:18,210 INFO L134 CoverageAnalysis]: Checked inductivity of 628 backedges. 136 proven. 6 refuted. 0 times theorem prover too weak. 486 trivial. 0 not checked. [2024-11-08 18:06:18,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:06:18,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924442418] [2024-11-08 18:06:18,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924442418] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:06:18,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [443744083] [2024-11-08 18:06:18,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:06:18,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:06:18,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_420f583e-c8a1-4f1e-8e94-a413c317d491/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:06:18,213 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_420f583e-c8a1-4f1e-8e94-a413c317d491/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:06:18,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_420f583e-c8a1-4f1e-8e94-a413c317d491/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-08 18:06:18,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:06:18,499 INFO L255 TraceCheckSpWp]: Trace formula consists of 794 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 18:06:18,505 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:06:18,605 INFO L134 CoverageAnalysis]: Checked inductivity of 628 backedges. 480 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2024-11-08 18:06:18,605 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 18:06:18,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [443744083] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:06:18,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 18:06:18,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-08 18:06:18,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728563569] [2024-11-08 18:06:18,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:06:18,607 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:06:18,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:06:18,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:06:18,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 18:06:18,607 INFO L87 Difference]: Start difference. First operand 187118 states and 199260 transitions. Second operand has 3 states, 3 states have (on average 116.33333333333333) internal successors, (349), 3 states have internal predecessors, (349), 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 18:06:20,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:06:20,259 INFO L93 Difference]: Finished difference Result 385435 states and 410714 transitions. [2024-11-08 18:06:20,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:06:20,260 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 116.33333333333333) internal successors, (349), 3 states have internal predecessors, (349), 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 488 [2024-11-08 18:06:20,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:06:20,460 INFO L225 Difference]: With dead ends: 385435 [2024-11-08 18:06:20,461 INFO L226 Difference]: Without dead ends: 198522 [2024-11-08 18:06:20,933 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 490 GetRequests, 487 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 18:06:20,934 INFO L432 NwaCegarLoop]: 285 mSDtfsCounter, 164 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 534 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-08 18:06:20,934 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 306 Invalid, 597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 534 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-08 18:06:21,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198522 states. [2024-11-08 18:06:23,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198522 to 196468. [2024-11-08 18:06:23,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196468 states, 196467 states have (on average 1.0647996864613396) internal successors, (209198), 196467 states have internal predecessors, (209198), 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 18:06:23,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196468 states to 196468 states and 209198 transitions. [2024-11-08 18:06:23,822 INFO L78 Accepts]: Start accepts. Automaton has 196468 states and 209198 transitions. Word has length 488 [2024-11-08 18:06:23,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:06:23,823 INFO L471 AbstractCegarLoop]: Abstraction has 196468 states and 209198 transitions. [2024-11-08 18:06:23,823 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 116.33333333333333) internal successors, (349), 3 states have internal predecessors, (349), 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 18:06:23,823 INFO L276 IsEmpty]: Start isEmpty. Operand 196468 states and 209198 transitions. [2024-11-08 18:06:23,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 515 [2024-11-08 18:06:23,873 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:06:23,873 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:06:23,891 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_420f583e-c8a1-4f1e-8e94-a413c317d491/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-08 18:06:24,073 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_420f583e-c8a1-4f1e-8e94-a413c317d491/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-08 18:06:24,074 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:06:24,074 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:06:24,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1557400590, now seen corresponding path program 1 times [2024-11-08 18:06:24,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:06:24,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16303275] [2024-11-08 18:06:24,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:06:24,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:06:24,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:06:25,052 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 484 proven. 0 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2024-11-08 18:06:25,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:06:25,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16303275] [2024-11-08 18:06:25,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16303275] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:06:25,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:06:25,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 18:06:25,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617166664] [2024-11-08 18:06:25,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:06:25,054 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:06:25,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:06:25,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:06:25,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:06:25,055 INFO L87 Difference]: Start difference. First operand 196468 states and 209198 transitions. Second operand has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 2 states have internal predecessors, (325), 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 18:06:27,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:06:27,233 INFO L93 Difference]: Finished difference Result 555607 states and 592180 transitions. [2024-11-08 18:06:27,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:06:27,233 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 2 states have internal predecessors, (325), 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 514 [2024-11-08 18:06:27,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:06:27,630 INFO L225 Difference]: With dead ends: 555607 [2024-11-08 18:06:27,631 INFO L226 Difference]: Without dead ends: 359344 [2024-11-08 18:06:27,733 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 18:06:27,733 INFO L432 NwaCegarLoop]: 255 mSDtfsCounter, 169 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 488 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 18:06:27,733 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 488 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 18:06:28,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359344 states. [2024-11-08 18:06:32,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359344 to 355282. [2024-11-08 18:06:32,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355282 states, 355281 states have (on average 1.0664431815942874) internal successors, (378887), 355281 states have internal predecessors, (378887), 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 18:06:34,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355282 states to 355282 states and 378887 transitions. [2024-11-08 18:06:34,028 INFO L78 Accepts]: Start accepts. Automaton has 355282 states and 378887 transitions. Word has length 514 [2024-11-08 18:06:34,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:06:34,028 INFO L471 AbstractCegarLoop]: Abstraction has 355282 states and 378887 transitions. [2024-11-08 18:06:34,028 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 2 states have internal predecessors, (325), 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 18:06:34,029 INFO L276 IsEmpty]: Start isEmpty. Operand 355282 states and 378887 transitions. [2024-11-08 18:06:34,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 526 [2024-11-08 18:06:34,100 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:06:34,100 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:06:34,100 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-08 18:06:34,101 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:06:34,101 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:06:34,101 INFO L85 PathProgramCache]: Analyzing trace with hash 532807698, now seen corresponding path program 1 times [2024-11-08 18:06:34,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:06:34,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621615356] [2024-11-08 18:06:34,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:06:34,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:06:34,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:06:34,453 INFO L134 CoverageAnalysis]: Checked inductivity of 710 backedges. 423 proven. 0 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2024-11-08 18:06:34,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:06:34,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621615356] [2024-11-08 18:06:34,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621615356] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:06:34,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:06:34,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 18:06:34,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570026575] [2024-11-08 18:06:34,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:06:34,455 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:06:34,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:06:34,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:06:34,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:06:34,456 INFO L87 Difference]: Start difference. First operand 355282 states and 378887 transitions. Second operand has 3 states, 3 states have (on average 107.33333333333333) internal successors, (322), 2 states have internal predecessors, (322), 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)