./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem17_label26.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3107843-c280-4150-bea2-643769f2d994/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3107843-c280-4150-bea2-643769f2d994/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3107843-c280-4150-bea2-643769f2d994/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3107843-c280-4150-bea2-643769f2d994/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem17_label26.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3107843-c280-4150-bea2-643769f2d994/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3107843-c280-4150-bea2-643769f2d994/bin/uautomizer-verify-LYvppIcaGC --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 d21e74f8974e22fefe5d2a2f720c109d2a535f54b9e443011df3f86444f64325 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 23:54:51,149 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 23:54:51,267 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3107843-c280-4150-bea2-643769f2d994/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-23 23:54:51,274 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 23:54:51,274 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 23:54:51,304 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 23:54:51,305 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 23:54:51,305 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 23:54:51,306 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 23:54:51,306 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 23:54:51,308 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 23:54:51,308 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 23:54:51,309 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 23:54:51,309 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 23:54:51,309 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 23:54:51,309 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 23:54:51,309 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 23:54:51,309 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 23:54:51,309 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 23:54:51,309 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 23:54:51,310 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 23:54:51,310 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 23:54:51,310 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 23:54:51,310 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 23:54:51,310 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 23:54:51,310 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 23:54:51,310 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 23:54:51,310 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 23:54:51,310 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 23:54:51,311 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:54:51,311 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:54:51,311 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:54:51,311 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:54:51,311 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 23:54:51,311 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:54:51,311 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:54:51,311 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:54:51,311 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:54:51,312 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 23:54:51,312 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 23:54:51,312 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-23 23:54:51,312 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 23:54:51,312 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 23:54:51,312 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 23:54:51,312 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 23:54:51,312 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 23:54:51,312 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 23:54:51,313 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 23:54:51,313 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_e3107843-c280-4150-bea2-643769f2d994/bin/uautomizer-verify-LYvppIcaGC 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 -> d21e74f8974e22fefe5d2a2f720c109d2a535f54b9e443011df3f86444f64325 [2024-11-23 23:54:51,815 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 23:54:51,834 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 23:54:51,837 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 23:54:51,840 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 23:54:51,840 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 23:54:51,843 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3107843-c280-4150-bea2-643769f2d994/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/eca-rers2012/Problem17_label26.c [2024-11-23 23:54:55,273 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3107843-c280-4150-bea2-643769f2d994/bin/uautomizer-verify-LYvppIcaGC/data/b1a7937fa/38e94d020e804d658f912d1a00006762/FLAGdd4041e5a [2024-11-23 23:54:56,244 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 23:54:56,245 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3107843-c280-4150-bea2-643769f2d994/sv-benchmarks/c/eca-rers2012/Problem17_label26.c [2024-11-23 23:54:56,282 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3107843-c280-4150-bea2-643769f2d994/bin/uautomizer-verify-LYvppIcaGC/data/b1a7937fa/38e94d020e804d658f912d1a00006762/FLAGdd4041e5a [2024-11-23 23:54:56,311 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3107843-c280-4150-bea2-643769f2d994/bin/uautomizer-verify-LYvppIcaGC/data/b1a7937fa/38e94d020e804d658f912d1a00006762 [2024-11-23 23:54:56,314 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 23:54:56,318 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 23:54:56,319 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 23:54:56,320 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 23:54:56,325 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 23:54:56,326 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:54:56" (1/1) ... [2024-11-23 23:54:56,329 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e1eccea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:54:56, skipping insertion in model container [2024-11-23 23:54:56,330 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:54:56" (1/1) ... [2024-11-23 23:54:56,455 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 23:54:56,748 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_e3107843-c280-4150-bea2-643769f2d994/sv-benchmarks/c/eca-rers2012/Problem17_label26.c[4393,4406] [2024-11-23 23:54:57,520 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:54:57,537 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 23:54:57,571 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_e3107843-c280-4150-bea2-643769f2d994/sv-benchmarks/c/eca-rers2012/Problem17_label26.c[4393,4406] [2024-11-23 23:54:57,986 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:54:58,015 INFO L204 MainTranslator]: Completed translation [2024-11-23 23:54:58,016 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:54:58 WrapperNode [2024-11-23 23:54:58,018 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 23:54:58,019 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 23:54:58,019 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 23:54:58,020 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 23:54:58,032 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:54:58" (1/1) ... [2024-11-23 23:54:58,102 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:54:58" (1/1) ... [2024-11-23 23:54:58,448 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2612 [2024-11-23 23:54:58,448 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 23:54:58,449 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 23:54:58,449 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 23:54:58,449 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 23:54:58,461 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:54:58" (1/1) ... [2024-11-23 23:54:58,461 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:54:58" (1/1) ... [2024-11-23 23:54:58,516 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:54:58" (1/1) ... [2024-11-23 23:54:58,766 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]. [2024-11-23 23:54:58,766 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:54:58" (1/1) ... [2024-11-23 23:54:58,767 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:54:58" (1/1) ... [2024-11-23 23:54:58,886 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:54:58" (1/1) ... [2024-11-23 23:54:58,901 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:54:58" (1/1) ... [2024-11-23 23:54:58,920 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:54:58" (1/1) ... [2024-11-23 23:54:58,956 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:54:58" (1/1) ... [2024-11-23 23:54:58,970 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:54:58" (1/1) ... [2024-11-23 23:54:59,025 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 23:54:59,029 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 23:54:59,030 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 23:54:59,030 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 23:54:59,031 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:54:58" (1/1) ... [2024-11-23 23:54:59,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:54:59,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3107843-c280-4150-bea2-643769f2d994/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:54:59,072 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3107843-c280-4150-bea2-643769f2d994/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 23:54:59,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3107843-c280-4150-bea2-643769f2d994/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 23:54:59,111 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 23:54:59,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 23:54:59,111 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 23:54:59,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 23:54:59,210 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 23:54:59,212 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 23:55:04,517 INFO L? ?]: Removed 372 outVars from TransFormulas that were not future-live. [2024-11-23 23:55:04,517 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 23:55:04,555 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 23:55:04,556 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-23 23:55:04,556 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:55:04 BoogieIcfgContainer [2024-11-23 23:55:04,556 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 23:55:04,559 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 23:55:04,559 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 23:55:04,566 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 23:55:04,566 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 11:54:56" (1/3) ... [2024-11-23 23:55:04,567 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f15710 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:55:04, skipping insertion in model container [2024-11-23 23:55:04,567 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:54:58" (2/3) ... [2024-11-23 23:55:04,567 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f15710 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:55:04, skipping insertion in model container [2024-11-23 23:55:04,567 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:55:04" (3/3) ... [2024-11-23 23:55:04,569 INFO L128 eAbstractionObserver]: Analyzing ICFG Problem17_label26.c [2024-11-23 23:55:04,588 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 23:55:04,590 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem17_label26.c that has 1 procedures, 590 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-23 23:55:04,679 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 23:55:04,694 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;@7917a49c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 23:55:04,694 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-23 23:55:04,705 INFO L276 IsEmpty]: Start isEmpty. Operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 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) [2024-11-23 23:55:04,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-23 23:55:04,714 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:55:04,715 INFO L218 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] [2024-11-23 23:55:04,716 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:55:04,722 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:55:04,723 INFO L85 PathProgramCache]: Analyzing trace with hash -716875070, now seen corresponding path program 1 times [2024-11-23 23:55:04,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:55:04,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097228435] [2024-11-23 23:55:04,733 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:55:04,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:55:04,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:55:05,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:55:05,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:55:05,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097228435] [2024-11-23 23:55:05,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097228435] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:55:05,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:55:05,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 23:55:05,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929667374] [2024-11-23 23:55:05,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:55:05,243 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:55:05,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:55:05,268 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:55:05,269 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:55:05,274 INFO L87 Difference]: Start difference. First operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 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 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 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) [2024-11-23 23:55:09,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:55:09,583 INFO L93 Difference]: Finished difference Result 1642 states and 3024 transitions. [2024-11-23 23:55:09,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:55:09,586 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 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 28 [2024-11-23 23:55:09,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:55:09,601 INFO L225 Difference]: With dead ends: 1642 [2024-11-23 23:55:09,602 INFO L226 Difference]: Without dead ends: 975 [2024-11-23 23:55:09,606 INFO L434 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 [2024-11-23 23:55:09,610 INFO L435 NwaCegarLoop]: 474 mSDtfsCounter, 462 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 1413 mSolverCounterSat, 372 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 462 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 1785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 372 IncrementalHoareTripleChecker+Valid, 1413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:55:09,610 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [462 Valid, 550 Invalid, 1785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [372 Valid, 1413 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2024-11-23 23:55:09,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2024-11-23 23:55:09,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 972. [2024-11-23 23:55:09,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 972 states, 971 states have (on average 1.5077239958805355) internal successors, (1464), 971 states have internal predecessors, (1464), 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) [2024-11-23 23:55:09,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 1464 transitions. [2024-11-23 23:55:09,703 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 1464 transitions. Word has length 28 [2024-11-23 23:55:09,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:55:09,703 INFO L471 AbstractCegarLoop]: Abstraction has 972 states and 1464 transitions. [2024-11-23 23:55:09,703 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 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) [2024-11-23 23:55:09,704 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 1464 transitions. [2024-11-23 23:55:09,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-23 23:55:09,707 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:55:09,708 INFO L218 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:55:09,710 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-23 23:55:09,711 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:55:09,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:55:09,712 INFO L85 PathProgramCache]: Analyzing trace with hash 176078254, now seen corresponding path program 1 times [2024-11-23 23:55:09,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:55:09,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240504398] [2024-11-23 23:55:09,713 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:55:09,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:55:09,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:55:10,210 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:55:10,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:55:10,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240504398] [2024-11-23 23:55:10,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240504398] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:55:10,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:55:10,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:55:10,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704944523] [2024-11-23 23:55:10,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:55:10,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:55:10,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:55:10,216 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:55:10,216 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:55:10,216 INFO L87 Difference]: Start difference. First operand 972 states and 1464 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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) [2024-11-23 23:55:13,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:55:13,858 INFO L93 Difference]: Finished difference Result 2814 states and 4242 transitions. [2024-11-23 23:55:13,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:55:13,860 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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 98 [2024-11-23 23:55:13,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:55:13,869 INFO L225 Difference]: With dead ends: 2814 [2024-11-23 23:55:13,869 INFO L226 Difference]: Without dead ends: 1844 [2024-11-23 23:55:13,871 INFO L434 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 [2024-11-23 23:55:13,873 INFO L435 NwaCegarLoop]: 853 mSDtfsCounter, 463 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 1283 mSolverCounterSat, 414 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 921 SdHoareTripleChecker+Invalid, 1697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 414 IncrementalHoareTripleChecker+Valid, 1283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-23 23:55:13,873 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [463 Valid, 921 Invalid, 1697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [414 Valid, 1283 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-11-23 23:55:13,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1844 states. [2024-11-23 23:55:13,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1844 to 1842. [2024-11-23 23:55:13,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1842 states, 1841 states have (on average 1.3601303639326452) internal successors, (2504), 1841 states have internal predecessors, (2504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:55:13,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1842 states to 1842 states and 2504 transitions. [2024-11-23 23:55:13,939 INFO L78 Accepts]: Start accepts. Automaton has 1842 states and 2504 transitions. Word has length 98 [2024-11-23 23:55:13,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:55:13,939 INFO L471 AbstractCegarLoop]: Abstraction has 1842 states and 2504 transitions. [2024-11-23 23:55:13,940 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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) [2024-11-23 23:55:13,940 INFO L276 IsEmpty]: Start isEmpty. Operand 1842 states and 2504 transitions. [2024-11-23 23:55:13,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-11-23 23:55:13,943 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:55:13,944 INFO L218 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:55:13,944 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-23 23:55:13,944 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:55:13,945 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:55:13,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1322137327, now seen corresponding path program 1 times [2024-11-23 23:55:13,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:55:13,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020043219] [2024-11-23 23:55:13,946 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:55:13,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:55:14,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:55:14,308 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:55:14,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:55:14,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020043219] [2024-11-23 23:55:14,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020043219] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:55:14,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:55:14,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 23:55:14,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528354004] [2024-11-23 23:55:14,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:55:14,309 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:55:14,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:55:14,309 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:55:14,310 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:55:14,311 INFO L87 Difference]: Start difference. First operand 1842 states and 2504 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 2 states have internal predecessors, (120), 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) [2024-11-23 23:55:17,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:55:17,653 INFO L93 Difference]: Finished difference Result 5395 states and 7326 transitions. [2024-11-23 23:55:17,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:55:17,654 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 2 states have internal predecessors, (120), 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 120 [2024-11-23 23:55:17,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:55:17,666 INFO L225 Difference]: With dead ends: 5395 [2024-11-23 23:55:17,667 INFO L226 Difference]: Without dead ends: 2701 [2024-11-23 23:55:17,670 INFO L434 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 [2024-11-23 23:55:17,671 INFO L435 NwaCegarLoop]: 516 mSDtfsCounter, 368 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 1629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 1081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-11-23 23:55:17,671 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [368 Valid, 591 Invalid, 1629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1081 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-11-23 23:55:17,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2701 states. [2024-11-23 23:55:17,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2701 to 2701. [2024-11-23 23:55:17,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2701 states, 2700 states have (on average 1.191851851851852) internal successors, (3218), 2700 states have internal predecessors, (3218), 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) [2024-11-23 23:55:17,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2701 states to 2701 states and 3218 transitions. [2024-11-23 23:55:17,747 INFO L78 Accepts]: Start accepts. Automaton has 2701 states and 3218 transitions. Word has length 120 [2024-11-23 23:55:17,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:55:17,747 INFO L471 AbstractCegarLoop]: Abstraction has 2701 states and 3218 transitions. [2024-11-23 23:55:17,748 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 2 states have internal predecessors, (120), 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) [2024-11-23 23:55:17,748 INFO L276 IsEmpty]: Start isEmpty. Operand 2701 states and 3218 transitions. [2024-11-23 23:55:17,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2024-11-23 23:55:17,751 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:55:17,752 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:55:17,752 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-23 23:55:17,752 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:55:17,753 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:55:17,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1416376421, now seen corresponding path program 1 times [2024-11-23 23:55:17,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:55:17,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389346779] [2024-11-23 23:55:17,754 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:55:17,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:55:17,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:55:18,390 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:55:18,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:55:18,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389346779] [2024-11-23 23:55:18,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389346779] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:55:18,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:55:18,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:55:18,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278700388] [2024-11-23 23:55:18,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:55:18,394 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:55:18,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:55:18,395 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:55:18,396 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:55:18,396 INFO L87 Difference]: Start difference. First operand 2701 states and 3218 transitions. Second operand has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 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) [2024-11-23 23:55:21,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:55:21,426 INFO L93 Difference]: Finished difference Result 7108 states and 8598 transitions. [2024-11-23 23:55:21,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:55:21,427 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 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 180 [2024-11-23 23:55:21,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:55:21,462 INFO L225 Difference]: With dead ends: 7108 [2024-11-23 23:55:21,466 INFO L226 Difference]: Without dead ends: 4409 [2024-11-23 23:55:21,470 INFO L434 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 [2024-11-23 23:55:21,475 INFO L435 NwaCegarLoop]: 726 mSDtfsCounter, 496 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 1136 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 784 SdHoareTripleChecker+Invalid, 1442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 1136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-23 23:55:21,475 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 784 Invalid, 1442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 1136 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-23 23:55:21,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4409 states. [2024-11-23 23:55:21,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4409 to 4409. [2024-11-23 23:55:21,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4409 states, 4408 states have (on average 1.1705989110707804) internal successors, (5160), 4408 states have internal predecessors, (5160), 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) [2024-11-23 23:55:21,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4409 states to 4409 states and 5160 transitions. [2024-11-23 23:55:21,651 INFO L78 Accepts]: Start accepts. Automaton has 4409 states and 5160 transitions. Word has length 180 [2024-11-23 23:55:21,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:55:21,653 INFO L471 AbstractCegarLoop]: Abstraction has 4409 states and 5160 transitions. [2024-11-23 23:55:21,653 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 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) [2024-11-23 23:55:21,653 INFO L276 IsEmpty]: Start isEmpty. Operand 4409 states and 5160 transitions. [2024-11-23 23:55:21,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2024-11-23 23:55:21,658 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:55:21,658 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:55:21,658 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-23 23:55:21,659 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:55:21,660 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:55:21,662 INFO L85 PathProgramCache]: Analyzing trace with hash 744727648, now seen corresponding path program 1 times [2024-11-23 23:55:21,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:55:21,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735693497] [2024-11-23 23:55:21,663 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:55:21,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:55:21,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:55:21,969 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-23 23:55:21,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:55:21,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735693497] [2024-11-23 23:55:21,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735693497] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:55:21,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:55:21,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:55:21,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904043236] [2024-11-23 23:55:21,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:55:21,973 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:55:21,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:55:21,974 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:55:21,974 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:55:21,975 INFO L87 Difference]: Start difference. First operand 4409 states and 5160 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 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) [2024-11-23 23:55:24,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:55:24,564 INFO L93 Difference]: Finished difference Result 10936 states and 12970 transitions. [2024-11-23 23:55:24,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:55:24,565 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 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 182 [2024-11-23 23:55:24,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:55:24,587 INFO L225 Difference]: With dead ends: 10936 [2024-11-23 23:55:24,588 INFO L226 Difference]: Without dead ends: 6528 [2024-11-23 23:55:24,593 INFO L434 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 [2024-11-23 23:55:24,596 INFO L435 NwaCegarLoop]: 382 mSDtfsCounter, 423 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1215 mSolverCounterSat, 274 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 423 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 1489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 274 IncrementalHoareTripleChecker+Valid, 1215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-23 23:55:24,596 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [423 Valid, 444 Invalid, 1489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [274 Valid, 1215 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-23 23:55:24,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6528 states. [2024-11-23 23:55:24,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6528 to 4382. [2024-11-23 23:55:24,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4382 states, 4381 states have (on average 1.1684546907098836) internal successors, (5119), 4381 states have internal predecessors, (5119), 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) [2024-11-23 23:55:24,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4382 states to 4382 states and 5119 transitions. [2024-11-23 23:55:24,716 INFO L78 Accepts]: Start accepts. Automaton has 4382 states and 5119 transitions. Word has length 182 [2024-11-23 23:55:24,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:55:24,717 INFO L471 AbstractCegarLoop]: Abstraction has 4382 states and 5119 transitions. [2024-11-23 23:55:24,717 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 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) [2024-11-23 23:55:24,717 INFO L276 IsEmpty]: Start isEmpty. Operand 4382 states and 5119 transitions. [2024-11-23 23:55:24,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2024-11-23 23:55:24,722 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:55:24,723 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:55:24,724 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-23 23:55:24,724 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:55:24,725 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:55:24,725 INFO L85 PathProgramCache]: Analyzing trace with hash -929604570, now seen corresponding path program 1 times [2024-11-23 23:55:24,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:55:24,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766860893] [2024-11-23 23:55:24,725 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:55:24,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:55:24,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:55:25,713 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 51 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:55:25,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:55:25,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766860893] [2024-11-23 23:55:25,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766860893] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:55:25,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1901745175] [2024-11-23 23:55:25,714 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:55:25,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:55:25,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3107843-c280-4150-bea2-643769f2d994/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:55:25,721 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3107843-c280-4150-bea2-643769f2d994/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:55:25,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3107843-c280-4150-bea2-643769f2d994/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 23:55:25,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:55:25,957 INFO L256 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-23 23:55:25,967 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:55:26,570 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 51 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:55:26,570 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:55:27,204 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 133 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:55:27,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1901745175] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-23 23:55:27,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-23 23:55:27,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 7 [2024-11-23 23:55:27,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205191746] [2024-11-23 23:55:27,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:55:27,206 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:55:27,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:55:27,207 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:55:27,207 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-23 23:55:27,208 INFO L87 Difference]: Start difference. First operand 4382 states and 5119 transitions. Second operand has 4 states, 4 states have (on average 62.0) internal successors, (248), 3 states have internal predecessors, (248), 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) [2024-11-23 23:55:32,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:55:32,340 INFO L93 Difference]: Finished difference Result 15171 states and 17882 transitions. [2024-11-23 23:55:32,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:55:32,341 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 62.0) internal successors, (248), 3 states have internal predecessors, (248), 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 248 [2024-11-23 23:55:32,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:55:32,362 INFO L225 Difference]: With dead ends: 15171 [2024-11-23 23:55:32,362 INFO L226 Difference]: Without dead ends: 10791 [2024-11-23 23:55:32,366 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 497 GetRequests, 491 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-23 23:55:32,367 INFO L435 NwaCegarLoop]: 84 mSDtfsCounter, 979 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 2171 mSolverCounterSat, 1021 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 979 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 3192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1021 IncrementalHoareTripleChecker+Valid, 2171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2024-11-23 23:55:32,368 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [979 Valid, 145 Invalid, 3192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1021 Valid, 2171 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2024-11-23 23:55:32,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10791 states. [2024-11-23 23:55:32,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10791 to 10789. [2024-11-23 23:55:32,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10789 states, 10788 states have (on average 1.1710233592880979) internal successors, (12633), 10788 states have internal predecessors, (12633), 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) [2024-11-23 23:55:32,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10789 states to 10789 states and 12633 transitions. [2024-11-23 23:55:32,612 INFO L78 Accepts]: Start accepts. Automaton has 10789 states and 12633 transitions. Word has length 248 [2024-11-23 23:55:32,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:55:32,613 INFO L471 AbstractCegarLoop]: Abstraction has 10789 states and 12633 transitions. [2024-11-23 23:55:32,613 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 62.0) internal successors, (248), 3 states have internal predecessors, (248), 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) [2024-11-23 23:55:32,614 INFO L276 IsEmpty]: Start isEmpty. Operand 10789 states and 12633 transitions. [2024-11-23 23:55:32,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2024-11-23 23:55:32,621 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:55:32,621 INFO L218 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:55:32,636 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3107843-c280-4150-bea2-643769f2d994/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-23 23:55:32,822 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3107843-c280-4150-bea2-643769f2d994/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-23 23:55:32,822 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:55:32,823 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:55:32,823 INFO L85 PathProgramCache]: Analyzing trace with hash -2024788157, now seen corresponding path program 1 times [2024-11-23 23:55:32,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:55:32,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787486886] [2024-11-23 23:55:32,824 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:55:32,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:55:32,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:55:33,263 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 184 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2024-11-23 23:55:33,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:55:33,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787486886] [2024-11-23 23:55:33,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787486886] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:55:33,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:55:33,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:55:33,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790918161] [2024-11-23 23:55:33,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:55:33,265 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:55:33,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:55:33,270 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:55:33,270 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:55:33,270 INFO L87 Difference]: Start difference. First operand 10789 states and 12633 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 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) [2024-11-23 23:55:36,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:55:36,206 INFO L93 Difference]: Finished difference Result 23703 states and 27793 transitions. [2024-11-23 23:55:36,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:55:36,207 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 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 260 [2024-11-23 23:55:36,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:55:36,236 INFO L225 Difference]: With dead ends: 23703 [2024-11-23 23:55:36,236 INFO L226 Difference]: Without dead ends: 12491 [2024-11-23 23:55:36,241 INFO L434 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 [2024-11-23 23:55:36,242 INFO L435 NwaCegarLoop]: 773 mSDtfsCounter, 383 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 1194 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 383 SdHoareTripleChecker+Valid, 842 SdHoareTripleChecker+Invalid, 1400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 1194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-23 23:55:36,242 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [383 Valid, 842 Invalid, 1400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 1194 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-23 23:55:36,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12491 states. [2024-11-23 23:55:36,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12491 to 12491. [2024-11-23 23:55:36,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12491 states, 12490 states have (on average 1.1501200960768614) internal successors, (14365), 12490 states have internal predecessors, (14365), 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) [2024-11-23 23:55:36,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12491 states to 12491 states and 14365 transitions. [2024-11-23 23:55:36,455 INFO L78 Accepts]: Start accepts. Automaton has 12491 states and 14365 transitions. Word has length 260 [2024-11-23 23:55:36,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:55:36,456 INFO L471 AbstractCegarLoop]: Abstraction has 12491 states and 14365 transitions. [2024-11-23 23:55:36,456 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 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) [2024-11-23 23:55:36,456 INFO L276 IsEmpty]: Start isEmpty. Operand 12491 states and 14365 transitions. [2024-11-23 23:55:36,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2024-11-23 23:55:36,463 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:55:36,464 INFO L218 NwaCegarLoop]: trace histogram [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, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:55:36,464 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-23 23:55:36,464 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:55:36,465 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:55:36,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1710928730, now seen corresponding path program 1 times [2024-11-23 23:55:36,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:55:36,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036469053] [2024-11-23 23:55:36,466 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:55:36,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:55:36,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:55:36,857 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2024-11-23 23:55:36,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:55:36,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036469053] [2024-11-23 23:55:36,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036469053] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:55:36,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:55:36,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:55:36,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625775775] [2024-11-23 23:55:36,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:55:36,859 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:55:36,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:55:36,860 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:55:36,860 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:55:36,860 INFO L87 Difference]: Start difference. First operand 12491 states and 14365 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 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) [2024-11-23 23:55:39,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:55:39,398 INFO L93 Difference]: Finished difference Result 27534 states and 31665 transitions. [2024-11-23 23:55:39,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:55:39,399 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 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 300 [2024-11-23 23:55:39,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:55:39,433 INFO L225 Difference]: With dead ends: 27534 [2024-11-23 23:55:39,433 INFO L226 Difference]: Without dead ends: 14611 [2024-11-23 23:55:39,444 INFO L434 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 [2024-11-23 23:55:39,445 INFO L435 NwaCegarLoop]: 304 mSDtfsCounter, 464 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 1207 mSolverCounterSat, 275 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 464 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 1482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 275 IncrementalHoareTripleChecker+Valid, 1207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-23 23:55:39,446 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [464 Valid, 354 Invalid, 1482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [275 Valid, 1207 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-23 23:55:39,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14611 states. [2024-11-23 23:55:39,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14611 to 14182. [2024-11-23 23:55:39,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14182 states, 14181 states have (on average 1.1389887878146816) internal successors, (16152), 14181 states have internal predecessors, (16152), 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) [2024-11-23 23:55:39,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14182 states to 14182 states and 16152 transitions. [2024-11-23 23:55:39,867 INFO L78 Accepts]: Start accepts. Automaton has 14182 states and 16152 transitions. Word has length 300 [2024-11-23 23:55:39,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:55:39,869 INFO L471 AbstractCegarLoop]: Abstraction has 14182 states and 16152 transitions. [2024-11-23 23:55:39,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 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) [2024-11-23 23:55:39,871 INFO L276 IsEmpty]: Start isEmpty. Operand 14182 states and 16152 transitions. [2024-11-23 23:55:39,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2024-11-23 23:55:39,880 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:55:39,881 INFO L218 NwaCegarLoop]: trace histogram [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, 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] [2024-11-23 23:55:39,881 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-23 23:55:39,881 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:55:39,885 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:55:39,886 INFO L85 PathProgramCache]: Analyzing trace with hash 335207748, now seen corresponding path program 1 times [2024-11-23 23:55:39,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:55:39,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430018285] [2024-11-23 23:55:39,886 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:55:39,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:55:40,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:55:40,595 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 233 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2024-11-23 23:55:40,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:55:40,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430018285] [2024-11-23 23:55:40,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430018285] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:55:40,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:55:40,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:55:40,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225390624] [2024-11-23 23:55:40,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:55:40,598 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:55:40,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:55:40,599 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:55:40,601 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:55:40,602 INFO L87 Difference]: Start difference. First operand 14182 states and 16152 transitions. Second operand has 3 states, 3 states have (on average 83.33333333333333) internal successors, (250), 3 states have internal predecessors, (250), 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) [2024-11-23 23:55:43,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:55:43,659 INFO L93 Difference]: Finished difference Result 37316 states and 42354 transitions. [2024-11-23 23:55:43,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:55:43,660 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 83.33333333333333) internal successors, (250), 3 states have internal predecessors, (250), 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 [2024-11-23 23:55:43,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:55:43,700 INFO L225 Difference]: With dead ends: 37316 [2024-11-23 23:55:43,701 INFO L226 Difference]: Without dead ends: 23136 [2024-11-23 23:55:43,711 INFO L434 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 [2024-11-23 23:55:43,713 INFO L435 NwaCegarLoop]: 768 mSDtfsCounter, 322 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 1351 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 825 SdHoareTripleChecker+Invalid, 1514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 1351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-23 23:55:43,714 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [322 Valid, 825 Invalid, 1514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 1351 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-23 23:55:43,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23136 states. [2024-11-23 23:55:43,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23136 to 21418. [2024-11-23 23:55:43,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21418 states, 21417 states have (on average 1.120885278050147) internal successors, (24006), 21417 states have internal predecessors, (24006), 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) [2024-11-23 23:55:44,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21418 states to 21418 states and 24006 transitions. [2024-11-23 23:55:44,028 INFO L78 Accepts]: Start accepts. Automaton has 21418 states and 24006 transitions. Word has length 322 [2024-11-23 23:55:44,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:55:44,028 INFO L471 AbstractCegarLoop]: Abstraction has 21418 states and 24006 transitions. [2024-11-23 23:55:44,029 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.33333333333333) internal successors, (250), 3 states have internal predecessors, (250), 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) [2024-11-23 23:55:44,029 INFO L276 IsEmpty]: Start isEmpty. Operand 21418 states and 24006 transitions. [2024-11-23 23:55:44,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2024-11-23 23:55:44,038 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:55:44,038 INFO L218 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:55:44,039 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-23 23:55:44,039 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:55:44,043 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:55:44,043 INFO L85 PathProgramCache]: Analyzing trace with hash 185029324, now seen corresponding path program 1 times [2024-11-23 23:55:44,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:55:44,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870898579] [2024-11-23 23:55:44,044 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:55:44,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:55:44,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:55:44,947 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 212 proven. 78 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-23 23:55:44,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:55:44,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870898579] [2024-11-23 23:55:44,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870898579] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:55:44,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1123259432] [2024-11-23 23:55:44,949 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:55:44,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:55:44,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3107843-c280-4150-bea2-643769f2d994/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:55:44,952 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3107843-c280-4150-bea2-643769f2d994/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:55:44,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3107843-c280-4150-bea2-643769f2d994/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-23 23:55:45,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:55:45,158 INFO L256 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-23 23:55:45,166 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:55:45,535 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 212 proven. 78 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-23 23:55:45,535 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:55:45,972 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 290 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-23 23:55:45,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1123259432] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-23 23:55:45,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-23 23:55:45,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2024-11-23 23:55:45,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025406180] [2024-11-23 23:55:45,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:55:45,974 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:55:45,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:55:45,974 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:55:45,975 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-23 23:55:45,975 INFO L87 Difference]: Start difference. First operand 21418 states and 24006 transitions. Second operand has 4 states, 4 states have (on average 75.5) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:55:50,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:55:50,114 INFO L93 Difference]: Finished difference Result 51365 states and 57788 transitions. [2024-11-23 23:55:50,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:55:50,115 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 75.5) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 327 [2024-11-23 23:55:50,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:55:50,169 INFO L225 Difference]: With dead ends: 51365 [2024-11-23 23:55:50,169 INFO L226 Difference]: Without dead ends: 29521 [2024-11-23 23:55:50,191 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 655 GetRequests, 651 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-23 23:55:50,192 INFO L435 NwaCegarLoop]: 80 mSDtfsCounter, 845 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 2308 mSolverCounterSat, 500 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 845 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 2808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 500 IncrementalHoareTripleChecker+Valid, 2308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2024-11-23 23:55:50,192 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [845 Valid, 190 Invalid, 2808 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [500 Valid, 2308 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2024-11-23 23:55:50,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29521 states. [2024-11-23 23:55:50,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29521 to 28244. [2024-11-23 23:55:50,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28244 states, 28243 states have (on average 1.1312537619941225) internal successors, (31950), 28243 states have internal predecessors, (31950), 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) [2024-11-23 23:55:50,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28244 states to 28244 states and 31950 transitions. [2024-11-23 23:55:50,798 INFO L78 Accepts]: Start accepts. Automaton has 28244 states and 31950 transitions. Word has length 327 [2024-11-23 23:55:50,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:55:50,799 INFO L471 AbstractCegarLoop]: Abstraction has 28244 states and 31950 transitions. [2024-11-23 23:55:50,799 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 75.5) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:55:50,799 INFO L276 IsEmpty]: Start isEmpty. Operand 28244 states and 31950 transitions. [2024-11-23 23:55:50,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2024-11-23 23:55:50,806 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:55:50,807 INFO L218 NwaCegarLoop]: trace histogram [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, 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] [2024-11-23 23:55:50,818 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3107843-c280-4150-bea2-643769f2d994/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-23 23:55:51,007 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3107843-c280-4150-bea2-643769f2d994/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:55:51,008 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:55:51,009 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:55:51,010 INFO L85 PathProgramCache]: Analyzing trace with hash 182989261, now seen corresponding path program 1 times [2024-11-23 23:55:51,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:55:51,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759199428] [2024-11-23 23:55:51,010 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:55:51,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:55:51,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:55:52,850 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 238 proven. 82 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-23 23:55:52,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:55:52,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759199428] [2024-11-23 23:55:52,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759199428] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:55:52,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [856776889] [2024-11-23 23:55:52,851 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:55:52,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:55:52,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3107843-c280-4150-bea2-643769f2d994/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:55:52,855 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3107843-c280-4150-bea2-643769f2d994/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:55:52,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3107843-c280-4150-bea2-643769f2d994/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-23 23:55:53,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:55:53,039 INFO L256 TraceCheckSpWp]: Trace formula consists of 468 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 23:55:53,044 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:55:53,688 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 238 proven. 82 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-23 23:55:53,688 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:55:55,214 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 238 proven. 82 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-23 23:55:55,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [856776889] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:55:55,214 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:55:55,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 9 [2024-11-23 23:55:55,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689296742] [2024-11-23 23:55:55,215 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:55:55,216 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-23 23:55:55,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:55:55,217 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-23 23:55:55,218 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-23 23:55:55,218 INFO L87 Difference]: Start difference. First operand 28244 states and 31950 transitions. Second operand has 10 states, 10 states have (on average 69.3) internal successors, (693), 9 states have internal predecessors, (693), 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) [2024-11-23 23:56:08,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:56:08,029 INFO L93 Difference]: Finished difference Result 84218 states and 94792 transitions. [2024-11-23 23:56:08,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-23 23:56:08,030 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 69.3) internal successors, (693), 9 states have internal predecessors, (693), 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 340 [2024-11-23 23:56:08,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:56:08,102 INFO L225 Difference]: With dead ends: 84218 [2024-11-23 23:56:08,102 INFO L226 Difference]: Without dead ends: 53851 [2024-11-23 23:56:08,121 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 691 GetRequests, 675 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2024-11-23 23:56:08,122 INFO L435 NwaCegarLoop]: 85 mSDtfsCounter, 9623 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 9079 mSolverCounterSat, 1241 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9623 SdHoareTripleChecker+Valid, 491 SdHoareTripleChecker+Invalid, 10320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1241 IncrementalHoareTripleChecker+Valid, 9079 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:56:08,122 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9623 Valid, 491 Invalid, 10320 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1241 Valid, 9079 Invalid, 0 Unknown, 0 Unchecked, 12.0s Time] [2024-11-23 23:56:08,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53851 states. [2024-11-23 23:56:08,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53851 to 51695. [2024-11-23 23:56:08,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51695 states, 51694 states have (on average 1.116686656091616) internal successors, (57726), 51694 states have internal predecessors, (57726), 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) [2024-11-23 23:56:08,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51695 states to 51695 states and 57726 transitions. [2024-11-23 23:56:08,826 INFO L78 Accepts]: Start accepts. Automaton has 51695 states and 57726 transitions. Word has length 340 [2024-11-23 23:56:08,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:56:08,827 INFO L471 AbstractCegarLoop]: Abstraction has 51695 states and 57726 transitions. [2024-11-23 23:56:08,827 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 69.3) internal successors, (693), 9 states have internal predecessors, (693), 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) [2024-11-23 23:56:08,827 INFO L276 IsEmpty]: Start isEmpty. Operand 51695 states and 57726 transitions. [2024-11-23 23:56:08,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2024-11-23 23:56:08,832 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:56:08,834 INFO L218 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:56:08,844 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3107843-c280-4150-bea2-643769f2d994/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-23 23:56:09,034 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3107843-c280-4150-bea2-643769f2d994/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:56:09,035 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:56:09,035 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:56:09,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1005236947, now seen corresponding path program 1 times [2024-11-23 23:56:09,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:56:09,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480496711] [2024-11-23 23:56:09,036 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:56:09,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:56:09,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:56:09,671 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 283 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-23 23:56:09,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:56:09,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480496711] [2024-11-23 23:56:09,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480496711] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:56:09,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:56:09,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:56:09,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119149396] [2024-11-23 23:56:09,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:56:09,673 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:56:09,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:56:09,673 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:56:09,674 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:56:09,674 INFO L87 Difference]: Start difference. First operand 51695 states and 57726 transitions. Second operand has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:56:12,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:56:12,695 INFO L93 Difference]: Finished difference Result 122596 states and 137716 transitions. [2024-11-23 23:56:12,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:56:12,695 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 383 [2024-11-23 23:56:12,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:56:12,963 INFO L225 Difference]: With dead ends: 122596 [2024-11-23 23:56:12,963 INFO L226 Difference]: Without dead ends: 70899 [2024-11-23 23:56:12,984 INFO L434 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 [2024-11-23 23:56:12,985 INFO L435 NwaCegarLoop]: 224 mSDtfsCounter, 370 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 1310 mSolverCounterSat, 216 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 370 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 1526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 216 IncrementalHoareTripleChecker+Valid, 1310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-23 23:56:12,985 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [370 Valid, 279 Invalid, 1526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [216 Valid, 1310 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-23 23:56:13,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70899 states. [2024-11-23 23:56:14,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70899 to 68732. [2024-11-23 23:56:14,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68732 states, 68731 states have (on average 1.1167158923920792) internal successors, (76753), 68731 states have internal predecessors, (76753), 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) [2024-11-23 23:56:14,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68732 states to 68732 states and 76753 transitions. [2024-11-23 23:56:14,222 INFO L78 Accepts]: Start accepts. Automaton has 68732 states and 76753 transitions. Word has length 383 [2024-11-23 23:56:14,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:56:14,223 INFO L471 AbstractCegarLoop]: Abstraction has 68732 states and 76753 transitions. [2024-11-23 23:56:14,223 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:56:14,223 INFO L276 IsEmpty]: Start isEmpty. Operand 68732 states and 76753 transitions. [2024-11-23 23:56:14,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2024-11-23 23:56:14,235 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:56:14,236 INFO L218 NwaCegarLoop]: trace histogram [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, 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, 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] [2024-11-23 23:56:14,236 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-23 23:56:14,236 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:56:14,236 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:56:14,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1024507897, now seen corresponding path program 1 times [2024-11-23 23:56:14,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:56:14,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615258588] [2024-11-23 23:56:14,237 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:56:14,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:56:14,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:56:15,007 INFO L134 CoverageAnalysis]: Checked inductivity of 610 backedges. 503 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2024-11-23 23:56:15,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:56:15,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615258588] [2024-11-23 23:56:15,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615258588] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:56:15,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:56:15,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:56:15,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471442330] [2024-11-23 23:56:15,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:56:15,009 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:56:15,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:56:15,009 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:56:15,009 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:56:15,010 INFO L87 Difference]: Start difference. First operand 68732 states and 76753 transitions. Second operand has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 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) [2024-11-23 23:56:17,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:56:17,667 INFO L93 Difference]: Finished difference Result 157468 states and 175563 transitions. [2024-11-23 23:56:17,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:56:17,668 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 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 428 [2024-11-23 23:56:17,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:56:17,763 INFO L225 Difference]: With dead ends: 157468 [2024-11-23 23:56:17,764 INFO L226 Difference]: Without dead ends: 84895 [2024-11-23 23:56:17,811 INFO L434 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 [2024-11-23 23:56:17,811 INFO L435 NwaCegarLoop]: 562 mSDtfsCounter, 449 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 1186 mSolverCounterSat, 304 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 598 SdHoareTripleChecker+Invalid, 1490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 304 IncrementalHoareTripleChecker+Valid, 1186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-23 23:56:17,812 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [449 Valid, 598 Invalid, 1490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [304 Valid, 1186 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-23 23:56:17,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84895 states. [2024-11-23 23:56:19,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84895 to 78493. [2024-11-23 23:56:19,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78493 states, 78492 states have (on average 1.1061636854711308) internal successors, (86825), 78492 states have internal predecessors, (86825), 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) [2024-11-23 23:56:19,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78493 states to 78493 states and 86825 transitions. [2024-11-23 23:56:19,299 INFO L78 Accepts]: Start accepts. Automaton has 78493 states and 86825 transitions. Word has length 428 [2024-11-23 23:56:19,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:56:19,299 INFO L471 AbstractCegarLoop]: Abstraction has 78493 states and 86825 transitions. [2024-11-23 23:56:19,300 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 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) [2024-11-23 23:56:19,300 INFO L276 IsEmpty]: Start isEmpty. Operand 78493 states and 86825 transitions. [2024-11-23 23:56:19,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 454 [2024-11-23 23:56:19,313 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:56:19,313 INFO L218 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:56:19,313 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-23 23:56:19,314 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:56:19,314 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:56:19,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1646221535, now seen corresponding path program 1 times [2024-11-23 23:56:19,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:56:19,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23850550] [2024-11-23 23:56:19,315 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:56:19,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:56:19,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:56:20,203 INFO L134 CoverageAnalysis]: Checked inductivity of 389 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-23 23:56:20,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:56:20,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23850550] [2024-11-23 23:56:20,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23850550] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:56:20,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:56:20,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:56:20,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051925196] [2024-11-23 23:56:20,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:56:20,205 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:56:20,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:56:20,206 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:56:20,206 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:56:20,206 INFO L87 Difference]: Start difference. First operand 78493 states and 86825 transitions. Second operand has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 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) [2024-11-23 23:56:23,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:56:23,173 INFO L93 Difference]: Finished difference Result 178712 states and 198049 transitions. [2024-11-23 23:56:23,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:56:23,173 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 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 453 [2024-11-23 23:56:23,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:56:23,277 INFO L225 Difference]: With dead ends: 178712 [2024-11-23 23:56:23,277 INFO L226 Difference]: Without dead ends: 100217 [2024-11-23 23:56:23,321 INFO L434 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 [2024-11-23 23:56:23,322 INFO L435 NwaCegarLoop]: 139 mSDtfsCounter, 479 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 1244 mSolverCounterSat, 260 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 479 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 1504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 260 IncrementalHoareTripleChecker+Valid, 1244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-23 23:56:23,322 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [479 Valid, 182 Invalid, 1504 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [260 Valid, 1244 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-23 23:56:23,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100217 states. [2024-11-23 23:56:24,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100217 to 98060. [2024-11-23 23:56:24,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98060 states, 98059 states have (on average 1.107945216655279) internal successors, (108644), 98059 states have internal predecessors, (108644), 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) [2024-11-23 23:56:25,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98060 states to 98060 states and 108644 transitions. [2024-11-23 23:56:25,073 INFO L78 Accepts]: Start accepts. Automaton has 98060 states and 108644 transitions. Word has length 453 [2024-11-23 23:56:25,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:56:25,074 INFO L471 AbstractCegarLoop]: Abstraction has 98060 states and 108644 transitions. [2024-11-23 23:56:25,074 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 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) [2024-11-23 23:56:25,074 INFO L276 IsEmpty]: Start isEmpty. Operand 98060 states and 108644 transitions. [2024-11-23 23:56:25,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 476 [2024-11-23 23:56:25,344 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:56:25,344 INFO L218 NwaCegarLoop]: trace histogram [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, 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, 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] [2024-11-23 23:56:25,344 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-23 23:56:25,344 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:56:25,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:56:25,345 INFO L85 PathProgramCache]: Analyzing trace with hash -992601916, now seen corresponding path program 1 times [2024-11-23 23:56:25,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:56:25,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481553990] [2024-11-23 23:56:25,345 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:56:25,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:56:25,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:56:25,899 INFO L134 CoverageAnalysis]: Checked inductivity of 640 backedges. 532 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2024-11-23 23:56:25,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:56:25,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481553990] [2024-11-23 23:56:25,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481553990] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:56:25,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:56:25,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:56:25,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573225319] [2024-11-23 23:56:25,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:56:25,901 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:56:25,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:56:25,901 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:56:25,902 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:56:25,902 INFO L87 Difference]: Start difference. First operand 98060 states and 108644 transitions. Second operand has 3 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 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) [2024-11-23 23:56:28,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:56:28,630 INFO L93 Difference]: Finished difference Result 219550 states and 242946 transitions. [2024-11-23 23:56:28,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:56:28,631 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 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 475 [2024-11-23 23:56:28,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:56:28,755 INFO L225 Difference]: With dead ends: 219550 [2024-11-23 23:56:28,755 INFO L226 Difference]: Without dead ends: 121917 [2024-11-23 23:56:28,802 INFO L434 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 [2024-11-23 23:56:28,805 INFO L435 NwaCegarLoop]: 175 mSDtfsCounter, 444 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 1206 mSolverCounterSat, 233 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 444 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 1439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 233 IncrementalHoareTripleChecker+Valid, 1206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-23 23:56:28,805 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [444 Valid, 219 Invalid, 1439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [233 Valid, 1206 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-23 23:56:28,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121917 states. [2024-11-23 23:56:30,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121917 to 116347. [2024-11-23 23:56:30,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116347 states, 116346 states have (on average 1.098825915802864) internal successors, (127844), 116346 states have internal predecessors, (127844), 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) [2024-11-23 23:56:30,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116347 states to 116347 states and 127844 transitions. [2024-11-23 23:56:30,751 INFO L78 Accepts]: Start accepts. Automaton has 116347 states and 127844 transitions. Word has length 475 [2024-11-23 23:56:30,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:56:30,752 INFO L471 AbstractCegarLoop]: Abstraction has 116347 states and 127844 transitions. [2024-11-23 23:56:30,752 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 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) [2024-11-23 23:56:30,752 INFO L276 IsEmpty]: Start isEmpty. Operand 116347 states and 127844 transitions. [2024-11-23 23:56:30,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 482 [2024-11-23 23:56:30,764 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:56:30,764 INFO L218 NwaCegarLoop]: trace histogram [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, 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, 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] [2024-11-23 23:56:30,764 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-23 23:56:30,765 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:56:30,765 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:56:30,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1734086119, now seen corresponding path program 1 times [2024-11-23 23:56:30,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:56:30,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123253750] [2024-11-23 23:56:30,766 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:56:30,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:56:30,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:56:31,596 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 392 proven. 26 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2024-11-23 23:56:31,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:56:31,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123253750] [2024-11-23 23:56:31,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123253750] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:56:31,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2132310600] [2024-11-23 23:56:31,597 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:56:31,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:56:31,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3107843-c280-4150-bea2-643769f2d994/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:56:31,599 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3107843-c280-4150-bea2-643769f2d994/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:56:31,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3107843-c280-4150-bea2-643769f2d994/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-23 23:56:31,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:56:31,920 INFO L256 TraceCheckSpWp]: Trace formula consists of 631 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-23 23:56:31,935 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:56:33,697 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 0 proven. 582 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2024-11-23 23:56:33,697 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:56:34,382 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 448 proven. 52 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2024-11-23 23:56:34,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2132310600] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:56:34,383 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:56:34,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 9 [2024-11-23 23:56:34,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822335867] [2024-11-23 23:56:34,384 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:56:34,385 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-23 23:56:34,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:56:34,387 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-23 23:56:34,387 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-23 23:56:34,387 INFO L87 Difference]: Start difference. First operand 116347 states and 127844 transitions. Second operand has 9 states, 9 states have (on average 74.22222222222223) internal successors, (668), 9 states have internal predecessors, (668), 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) [2024-11-23 23:56:46,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:56:46,484 INFO L93 Difference]: Finished difference Result 270370 states and 296394 transitions. [2024-11-23 23:56:46,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-23 23:56:46,485 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 74.22222222222223) internal successors, (668), 9 states have internal predecessors, (668), 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 481 [2024-11-23 23:56:46,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:56:46,664 INFO L225 Difference]: With dead ends: 270370 [2024-11-23 23:56:46,665 INFO L226 Difference]: Without dead ends: 152750 [2024-11-23 23:56:46,706 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 977 GetRequests, 961 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2024-11-23 23:56:46,707 INFO L435 NwaCegarLoop]: 100 mSDtfsCounter, 5740 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 9839 mSolverCounterSat, 1204 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5740 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 11043 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1204 IncrementalHoareTripleChecker+Valid, 9839 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2024-11-23 23:56:46,707 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5740 Valid, 475 Invalid, 11043 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1204 Valid, 9839 Invalid, 0 Unknown, 0 Unchecked, 10.9s Time] [2024-11-23 23:56:46,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152750 states. [2024-11-23 23:56:48,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152750 to 127391. [2024-11-23 23:56:48,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127391 states, 127390 states have (on average 1.0866002040976528) internal successors, (138422), 127390 states have internal predecessors, (138422), 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) [2024-11-23 23:56:48,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127391 states to 127391 states and 138422 transitions. [2024-11-23 23:56:48,671 INFO L78 Accepts]: Start accepts. Automaton has 127391 states and 138422 transitions. Word has length 481 [2024-11-23 23:56:48,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:56:48,672 INFO L471 AbstractCegarLoop]: Abstraction has 127391 states and 138422 transitions. [2024-11-23 23:56:48,672 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 74.22222222222223) internal successors, (668), 9 states have internal predecessors, (668), 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) [2024-11-23 23:56:48,672 INFO L276 IsEmpty]: Start isEmpty. Operand 127391 states and 138422 transitions. [2024-11-23 23:56:48,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 549 [2024-11-23 23:56:48,680 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:56:48,680 INFO L218 NwaCegarLoop]: trace histogram [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, 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, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-23 23:56:48,692 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3107843-c280-4150-bea2-643769f2d994/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-23 23:56:48,884 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3107843-c280-4150-bea2-643769f2d994/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-23 23:56:48,884 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:56:48,885 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:56:48,885 INFO L85 PathProgramCache]: Analyzing trace with hash -166651842, now seen corresponding path program 1 times [2024-11-23 23:56:48,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:56:48,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202682217] [2024-11-23 23:56:48,885 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:56:48,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:56:49,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:56:49,218 INFO L134 CoverageAnalysis]: Checked inductivity of 626 backedges. 355 proven. 0 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2024-11-23 23:56:49,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:56:49,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202682217] [2024-11-23 23:56:49,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202682217] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:56:49,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:56:49,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:56:49,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161511743] [2024-11-23 23:56:49,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:56:49,219 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:56:49,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:56:49,220 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:56:49,220 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:56:49,221 INFO L87 Difference]: Start difference. First operand 127391 states and 138422 transitions. Second operand has 3 states, 3 states have (on average 120.33333333333333) internal successors, (361), 3 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:56:52,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:56:52,560 INFO L93 Difference]: Finished difference Result 263284 states and 285853 transitions. [2024-11-23 23:56:52,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:56:52,560 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 120.33333333333333) internal successors, (361), 3 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 548 [2024-11-23 23:56:52,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:56:52,730 INFO L225 Difference]: With dead ends: 263284 [2024-11-23 23:56:52,730 INFO L226 Difference]: Without dead ends: 136317 [2024-11-23 23:56:52,795 INFO L434 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 [2024-11-23 23:56:52,795 INFO L435 NwaCegarLoop]: 624 mSDtfsCounter, 498 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 1135 mSolverCounterSat, 185 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 498 SdHoareTripleChecker+Valid, 667 SdHoareTripleChecker+Invalid, 1320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 185 IncrementalHoareTripleChecker+Valid, 1135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-23 23:56:52,795 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [498 Valid, 667 Invalid, 1320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [185 Valid, 1135 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-23 23:56:52,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136317 states. [2024-11-23 23:56:54,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136317 to 131636. [2024-11-23 23:56:54,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131636 states, 131635 states have (on average 1.0778060546207315) internal successors, (141877), 131635 states have internal predecessors, (141877), 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) [2024-11-23 23:56:55,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131636 states to 131636 states and 141877 transitions. [2024-11-23 23:56:55,063 INFO L78 Accepts]: Start accepts. Automaton has 131636 states and 141877 transitions. Word has length 548 [2024-11-23 23:56:55,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:56:55,064 INFO L471 AbstractCegarLoop]: Abstraction has 131636 states and 141877 transitions. [2024-11-23 23:56:55,064 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 120.33333333333333) internal successors, (361), 3 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:56:55,064 INFO L276 IsEmpty]: Start isEmpty. Operand 131636 states and 141877 transitions. [2024-11-23 23:56:55,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 593 [2024-11-23 23:56:55,075 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:56:55,076 INFO L218 NwaCegarLoop]: trace histogram [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, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2024-11-23 23:56:55,076 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-23 23:56:55,076 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:56:55,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:56:55,077 INFO L85 PathProgramCache]: Analyzing trace with hash 254199019, now seen corresponding path program 1 times [2024-11-23 23:56:55,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:56:55,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057153978] [2024-11-23 23:56:55,077 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:56:55,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:56:55,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:56:56,029 INFO L134 CoverageAnalysis]: Checked inductivity of 1036 backedges. 798 proven. 0 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2024-11-23 23:56:56,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:56:56,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057153978] [2024-11-23 23:56:56,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057153978] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:56:56,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:56:56,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:56:56,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250228034] [2024-11-23 23:56:56,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:56:56,031 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:56:56,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:56:56,032 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:56:56,032 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:56:56,032 INFO L87 Difference]: Start difference. First operand 131636 states and 141877 transitions. Second operand has 3 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 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) [2024-11-23 23:56:58,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:56:58,914 INFO L93 Difference]: Finished difference Result 270944 states and 291762 transitions. [2024-11-23 23:56:58,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:56:58,915 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 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 592 [2024-11-23 23:56:58,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:56:59,070 INFO L225 Difference]: With dead ends: 270944 [2024-11-23 23:56:59,070 INFO L226 Difference]: Without dead ends: 140160 [2024-11-23 23:56:59,124 INFO L434 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 [2024-11-23 23:56:59,125 INFO L435 NwaCegarLoop]: 219 mSDtfsCounter, 326 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 1155 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 326 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 1309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 1155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-23 23:56:59,125 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [326 Valid, 267 Invalid, 1309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 1155 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-23 23:56:59,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140160 states. [2024-11-23 23:57:00,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140160 to 136738. [2024-11-23 23:57:01,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136738 states, 136737 states have (on average 1.0725407168505965) internal successors, (146656), 136737 states have internal predecessors, (146656), 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) [2024-11-23 23:57:01,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136738 states to 136738 states and 146656 transitions. [2024-11-23 23:57:01,717 INFO L78 Accepts]: Start accepts. Automaton has 136738 states and 146656 transitions. Word has length 592 [2024-11-23 23:57:01,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:57:01,717 INFO L471 AbstractCegarLoop]: Abstraction has 136738 states and 146656 transitions. [2024-11-23 23:57:01,718 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 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) [2024-11-23 23:57:01,718 INFO L276 IsEmpty]: Start isEmpty. Operand 136738 states and 146656 transitions. [2024-11-23 23:57:01,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 634 [2024-11-23 23:57:01,724 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:57:01,725 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 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, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:57:01,725 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-23 23:57:01,725 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:57:01,725 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:57:01,726 INFO L85 PathProgramCache]: Analyzing trace with hash -362262242, now seen corresponding path program 1 times [2024-11-23 23:57:01,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:57:01,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297350209] [2024-11-23 23:57:01,726 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:57:01,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:57:01,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:57:02,594 INFO L134 CoverageAnalysis]: Checked inductivity of 1519 backedges. 1226 proven. 0 refuted. 0 times theorem prover too weak. 293 trivial. 0 not checked. [2024-11-23 23:57:02,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:57:02,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297350209] [2024-11-23 23:57:02,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297350209] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:57:02,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:57:02,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 23:57:02,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884511566] [2024-11-23 23:57:02,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:57:02,595 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:57:02,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:57:02,596 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:57:02,596 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:57:02,597 INFO L87 Difference]: Start difference. First operand 136738 states and 146656 transitions. Second operand has 4 states, 4 states have (on average 106.25) internal successors, (425), 4 states have internal predecessors, (425), 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) [2024-11-23 23:57:06,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:57:06,104 INFO L93 Difference]: Finished difference Result 279012 states and 299193 transitions. [2024-11-23 23:57:06,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:57:06,105 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 106.25) internal successors, (425), 4 states have internal predecessors, (425), 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 633 [2024-11-23 23:57:06,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:57:06,248 INFO L225 Difference]: With dead ends: 279012 [2024-11-23 23:57:06,248 INFO L226 Difference]: Without dead ends: 143126 [2024-11-23 23:57:06,315 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:57:06,316 INFO L435 NwaCegarLoop]: 638 mSDtfsCounter, 774 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 2094 mSolverCounterSat, 198 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 774 SdHoareTripleChecker+Valid, 736 SdHoareTripleChecker+Invalid, 2292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 198 IncrementalHoareTripleChecker+Valid, 2094 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-23 23:57:06,316 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [774 Valid, 736 Invalid, 2292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [198 Valid, 2094 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-23 23:57:06,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143126 states. [2024-11-23 23:57:08,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143126 to 140575. [2024-11-23 23:57:08,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140575 states, 140574 states have (on average 1.0715210494116978) internal successors, (150628), 140574 states have internal predecessors, (150628), 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) [2024-11-23 23:57:08,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140575 states to 140575 states and 150628 transitions. [2024-11-23 23:57:08,894 INFO L78 Accepts]: Start accepts. Automaton has 140575 states and 150628 transitions. Word has length 633 [2024-11-23 23:57:08,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:57:08,894 INFO L471 AbstractCegarLoop]: Abstraction has 140575 states and 150628 transitions. [2024-11-23 23:57:08,894 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 106.25) internal successors, (425), 4 states have internal predecessors, (425), 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) [2024-11-23 23:57:08,894 INFO L276 IsEmpty]: Start isEmpty. Operand 140575 states and 150628 transitions. [2024-11-23 23:57:08,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 696 [2024-11-23 23:57:08,904 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:57:08,905 INFO L218 NwaCegarLoop]: trace histogram [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, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-23 23:57:08,905 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-23 23:57:08,905 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:57:08,905 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:57:08,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1962600891, now seen corresponding path program 1 times [2024-11-23 23:57:08,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:57:08,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250637310] [2024-11-23 23:57:08,906 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:57:08,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:57:09,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:57:09,772 INFO L134 CoverageAnalysis]: Checked inductivity of 1099 backedges. 129 proven. 0 refuted. 0 times theorem prover too weak. 970 trivial. 0 not checked. [2024-11-23 23:57:09,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:57:09,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250637310] [2024-11-23 23:57:09,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250637310] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:57:09,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:57:09,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:57:09,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704647374] [2024-11-23 23:57:09,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:57:09,773 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:57:09,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:57:09,774 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:57:09,774 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:57:09,774 INFO L87 Difference]: Start difference. First operand 140575 states and 150628 transitions. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 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) [2024-11-23 23:57:12,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:57:12,734 INFO L93 Difference]: Finished difference Result 293958 states and 314753 transitions. [2024-11-23 23:57:12,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:57:12,735 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 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 695 [2024-11-23 23:57:12,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:57:12,877 INFO L225 Difference]: With dead ends: 293958 [2024-11-23 23:57:12,877 INFO L226 Difference]: Without dead ends: 153805 [2024-11-23 23:57:13,368 INFO L434 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 [2024-11-23 23:57:13,368 INFO L435 NwaCegarLoop]: 167 mSDtfsCounter, 483 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 1211 mSolverCounterSat, 255 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 483 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 1466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 255 IncrementalHoareTripleChecker+Valid, 1211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-23 23:57:13,369 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [483 Valid, 204 Invalid, 1466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [255 Valid, 1211 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-23 23:57:13,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153805 states.