./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem15_label59.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ae2ebd-7914-4466-9c1f-f8a32c7012b6/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ae2ebd-7914-4466-9c1f-f8a32c7012b6/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ae2ebd-7914-4466-9c1f-f8a32c7012b6/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ae2ebd-7914-4466-9c1f-f8a32c7012b6/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem15_label59.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ae2ebd-7914-4466-9c1f-f8a32c7012b6/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ae2ebd-7914-4466-9c1f-f8a32c7012b6/bin/uautomizer-verify-aQ6SnzHsRB --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 685efd9995e3559fa33c98b3c3a918c092f08496a4c3c16e54af7b7a4363265b --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 20:13:13,752 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 20:13:13,856 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ae2ebd-7914-4466-9c1f-f8a32c7012b6/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-27 20:13:13,863 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 20:13:13,864 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 20:13:13,906 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 20:13:13,907 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 20:13:13,908 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 20:13:13,908 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 20:13:13,908 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 20:13:13,909 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 20:13:13,909 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 20:13:13,910 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 20:13:13,910 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 20:13:13,911 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 20:13:13,911 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 20:13:13,911 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 20:13:13,911 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 20:13:13,912 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 20:13:13,912 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 20:13:13,912 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 20:13:13,912 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 20:13:13,912 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 20:13:13,912 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 20:13:13,912 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 20:13:13,912 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 20:13:13,912 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 20:13:13,912 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 20:13:13,913 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 20:13:13,913 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:13:13,913 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:13:13,913 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:13:13,913 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:13:13,913 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 20:13:13,913 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:13:13,913 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:13:13,913 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:13:13,913 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:13:13,914 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 20:13:13,914 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 20:13:13,914 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 20:13:13,914 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 20:13:13,914 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 20:13:13,914 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 20:13:13,914 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 20:13:13,914 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 20:13:13,914 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 20:13:13,916 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 20:13:13,916 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_51ae2ebd-7914-4466-9c1f-f8a32c7012b6/bin/uautomizer-verify-aQ6SnzHsRB 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 -> 685efd9995e3559fa33c98b3c3a918c092f08496a4c3c16e54af7b7a4363265b [2024-11-27 20:13:14,302 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 20:13:14,318 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 20:13:14,323 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 20:13:14,325 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 20:13:14,325 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 20:13:14,327 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ae2ebd-7914-4466-9c1f-f8a32c7012b6/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/eca-rers2012/Problem15_label59.c [2024-11-27 20:13:17,570 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ae2ebd-7914-4466-9c1f-f8a32c7012b6/bin/uautomizer-verify-aQ6SnzHsRB/data/0f871df78/9b8027e98b5e4f9197069427d47837d0/FLAG858f2789e [2024-11-27 20:13:18,141 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 20:13:18,142 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ae2ebd-7914-4466-9c1f-f8a32c7012b6/sv-benchmarks/c/eca-rers2012/Problem15_label59.c [2024-11-27 20:13:18,169 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ae2ebd-7914-4466-9c1f-f8a32c7012b6/bin/uautomizer-verify-aQ6SnzHsRB/data/0f871df78/9b8027e98b5e4f9197069427d47837d0/FLAG858f2789e [2024-11-27 20:13:18,194 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ae2ebd-7914-4466-9c1f-f8a32c7012b6/bin/uautomizer-verify-aQ6SnzHsRB/data/0f871df78/9b8027e98b5e4f9197069427d47837d0 [2024-11-27 20:13:18,197 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 20:13:18,198 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 20:13:18,200 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 20:13:18,200 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 20:13:18,205 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 20:13:18,206 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:13:18" (1/1) ... [2024-11-27 20:13:18,207 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63d6ba84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:13:18, skipping insertion in model container [2024-11-27 20:13:18,208 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:13:18" (1/1) ... [2024-11-27 20:13:18,283 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 20:13:18,546 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_51ae2ebd-7914-4466-9c1f-f8a32c7012b6/sv-benchmarks/c/eca-rers2012/Problem15_label59.c[6635,6648] [2024-11-27 20:13:19,058 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:13:19,070 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 20:13:19,117 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_51ae2ebd-7914-4466-9c1f-f8a32c7012b6/sv-benchmarks/c/eca-rers2012/Problem15_label59.c[6635,6648] [2024-11-27 20:13:19,431 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:13:19,452 INFO L204 MainTranslator]: Completed translation [2024-11-27 20:13:19,453 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:13:19 WrapperNode [2024-11-27 20:13:19,454 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 20:13:19,455 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 20:13:19,455 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 20:13:19,455 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 20:13:19,464 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:13:19" (1/1) ... [2024-11-27 20:13:19,517 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:13:19" (1/1) ... [2024-11-27 20:13:19,765 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1759 [2024-11-27 20:13:19,767 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 20:13:19,767 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 20:13:19,768 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 20:13:19,768 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 20:13:19,778 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:13:19" (1/1) ... [2024-11-27 20:13:19,779 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:13:19" (1/1) ... [2024-11-27 20:13:19,802 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:13:19" (1/1) ... [2024-11-27 20:13:19,982 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]. [2024-11-27 20:13:19,982 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:13:19" (1/1) ... [2024-11-27 20:13:19,982 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:13:19" (1/1) ... [2024-11-27 20:13:20,101 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:13:19" (1/1) ... [2024-11-27 20:13:20,111 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:13:19" (1/1) ... [2024-11-27 20:13:20,137 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:13:19" (1/1) ... [2024-11-27 20:13:20,162 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:13:19" (1/1) ... [2024-11-27 20:13:20,172 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:13:19" (1/1) ... [2024-11-27 20:13:20,215 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 20:13:20,218 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 20:13:20,218 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 20:13:20,218 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 20:13:20,219 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:13:19" (1/1) ... [2024-11-27 20:13:20,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:13:20,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ae2ebd-7914-4466-9c1f-f8a32c7012b6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:13:20,267 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ae2ebd-7914-4466-9c1f-f8a32c7012b6/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 20:13:20,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ae2ebd-7914-4466-9c1f-f8a32c7012b6/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 20:13:20,305 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 20:13:20,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 20:13:20,306 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 20:13:20,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 20:13:20,405 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 20:13:20,407 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 20:13:24,411 INFO L? ?]: Removed 246 outVars from TransFormulas that were not future-live. [2024-11-27 20:13:24,412 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 20:13:24,452 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 20:13:24,452 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-27 20:13:24,452 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:13:24 BoogieIcfgContainer [2024-11-27 20:13:24,453 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 20:13:24,455 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 20:13:24,458 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 20:13:24,465 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 20:13:24,466 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 08:13:18" (1/3) ... [2024-11-27 20:13:24,467 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f062953 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:13:24, skipping insertion in model container [2024-11-27 20:13:24,467 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:13:19" (2/3) ... [2024-11-27 20:13:24,467 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f062953 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:13:24, skipping insertion in model container [2024-11-27 20:13:24,468 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:13:24" (3/3) ... [2024-11-27 20:13:24,470 INFO L128 eAbstractionObserver]: Analyzing ICFG Problem15_label59.c [2024-11-27 20:13:24,488 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 20:13:24,490 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem15_label59.c that has 1 procedures, 424 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-27 20:13:24,583 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 20:13:24,602 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;@1e87e95b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 20:13:24,603 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-27 20:13:24,612 INFO L276 IsEmpty]: Start isEmpty. Operand has 424 states, 422 states have (on average 1.7772511848341233) internal successors, (750), 423 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:13:24,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-27 20:13:24,624 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:13:24,625 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:13:24,625 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:13:24,631 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:13:24,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1425694346, now seen corresponding path program 1 times [2024-11-27 20:13:24,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:13:24,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125803916] [2024-11-27 20:13:24,642 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:13:24,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:13:24,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:13:25,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:13:25,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:13:25,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125803916] [2024-11-27 20:13:25,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125803916] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:13:25,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:13:25,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 20:13:25,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249022489] [2024-11-27 20:13:25,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:13:25,285 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:13:25,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:13:25,310 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:13:25,311 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:13:25,314 INFO L87 Difference]: Start difference. First operand has 424 states, 422 states have (on average 1.7772511848341233) internal successors, (750), 423 states have internal predecessors, (750), 0 states have call successors, (0), 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 18.0) internal successors, (54), 2 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:13:28,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:13:28,687 INFO L93 Difference]: Finished difference Result 1197 states and 2163 transitions. [2024-11-27 20:13:28,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:13:28,689 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 2 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2024-11-27 20:13:28,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:13:28,712 INFO L225 Difference]: With dead ends: 1197 [2024-11-27 20:13:28,712 INFO L226 Difference]: Without dead ends: 694 [2024-11-27 20:13:28,717 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 [2024-11-27 20:13:28,723 INFO L435 NwaCegarLoop]: 85 mSDtfsCounter, 364 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 1090 mSolverCounterSat, 304 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 364 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 1394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 304 IncrementalHoareTripleChecker+Valid, 1090 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-11-27 20:13:28,725 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [364 Valid, 114 Invalid, 1394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [304 Valid, 1090 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-11-27 20:13:28,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2024-11-27 20:13:28,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 684. [2024-11-27 20:13:28,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 683 states have (on average 1.718887262079063) internal successors, (1174), 683 states have internal predecessors, (1174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:13:28,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 1174 transitions. [2024-11-27 20:13:28,853 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 1174 transitions. Word has length 54 [2024-11-27 20:13:28,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:13:28,855 INFO L471 AbstractCegarLoop]: Abstraction has 684 states and 1174 transitions. [2024-11-27 20:13:28,855 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 2 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:13:28,856 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 1174 transitions. [2024-11-27 20:13:28,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-11-27 20:13:28,863 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:13:28,864 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, 2, 2, 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] [2024-11-27 20:13:28,864 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-27 20:13:28,865 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:13:28,865 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:13:28,866 INFO L85 PathProgramCache]: Analyzing trace with hash 1246806213, now seen corresponding path program 1 times [2024-11-27 20:13:28,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:13:28,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860451612] [2024-11-27 20:13:28,866 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:13:28,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:13:28,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:13:29,674 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:13:29,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:13:29,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860451612] [2024-11-27 20:13:29,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860451612] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:13:29,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:13:29,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 20:13:29,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603848807] [2024-11-27 20:13:29,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:13:29,679 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:13:29,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:13:29,680 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:13:29,680 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:13:29,680 INFO L87 Difference]: Start difference. First operand 684 states and 1174 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:13:32,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:13:32,208 INFO L93 Difference]: Finished difference Result 1681 states and 2896 transitions. [2024-11-27 20:13:32,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:13:32,209 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 states have internal predecessors, (119), 0 states have call successors, (0), 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 119 [2024-11-27 20:13:32,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:13:32,216 INFO L225 Difference]: With dead ends: 1681 [2024-11-27 20:13:32,216 INFO L226 Difference]: Without dead ends: 999 [2024-11-27 20:13:32,219 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 [2024-11-27 20:13:32,224 INFO L435 NwaCegarLoop]: 188 mSDtfsCounter, 254 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 1022 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 1127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 1022 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-27 20:13:32,225 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 226 Invalid, 1127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 1022 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-27 20:13:32,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 999 states. [2024-11-27 20:13:32,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 999 to 989. [2024-11-27 20:13:32,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 989 states, 988 states have (on average 1.6194331983805668) internal successors, (1600), 988 states have internal predecessors, (1600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:13:32,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 989 states to 989 states and 1600 transitions. [2024-11-27 20:13:32,294 INFO L78 Accepts]: Start accepts. Automaton has 989 states and 1600 transitions. Word has length 119 [2024-11-27 20:13:32,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:13:32,295 INFO L471 AbstractCegarLoop]: Abstraction has 989 states and 1600 transitions. [2024-11-27 20:13:32,297 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:13:32,298 INFO L276 IsEmpty]: Start isEmpty. Operand 989 states and 1600 transitions. [2024-11-27 20:13:32,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-11-27 20:13:32,306 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:13:32,306 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, 2, 2, 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] [2024-11-27 20:13:32,306 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-27 20:13:32,307 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:13:32,308 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:13:32,312 INFO L85 PathProgramCache]: Analyzing trace with hash -214871010, now seen corresponding path program 1 times [2024-11-27 20:13:32,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:13:32,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678343544] [2024-11-27 20:13:32,312 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:13:32,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:13:32,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:13:32,645 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:13:32,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:13:32,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678343544] [2024-11-27 20:13:32,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678343544] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:13:32,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:13:32,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 20:13:32,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009701304] [2024-11-27 20:13:32,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:13:32,648 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:13:32,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:13:32,649 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:13:32,651 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:13:32,651 INFO L87 Difference]: Start difference. First operand 989 states and 1600 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) [2024-11-27 20:13:37,132 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-27 20:13:39,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:13:39,105 INFO L93 Difference]: Finished difference Result 2575 states and 4255 transitions. [2024-11-27 20:13:39,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:13:39,107 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 [2024-11-27 20:13:39,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:13:39,116 INFO L225 Difference]: With dead ends: 2575 [2024-11-27 20:13:39,116 INFO L226 Difference]: Without dead ends: 1588 [2024-11-27 20:13:39,119 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 [2024-11-27 20:13:39,120 INFO L435 NwaCegarLoop]: 270 mSDtfsCounter, 284 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 791 mSolverCounterSat, 298 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 1089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 298 IncrementalHoareTripleChecker+Valid, 791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2024-11-27 20:13:39,122 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [284 Valid, 337 Invalid, 1089 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [298 Valid, 791 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2024-11-27 20:13:39,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1588 states. [2024-11-27 20:13:39,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1588 to 1584. [2024-11-27 20:13:39,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1584 states, 1583 states have (on average 1.3986102337334176) internal successors, (2214), 1583 states have internal predecessors, (2214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:13:39,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1584 states to 1584 states and 2214 transitions. [2024-11-27 20:13:39,177 INFO L78 Accepts]: Start accepts. Automaton has 1584 states and 2214 transitions. Word has length 120 [2024-11-27 20:13:39,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:13:39,178 INFO L471 AbstractCegarLoop]: Abstraction has 1584 states and 2214 transitions. [2024-11-27 20:13:39,178 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) [2024-11-27 20:13:39,178 INFO L276 IsEmpty]: Start isEmpty. Operand 1584 states and 2214 transitions. [2024-11-27 20:13:39,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-27 20:13:39,180 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:13:39,180 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, 2, 2, 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] [2024-11-27 20:13:39,180 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-27 20:13:39,180 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:13:39,181 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:13:39,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1115564308, now seen corresponding path program 1 times [2024-11-27 20:13:39,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:13:39,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51877964] [2024-11-27 20:13:39,182 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:13:39,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:13:39,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:13:39,705 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:13:39,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:13:39,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51877964] [2024-11-27 20:13:39,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51877964] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:13:39,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:13:39,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 20:13:39,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466826850] [2024-11-27 20:13:39,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:13:39,709 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:13:39,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:13:39,710 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:13:39,710 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:13:39,711 INFO L87 Difference]: Start difference. First operand 1584 states and 2214 transitions. Second operand has 5 states, 5 states have (on average 24.8) internal successors, (124), 4 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:13:42,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:13:42,918 INFO L93 Difference]: Finished difference Result 4082 states and 5880 transitions. [2024-11-27 20:13:42,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:13:42,919 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 4 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2024-11-27 20:13:42,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:13:42,931 INFO L225 Difference]: With dead ends: 4082 [2024-11-27 20:13:42,931 INFO L226 Difference]: Without dead ends: 2799 [2024-11-27 20:13:42,934 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:13:42,935 INFO L435 NwaCegarLoop]: 320 mSDtfsCounter, 345 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 1744 mSolverCounterSat, 415 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 2159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 415 IncrementalHoareTripleChecker+Valid, 1744 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:13:42,935 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [345 Valid, 418 Invalid, 2159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [415 Valid, 1744 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-27 20:13:42,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2799 states. [2024-11-27 20:13:42,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2799 to 2483. [2024-11-27 20:13:42,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2483 states, 2482 states have (on average 1.2961321514907334) internal successors, (3217), 2482 states have internal predecessors, (3217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:13:43,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2483 states to 2483 states and 3217 transitions. [2024-11-27 20:13:43,008 INFO L78 Accepts]: Start accepts. Automaton has 2483 states and 3217 transitions. Word has length 124 [2024-11-27 20:13:43,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:13:43,009 INFO L471 AbstractCegarLoop]: Abstraction has 2483 states and 3217 transitions. [2024-11-27 20:13:43,009 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 4 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:13:43,009 INFO L276 IsEmpty]: Start isEmpty. Operand 2483 states and 3217 transitions. [2024-11-27 20:13:43,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-27 20:13:43,011 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:13:43,012 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, 2, 2, 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] [2024-11-27 20:13:43,012 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-27 20:13:43,012 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:13:43,012 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:13:43,013 INFO L85 PathProgramCache]: Analyzing trace with hash 1684612182, now seen corresponding path program 1 times [2024-11-27 20:13:43,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:13:43,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032075436] [2024-11-27 20:13:43,013 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:13:43,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:13:43,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:13:43,341 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:13:43,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:13:43,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032075436] [2024-11-27 20:13:43,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032075436] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:13:43,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:13:43,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:13:43,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902779115] [2024-11-27 20:13:43,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:13:43,343 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:13:43,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:13:43,344 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:13:43,344 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:13:43,345 INFO L87 Difference]: Start difference. First operand 2483 states and 3217 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:13:45,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:13:45,972 INFO L93 Difference]: Finished difference Result 7358 states and 9526 transitions. [2024-11-27 20:13:45,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:13:45,973 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 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 145 [2024-11-27 20:13:45,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:13:45,987 INFO L225 Difference]: With dead ends: 7358 [2024-11-27 20:13:45,987 INFO L226 Difference]: Without dead ends: 3681 [2024-11-27 20:13:45,992 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 [2024-11-27 20:13:45,993 INFO L435 NwaCegarLoop]: 569 mSDtfsCounter, 290 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 812 mSolverCounterSat, 299 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 612 SdHoareTripleChecker+Invalid, 1111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 299 IncrementalHoareTripleChecker+Valid, 812 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-27 20:13:45,993 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [290 Valid, 612 Invalid, 1111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [299 Valid, 812 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-27 20:13:45,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3681 states. [2024-11-27 20:13:46,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3681 to 3681. [2024-11-27 20:13:46,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3681 states, 3680 states have (on average 1.1695652173913043) internal successors, (4304), 3680 states have internal predecessors, (4304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:13:46,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3681 states to 3681 states and 4304 transitions. [2024-11-27 20:13:46,092 INFO L78 Accepts]: Start accepts. Automaton has 3681 states and 4304 transitions. Word has length 145 [2024-11-27 20:13:46,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:13:46,092 INFO L471 AbstractCegarLoop]: Abstraction has 3681 states and 4304 transitions. [2024-11-27 20:13:46,092 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:13:46,093 INFO L276 IsEmpty]: Start isEmpty. Operand 3681 states and 4304 transitions. [2024-11-27 20:13:46,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2024-11-27 20:13:46,097 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:13:46,097 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:13:46,097 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-27 20:13:46,097 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:13:46,098 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:13:46,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1210416382, now seen corresponding path program 1 times [2024-11-27 20:13:46,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:13:46,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947791816] [2024-11-27 20:13:46,099 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:13:46,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:13:46,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:13:46,753 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:13:46,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:13:46,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947791816] [2024-11-27 20:13:46,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947791816] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:13:46,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:13:46,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:13:46,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633424738] [2024-11-27 20:13:46,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:13:46,755 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:13:46,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:13:46,756 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:13:46,759 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:13:46,760 INFO L87 Difference]: Start difference. First operand 3681 states and 4304 transitions. Second operand has 4 states, 4 states have (on average 71.75) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:13:50,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:13:50,181 INFO L93 Difference]: Finished difference Result 11273 states and 13177 transitions. [2024-11-27 20:13:50,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:13:50,181 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 71.75) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 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 287 [2024-11-27 20:13:50,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:13:50,201 INFO L225 Difference]: With dead ends: 11273 [2024-11-27 20:13:50,202 INFO L226 Difference]: Without dead ends: 7295 [2024-11-27 20:13:50,207 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:13:50,208 INFO L435 NwaCegarLoop]: 64 mSDtfsCounter, 455 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 1717 mSolverCounterSat, 290 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 455 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 2007 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 290 IncrementalHoareTripleChecker+Valid, 1717 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-27 20:13:50,208 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [455 Valid, 124 Invalid, 2007 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [290 Valid, 1717 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-27 20:13:50,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7295 states. [2024-11-27 20:13:50,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7295 to 6081. [2024-11-27 20:13:50,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6081 states, 6080 states have (on average 1.1837171052631579) internal successors, (7197), 6080 states have internal predecessors, (7197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:13:50,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6081 states to 6081 states and 7197 transitions. [2024-11-27 20:13:50,369 INFO L78 Accepts]: Start accepts. Automaton has 6081 states and 7197 transitions. Word has length 287 [2024-11-27 20:13:50,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:13:50,370 INFO L471 AbstractCegarLoop]: Abstraction has 6081 states and 7197 transitions. [2024-11-27 20:13:50,370 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.75) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:13:50,371 INFO L276 IsEmpty]: Start isEmpty. Operand 6081 states and 7197 transitions. [2024-11-27 20:13:50,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2024-11-27 20:13:50,380 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:13:50,380 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:13:50,381 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-27 20:13:50,382 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:13:50,382 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:13:50,383 INFO L85 PathProgramCache]: Analyzing trace with hash 1076396748, now seen corresponding path program 1 times [2024-11-27 20:13:50,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:13:50,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817295834] [2024-11-27 20:13:50,383 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:13:50,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:13:50,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:13:51,595 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:13:51,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:13:51,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817295834] [2024-11-27 20:13:51,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817295834] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:13:51,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [515685497] [2024-11-27 20:13:51,596 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:13:51,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:13:51,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ae2ebd-7914-4466-9c1f-f8a32c7012b6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:13:51,601 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ae2ebd-7914-4466-9c1f-f8a32c7012b6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:13:51,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ae2ebd-7914-4466-9c1f-f8a32c7012b6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 20:13:51,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:13:51,808 INFO L256 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-27 20:13:51,824 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:13:52,049 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:13:52,049 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:13:52,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [515685497] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:13:52,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:13:52,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-27 20:13:52,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550702255] [2024-11-27 20:13:52,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:13:52,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:13:52,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:13:52,052 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:13:52,053 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:13:52,053 INFO L87 Difference]: Start difference. First operand 6081 states and 7197 transitions. Second operand has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:13:53,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:13:53,680 INFO L93 Difference]: Finished difference Result 12161 states and 14395 transitions. [2024-11-27 20:13:53,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:13:53,681 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 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 324 [2024-11-27 20:13:53,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:13:53,694 INFO L225 Difference]: With dead ends: 12161 [2024-11-27 20:13:53,694 INFO L226 Difference]: Without dead ends: 6082 [2024-11-27 20:13:53,700 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 323 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:13:53,701 INFO L435 NwaCegarLoop]: 406 mSDtfsCounter, 331 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 817 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-27 20:13:53,701 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [331 Valid, 418 Invalid, 965 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 817 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-27 20:13:53,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6082 states. [2024-11-27 20:13:53,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6082 to 6079. [2024-11-27 20:13:53,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6079 states, 6078 states have (on average 1.1615663047054952) internal successors, (7060), 6078 states have internal predecessors, (7060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:13:53,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6079 states to 6079 states and 7060 transitions. [2024-11-27 20:13:53,839 INFO L78 Accepts]: Start accepts. Automaton has 6079 states and 7060 transitions. Word has length 324 [2024-11-27 20:13:53,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:13:53,840 INFO L471 AbstractCegarLoop]: Abstraction has 6079 states and 7060 transitions. [2024-11-27 20:13:53,841 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:13:53,841 INFO L276 IsEmpty]: Start isEmpty. Operand 6079 states and 7060 transitions. [2024-11-27 20:13:53,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2024-11-27 20:13:53,847 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:13:53,847 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, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:13:53,859 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ae2ebd-7914-4466-9c1f-f8a32c7012b6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-27 20:13:54,048 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ae2ebd-7914-4466-9c1f-f8a32c7012b6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:13:54,048 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:13:54,049 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:13:54,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1202719056, now seen corresponding path program 1 times [2024-11-27 20:13:54,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:13:54,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800971288] [2024-11-27 20:13:54,049 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:13:54,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:13:54,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:13:54,952 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 137 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-11-27 20:13:54,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:13:54,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800971288] [2024-11-27 20:13:54,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800971288] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:13:54,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:13:54,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 20:13:54,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574971812] [2024-11-27 20:13:54,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:13:54,954 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:13:54,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:13:54,954 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:13:54,955 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:13:54,955 INFO L87 Difference]: Start difference. First operand 6079 states and 7060 transitions. Second operand has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 2 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:13:56,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:13:56,759 INFO L93 Difference]: Finished difference Result 12455 states and 14421 transitions. [2024-11-27 20:13:56,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:13:56,760 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 2 states have internal predecessors, (286), 0 states have call successors, (0), 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 337 [2024-11-27 20:13:56,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:13:56,787 INFO L225 Difference]: With dead ends: 12455 [2024-11-27 20:13:56,788 INFO L226 Difference]: Without dead ends: 6378 [2024-11-27 20:13:56,793 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 [2024-11-27 20:13:56,795 INFO L435 NwaCegarLoop]: 268 mSDtfsCounter, 105 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 824 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 824 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-27 20:13:56,795 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 303 Invalid, 825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 824 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-27 20:13:56,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6378 states. [2024-11-27 20:13:56,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6378 to 6378. [2024-11-27 20:13:56,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6378 states, 6377 states have (on average 1.1543045319115572) internal successors, (7361), 6377 states have internal predecessors, (7361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:13:56,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6378 states to 6378 states and 7361 transitions. [2024-11-27 20:13:56,943 INFO L78 Accepts]: Start accepts. Automaton has 6378 states and 7361 transitions. Word has length 337 [2024-11-27 20:13:56,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:13:56,946 INFO L471 AbstractCegarLoop]: Abstraction has 6378 states and 7361 transitions. [2024-11-27 20:13:56,946 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 2 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:13:56,946 INFO L276 IsEmpty]: Start isEmpty. Operand 6378 states and 7361 transitions. [2024-11-27 20:13:56,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2024-11-27 20:13:56,955 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:13:56,955 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, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:13:56,955 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-27 20:13:56,956 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:13:56,956 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:13:56,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1561735070, now seen corresponding path program 1 times [2024-11-27 20:13:56,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:13:56,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896058480] [2024-11-27 20:13:56,961 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:13:56,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:13:57,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:13:58,515 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 103 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:13:58,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:13:58,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896058480] [2024-11-27 20:13:58,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896058480] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:13:58,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1179434293] [2024-11-27 20:13:58,517 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:13:58,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:13:58,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ae2ebd-7914-4466-9c1f-f8a32c7012b6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:13:58,519 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ae2ebd-7914-4466-9c1f-f8a32c7012b6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:13:58,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ae2ebd-7914-4466-9c1f-f8a32c7012b6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 20:13:58,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:13:58,768 INFO L256 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-27 20:13:58,778 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:13:59,004 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 189 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:13:59,004 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:13:59,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1179434293] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:13:59,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:13:59,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-11-27 20:13:59,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186746041] [2024-11-27 20:13:59,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:13:59,006 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:13:59,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:13:59,007 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:13:59,007 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:13:59,008 INFO L87 Difference]: Start difference. First operand 6378 states and 7361 transitions. Second operand has 3 states, 3 states have (on average 137.0) internal successors, (411), 3 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:14:00,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:14:00,632 INFO L93 Difference]: Finished difference Result 15450 states and 18175 transitions. [2024-11-27 20:14:00,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:14:00,633 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 137.0) internal successors, (411), 3 states have internal predecessors, (411), 0 states have call successors, (0), 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 411 [2024-11-27 20:14:00,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:14:00,656 INFO L225 Difference]: With dead ends: 15450 [2024-11-27 20:14:00,657 INFO L226 Difference]: Without dead ends: 9373 [2024-11-27 20:14:00,663 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 415 GetRequests, 410 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:14:00,663 INFO L435 NwaCegarLoop]: 237 mSDtfsCounter, 245 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 806 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 1007 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-27 20:14:00,664 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 269 Invalid, 1007 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 806 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-27 20:14:00,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9373 states. [2024-11-27 20:14:00,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9373 to 9367. [2024-11-27 20:14:00,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9367 states, 9366 states have (on average 1.1273756139226991) internal successors, (10559), 9366 states have internal predecessors, (10559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:14:00,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9367 states to 9367 states and 10559 transitions. [2024-11-27 20:14:00,828 INFO L78 Accepts]: Start accepts. Automaton has 9367 states and 10559 transitions. Word has length 411 [2024-11-27 20:14:00,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:14:00,829 INFO L471 AbstractCegarLoop]: Abstraction has 9367 states and 10559 transitions. [2024-11-27 20:14:00,830 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 137.0) internal successors, (411), 3 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:14:00,830 INFO L276 IsEmpty]: Start isEmpty. Operand 9367 states and 10559 transitions. [2024-11-27 20:14:00,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2024-11-27 20:14:00,841 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:14:00,841 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:14:00,852 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ae2ebd-7914-4466-9c1f-f8a32c7012b6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-27 20:14:01,042 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ae2ebd-7914-4466-9c1f-f8a32c7012b6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:14:01,042 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:14:01,043 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:14:01,043 INFO L85 PathProgramCache]: Analyzing trace with hash -1389467139, now seen corresponding path program 1 times [2024-11-27 20:14:01,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:14:01,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431197478] [2024-11-27 20:14:01,044 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:14:01,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:14:01,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:14:02,003 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2024-11-27 20:14:02,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:14:02,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431197478] [2024-11-27 20:14:02,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431197478] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:14:02,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:14:02,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:14:02,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203124672] [2024-11-27 20:14:02,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:14:02,004 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:14:02,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:14:02,005 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:14:02,005 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:14:02,006 INFO L87 Difference]: Start difference. First operand 9367 states and 10559 transitions. Second operand has 4 states, 4 states have (on average 81.5) internal successors, (326), 3 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:14:05,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:14:05,338 INFO L93 Difference]: Finished difference Result 22043 states and 24950 transitions. [2024-11-27 20:14:05,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:14:05,339 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 81.5) internal successors, (326), 3 states have internal predecessors, (326), 0 states have call successors, (0), 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 467 [2024-11-27 20:14:05,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:14:05,369 INFO L225 Difference]: With dead ends: 22043 [2024-11-27 20:14:05,369 INFO L226 Difference]: Without dead ends: 12678 [2024-11-27 20:14:05,377 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:14:05,378 INFO L435 NwaCegarLoop]: 66 mSDtfsCounter, 433 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 1663 mSolverCounterSat, 484 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 433 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 2147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 484 IncrementalHoareTripleChecker+Valid, 1663 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-11-27 20:14:05,379 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [433 Valid, 123 Invalid, 2147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [484 Valid, 1663 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-11-27 20:14:05,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12678 states. [2024-11-27 20:14:05,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12678 to 9369. [2024-11-27 20:14:05,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9369 states, 9368 states have (on average 1.1258539709649873) internal successors, (10547), 9368 states have internal predecessors, (10547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:14:05,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9369 states to 9369 states and 10547 transitions. [2024-11-27 20:14:05,546 INFO L78 Accepts]: Start accepts. Automaton has 9369 states and 10547 transitions. Word has length 467 [2024-11-27 20:14:05,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:14:05,547 INFO L471 AbstractCegarLoop]: Abstraction has 9369 states and 10547 transitions. [2024-11-27 20:14:05,547 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 81.5) internal successors, (326), 3 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:14:05,547 INFO L276 IsEmpty]: Start isEmpty. Operand 9369 states and 10547 transitions. [2024-11-27 20:14:05,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 542 [2024-11-27 20:14:05,562 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:14:05,563 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:14:05,563 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-27 20:14:05,563 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:14:05,564 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:14:05,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1124054340, now seen corresponding path program 1 times [2024-11-27 20:14:05,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:14:05,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111865703] [2024-11-27 20:14:05,564 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:14:05,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:14:05,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:14:07,689 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 262 proven. 215 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:14:07,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:14:07,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111865703] [2024-11-27 20:14:07,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111865703] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:14:07,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [580481425] [2024-11-27 20:14:07,690 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:14:07,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:14:07,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ae2ebd-7914-4466-9c1f-f8a32c7012b6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:14:07,693 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ae2ebd-7914-4466-9c1f-f8a32c7012b6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:14:07,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ae2ebd-7914-4466-9c1f-f8a32c7012b6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-27 20:14:07,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:14:07,965 INFO L256 TraceCheckSpWp]: Trace formula consists of 653 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-27 20:14:07,975 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:14:08,112 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 155 proven. 0 refuted. 0 times theorem prover too weak. 322 trivial. 0 not checked. [2024-11-27 20:14:08,112 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:14:08,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [580481425] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:14:08,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:14:08,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-27 20:14:08,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215158498] [2024-11-27 20:14:08,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:14:08,114 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:14:08,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:14:08,115 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:14:08,115 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:14:08,115 INFO L87 Difference]: Start difference. First operand 9369 states and 10547 transitions. Second operand has 3 states, 3 states have (on average 109.0) internal successors, (327), 3 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:14:09,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:14:09,979 INFO L93 Difference]: Finished difference Result 22024 states and 24970 transitions. [2024-11-27 20:14:09,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:14:09,980 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 109.0) internal successors, (327), 3 states have internal predecessors, (327), 0 states have call successors, (0), 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 541 [2024-11-27 20:14:09,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:14:10,010 INFO L225 Difference]: With dead ends: 22024 [2024-11-27 20:14:10,010 INFO L226 Difference]: Without dead ends: 12956 [2024-11-27 20:14:10,017 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 547 GetRequests, 542 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:14:10,018 INFO L435 NwaCegarLoop]: 425 mSDtfsCounter, 362 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 859 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 445 SdHoareTripleChecker+Invalid, 985 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-27 20:14:10,018 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [362 Valid, 445 Invalid, 985 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 859 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-27 20:14:10,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12956 states. [2024-11-27 20:14:10,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12956 to 10863. [2024-11-27 20:14:10,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10863 states, 10862 states have (on average 1.134045295525686) internal successors, (12318), 10862 states have internal predecessors, (12318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:14:10,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10863 states to 10863 states and 12318 transitions. [2024-11-27 20:14:10,181 INFO L78 Accepts]: Start accepts. Automaton has 10863 states and 12318 transitions. Word has length 541 [2024-11-27 20:14:10,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:14:10,182 INFO L471 AbstractCegarLoop]: Abstraction has 10863 states and 12318 transitions. [2024-11-27 20:14:10,182 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.0) internal successors, (327), 3 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:14:10,182 INFO L276 IsEmpty]: Start isEmpty. Operand 10863 states and 12318 transitions. [2024-11-27 20:14:10,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 588 [2024-11-27 20:14:10,202 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:14:10,205 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:14:10,216 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ae2ebd-7914-4466-9c1f-f8a32c7012b6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-27 20:14:10,407 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ae2ebd-7914-4466-9c1f-f8a32c7012b6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:14:10,408 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:14:10,408 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:14:10,408 INFO L85 PathProgramCache]: Analyzing trace with hash 112753897, now seen corresponding path program 1 times [2024-11-27 20:14:10,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:14:10,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138842967] [2024-11-27 20:14:10,409 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:14:10,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:14:10,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:14:11,911 INFO L134 CoverageAnalysis]: Checked inductivity of 686 backedges. 462 proven. 172 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-11-27 20:14:11,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:14:11,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138842967] [2024-11-27 20:14:11,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138842967] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:14:11,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1245251922] [2024-11-27 20:14:11,912 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:14:11,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:14:11,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ae2ebd-7914-4466-9c1f-f8a32c7012b6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:14:11,916 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ae2ebd-7914-4466-9c1f-f8a32c7012b6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:14:11,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ae2ebd-7914-4466-9c1f-f8a32c7012b6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-27 20:14:12,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:14:12,208 INFO L256 TraceCheckSpWp]: Trace formula consists of 726 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-27 20:14:12,222 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:14:12,378 INFO L134 CoverageAnalysis]: Checked inductivity of 686 backedges. 528 proven. 0 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2024-11-27 20:14:12,378 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:14:12,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1245251922] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:14:12,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:14:12,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-27 20:14:12,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902619420] [2024-11-27 20:14:12,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:14:12,380 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:14:12,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:14:12,381 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:14:12,381 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:14:12,381 INFO L87 Difference]: Start difference. First operand 10863 states and 12318 transitions. Second operand has 3 states, 3 states have (on average 143.66666666666666) internal successors, (431), 3 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:14:13,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:14:13,967 INFO L93 Difference]: Finished difference Result 21430 states and 24339 transitions. [2024-11-27 20:14:13,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:14:13,968 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 143.66666666666666) internal successors, (431), 3 states have internal predecessors, (431), 0 states have call successors, (0), 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 587 [2024-11-27 20:14:13,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:14:13,988 INFO L225 Difference]: With dead ends: 21430 [2024-11-27 20:14:13,988 INFO L226 Difference]: Without dead ends: 10868 [2024-11-27 20:14:13,994 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 592 GetRequests, 587 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:14:13,995 INFO L435 NwaCegarLoop]: 453 mSDtfsCounter, 301 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 820 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 820 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-27 20:14:13,995 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [301 Valid, 477 Invalid, 940 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 820 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-27 20:14:14,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10868 states. [2024-11-27 20:14:14,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10868 to 10562. [2024-11-27 20:14:14,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10562 states, 10561 states have (on average 1.1160874917147998) internal successors, (11787), 10561 states have internal predecessors, (11787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:14:14,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10562 states to 10562 states and 11787 transitions. [2024-11-27 20:14:14,147 INFO L78 Accepts]: Start accepts. Automaton has 10562 states and 11787 transitions. Word has length 587 [2024-11-27 20:14:14,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:14:14,148 INFO L471 AbstractCegarLoop]: Abstraction has 10562 states and 11787 transitions. [2024-11-27 20:14:14,148 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 143.66666666666666) internal successors, (431), 3 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:14:14,148 INFO L276 IsEmpty]: Start isEmpty. Operand 10562 states and 11787 transitions. [2024-11-27 20:14:14,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 592 [2024-11-27 20:14:14,157 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:14:14,158 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:14:14,170 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ae2ebd-7914-4466-9c1f-f8a32c7012b6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-27 20:14:14,358 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ae2ebd-7914-4466-9c1f-f8a32c7012b6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:14:14,359 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:14:14,359 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:14:14,360 INFO L85 PathProgramCache]: Analyzing trace with hash -162764234, now seen corresponding path program 1 times [2024-11-27 20:14:14,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:14:14,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847820882] [2024-11-27 20:14:14,360 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:14:14,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:14:14,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:14:15,383 INFO L134 CoverageAnalysis]: Checked inductivity of 527 backedges. 421 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-11-27 20:14:15,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:14:15,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847820882] [2024-11-27 20:14:15,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847820882] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:14:15,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:14:15,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:14:15,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134272530] [2024-11-27 20:14:15,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:14:15,386 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:14:15,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:14:15,387 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:14:15,387 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:14:15,388 INFO L87 Difference]: Start difference. First operand 10562 states and 11787 transitions. Second operand has 3 states, 3 states have (on average 162.0) internal successors, (486), 3 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:14:16,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:14:16,967 INFO L93 Difference]: Finished difference Result 23216 states and 26123 transitions. [2024-11-27 20:14:16,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:14:16,968 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 162.0) internal successors, (486), 3 states have internal predecessors, (486), 0 states have call successors, (0), 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 591 [2024-11-27 20:14:16,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:14:16,981 INFO L225 Difference]: With dead ends: 23216 [2024-11-27 20:14:16,981 INFO L226 Difference]: Without dead ends: 12955 [2024-11-27 20:14:16,990 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:14:16,991 INFO L435 NwaCegarLoop]: 128 mSDtfsCounter, 215 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 772 mSolverCounterSat, 255 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 1027 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 255 IncrementalHoareTripleChecker+Valid, 772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-27 20:14:16,991 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 143 Invalid, 1027 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [255 Valid, 772 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-27 20:14:17,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12955 states. [2024-11-27 20:14:17,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12955 to 12057. [2024-11-27 20:14:17,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12057 states, 12056 states have (on average 1.1127239548772396) internal successors, (13415), 12056 states have internal predecessors, (13415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:14:17,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12057 states to 12057 states and 13415 transitions. [2024-11-27 20:14:17,158 INFO L78 Accepts]: Start accepts. Automaton has 12057 states and 13415 transitions. Word has length 591 [2024-11-27 20:14:17,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:14:17,159 INFO L471 AbstractCegarLoop]: Abstraction has 12057 states and 13415 transitions. [2024-11-27 20:14:17,159 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 162.0) internal successors, (486), 3 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:14:17,160 INFO L276 IsEmpty]: Start isEmpty. Operand 12057 states and 13415 transitions. [2024-11-27 20:14:17,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 644 [2024-11-27 20:14:17,169 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:14:17,170 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:14:17,170 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-27 20:14:17,170 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:14:17,171 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:14:17,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1663494512, now seen corresponding path program 1 times [2024-11-27 20:14:17,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:14:17,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364613363] [2024-11-27 20:14:17,172 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:14:17,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:14:17,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:14:17,743 INFO L134 CoverageAnalysis]: Checked inductivity of 768 backedges. 610 proven. 0 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2024-11-27 20:14:17,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:14:17,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364613363] [2024-11-27 20:14:17,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364613363] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:14:17,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:14:17,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:14:17,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958665598] [2024-11-27 20:14:17,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:14:17,748 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:14:17,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:14:17,749 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:14:17,749 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:14:17,749 INFO L87 Difference]: Start difference. First operand 12057 states and 13415 transitions. Second operand has 3 states, 3 states have (on average 162.33333333333334) internal successors, (487), 3 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:14:19,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:14:19,504 INFO L93 Difference]: Finished difference Result 26509 states and 29555 transitions. [2024-11-27 20:14:19,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:14:19,505 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 162.33333333333334) internal successors, (487), 3 states have internal predecessors, (487), 0 states have call successors, (0), 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 643 [2024-11-27 20:14:19,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:14:19,523 INFO L225 Difference]: With dead ends: 26509 [2024-11-27 20:14:19,523 INFO L226 Difference]: Without dead ends: 14753 [2024-11-27 20:14:19,532 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 [2024-11-27 20:14:19,533 INFO L435 NwaCegarLoop]: 539 mSDtfsCounter, 254 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 829 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 576 SdHoareTripleChecker+Invalid, 909 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 829 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-27 20:14:19,533 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 576 Invalid, 909 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 829 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-27 20:14:19,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14753 states. [2024-11-27 20:14:19,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14753 to 13851. [2024-11-27 20:14:19,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13851 states, 13850 states have (on average 1.107870036101083) internal successors, (15344), 13850 states have internal predecessors, (15344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:14:19,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13851 states to 13851 states and 15344 transitions. [2024-11-27 20:14:19,729 INFO L78 Accepts]: Start accepts. Automaton has 13851 states and 15344 transitions. Word has length 643 [2024-11-27 20:14:19,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:14:19,730 INFO L471 AbstractCegarLoop]: Abstraction has 13851 states and 15344 transitions. [2024-11-27 20:14:19,730 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 162.33333333333334) internal successors, (487), 3 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:14:19,730 INFO L276 IsEmpty]: Start isEmpty. Operand 13851 states and 15344 transitions. [2024-11-27 20:14:19,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 669 [2024-11-27 20:14:19,741 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:14:19,742 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:14:19,742 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-27 20:14:19,742 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:14:19,743 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:14:19,743 INFO L85 PathProgramCache]: Analyzing trace with hash -1759415692, now seen corresponding path program 1 times [2024-11-27 20:14:19,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:14:19,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138360971] [2024-11-27 20:14:19,744 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:14:19,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:14:19,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:14:20,367 INFO L134 CoverageAnalysis]: Checked inductivity of 829 backedges. 467 proven. 0 refuted. 0 times theorem prover too weak. 362 trivial. 0 not checked. [2024-11-27 20:14:20,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:14:20,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138360971] [2024-11-27 20:14:20,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138360971] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:14:20,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:14:20,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:14:20,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702907137] [2024-11-27 20:14:20,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:14:20,370 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:14:20,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:14:20,371 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:14:20,371 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:14:20,371 INFO L87 Difference]: Start difference. First operand 13851 states and 15344 transitions. Second operand has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:14:21,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:14:21,938 INFO L93 Difference]: Finished difference Result 27401 states and 30385 transitions. [2024-11-27 20:14:21,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:14:21,938 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 0 states have call successors, (0), 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 668 [2024-11-27 20:14:21,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:14:21,955 INFO L225 Difference]: With dead ends: 27401 [2024-11-27 20:14:21,955 INFO L226 Difference]: Without dead ends: 13851 [2024-11-27 20:14:21,963 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 [2024-11-27 20:14:21,964 INFO L435 NwaCegarLoop]: 556 mSDtfsCounter, 224 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 830 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 592 SdHoareTripleChecker+Invalid, 903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 830 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-27 20:14:21,964 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 592 Invalid, 903 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 830 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-27 20:14:21,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13851 states. [2024-11-27 20:14:22,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13851 to 13851. [2024-11-27 20:14:22,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13851 states, 13850 states have (on average 1.0927797833935018) internal successors, (15135), 13850 states have internal predecessors, (15135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:14:22,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13851 states to 13851 states and 15135 transitions. [2024-11-27 20:14:22,155 INFO L78 Accepts]: Start accepts. Automaton has 13851 states and 15135 transitions. Word has length 668 [2024-11-27 20:14:22,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:14:22,156 INFO L471 AbstractCegarLoop]: Abstraction has 13851 states and 15135 transitions. [2024-11-27 20:14:22,156 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:14:22,157 INFO L276 IsEmpty]: Start isEmpty. Operand 13851 states and 15135 transitions. [2024-11-27 20:14:22,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 671 [2024-11-27 20:14:22,167 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:14:22,167 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:14:22,168 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-27 20:14:22,168 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:14:22,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:14:22,169 INFO L85 PathProgramCache]: Analyzing trace with hash 434787481, now seen corresponding path program 1 times [2024-11-27 20:14:22,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:14:22,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712775178] [2024-11-27 20:14:22,169 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:14:22,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:14:22,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:14:22,869 INFO L134 CoverageAnalysis]: Checked inductivity of 831 backedges. 467 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-11-27 20:14:22,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:14:22,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712775178] [2024-11-27 20:14:22,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712775178] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:14:22,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:14:22,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:14:22,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40896246] [2024-11-27 20:14:22,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:14:22,871 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:14:22,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:14:22,872 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:14:22,872 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:14:22,872 INFO L87 Difference]: Start difference. First operand 13851 states and 15135 transitions. Second operand has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:14:24,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:14:24,815 INFO L93 Difference]: Finished difference Result 32808 states and 35792 transitions. [2024-11-27 20:14:24,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:14:24,816 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 0 states have call successors, (0), 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 670 [2024-11-27 20:14:24,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:14:24,834 INFO L225 Difference]: With dead ends: 32808 [2024-11-27 20:14:24,834 INFO L226 Difference]: Without dead ends: 19258 [2024-11-27 20:14:24,842 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 [2024-11-27 20:14:24,843 INFO L435 NwaCegarLoop]: 560 mSDtfsCounter, 238 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 932 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 598 SdHoareTripleChecker+Invalid, 1067 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 932 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-27 20:14:24,843 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 598 Invalid, 1067 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 932 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-27 20:14:24,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19258 states. [2024-11-27 20:14:25,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19258 to 18947. [2024-11-27 20:14:25,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18947 states, 18946 states have (on average 1.0803863612372004) internal successors, (20469), 18946 states have internal predecessors, (20469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:14:25,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18947 states to 18947 states and 20469 transitions. [2024-11-27 20:14:25,053 INFO L78 Accepts]: Start accepts. Automaton has 18947 states and 20469 transitions. Word has length 670 [2024-11-27 20:14:25,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:14:25,053 INFO L471 AbstractCegarLoop]: Abstraction has 18947 states and 20469 transitions. [2024-11-27 20:14:25,054 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:14:25,054 INFO L276 IsEmpty]: Start isEmpty. Operand 18947 states and 20469 transitions. [2024-11-27 20:14:25,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 699 [2024-11-27 20:14:25,060 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:14:25,060 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-27 20:14:25,061 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-27 20:14:25,061 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:14:25,061 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:14:25,062 INFO L85 PathProgramCache]: Analyzing trace with hash -1256968810, now seen corresponding path program 1 times [2024-11-27 20:14:25,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:14:25,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463056061] [2024-11-27 20:14:25,062 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:14:25,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:14:25,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:14:26,896 INFO L134 CoverageAnalysis]: Checked inductivity of 634 backedges. 262 proven. 372 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:14:26,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:14:26,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463056061] [2024-11-27 20:14:26,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463056061] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:14:26,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [925679231] [2024-11-27 20:14:26,898 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:14:26,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:14:26,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ae2ebd-7914-4466-9c1f-f8a32c7012b6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:14:26,900 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ae2ebd-7914-4466-9c1f-f8a32c7012b6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:14:26,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ae2ebd-7914-4466-9c1f-f8a32c7012b6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-27 20:14:27,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:14:27,218 INFO L256 TraceCheckSpWp]: Trace formula consists of 814 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-27 20:14:27,226 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:14:27,466 INFO L134 CoverageAnalysis]: Checked inductivity of 634 backedges. 155 proven. 0 refuted. 0 times theorem prover too weak. 479 trivial. 0 not checked. [2024-11-27 20:14:27,466 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:14:27,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [925679231] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:14:27,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:14:27,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-11-27 20:14:27,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498322207] [2024-11-27 20:14:27,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:14:27,468 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:14:27,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:14:27,469 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:14:27,469 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-27 20:14:27,470 INFO L87 Difference]: Start difference. First operand 18947 states and 20469 transitions. Second operand has 3 states, 3 states have (on average 109.0) internal successors, (327), 3 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:14:29,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:14:29,659 INFO L93 Difference]: Finished difference Result 45403 states and 49072 transitions. [2024-11-27 20:14:29,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:14:29,659 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 109.0) internal successors, (327), 3 states have internal predecessors, (327), 0 states have call successors, (0), 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 698 [2024-11-27 20:14:29,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:14:29,687 INFO L225 Difference]: With dead ends: 45403 [2024-11-27 20:14:29,687 INFO L226 Difference]: Without dead ends: 24066 [2024-11-27 20:14:29,701 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 703 GetRequests, 697 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-27 20:14:29,702 INFO L435 NwaCegarLoop]: 414 mSDtfsCounter, 346 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 850 mSolverCounterSat, 225 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 1075 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 225 IncrementalHoareTripleChecker+Valid, 850 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:14:29,702 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [346 Valid, 439 Invalid, 1075 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [225 Valid, 850 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-27 20:14:29,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24066 states. [2024-11-27 20:14:29,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24066 to 20468. [2024-11-27 20:14:29,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20468 states, 20467 states have (on average 1.0687448087164704) internal successors, (21874), 20467 states have internal predecessors, (21874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:14:29,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20468 states to 20468 states and 21874 transitions. [2024-11-27 20:14:29,974 INFO L78 Accepts]: Start accepts. Automaton has 20468 states and 21874 transitions. Word has length 698 [2024-11-27 20:14:29,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:14:29,975 INFO L471 AbstractCegarLoop]: Abstraction has 20468 states and 21874 transitions. [2024-11-27 20:14:29,975 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.0) internal successors, (327), 3 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:14:29,975 INFO L276 IsEmpty]: Start isEmpty. Operand 20468 states and 21874 transitions. [2024-11-27 20:14:29,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 707 [2024-11-27 20:14:29,986 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:14:29,986 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:14:29,998 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ae2ebd-7914-4466-9c1f-f8a32c7012b6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-27 20:14:30,187 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ae2ebd-7914-4466-9c1f-f8a32c7012b6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:14:30,187 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:14:30,188 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:14:30,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1969280993, now seen corresponding path program 1 times [2024-11-27 20:14:30,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:14:30,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282195963] [2024-11-27 20:14:30,189 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:14:30,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:14:30,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:14:31,472 INFO L134 CoverageAnalysis]: Checked inductivity of 932 backedges. 588 proven. 0 refuted. 0 times theorem prover too weak. 344 trivial. 0 not checked. [2024-11-27 20:14:31,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:14:31,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282195963] [2024-11-27 20:14:31,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282195963] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:14:31,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:14:31,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 20:14:31,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146938254] [2024-11-27 20:14:31,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:14:31,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:14:31,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:14:31,475 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:14:31,475 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:14:31,476 INFO L87 Difference]: Start difference. First operand 20468 states and 21874 transitions. Second operand has 4 states, 4 states have (on average 117.5) internal successors, (470), 4 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:14:33,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:14:33,945 INFO L93 Difference]: Finished difference Result 48435 states and 51642 transitions. [2024-11-27 20:14:33,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:14:33,946 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 117.5) internal successors, (470), 4 states have internal predecessors, (470), 0 states have call successors, (0), 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 706 [2024-11-27 20:14:33,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:14:34,053 INFO L225 Difference]: With dead ends: 48435 [2024-11-27 20:14:34,053 INFO L226 Difference]: Without dead ends: 27670 [2024-11-27 20:14:34,058 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 [2024-11-27 20:14:34,058 INFO L435 NwaCegarLoop]: 112 mSDtfsCounter, 536 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 1610 mSolverCounterSat, 269 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 536 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 1879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 269 IncrementalHoareTripleChecker+Valid, 1610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-27 20:14:34,059 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [536 Valid, 164 Invalid, 1879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [269 Valid, 1610 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-27 20:14:34,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27670 states. [2024-11-27 20:14:34,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27670 to 20468. [2024-11-27 20:14:34,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20468 states, 20467 states have (on average 1.0687448087164704) internal successors, (21874), 20467 states have internal predecessors, (21874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:14:34,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20468 states to 20468 states and 21874 transitions. [2024-11-27 20:14:34,274 INFO L78 Accepts]: Start accepts. Automaton has 20468 states and 21874 transitions. Word has length 706 [2024-11-27 20:14:34,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:14:34,275 INFO L471 AbstractCegarLoop]: Abstraction has 20468 states and 21874 transitions. [2024-11-27 20:14:34,275 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 117.5) internal successors, (470), 4 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:14:34,275 INFO L276 IsEmpty]: Start isEmpty. Operand 20468 states and 21874 transitions. [2024-11-27 20:14:34,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 716 [2024-11-27 20:14:34,281 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:14:34,282 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-27 20:14:34,282 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-27 20:14:34,282 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:14:34,282 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:14:34,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1608735074, now seen corresponding path program 1 times [2024-11-27 20:14:34,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:14:34,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705825306] [2024-11-27 20:14:34,283 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:14:34,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:14:34,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:14:34,682 INFO L134 CoverageAnalysis]: Checked inductivity of 929 backedges. 543 proven. 0 refuted. 0 times theorem prover too weak. 386 trivial. 0 not checked. [2024-11-27 20:14:34,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:14:34,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705825306] [2024-11-27 20:14:34,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705825306] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:14:34,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:14:34,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:14:34,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596673871] [2024-11-27 20:14:34,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:14:34,684 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:14:34,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:14:34,685 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:14:34,685 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:14:34,685 INFO L87 Difference]: Start difference. First operand 20468 states and 21874 transitions. Second operand has 3 states, 3 states have (on average 146.0) internal successors, (438), 3 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:14:35,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:14:35,988 INFO L93 Difference]: Finished difference Result 40931 states and 43747 transitions. [2024-11-27 20:14:35,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:14:35,989 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 146.0) internal successors, (438), 3 states have internal predecessors, (438), 0 states have call successors, (0), 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 715 [2024-11-27 20:14:35,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:14:36,005 INFO L225 Difference]: With dead ends: 40931 [2024-11-27 20:14:36,005 INFO L226 Difference]: Without dead ends: 20764 [2024-11-27 20:14:36,013 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 [2024-11-27 20:14:36,014 INFO L435 NwaCegarLoop]: 65 mSDtfsCounter, 464 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 761 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 464 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 831 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-27 20:14:36,014 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [464 Valid, 70 Invalid, 831 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 761 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-27 20:14:36,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20764 states. [2024-11-27 20:14:36,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20764 to 20465. [2024-11-27 20:14:36,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20465 states, 20464 states have (on average 1.0686082877247849) internal successors, (21868), 20464 states have internal predecessors, (21868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:14:36,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20465 states to 20465 states and 21868 transitions. [2024-11-27 20:14:36,327 INFO L78 Accepts]: Start accepts. Automaton has 20465 states and 21868 transitions. Word has length 715 [2024-11-27 20:14:36,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:14:36,327 INFO L471 AbstractCegarLoop]: Abstraction has 20465 states and 21868 transitions. [2024-11-27 20:14:36,327 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 146.0) internal successors, (438), 3 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:14:36,328 INFO L276 IsEmpty]: Start isEmpty. Operand 20465 states and 21868 transitions. [2024-11-27 20:14:36,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 727 [2024-11-27 20:14:36,335 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:14:36,335 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2024-11-27 20:14:36,335 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-27 20:14:36,335 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:14:36,336 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:14:36,336 INFO L85 PathProgramCache]: Analyzing trace with hash -2023005704, now seen corresponding path program 1 times [2024-11-27 20:14:36,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:14:36,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845738875] [2024-11-27 20:14:36,337 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:14:36,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:14:36,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:14:36,971 INFO L134 CoverageAnalysis]: Checked inductivity of 963 backedges. 805 proven. 0 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2024-11-27 20:14:36,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:14:36,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845738875] [2024-11-27 20:14:36,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845738875] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:14:36,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:14:36,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:14:36,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395027052] [2024-11-27 20:14:36,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:14:36,973 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:14:36,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:14:36,974 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:14:36,975 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:14:36,975 INFO L87 Difference]: Start difference. First operand 20465 states and 21868 transitions. Second operand has 3 states, 3 states have (on average 190.0) internal successors, (570), 3 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:14:38,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:14:38,580 INFO L93 Difference]: Finished difference Result 45411 states and 48677 transitions. [2024-11-27 20:14:38,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:14:38,581 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 190.0) internal successors, (570), 3 states have internal predecessors, (570), 0 states have call successors, (0), 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 726 [2024-11-27 20:14:38,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:14:38,600 INFO L225 Difference]: With dead ends: 45411 [2024-11-27 20:14:38,600 INFO L226 Difference]: Without dead ends: 25247 [2024-11-27 20:14:38,610 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 [2024-11-27 20:14:38,611 INFO L435 NwaCegarLoop]: 127 mSDtfsCounter, 213 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 871 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 998 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 871 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-27 20:14:38,611 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 156 Invalid, 998 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 871 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-27 20:14:38,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25247 states. [2024-11-27 20:14:38,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25247 to 24350. [2024-11-27 20:14:38,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24350 states, 24349 states have (on average 1.0659986036387532) internal successors, (25956), 24349 states have internal predecessors, (25956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:14:38,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24350 states to 24350 states and 25956 transitions. [2024-11-27 20:14:38,853 INFO L78 Accepts]: Start accepts. Automaton has 24350 states and 25956 transitions. Word has length 726 [2024-11-27 20:14:38,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:14:38,853 INFO L471 AbstractCegarLoop]: Abstraction has 24350 states and 25956 transitions. [2024-11-27 20:14:38,854 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 190.0) internal successors, (570), 3 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:14:38,854 INFO L276 IsEmpty]: Start isEmpty. Operand 24350 states and 25956 transitions. [2024-11-27 20:14:38,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 766 [2024-11-27 20:14:38,866 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:14:38,867 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-27 20:14:38,867 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-27 20:14:38,867 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:14:38,868 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:14:38,868 INFO L85 PathProgramCache]: Analyzing trace with hash 959696480, now seen corresponding path program 1 times [2024-11-27 20:14:38,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:14:38,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218089076] [2024-11-27 20:14:38,868 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:14:38,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:14:39,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:14:39,616 INFO L134 CoverageAnalysis]: Checked inductivity of 755 backedges. 155 proven. 0 refuted. 0 times theorem prover too weak. 600 trivial. 0 not checked. [2024-11-27 20:14:39,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:14:39,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218089076] [2024-11-27 20:14:39,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218089076] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:14:39,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:14:39,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:14:39,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479986028] [2024-11-27 20:14:39,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:14:39,618 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:14:39,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:14:39,619 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:14:39,619 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:14:39,619 INFO L87 Difference]: Start difference. First operand 24350 states and 25956 transitions. Second operand has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:14:41,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:14:41,318 INFO L93 Difference]: Finished difference Result 55010 states and 58611 transitions. [2024-11-27 20:14:41,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:14:41,318 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 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 765 [2024-11-27 20:14:41,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:14:41,341 INFO L225 Difference]: With dead ends: 55010 [2024-11-27 20:14:41,341 INFO L226 Difference]: Without dead ends: 28868 [2024-11-27 20:14:41,353 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 [2024-11-27 20:14:41,354 INFO L435 NwaCegarLoop]: 423 mSDtfsCounter, 341 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 814 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 996 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 814 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-27 20:14:41,354 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [341 Valid, 448 Invalid, 996 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 814 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-27 20:14:41,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28868 states. [2024-11-27 20:14:41,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28868 to 23154. [2024-11-27 20:14:41,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23154 states, 23153 states have (on average 1.065477475921047) internal successors, (24669), 23153 states have internal predecessors, (24669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:14:41,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23154 states to 23154 states and 24669 transitions. [2024-11-27 20:14:41,592 INFO L78 Accepts]: Start accepts. Automaton has 23154 states and 24669 transitions. Word has length 765 [2024-11-27 20:14:41,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:14:41,593 INFO L471 AbstractCegarLoop]: Abstraction has 23154 states and 24669 transitions. [2024-11-27 20:14:41,594 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:14:41,594 INFO L276 IsEmpty]: Start isEmpty. Operand 23154 states and 24669 transitions. [2024-11-27 20:14:41,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 839 [2024-11-27 20:14:41,607 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:14:41,607 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, 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-27 20:14:41,607 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-27 20:14:41,607 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:14:41,608 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:14:41,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1626760221, now seen corresponding path program 1 times [2024-11-27 20:14:41,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:14:41,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596301401] [2024-11-27 20:14:41,608 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:14:41,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:14:41,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:14:42,131 INFO L134 CoverageAnalysis]: Checked inductivity of 1362 backedges. 976 proven. 0 refuted. 0 times theorem prover too weak. 386 trivial. 0 not checked. [2024-11-27 20:14:42,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:14:42,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596301401] [2024-11-27 20:14:42,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596301401] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:14:42,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:14:42,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 20:14:42,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015764691] [2024-11-27 20:14:42,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:14:42,133 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:14:42,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:14:42,133 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:14:42,133 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:14:42,133 INFO L87 Difference]: Start difference. First operand 23154 states and 24669 transitions. Second operand has 4 states, 4 states have (on average 140.25) internal successors, (561), 4 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:14:44,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:14:44,524 INFO L93 Difference]: Finished difference Result 47494 states and 50514 transitions. [2024-11-27 20:14:44,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:14:44,525 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 140.25) internal successors, (561), 4 states have internal predecessors, (561), 0 states have call successors, (0), 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 838 [2024-11-27 20:14:44,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:14:44,551 INFO L225 Difference]: With dead ends: 47494 [2024-11-27 20:14:44,552 INFO L226 Difference]: Without dead ends: 22548 [2024-11-27 20:14:44,566 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 [2024-11-27 20:14:44,568 INFO L435 NwaCegarLoop]: 428 mSDtfsCounter, 537 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 1443 mSolverCounterSat, 364 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 537 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 1807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 364 IncrementalHoareTripleChecker+Valid, 1443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-27 20:14:44,568 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [537 Valid, 460 Invalid, 1807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [364 Valid, 1443 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-27 20:14:44,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22548 states. [2024-11-27 20:14:44,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22548 to 18334. [2024-11-27 20:14:44,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18334 states, 18333 states have (on average 1.0495827196858125) internal successors, (19242), 18333 states have internal predecessors, (19242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:14:44,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18334 states to 18334 states and 19242 transitions. [2024-11-27 20:14:44,756 INFO L78 Accepts]: Start accepts. Automaton has 18334 states and 19242 transitions. Word has length 838 [2024-11-27 20:14:44,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:14:44,756 INFO L471 AbstractCegarLoop]: Abstraction has 18334 states and 19242 transitions. [2024-11-27 20:14:44,756 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 140.25) internal successors, (561), 4 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:14:44,756 INFO L276 IsEmpty]: Start isEmpty. Operand 18334 states and 19242 transitions. [2024-11-27 20:14:44,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 850 [2024-11-27 20:14:44,766 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:14:44,766 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, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:14:44,767 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-27 20:14:44,767 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:14:44,767 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:14:44,767 INFO L85 PathProgramCache]: Analyzing trace with hash -880788312, now seen corresponding path program 1 times [2024-11-27 20:14:44,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:14:44,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053251341] [2024-11-27 20:14:44,768 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:14:44,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:14:44,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:14:45,098 INFO L134 CoverageAnalysis]: Checked inductivity of 1342 backedges. 753 proven. 0 refuted. 0 times theorem prover too weak. 589 trivial. 0 not checked. [2024-11-27 20:14:45,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:14:45,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053251341] [2024-11-27 20:14:45,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053251341] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:14:45,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:14:45,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:14:45,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425625787] [2024-11-27 20:14:45,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:14:45,100 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:14:45,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:14:45,101 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:14:45,101 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:14:45,101 INFO L87 Difference]: Start difference. First operand 18334 states and 19242 transitions. Second operand has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:14:46,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:14:46,473 INFO L93 Difference]: Finished difference Result 39055 states and 40952 transitions. [2024-11-27 20:14:46,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:14:46,474 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 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 849 [2024-11-27 20:14:46,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:14:46,489 INFO L225 Difference]: With dead ends: 39055 [2024-11-27 20:14:46,489 INFO L226 Difference]: Without dead ends: 21022 [2024-11-27 20:14:46,496 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 [2024-11-27 20:14:46,497 INFO L435 NwaCegarLoop]: 458 mSDtfsCounter, 337 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 731 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 731 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-27 20:14:46,497 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [337 Valid, 485 Invalid, 863 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 731 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-27 20:14:46,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21022 states. [2024-11-27 20:14:46,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21022 to 17429. [2024-11-27 20:14:46,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17429 states, 17428 states have (on average 1.0496901537755337) internal successors, (18294), 17428 states have internal predecessors, (18294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:14:46,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17429 states to 17429 states and 18294 transitions. [2024-11-27 20:14:46,674 INFO L78 Accepts]: Start accepts. Automaton has 17429 states and 18294 transitions. Word has length 849 [2024-11-27 20:14:46,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:14:46,674 INFO L471 AbstractCegarLoop]: Abstraction has 17429 states and 18294 transitions. [2024-11-27 20:14:46,674 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:14:46,674 INFO L276 IsEmpty]: Start isEmpty. Operand 17429 states and 18294 transitions. [2024-11-27 20:14:46,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 885 [2024-11-27 20:14:46,682 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:14:46,683 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, 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:14:46,683 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-27 20:14:46,683 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:14:46,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:14:46,684 INFO L85 PathProgramCache]: Analyzing trace with hash 378350950, now seen corresponding path program 1 times [2024-11-27 20:14:46,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:14:46,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005563669] [2024-11-27 20:14:46,684 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:14:46,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:14:46,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:14:48,264 INFO L134 CoverageAnalysis]: Checked inductivity of 1481 backedges. 842 proven. 188 refuted. 0 times theorem prover too weak. 451 trivial. 0 not checked. [2024-11-27 20:14:48,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:14:48,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005563669] [2024-11-27 20:14:48,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005563669] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:14:48,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [354587685] [2024-11-27 20:14:48,264 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:14:48,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:14:48,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ae2ebd-7914-4466-9c1f-f8a32c7012b6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:14:48,266 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ae2ebd-7914-4466-9c1f-f8a32c7012b6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:14:48,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ae2ebd-7914-4466-9c1f-f8a32c7012b6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-27 20:14:48,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:14:48,587 INFO L256 TraceCheckSpWp]: Trace formula consists of 1037 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-27 20:14:48,596 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:14:50,002 INFO L134 CoverageAnalysis]: Checked inductivity of 1481 backedges. 1239 proven. 2 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2024-11-27 20:14:50,002 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:14:51,453 INFO L134 CoverageAnalysis]: Checked inductivity of 1481 backedges. 1090 proven. 0 refuted. 0 times theorem prover too weak. 391 trivial. 0 not checked. [2024-11-27 20:14:51,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [354587685] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-27 20:14:51,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-27 20:14:51,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 5] total 9 [2024-11-27 20:14:51,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995194174] [2024-11-27 20:14:51,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:14:51,456 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:14:51,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:14:51,457 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:14:51,457 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-27 20:14:51,457 INFO L87 Difference]: Start difference. First operand 17429 states and 18294 transitions. Second operand has 4 states, 4 states have (on average 142.75) internal successors, (571), 4 states have internal predecessors, (571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:14:53,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:14:53,447 INFO L93 Difference]: Finished difference Result 35801 states and 37577 transitions. [2024-11-27 20:14:53,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:14:53,448 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 142.75) internal successors, (571), 4 states have internal predecessors, (571), 0 states have call successors, (0), 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 884 [2024-11-27 20:14:53,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:14:53,462 INFO L225 Difference]: With dead ends: 35801 [2024-11-27 20:14:53,462 INFO L226 Difference]: Without dead ends: 18673 [2024-11-27 20:14:53,471 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1772 GetRequests, 1764 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-27 20:14:53,472 INFO L435 NwaCegarLoop]: 483 mSDtfsCounter, 391 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 1266 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 391 SdHoareTripleChecker+Valid, 552 SdHoareTripleChecker+Invalid, 1401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 1266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-27 20:14:53,472 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [391 Valid, 552 Invalid, 1401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 1266 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-27 20:14:53,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18673 states. [2024-11-27 20:14:53,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18673 to 18326. [2024-11-27 20:14:53,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18326 states, 18325 states have (on average 1.0486221009549794) internal successors, (19216), 18325 states have internal predecessors, (19216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:14:53,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18326 states to 18326 states and 19216 transitions. [2024-11-27 20:14:53,704 INFO L78 Accepts]: Start accepts. Automaton has 18326 states and 19216 transitions. Word has length 884 [2024-11-27 20:14:53,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:14:53,704 INFO L471 AbstractCegarLoop]: Abstraction has 18326 states and 19216 transitions. [2024-11-27 20:14:53,705 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 142.75) internal successors, (571), 4 states have internal predecessors, (571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:14:53,705 INFO L276 IsEmpty]: Start isEmpty. Operand 18326 states and 19216 transitions. [2024-11-27 20:14:53,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 891 [2024-11-27 20:14:53,715 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:14:53,715 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, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:14:53,723 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ae2ebd-7914-4466-9c1f-f8a32c7012b6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-27 20:14:53,915 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ae2ebd-7914-4466-9c1f-f8a32c7012b6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-27 20:14:53,916 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:14:53,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:14:53,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1275771118, now seen corresponding path program 1 times [2024-11-27 20:14:53,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:14:53,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904233950] [2024-11-27 20:14:53,917 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:14:53,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:14:54,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:14:56,085 INFO L134 CoverageAnalysis]: Checked inductivity of 1497 backedges. 850 proven. 188 refuted. 0 times theorem prover too weak. 459 trivial. 0 not checked. [2024-11-27 20:14:56,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:14:56,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904233950] [2024-11-27 20:14:56,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904233950] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:14:56,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [828916858] [2024-11-27 20:14:56,086 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:14:56,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:14:56,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ae2ebd-7914-4466-9c1f-f8a32c7012b6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:14:56,089 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ae2ebd-7914-4466-9c1f-f8a32c7012b6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:14:56,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ae2ebd-7914-4466-9c1f-f8a32c7012b6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-27 20:14:56,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:14:56,466 INFO L256 TraceCheckSpWp]: Trace formula consists of 1044 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-27 20:14:56,475 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:14:57,332 INFO L134 CoverageAnalysis]: Checked inductivity of 1497 backedges. 767 proven. 0 refuted. 0 times theorem prover too weak. 730 trivial. 0 not checked. [2024-11-27 20:14:57,333 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:14:57,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [828916858] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:14:57,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:14:57,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2024-11-27 20:14:57,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468651917] [2024-11-27 20:14:57,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:14:57,335 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:14:57,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:14:57,336 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:14:57,336 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:14:57,336 INFO L87 Difference]: Start difference. First operand 18326 states and 19216 transitions. Second operand has 4 states, 4 states have (on average 118.25) internal successors, (473), 4 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:15:00,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:15:00,180 INFO L93 Difference]: Finished difference Result 42950 states and 44904 transitions. [2024-11-27 20:15:00,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:15:00,181 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 118.25) internal successors, (473), 4 states have internal predecessors, (473), 0 states have call successors, (0), 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 890 [2024-11-27 20:15:00,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:15:00,201 INFO L225 Difference]: With dead ends: 42950 [2024-11-27 20:15:00,202 INFO L226 Difference]: Without dead ends: 24327 [2024-11-27 20:15:00,213 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 893 GetRequests, 888 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:15:00,213 INFO L435 NwaCegarLoop]: 85 mSDtfsCounter, 521 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 1550 mSolverCounterSat, 219 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 521 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 1769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 219 IncrementalHoareTripleChecker+Valid, 1550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-27 20:15:00,213 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [521 Valid, 143 Invalid, 1769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [219 Valid, 1550 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-27 20:15:00,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24327 states. [2024-11-27 20:15:00,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24327 to 21323. [2024-11-27 20:15:00,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21323 states, 21322 states have (on average 1.0453053184504268) internal successors, (22288), 21322 states have internal predecessors, (22288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:15:00,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21323 states to 21323 states and 22288 transitions. [2024-11-27 20:15:00,521 INFO L78 Accepts]: Start accepts. Automaton has 21323 states and 22288 transitions. Word has length 890 [2024-11-27 20:15:00,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:15:00,522 INFO L471 AbstractCegarLoop]: Abstraction has 21323 states and 22288 transitions. [2024-11-27 20:15:00,522 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 118.25) internal successors, (473), 4 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:15:00,523 INFO L276 IsEmpty]: Start isEmpty. Operand 21323 states and 22288 transitions. [2024-11-27 20:15:00,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 920 [2024-11-27 20:15:00,535 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:15:00,536 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, 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, 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, 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, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:15:00,544 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ae2ebd-7914-4466-9c1f-f8a32c7012b6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-27 20:15:00,736 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ae2ebd-7914-4466-9c1f-f8a32c7012b6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:15:00,737 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:15:00,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:15:00,737 INFO L85 PathProgramCache]: Analyzing trace with hash -651586055, now seen corresponding path program 1 times [2024-11-27 20:15:00,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:15:00,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825303307] [2024-11-27 20:15:00,737 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:15:00,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:15:00,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:15:02,259 INFO L134 CoverageAnalysis]: Checked inductivity of 1589 backedges. 912 proven. 188 refuted. 0 times theorem prover too weak. 489 trivial. 0 not checked. [2024-11-27 20:15:02,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:15:02,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825303307] [2024-11-27 20:15:02,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825303307] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:15:02,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [203458032] [2024-11-27 20:15:02,259 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:15:02,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:15:02,259 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ae2ebd-7914-4466-9c1f-f8a32c7012b6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:15:02,261 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ae2ebd-7914-4466-9c1f-f8a32c7012b6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:15:02,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ae2ebd-7914-4466-9c1f-f8a32c7012b6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-27 20:15:02,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:15:02,713 INFO L256 TraceCheckSpWp]: Trace formula consists of 1074 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-27 20:15:02,723 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:15:03,592 INFO L134 CoverageAnalysis]: Checked inductivity of 1589 backedges. 782 proven. 0 refuted. 0 times theorem prover too weak. 807 trivial. 0 not checked. [2024-11-27 20:15:03,592 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:15:03,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [203458032] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:15:03,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:15:03,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2024-11-27 20:15:03,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207469971] [2024-11-27 20:15:03,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:15:03,594 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:15:03,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:15:03,595 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:15:03,595 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:15:03,595 INFO L87 Difference]: Start difference. First operand 21323 states and 22288 transitions. Second operand has 4 states, 4 states have (on average 117.75) internal successors, (471), 4 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:15:06,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:15:06,147 INFO L93 Difference]: Finished difference Result 47149 states and 49199 transitions. [2024-11-27 20:15:06,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:15:06,148 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 117.75) internal successors, (471), 4 states have internal predecessors, (471), 0 states have call successors, (0), 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 919 [2024-11-27 20:15:06,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:15:06,174 INFO L225 Difference]: With dead ends: 47149 [2024-11-27 20:15:06,174 INFO L226 Difference]: Without dead ends: 25529 [2024-11-27 20:15:06,184 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 922 GetRequests, 917 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:15:06,185 INFO L435 NwaCegarLoop]: 89 mSDtfsCounter, 521 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 1548 mSolverCounterSat, 215 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 521 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 1763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 215 IncrementalHoareTripleChecker+Valid, 1548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-27 20:15:06,186 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [521 Valid, 147 Invalid, 1763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [215 Valid, 1548 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-27 20:15:06,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25529 states. [2024-11-27 20:15:06,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25529 to 20725. [2024-11-27 20:15:06,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20725 states, 20724 states have (on average 1.0460335842501447) internal successors, (21678), 20724 states have internal predecessors, (21678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:15:06,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20725 states to 20725 states and 21678 transitions. [2024-11-27 20:15:06,517 INFO L78 Accepts]: Start accepts. Automaton has 20725 states and 21678 transitions. Word has length 919 [2024-11-27 20:15:06,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:15:06,518 INFO L471 AbstractCegarLoop]: Abstraction has 20725 states and 21678 transitions. [2024-11-27 20:15:06,518 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 117.75) internal successors, (471), 4 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:15:06,518 INFO L276 IsEmpty]: Start isEmpty. Operand 20725 states and 21678 transitions. [2024-11-27 20:15:06,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 964 [2024-11-27 20:15:06,527 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:15:06,527 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, 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, 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, 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, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:15:06,535 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ae2ebd-7914-4466-9c1f-f8a32c7012b6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-27 20:15:06,727 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ae2ebd-7914-4466-9c1f-f8a32c7012b6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:15:06,728 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:15:06,729 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:15:06,729 INFO L85 PathProgramCache]: Analyzing trace with hash -37011290, now seen corresponding path program 1 times [2024-11-27 20:15:06,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:15:06,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251307970] [2024-11-27 20:15:06,730 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:15:06,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:15:06,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:15:07,314 INFO L134 CoverageAnalysis]: Checked inductivity of 1559 backedges. 905 proven. 0 refuted. 0 times theorem prover too weak. 654 trivial. 0 not checked. [2024-11-27 20:15:07,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:15:07,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251307970] [2024-11-27 20:15:07,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251307970] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:15:07,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:15:07,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:15:07,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197142080] [2024-11-27 20:15:07,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:15:07,316 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:15:07,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:15:07,316 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:15:07,317 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:15:07,317 INFO L87 Difference]: Start difference. First operand 20725 states and 21678 transitions. Second operand has 3 states, 3 states have (on average 157.0) internal successors, (471), 3 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:15:08,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:15:08,717 INFO L93 Difference]: Finished difference Result 41746 states and 43667 transitions. [2024-11-27 20:15:08,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:15:08,717 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 157.0) internal successors, (471), 3 states have internal predecessors, (471), 0 states have call successors, (0), 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 963 [2024-11-27 20:15:08,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:15:08,735 INFO L225 Difference]: With dead ends: 41746 [2024-11-27 20:15:08,735 INFO L226 Difference]: Without dead ends: 21322 [2024-11-27 20:15:08,743 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 [2024-11-27 20:15:08,743 INFO L435 NwaCegarLoop]: 489 mSDtfsCounter, 312 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 772 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 529 SdHoareTripleChecker+Invalid, 791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-27 20:15:08,743 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [312 Valid, 529 Invalid, 791 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 772 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-27 20:15:08,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21322 states. [2024-11-27 20:15:09,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21322 to 20724. [2024-11-27 20:15:09,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20724 states, 20723 states have (on average 1.045987550065145) internal successors, (21676), 20723 states have internal predecessors, (21676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:15:09,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20724 states to 20724 states and 21676 transitions. [2024-11-27 20:15:09,035 INFO L78 Accepts]: Start accepts. Automaton has 20724 states and 21676 transitions. Word has length 963 [2024-11-27 20:15:09,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:15:09,036 INFO L471 AbstractCegarLoop]: Abstraction has 20724 states and 21676 transitions. [2024-11-27 20:15:09,036 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 157.0) internal successors, (471), 3 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:15:09,036 INFO L276 IsEmpty]: Start isEmpty. Operand 20724 states and 21676 transitions. [2024-11-27 20:15:09,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 985 [2024-11-27 20:15:09,053 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:15:09,054 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, 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, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:15:09,054 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-27 20:15:09,054 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:15:09,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:15:09,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1214804894, now seen corresponding path program 1 times [2024-11-27 20:15:09,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:15:09,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427062217] [2024-11-27 20:15:09,056 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:15:09,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:15:09,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:15:09,745 INFO L134 CoverageAnalysis]: Checked inductivity of 1575 backedges. 1026 proven. 0 refuted. 0 times theorem prover too weak. 549 trivial. 0 not checked. [2024-11-27 20:15:09,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:15:09,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427062217] [2024-11-27 20:15:09,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427062217] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:15:09,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:15:09,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:15:09,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007391121] [2024-11-27 20:15:09,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:15:09,746 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:15:09,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:15:09,747 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:15:09,747 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:15:09,748 INFO L87 Difference]: Start difference. First operand 20724 states and 21676 transitions. Second operand has 3 states, 3 states have (on average 175.0) internal successors, (525), 3 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:15:11,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:15:11,241 INFO L93 Difference]: Finished difference Result 41146 states and 43048 transitions. [2024-11-27 20:15:11,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:15:11,242 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 175.0) internal successors, (525), 3 states have internal predecessors, (525), 0 states have call successors, (0), 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 984 [2024-11-27 20:15:11,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:15:11,258 INFO L225 Difference]: With dead ends: 41146 [2024-11-27 20:15:11,258 INFO L226 Difference]: Without dead ends: 20723 [2024-11-27 20:15:11,267 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 [2024-11-27 20:15:11,268 INFO L435 NwaCegarLoop]: 481 mSDtfsCounter, 128 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 778 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 514 SdHoareTripleChecker+Invalid, 843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-27 20:15:11,268 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 514 Invalid, 843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 778 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-27 20:15:11,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20723 states. [2024-11-27 20:15:11,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20723 to 20723. [2024-11-27 20:15:11,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20723 states, 20722 states have (on average 1.0350834861499856) internal successors, (21449), 20722 states have internal predecessors, (21449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:15:11,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20723 states to 20723 states and 21449 transitions. [2024-11-27 20:15:11,473 INFO L78 Accepts]: Start accepts. Automaton has 20723 states and 21449 transitions. Word has length 984 [2024-11-27 20:15:11,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:15:11,474 INFO L471 AbstractCegarLoop]: Abstraction has 20723 states and 21449 transitions. [2024-11-27 20:15:11,474 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 175.0) internal successors, (525), 3 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:15:11,474 INFO L276 IsEmpty]: Start isEmpty. Operand 20723 states and 21449 transitions. [2024-11-27 20:15:11,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1003 [2024-11-27 20:15:11,490 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:15:11,491 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, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:15:11,491 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-27 20:15:11,491 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:15:11,492 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:15:11,492 INFO L85 PathProgramCache]: Analyzing trace with hash 1224360302, now seen corresponding path program 1 times [2024-11-27 20:15:11,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:15:11,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307630023] [2024-11-27 20:15:11,492 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:15:11,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:15:11,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:15:13,237 INFO L134 CoverageAnalysis]: Checked inductivity of 1647 backedges. 1062 proven. 105 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-27 20:15:13,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:15:13,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307630023] [2024-11-27 20:15:13,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307630023] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:15:13,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [619358289] [2024-11-27 20:15:13,238 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:15:13,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:15:13,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ae2ebd-7914-4466-9c1f-f8a32c7012b6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:15:13,241 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ae2ebd-7914-4466-9c1f-f8a32c7012b6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:15:13,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ae2ebd-7914-4466-9c1f-f8a32c7012b6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-27 20:15:13,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:15:13,647 INFO L256 TraceCheckSpWp]: Trace formula consists of 1158 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-27 20:15:13,655 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:15:13,932 INFO L134 CoverageAnalysis]: Checked inductivity of 1647 backedges. 678 proven. 0 refuted. 0 times theorem prover too weak. 969 trivial. 0 not checked. [2024-11-27 20:15:13,932 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:15:13,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [619358289] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:15:13,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:15:13,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 6 [2024-11-27 20:15:13,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586691269] [2024-11-27 20:15:13,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:15:13,933 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:15:13,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:15:13,934 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:15:13,934 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:15:13,934 INFO L87 Difference]: Start difference. First operand 20723 states and 21449 transitions. Second operand has 4 states, 4 states have (on average 109.5) internal successors, (438), 4 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:15:16,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:15:16,314 INFO L93 Difference]: Finished difference Result 48942 states and 50562 transitions. [2024-11-27 20:15:16,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:15:16,315 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 109.5) internal successors, (438), 4 states have internal predecessors, (438), 0 states have call successors, (0), 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 1002 [2024-11-27 20:15:16,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:15:16,336 INFO L225 Difference]: With dead ends: 48942 [2024-11-27 20:15:16,336 INFO L226 Difference]: Without dead ends: 28221 [2024-11-27 20:15:16,346 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1006 GetRequests, 1002 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:15:16,346 INFO L435 NwaCegarLoop]: 81 mSDtfsCounter, 559 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 1557 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 559 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 1752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 1557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-27 20:15:16,346 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [559 Valid, 137 Invalid, 1752 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 1557 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-27 20:15:16,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28221 states. [2024-11-27 20:15:16,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28221 to 22519. [2024-11-27 20:15:16,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22519 states, 22518 states have (on average 1.034061639577227) internal successors, (23285), 22518 states have internal predecessors, (23285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:15:16,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22519 states to 22519 states and 23285 transitions. [2024-11-27 20:15:16,598 INFO L78 Accepts]: Start accepts. Automaton has 22519 states and 23285 transitions. Word has length 1002 [2024-11-27 20:15:16,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:15:16,599 INFO L471 AbstractCegarLoop]: Abstraction has 22519 states and 23285 transitions. [2024-11-27 20:15:16,599 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 109.5) internal successors, (438), 4 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:15:16,599 INFO L276 IsEmpty]: Start isEmpty. Operand 22519 states and 23285 transitions. [2024-11-27 20:15:16,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1054 [2024-11-27 20:15:16,610 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:15:16,610 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, 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, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:15:16,624 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ae2ebd-7914-4466-9c1f-f8a32c7012b6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-27 20:15:16,811 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ae2ebd-7914-4466-9c1f-f8a32c7012b6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-27 20:15:16,811 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:15:16,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:15:16,812 INFO L85 PathProgramCache]: Analyzing trace with hash 502836976, now seen corresponding path program 1 times [2024-11-27 20:15:16,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:15:16,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028660575] [2024-11-27 20:15:16,812 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:15:16,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:15:16,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:15:17,304 INFO L134 CoverageAnalysis]: Checked inductivity of 1824 backedges. 1338 proven. 0 refuted. 0 times theorem prover too weak. 486 trivial. 0 not checked. [2024-11-27 20:15:17,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:15:17,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028660575] [2024-11-27 20:15:17,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028660575] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:15:17,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:15:17,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:15:17,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35155386] [2024-11-27 20:15:17,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:15:17,306 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:15:17,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:15:17,307 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:15:17,307 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:15:17,307 INFO L87 Difference]: Start difference. First operand 22519 states and 23285 transitions. Second operand has 3 states, 3 states have (on average 229.66666666666666) internal successors, (689), 3 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:15:18,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:15:18,923 INFO L93 Difference]: Finished difference Result 51629 states and 53354 transitions. [2024-11-27 20:15:18,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:15:18,924 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 229.66666666666666) internal successors, (689), 3 states have internal predecessors, (689), 0 states have call successors, (0), 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 1053 [2024-11-27 20:15:18,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:15:18,946 INFO L225 Difference]: With dead ends: 51629 [2024-11-27 20:15:18,946 INFO L226 Difference]: Without dead ends: 29411 [2024-11-27 20:15:18,958 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 [2024-11-27 20:15:18,958 INFO L435 NwaCegarLoop]: 501 mSDtfsCounter, 52 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 860 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 532 SdHoareTripleChecker+Invalid, 930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-27 20:15:18,958 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 532 Invalid, 930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 860 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-27 20:15:18,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29411 states. [2024-11-27 20:15:19,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29411 to 27006. [2024-11-27 20:15:19,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27006 states, 27005 states have (on average 1.031142381040548) internal successors, (27846), 27005 states have internal predecessors, (27846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:15:19,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27006 states to 27006 states and 27846 transitions. [2024-11-27 20:15:19,362 INFO L78 Accepts]: Start accepts. Automaton has 27006 states and 27846 transitions. Word has length 1053 [2024-11-27 20:15:19,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:15:19,362 INFO L471 AbstractCegarLoop]: Abstraction has 27006 states and 27846 transitions. [2024-11-27 20:15:19,362 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 229.66666666666666) internal successors, (689), 3 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:15:19,363 INFO L276 IsEmpty]: Start isEmpty. Operand 27006 states and 27846 transitions. [2024-11-27 20:15:19,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1127 [2024-11-27 20:15:19,377 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:15:19,377 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, 7, 7, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:15:19,377 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-27 20:15:19,377 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:15:19,378 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:15:19,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1682963098, now seen corresponding path program 1 times [2024-11-27 20:15:19,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:15:19,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583018497] [2024-11-27 20:15:19,378 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:15:19,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:15:19,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:15:20,371 INFO L134 CoverageAnalysis]: Checked inductivity of 2243 backedges. 1222 proven. 0 refuted. 0 times theorem prover too weak. 1021 trivial. 0 not checked. [2024-11-27 20:15:20,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:15:20,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583018497] [2024-11-27 20:15:20,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583018497] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:15:20,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:15:20,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:15:20,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422765899] [2024-11-27 20:15:20,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:15:20,373 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:15:20,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:15:20,374 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:15:20,374 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:15:20,374 INFO L87 Difference]: Start difference. First operand 27006 states and 27846 transitions. Second operand has 3 states, 3 states have (on average 170.33333333333334) internal successors, (511), 3 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:15:22,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:15:22,048 INFO L93 Difference]: Finished difference Result 62409 states and 64329 transitions. [2024-11-27 20:15:22,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:15:22,049 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 170.33333333333334) internal successors, (511), 3 states have internal predecessors, (511), 0 states have call successors, (0), 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 1126 [2024-11-27 20:15:22,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:15:22,075 INFO L225 Difference]: With dead ends: 62409 [2024-11-27 20:15:22,075 INFO L226 Difference]: Without dead ends: 35704 [2024-11-27 20:15:22,088 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 [2024-11-27 20:15:22,088 INFO L435 NwaCegarLoop]: 147 mSDtfsCounter, 259 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 842 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 975 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 842 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-27 20:15:22,088 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 171 Invalid, 975 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 842 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-27 20:15:22,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35704 states. [2024-11-27 20:15:22,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35704 to 31800. [2024-11-27 20:15:22,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31800 states, 31799 states have (on average 1.0298437057769112) internal successors, (32748), 31799 states have internal predecessors, (32748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:15:22,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31800 states to 31800 states and 32748 transitions. [2024-11-27 20:15:22,427 INFO L78 Accepts]: Start accepts. Automaton has 31800 states and 32748 transitions. Word has length 1126 [2024-11-27 20:15:22,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:15:22,427 INFO L471 AbstractCegarLoop]: Abstraction has 31800 states and 32748 transitions. [2024-11-27 20:15:22,428 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 170.33333333333334) internal successors, (511), 3 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:15:22,428 INFO L276 IsEmpty]: Start isEmpty. Operand 31800 states and 32748 transitions. [2024-11-27 20:15:22,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1142 [2024-11-27 20:15:22,442 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:15:22,442 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, 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, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:15:22,442 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-11-27 20:15:22,442 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:15:22,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:15:22,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1196675603, now seen corresponding path program 1 times [2024-11-27 20:15:22,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:15:22,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705316374] [2024-11-27 20:15:22,443 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:15:22,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:15:22,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:15:25,045 INFO L134 CoverageAnalysis]: Checked inductivity of 1957 backedges. 1165 proven. 269 refuted. 0 times theorem prover too weak. 523 trivial. 0 not checked. [2024-11-27 20:15:25,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:15:25,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705316374] [2024-11-27 20:15:25,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705316374] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:15:25,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1928682205] [2024-11-27 20:15:25,046 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:15:25,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:15:25,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ae2ebd-7914-4466-9c1f-f8a32c7012b6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:15:25,049 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ae2ebd-7914-4466-9c1f-f8a32c7012b6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:15:25,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ae2ebd-7914-4466-9c1f-f8a32c7012b6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-27 20:15:25,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:15:25,531 INFO L256 TraceCheckSpWp]: Trace formula consists of 1297 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-27 20:15:25,543 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:15:26,899 INFO L134 CoverageAnalysis]: Checked inductivity of 1957 backedges. 1062 proven. 0 refuted. 0 times theorem prover too weak. 895 trivial. 0 not checked. [2024-11-27 20:15:26,899 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:15:26,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1928682205] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:15:26,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:15:26,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2024-11-27 20:15:26,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625364694] [2024-11-27 20:15:26,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:15:26,901 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:15:26,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:15:26,902 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:15:26,902 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:15:26,902 INFO L87 Difference]: Start difference. First operand 31800 states and 32748 transitions. Second operand has 4 states, 4 states have (on average 153.5) internal successors, (614), 4 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:15:29,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:15:29,913 INFO L93 Difference]: Finished difference Result 70195 states and 72210 transitions. [2024-11-27 20:15:29,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:15:29,914 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 153.5) internal successors, (614), 4 states have internal predecessors, (614), 0 states have call successors, (0), 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 1141 [2024-11-27 20:15:29,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:15:29,943 INFO L225 Difference]: With dead ends: 70195 [2024-11-27 20:15:29,943 INFO L226 Difference]: Without dead ends: 38397 [2024-11-27 20:15:29,959 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1144 GetRequests, 1139 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:15:29,959 INFO L435 NwaCegarLoop]: 97 mSDtfsCounter, 380 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 1526 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 1697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 1526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-27 20:15:29,960 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [380 Valid, 147 Invalid, 1697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 1526 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-27 20:15:29,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38397 states. [2024-11-27 20:15:30,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38397 to 31800. [2024-11-27 20:15:30,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31800 states, 31799 states have (on average 1.0298437057769112) internal successors, (32748), 31799 states have internal predecessors, (32748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:15:30,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31800 states to 31800 states and 32748 transitions. [2024-11-27 20:15:30,322 INFO L78 Accepts]: Start accepts. Automaton has 31800 states and 32748 transitions. Word has length 1141 [2024-11-27 20:15:30,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:15:30,323 INFO L471 AbstractCegarLoop]: Abstraction has 31800 states and 32748 transitions. [2024-11-27 20:15:30,323 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 153.5) internal successors, (614), 4 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:15:30,323 INFO L276 IsEmpty]: Start isEmpty. Operand 31800 states and 32748 transitions. [2024-11-27 20:15:30,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1179 [2024-11-27 20:15:30,337 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:15:30,338 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, 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, 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:15:30,346 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ae2ebd-7914-4466-9c1f-f8a32c7012b6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-27 20:15:30,538 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ae2ebd-7914-4466-9c1f-f8a32c7012b6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:15:30,538 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:15:30,539 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:15:30,539 INFO L85 PathProgramCache]: Analyzing trace with hash 668651682, now seen corresponding path program 1 times [2024-11-27 20:15:30,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:15:30,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758727926] [2024-11-27 20:15:30,539 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:15:30,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:15:30,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:15:31,830 INFO L134 CoverageAnalysis]: Checked inductivity of 2068 backedges. 1396 proven. 192 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-27 20:15:31,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:15:31,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758727926] [2024-11-27 20:15:31,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758727926] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:15:31,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1072225579] [2024-11-27 20:15:31,831 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:15:31,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:15:31,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ae2ebd-7914-4466-9c1f-f8a32c7012b6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:15:31,833 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ae2ebd-7914-4466-9c1f-f8a32c7012b6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:15:31,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ae2ebd-7914-4466-9c1f-f8a32c7012b6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-27 20:15:32,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:15:32,247 INFO L256 TraceCheckSpWp]: Trace formula consists of 1334 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-27 20:15:32,257 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:15:33,233 INFO L134 CoverageAnalysis]: Checked inductivity of 2068 backedges. 1099 proven. 0 refuted. 0 times theorem prover too weak. 969 trivial. 0 not checked. [2024-11-27 20:15:33,233 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:15:33,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1072225579] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:15:33,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:15:33,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2024-11-27 20:15:33,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143312761] [2024-11-27 20:15:33,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:15:33,235 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:15:33,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:15:33,236 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:15:33,236 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:15:33,236 INFO L87 Difference]: Start difference. First operand 31800 states and 32748 transitions. Second operand has 4 states, 4 states have (on average 153.5) internal successors, (614), 4 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:15:35,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:15:35,028 INFO L93 Difference]: Finished difference Result 47098 states and 48298 transitions. [2024-11-27 20:15:35,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:15:35,028 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 153.5) internal successors, (614), 4 states have internal predecessors, (614), 0 states have call successors, (0), 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 1178 [2024-11-27 20:15:35,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:15:35,030 INFO L225 Difference]: With dead ends: 47098 [2024-11-27 20:15:35,030 INFO L226 Difference]: Without dead ends: 0 [2024-11-27 20:15:35,041 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1182 GetRequests, 1177 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:15:35,041 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 333 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 1052 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 1100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1052 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-27 20:15:35,041 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [333 Valid, 54 Invalid, 1100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1052 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-27 20:15:35,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-27 20:15:35,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-27 20:15:35,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:15:35,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-27 20:15:35,043 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1178 [2024-11-27 20:15:35,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:15:35,043 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-27 20:15:35,044 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 153.5) internal successors, (614), 4 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:15:35,044 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-27 20:15:35,044 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-27 20:15:35,048 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-27 20:15:35,061 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ae2ebd-7914-4466-9c1f-f8a32c7012b6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-27 20:15:35,249 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ae2ebd-7914-4466-9c1f-f8a32c7012b6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:15:35,252 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:15:35,254 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-27 20:17:57,546 WARN L286 SmtUtils]: Spent 2.37m on a formula simplification. DAG size of input: 646 DAG size of output: 639 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.or) [2024-11-27 20:18:03,000 WARN L286 SmtUtils]: Spent 5.45s on a formula simplification. DAG size of input: 639 DAG size of output: 114 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter) [2024-11-27 20:18:03,007 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-27 20:18:03,029 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-11-27 20:18:03,041 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.11 08:18:03 BoogieIcfgContainer [2024-11-27 20:18:03,041 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-27 20:18:03,042 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-27 20:18:03,042 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-27 20:18:03,042 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-27 20:18:03,047 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:13:24" (3/4) ... [2024-11-27 20:18:03,060 INFO L146 WitnessPrinter]: Generating witness for correct program [2024-11-27 20:18:03,107 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2024-11-27 20:18:03,110 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-27 20:18:03,112 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-27 20:18:03,114 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-27 20:18:03,414 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ae2ebd-7914-4466-9c1f-f8a32c7012b6/bin/uautomizer-verify-aQ6SnzHsRB/witness.graphml [2024-11-27 20:18:03,415 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ae2ebd-7914-4466-9c1f-f8a32c7012b6/bin/uautomizer-verify-aQ6SnzHsRB/witness.yml [2024-11-27 20:18:03,415 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-27 20:18:03,416 INFO L158 Benchmark]: Toolchain (without parser) took 285217.52ms. Allocated memory was 117.4MB in the beginning and 2.3GB in the end (delta: 2.2GB). Free memory was 79.7MB in the beginning and 1.2GB in the end (delta: -1.1GB). Peak memory consumption was 1.0GB. Max. memory is 16.1GB. [2024-11-27 20:18:03,416 INFO L158 Benchmark]: CDTParser took 0.40ms. Allocated memory is still 167.8MB. Free memory is still 105.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 20:18:03,417 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1254.67ms. Allocated memory is still 117.4MB. Free memory was 79.7MB in the beginning and 55.1MB in the end (delta: 24.6MB). Peak memory consumption was 68.4MB. Max. memory is 16.1GB. [2024-11-27 20:18:03,419 INFO L158 Benchmark]: Boogie Procedure Inliner took 312.11ms. Allocated memory is still 117.4MB. Free memory was 55.1MB in the beginning and 55.1MB in the end (delta: -41.0kB). Peak memory consumption was 29.9MB. Max. memory is 16.1GB. [2024-11-27 20:18:03,419 INFO L158 Benchmark]: Boogie Preprocessor took 448.18ms. Allocated memory was 117.4MB in the beginning and 318.8MB in the end (delta: 201.3MB). Free memory was 55.1MB in the beginning and 221.1MB in the end (delta: -166.0MB). Peak memory consumption was 28.3MB. Max. memory is 16.1GB. [2024-11-27 20:18:03,420 INFO L158 Benchmark]: RCFGBuilder took 4235.01ms. Allocated memory is still 318.8MB. Free memory was 221.1MB in the beginning and 145.5MB in the end (delta: 75.6MB). Peak memory consumption was 149.9MB. Max. memory is 16.1GB. [2024-11-27 20:18:03,420 INFO L158 Benchmark]: TraceAbstraction took 278586.31ms. Allocated memory was 318.8MB in the beginning and 2.3GB in the end (delta: 2.0GB). Free memory was 145.5MB in the beginning and 1.2GB in the end (delta: -1.1GB). Peak memory consumption was 1.4GB. Max. memory is 16.1GB. [2024-11-27 20:18:03,421 INFO L158 Benchmark]: Witness Printer took 372.86ms. Allocated memory is still 2.3GB. Free memory was 1.2GB in the beginning and 1.2GB in the end (delta: 20.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-27 20:18:03,423 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40ms. Allocated memory is still 167.8MB. Free memory is still 105.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1254.67ms. Allocated memory is still 117.4MB. Free memory was 79.7MB in the beginning and 55.1MB in the end (delta: 24.6MB). Peak memory consumption was 68.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 312.11ms. Allocated memory is still 117.4MB. Free memory was 55.1MB in the beginning and 55.1MB in the end (delta: -41.0kB). Peak memory consumption was 29.9MB. Max. memory is 16.1GB. * Boogie Preprocessor took 448.18ms. Allocated memory was 117.4MB in the beginning and 318.8MB in the end (delta: 201.3MB). Free memory was 55.1MB in the beginning and 221.1MB in the end (delta: -166.0MB). Peak memory consumption was 28.3MB. Max. memory is 16.1GB. * RCFGBuilder took 4235.01ms. Allocated memory is still 318.8MB. Free memory was 221.1MB in the beginning and 145.5MB in the end (delta: 75.6MB). Peak memory consumption was 149.9MB. Max. memory is 16.1GB. * TraceAbstraction took 278586.31ms. Allocated memory was 318.8MB in the beginning and 2.3GB in the end (delta: 2.0GB). Free memory was 145.5MB in the beginning and 1.2GB in the end (delta: -1.1GB). Peak memory consumption was 1.4GB. Max. memory is 16.1GB. * Witness Printer took 372.86ms. Allocated memory is still 2.3GB. Free memory was 1.2GB in the beginning and 1.2GB in the end (delta: 20.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 179]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 424 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 130.7s, OverallIterations: 33, TraceHistogramMax: 7, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.3s, AutomataDifference: 75.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 10930 SdHoareTripleChecker+Valid, 69.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 10930 mSDsluCounter, 10923 SdHoareTripleChecker+Invalid, 59.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1275 mSDsCounter, 5973 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 35159 IncrementalHoareTripleChecker+Invalid, 41132 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5973 mSolverCounterUnsat, 9648 mSDtfsCounter, 35159 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 9570 GetRequests, 9485 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31800occurred in iteration=31, InterpolantAutomatonStates: 111, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 6.6s AutomataMinimizationTime, 33 MinimizatonAttempts, 62260 StatesRemovedByMinimization, 28 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.2s SsaConstructionTime, 4.0s SatisfiabilityAnalysisTime, 37.6s InterpolantComputationTime, 30100 NumberOfCodeBlocks, 30100 NumberOfCodeBlocksAsserted, 44 NumberOfCheckSat, 30939 ConstructedInterpolants, 104 QuantifiedInterpolants, 106795 SizeOfPredicates, 8 NumberOfNonLiveVariables, 10034 ConjunctsInSsa, 42 ConjunctsInUnsatCore, 45 InterpolantComputations, 33 PerfectInterpolantSequences, 41133/43161 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 1776]: Loop Invariant Derived loop invariant: ((((((((((((((((((((((((((((((((long long) a29 + 145) <= 0) && (((long long) 89 + a4) <= 0)) && (a2 == 1)) && (((long long) a0 + 61) <= 0)) || (((((long long) 42 + a4) <= 0) && (((long long) 98 + a0) <= 0)) && (3 == a2))) || (((2 == a2) && (0 <= ((long long) a29 + 127))) && (((long long) a0 + 147) <= 0))) || ((((5 == a2) && (((long long) 42 + a4) <= 0)) && (44 <= a29)) && (((long long) a0 + 147) <= 0))) || ((((((long long) 89 + a4) <= 0) && (a2 == 1)) && (((long long) a29 + 127) == 0)) && (((long long) 44 + a0) <= 0))) || (((((long long) 89 + a4) <= 0) && (a0 <= 599946)) && (3 == a2))) || ((((long long) 42 + a4) <= 0) && (a2 == 4))) || (((((((long long) a0 + 63) <= 0) && (a29 <= 15)) && (((long long) 42 + a4) <= 0)) && (0 <= ((long long) 146 + a0))) && (a2 == 1))) || ((((0 <= ((long long) a29 + 127)) && (((long long) 89 + a4) <= 0)) && (a2 == 1)) && (((long long) a0 + 61) <= 0))) || ((((((long long) 42 + a4) <= 0) && (44 <= a29)) && (((long long) a0 + 147) <= 0)) && (a2 == 1))) || ((((0 <= ((long long) a29 + 127)) && (((long long) 89 + a4) <= 0)) && (a2 == 4)) && (a0 <= 599976))) || ((((((long long) 42 + a4) <= 0) && (2 == a2)) && (0 <= ((long long) a4 + 85))) && (((long long) a0 + 147) <= 0))) || (((((long long) 42 + a4) <= 0) && (a2 == 1)) && (((long long) a0 + 31780) <= 0))) || ((((0 <= ((long long) a29 + 127)) && (((long long) 89 + a4) <= 0)) && (3 <= a2)) && (((long long) a0 + 61) <= 0))) || (((5 == a2) && (((long long) 42 + a4) <= 0)) && ((((long long) a0 + 31779) < 0) || (((long long) a0 + 31779) == 0)))) || (((((long long) 89 + a4) <= 0) && (3 <= a2)) && (((long long) 66 + a0) <= 0))) || (((a0 <= 599920) && (((long long) 89 + a4) <= 0)) && (a2 == 4))) || ((((long long) 89 + a4) <= 0) && (((long long) a0 + 147) <= 0))) || (((((((long long) 42 + a4) <= 0) && (0 <= ((long long) a4 + 85))) && (0 <= ((long long) a29 + 127))) && (a2 == 1)) && ((((long long) a0 + 31779) < 0) || (((long long) a0 + 31779) == 0)))) || (((((((long long) 42 + a4) <= 0) && (2 == a2)) && (0 <= ((long long) a4 + 85))) && (0 <= ((long long) a29 + 127))) && (((long long) 98 + a0) <= 0))) || (((((5 == a2) && (((long long) 42 + a4) <= 0)) && (0 <= ((long long) a29 + 127))) && (((long long) 98 + a0) <= 0)) && (0 <= ((long long) 146 + a0)))) || (((((5 == a2) && (a29 <= 15)) && (0 <= ((long long) a29 + 127))) && (((long long) 89 + a4) <= 0)) && (a0 <= 599976))) || (((2 == a2) && (((long long) 89 + a4) <= 0)) && (a0 <= 599946))) || ((((((long long) 42 + a4) <= 0) && (((long long) 98 + a0) <= 0)) && (0 <= ((long long) 146 + a0))) && (a2 == 1))) || ((((5 == a2) && (0 <= ((long long) a29 + 127))) && (((long long) 89 + a4) <= 0)) && (a0 <= 599946))) || ((((((long long) 42 + a4) <= 0) && (0 <= ((long long) a29 + 15))) && (((long long) a0 + 147) <= 0)) && (a2 == 4))) || (((((((long long) 104 + a0) <= 0) && (5 == a2)) && (((long long) 42 + a4) <= 0)) && (0 <= ((long long) a4 + 85))) && (0 <= ((long long) 146 + a0)))) RESULT: Ultimate proved your program to be correct! [2024-11-27 20:18:03,459 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ae2ebd-7914-4466-9c1f-f8a32c7012b6/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE