./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.BOUNDED-6.pals+Problem12_label04.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd074848-e0a8-4359-88e3-2246cf18529b/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd074848-e0a8-4359-88e3-2246cf18529b/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd074848-e0a8-4359-88e3-2246cf18529b/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd074848-e0a8-4359-88e3-2246cf18529b/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.BOUNDED-6.pals+Problem12_label04.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd074848-e0a8-4359-88e3-2246cf18529b/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd074848-e0a8-4359-88e3-2246cf18529b/bin/uautomizer-verify-LYvppIcaGC --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c91ca4899b5af8ca28cd56fdb53af71cf5c86f932b323279b0b6773f1f060e71 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 22:35:42,005 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 22:35:42,081 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd074848-e0a8-4359-88e3-2246cf18529b/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-23 22:35:42,086 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 22:35:42,087 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 22:35:42,113 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 22:35:42,114 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 22:35:42,115 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 22:35:42,115 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 22:35:42,115 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 22:35:42,116 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 22:35:42,117 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 22:35:42,118 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 22:35:42,118 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 22:35:42,118 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 22:35:42,118 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 22:35:42,118 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 22:35:42,118 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 22:35:42,118 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 22:35:42,119 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 22:35:42,119 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 22:35:42,119 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 22:35:42,119 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 22:35:42,119 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 22:35:42,120 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 22:35:42,120 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 22:35:42,120 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 22:35:42,120 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 22:35:42,120 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 22:35:42,120 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 22:35:42,120 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 22:35:42,121 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 22:35:42,121 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 22:35:42,122 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 22:35:42,122 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 22:35:42,122 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 22:35:42,122 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 22:35:42,122 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 22:35:42,122 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 22:35:42,123 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 22:35:42,123 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-23 22:35:42,123 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 22:35:42,123 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 22:35:42,123 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 22:35:42,123 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 22:35:42,123 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 22:35:42,123 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 22:35:42,124 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 22:35:42,124 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_fd074848-e0a8-4359-88e3-2246cf18529b/bin/uautomizer-verify-LYvppIcaGC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c91ca4899b5af8ca28cd56fdb53af71cf5c86f932b323279b0b6773f1f060e71 [2024-11-23 22:35:42,461 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 22:35:42,473 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 22:35:42,480 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 22:35:42,482 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 22:35:42,482 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 22:35:42,483 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd074848-e0a8-4359-88e3-2246cf18529b/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.BOUNDED-6.pals+Problem12_label04.c [2024-11-23 22:35:45,613 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd074848-e0a8-4359-88e3-2246cf18529b/bin/uautomizer-verify-LYvppIcaGC/data/4789281b6/8c308a496fa1494597dd511d2b507be4/FLAG7e7e0ff43 [2024-11-23 22:35:46,328 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 22:35:46,331 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd074848-e0a8-4359-88e3-2246cf18529b/sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.BOUNDED-6.pals+Problem12_label04.c [2024-11-23 22:35:46,394 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd074848-e0a8-4359-88e3-2246cf18529b/bin/uautomizer-verify-LYvppIcaGC/data/4789281b6/8c308a496fa1494597dd511d2b507be4/FLAG7e7e0ff43 [2024-11-23 22:35:46,423 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd074848-e0a8-4359-88e3-2246cf18529b/bin/uautomizer-verify-LYvppIcaGC/data/4789281b6/8c308a496fa1494597dd511d2b507be4 [2024-11-23 22:35:46,426 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 22:35:46,429 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 22:35:46,433 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 22:35:46,433 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 22:35:46,440 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 22:35:46,441 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:35:46" (1/1) ... [2024-11-23 22:35:46,443 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@703cb574 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:46, skipping insertion in model container [2024-11-23 22:35:46,443 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:35:46" (1/1) ... [2024-11-23 22:35:46,637 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 22:35:47,124 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_fd074848-e0a8-4359-88e3-2246cf18529b/sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.BOUNDED-6.pals+Problem12_label04.c[6391,6404] [2024-11-23 22:35:47,233 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_fd074848-e0a8-4359-88e3-2246cf18529b/sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.BOUNDED-6.pals+Problem12_label04.c[13452,13465] [2024-11-23 22:35:48,327 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 22:35:48,351 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 22:35:48,410 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_fd074848-e0a8-4359-88e3-2246cf18529b/sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.BOUNDED-6.pals+Problem12_label04.c[6391,6404] [2024-11-23 22:35:48,435 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_fd074848-e0a8-4359-88e3-2246cf18529b/sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.BOUNDED-6.pals+Problem12_label04.c[13452,13465] [2024-11-23 22:35:49,101 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 22:35:49,147 INFO L204 MainTranslator]: Completed translation [2024-11-23 22:35:49,147 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:49 WrapperNode [2024-11-23 22:35:49,148 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 22:35:49,149 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 22:35:49,150 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 22:35:49,151 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 22:35:49,161 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:49" (1/1) ... [2024-11-23 22:35:49,234 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:49" (1/1) ... [2024-11-23 22:35:49,701 INFO L138 Inliner]: procedures = 33, calls = 19, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 4982 [2024-11-23 22:35:49,702 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 22:35:49,703 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 22:35:49,703 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 22:35:49,703 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 22:35:49,716 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:49" (1/1) ... [2024-11-23 22:35:49,716 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:49" (1/1) ... [2024-11-23 22:35:49,796 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:49" (1/1) ... [2024-11-23 22:35:50,120 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-23 22:35:50,120 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:49" (1/1) ... [2024-11-23 22:35:50,121 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:49" (1/1) ... [2024-11-23 22:35:50,311 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:49" (1/1) ... [2024-11-23 22:35:50,331 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:49" (1/1) ... [2024-11-23 22:35:50,411 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:49" (1/1) ... [2024-11-23 22:35:50,448 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:49" (1/1) ... [2024-11-23 22:35:50,472 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:49" (1/1) ... [2024-11-23 22:35:50,541 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 22:35:50,544 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 22:35:50,544 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 22:35:50,544 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 22:35:50,545 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:49" (1/1) ... [2024-11-23 22:35:50,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 22:35:50,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd074848-e0a8-4359-88e3-2246cf18529b/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:35:50,594 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd074848-e0a8-4359-88e3-2246cf18529b/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 22:35:50,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd074848-e0a8-4359-88e3-2246cf18529b/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 22:35:50,637 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 22:35:50,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 22:35:50,637 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 22:35:50,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 22:35:50,774 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 22:35:50,776 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 22:35:56,885 INFO L? ?]: Removed 732 outVars from TransFormulas that were not future-live. [2024-11-23 22:35:56,886 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 22:35:56,934 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 22:35:56,937 INFO L312 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-23 22:35:56,937 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:35:56 BoogieIcfgContainer [2024-11-23 22:35:56,938 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 22:35:56,940 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 22:35:56,941 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 22:35:56,947 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 22:35:56,947 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 10:35:46" (1/3) ... [2024-11-23 22:35:56,949 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a7a06d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:35:56, skipping insertion in model container [2024-11-23 22:35:56,949 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:49" (2/3) ... [2024-11-23 22:35:56,949 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a7a06d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:35:56, skipping insertion in model container [2024-11-23 22:35:56,950 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:35:56" (3/3) ... [2024-11-23 22:35:56,951 INFO L128 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.1.ufo.BOUNDED-6.pals+Problem12_label04.c [2024-11-23 22:35:56,969 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 22:35:56,972 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_lcr.3.1.ufo.BOUNDED-6.pals+Problem12_label04.c that has 1 procedures, 873 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2024-11-23 22:35:57,081 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 22:35:57,101 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;@357eec7e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 22:35:57,102 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-23 22:35:57,112 INFO L276 IsEmpty]: Start isEmpty. Operand has 873 states, 870 states have (on average 1.9057471264367816) internal successors, (1658), 872 states have internal predecessors, (1658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:35:57,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-23 22:35:57,121 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:35:57,122 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] [2024-11-23 22:35:57,122 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:35:57,130 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:35:57,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1661669358, now seen corresponding path program 1 times [2024-11-23 22:35:57,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:35:57,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076419365] [2024-11-23 22:35:57,139 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:35:57,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:35:57,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:35:57,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:35:57,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:35:57,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076419365] [2024-11-23 22:35:57,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076419365] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:35:57,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:35:57,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 22:35:57,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425698035] [2024-11-23 22:35:57,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:35:57,403 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-23 22:35:57,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:35:57,423 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-23 22:35:57,424 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-23 22:35:57,430 INFO L87 Difference]: Start difference. First operand has 873 states, 870 states have (on average 1.9057471264367816) internal successors, (1658), 872 states have internal predecessors, (1658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:35:57,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:35:57,543 INFO L93 Difference]: Finished difference Result 1724 states and 3276 transitions. [2024-11-23 22:35:57,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-23 22:35:57,546 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2024-11-23 22:35:57,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:35:57,569 INFO L225 Difference]: With dead ends: 1724 [2024-11-23 22:35:57,570 INFO L226 Difference]: Without dead ends: 807 [2024-11-23 22:35:57,580 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-23 22:35:57,586 INFO L435 NwaCegarLoop]: 1592 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1592 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:35:57,587 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1592 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 22:35:57,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 807 states. [2024-11-23 22:35:57,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 807 to 807. [2024-11-23 22:35:57,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 807 states, 805 states have (on average 1.8944099378881987) internal successors, (1525), 806 states have internal predecessors, (1525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:35:57,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 807 states to 807 states and 1525 transitions. [2024-11-23 22:35:57,703 INFO L78 Accepts]: Start accepts. Automaton has 807 states and 1525 transitions. Word has length 21 [2024-11-23 22:35:57,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:35:57,703 INFO L471 AbstractCegarLoop]: Abstraction has 807 states and 1525 transitions. [2024-11-23 22:35:57,703 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:35:57,704 INFO L276 IsEmpty]: Start isEmpty. Operand 807 states and 1525 transitions. [2024-11-23 22:35:57,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-23 22:35:57,706 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:35:57,707 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] [2024-11-23 22:35:57,707 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-23 22:35:57,707 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:35:57,708 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:35:57,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1353434260, now seen corresponding path program 1 times [2024-11-23 22:35:57,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:35:57,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915147719] [2024-11-23 22:35:57,709 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:35:57,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:35:57,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:35:57,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:35:57,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:35:57,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915147719] [2024-11-23 22:35:57,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915147719] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:35:57,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:35:57,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 22:35:57,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131918227] [2024-11-23 22:35:57,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:35:57,968 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 22:35:57,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:35:57,969 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 22:35:57,969 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 22:35:57,970 INFO L87 Difference]: Start difference. First operand 807 states and 1525 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:35:58,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:35:58,106 INFO L93 Difference]: Finished difference Result 873 states and 1625 transitions. [2024-11-23 22:35:58,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 22:35:58,106 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2024-11-23 22:35:58,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:35:58,113 INFO L225 Difference]: With dead ends: 873 [2024-11-23 22:35:58,113 INFO L226 Difference]: Without dead ends: 838 [2024-11-23 22:35:58,114 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 22:35:58,117 INFO L435 NwaCegarLoop]: 1521 mSDtfsCounter, 47 mSDsluCounter, 4541 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 6062 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 22:35:58,117 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 6062 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 22:35:58,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 838 states. [2024-11-23 22:35:58,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 838 to 807. [2024-11-23 22:35:58,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 807 states, 805 states have (on average 1.8745341614906832) internal successors, (1509), 806 states have internal predecessors, (1509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:35:58,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 807 states to 807 states and 1509 transitions. [2024-11-23 22:35:58,157 INFO L78 Accepts]: Start accepts. Automaton has 807 states and 1509 transitions. Word has length 21 [2024-11-23 22:35:58,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:35:58,157 INFO L471 AbstractCegarLoop]: Abstraction has 807 states and 1509 transitions. [2024-11-23 22:35:58,157 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:35:58,158 INFO L276 IsEmpty]: Start isEmpty. Operand 807 states and 1509 transitions. [2024-11-23 22:35:58,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-23 22:35:58,159 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:35:58,159 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] [2024-11-23 22:35:58,160 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-23 22:35:58,160 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:35:58,160 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:35:58,160 INFO L85 PathProgramCache]: Analyzing trace with hash 904930012, now seen corresponding path program 1 times [2024-11-23 22:35:58,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:35:58,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555971969] [2024-11-23 22:35:58,161 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:35:58,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:35:58,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:35:58,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:35:58,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:35:58,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555971969] [2024-11-23 22:35:58,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555971969] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:35:58,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:35:58,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 22:35:58,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245474979] [2024-11-23 22:35:58,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:35:58,469 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 22:35:58,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:35:58,470 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 22:35:58,470 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 22:35:58,471 INFO L87 Difference]: Start difference. First operand 807 states and 1509 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:35:58,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:35:58,672 INFO L93 Difference]: Finished difference Result 993 states and 1797 transitions. [2024-11-23 22:35:58,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 22:35:58,673 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2024-11-23 22:35:58,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:35:58,679 INFO L225 Difference]: With dead ends: 993 [2024-11-23 22:35:58,679 INFO L226 Difference]: Without dead ends: 962 [2024-11-23 22:35:58,680 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-23 22:35:58,681 INFO L435 NwaCegarLoop]: 1503 mSDtfsCounter, 4627 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4627 SdHoareTripleChecker+Valid, 1775 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 22:35:58,682 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4627 Valid, 1775 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 22:35:58,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 962 states. [2024-11-23 22:35:58,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 962 to 836. [2024-11-23 22:35:58,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 836 states, 834 states have (on average 1.8633093525179856) internal successors, (1554), 835 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:35:58,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 836 states to 836 states and 1554 transitions. [2024-11-23 22:35:58,719 INFO L78 Accepts]: Start accepts. Automaton has 836 states and 1554 transitions. Word has length 36 [2024-11-23 22:35:58,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:35:58,719 INFO L471 AbstractCegarLoop]: Abstraction has 836 states and 1554 transitions. [2024-11-23 22:35:58,720 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:35:58,720 INFO L276 IsEmpty]: Start isEmpty. Operand 836 states and 1554 transitions. [2024-11-23 22:35:58,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-23 22:35:58,721 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:35:58,721 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] [2024-11-23 22:35:58,722 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-23 22:35:58,722 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:35:58,722 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:35:58,722 INFO L85 PathProgramCache]: Analyzing trace with hash 638646444, now seen corresponding path program 1 times [2024-11-23 22:35:58,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:35:58,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077564716] [2024-11-23 22:35:58,723 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:35:58,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:35:58,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:35:58,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:35:58,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:35:58,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077564716] [2024-11-23 22:35:58,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077564716] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:35:58,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:35:58,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 22:35:58,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827273580] [2024-11-23 22:35:58,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:35:58,859 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 22:35:58,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:35:58,860 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 22:35:58,860 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 22:35:58,860 INFO L87 Difference]: Start difference. First operand 836 states and 1554 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:35:58,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:35:58,912 INFO L93 Difference]: Finished difference Result 945 states and 1721 transitions. [2024-11-23 22:35:58,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 22:35:58,913 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 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 38 [2024-11-23 22:35:58,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:35:58,918 INFO L225 Difference]: With dead ends: 945 [2024-11-23 22:35:58,918 INFO L226 Difference]: Without dead ends: 885 [2024-11-23 22:35:58,919 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 22:35:58,921 INFO L435 NwaCegarLoop]: 1506 mSDtfsCounter, 1466 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1466 SdHoareTripleChecker+Valid, 1549 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:35:58,923 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1466 Valid, 1549 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 22:35:58,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 885 states. [2024-11-23 22:35:58,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 885 to 883. [2024-11-23 22:35:58,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 883 states, 881 states have (on average 1.8433598183881952) internal successors, (1624), 882 states have internal predecessors, (1624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:35:58,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1624 transitions. [2024-11-23 22:35:58,966 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1624 transitions. Word has length 38 [2024-11-23 22:35:58,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:35:58,967 INFO L471 AbstractCegarLoop]: Abstraction has 883 states and 1624 transitions. [2024-11-23 22:35:58,967 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:35:58,967 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1624 transitions. [2024-11-23 22:35:58,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-23 22:35:58,971 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:35:58,972 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] [2024-11-23 22:35:58,972 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-23 22:35:58,972 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:35:58,972 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:35:58,973 INFO L85 PathProgramCache]: Analyzing trace with hash 705139956, now seen corresponding path program 1 times [2024-11-23 22:35:58,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:35:58,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719463269] [2024-11-23 22:35:58,973 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:35:58,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:35:59,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:35:59,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:35:59,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:35:59,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719463269] [2024-11-23 22:35:59,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719463269] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:35:59,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:35:59,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 22:35:59,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212596978] [2024-11-23 22:35:59,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:35:59,303 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 22:35:59,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:35:59,304 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 22:35:59,304 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-23 22:35:59,304 INFO L87 Difference]: Start difference. First operand 883 states and 1624 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:35:59,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:35:59,449 INFO L93 Difference]: Finished difference Result 992 states and 1788 transitions. [2024-11-23 22:35:59,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 22:35:59,450 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 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 38 [2024-11-23 22:35:59,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:35:59,455 INFO L225 Difference]: With dead ends: 992 [2024-11-23 22:35:59,455 INFO L226 Difference]: Without dead ends: 885 [2024-11-23 22:35:59,456 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-23 22:35:59,458 INFO L435 NwaCegarLoop]: 1504 mSDtfsCounter, 1475 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1475 SdHoareTripleChecker+Valid, 1636 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 22:35:59,458 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1475 Valid, 1636 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 22:35:59,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 885 states. [2024-11-23 22:35:59,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 885 to 883. [2024-11-23 22:35:59,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 883 states, 881 states have (on average 1.8410896708286038) internal successors, (1622), 882 states have internal predecessors, (1622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:35:59,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1622 transitions. [2024-11-23 22:35:59,493 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1622 transitions. Word has length 38 [2024-11-23 22:35:59,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:35:59,495 INFO L471 AbstractCegarLoop]: Abstraction has 883 states and 1622 transitions. [2024-11-23 22:35:59,495 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:35:59,495 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1622 transitions. [2024-11-23 22:35:59,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-23 22:35:59,497 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:35:59,497 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] [2024-11-23 22:35:59,497 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-23 22:35:59,497 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:35:59,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:35:59,498 INFO L85 PathProgramCache]: Analyzing trace with hash -30221064, now seen corresponding path program 1 times [2024-11-23 22:35:59,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:35:59,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901085920] [2024-11-23 22:35:59,498 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:35:59,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:35:59,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:35:59,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:35:59,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:35:59,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901085920] [2024-11-23 22:35:59,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901085920] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:35:59,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:35:59,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 22:35:59,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246698117] [2024-11-23 22:35:59,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:35:59,829 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 22:35:59,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:35:59,829 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 22:35:59,829 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 22:35:59,830 INFO L87 Difference]: Start difference. First operand 883 states and 1622 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:35:59,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:35:59,912 INFO L93 Difference]: Finished difference Result 891 states and 1631 transitions. [2024-11-23 22:35:59,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 22:35:59,913 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2024-11-23 22:35:59,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:35:59,923 INFO L225 Difference]: With dead ends: 891 [2024-11-23 22:35:59,923 INFO L226 Difference]: Without dead ends: 889 [2024-11-23 22:35:59,924 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 22:35:59,924 INFO L435 NwaCegarLoop]: 1506 mSDtfsCounter, 0 mSDsluCounter, 4509 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6015 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:35:59,925 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6015 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 22:35:59,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 889 states. [2024-11-23 22:35:59,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 889 to 889. [2024-11-23 22:35:59,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 889 states, 887 states have (on average 1.834272829763247) internal successors, (1627), 888 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:35:59,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 889 states to 889 states and 1627 transitions. [2024-11-23 22:35:59,967 INFO L78 Accepts]: Start accepts. Automaton has 889 states and 1627 transitions. Word has length 39 [2024-11-23 22:35:59,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:35:59,968 INFO L471 AbstractCegarLoop]: Abstraction has 889 states and 1627 transitions. [2024-11-23 22:35:59,968 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:35:59,968 INFO L276 IsEmpty]: Start isEmpty. Operand 889 states and 1627 transitions. [2024-11-23 22:35:59,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-23 22:35:59,969 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:35:59,969 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] [2024-11-23 22:35:59,969 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-23 22:35:59,969 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:35:59,970 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:35:59,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1276756908, now seen corresponding path program 1 times [2024-11-23 22:35:59,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:35:59,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046673617] [2024-11-23 22:35:59,971 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:35:59,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:35:59,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:00,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:36:00,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:36:00,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046673617] [2024-11-23 22:36:00,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046673617] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:36:00,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:36:00,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 22:36:00,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598951497] [2024-11-23 22:36:00,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:36:00,059 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 22:36:00,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:36:00,061 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 22:36:00,061 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 22:36:00,062 INFO L87 Difference]: Start difference. First operand 889 states and 1627 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:36:00,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:36:00,115 INFO L93 Difference]: Finished difference Result 1099 states and 1931 transitions. [2024-11-23 22:36:00,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 22:36:00,116 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 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 40 [2024-11-23 22:36:00,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:36:00,120 INFO L225 Difference]: With dead ends: 1099 [2024-11-23 22:36:00,121 INFO L226 Difference]: Without dead ends: 986 [2024-11-23 22:36:00,121 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 22:36:00,122 INFO L435 NwaCegarLoop]: 1535 mSDtfsCounter, 1474 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1474 SdHoareTripleChecker+Valid, 1588 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:36:00,123 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1474 Valid, 1588 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 22:36:00,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 986 states. [2024-11-23 22:36:00,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 986 to 984. [2024-11-23 22:36:00,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 984 states, 982 states have (on average 1.7922606924643585) internal successors, (1760), 983 states have internal predecessors, (1760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:36:00,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 984 states to 984 states and 1760 transitions. [2024-11-23 22:36:00,162 INFO L78 Accepts]: Start accepts. Automaton has 984 states and 1760 transitions. Word has length 40 [2024-11-23 22:36:00,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:36:00,162 INFO L471 AbstractCegarLoop]: Abstraction has 984 states and 1760 transitions. [2024-11-23 22:36:00,162 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:36:00,162 INFO L276 IsEmpty]: Start isEmpty. Operand 984 states and 1760 transitions. [2024-11-23 22:36:00,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-23 22:36:00,163 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:36:00,163 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] [2024-11-23 22:36:00,163 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-23 22:36:00,163 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:36:00,164 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:36:00,164 INFO L85 PathProgramCache]: Analyzing trace with hash 504175956, now seen corresponding path program 1 times [2024-11-23 22:36:00,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:36:00,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997255086] [2024-11-23 22:36:00,166 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:00,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:36:00,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:00,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:36:00,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:36:00,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997255086] [2024-11-23 22:36:00,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997255086] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:36:00,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:36:00,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 22:36:00,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659394814] [2024-11-23 22:36:00,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:36:00,244 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 22:36:00,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:36:00,244 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 22:36:00,245 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 22:36:00,245 INFO L87 Difference]: Start difference. First operand 984 states and 1760 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:36:00,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:36:00,301 INFO L93 Difference]: Finished difference Result 1368 states and 2302 transitions. [2024-11-23 22:36:00,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 22:36:00,302 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 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 40 [2024-11-23 22:36:00,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:36:00,307 INFO L225 Difference]: With dead ends: 1368 [2024-11-23 22:36:00,308 INFO L226 Difference]: Without dead ends: 1160 [2024-11-23 22:36:00,308 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 22:36:00,309 INFO L435 NwaCegarLoop]: 1533 mSDtfsCounter, 1472 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1472 SdHoareTripleChecker+Valid, 1590 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:36:00,309 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1472 Valid, 1590 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 22:36:00,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1160 states. [2024-11-23 22:36:00,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1160 to 1158. [2024-11-23 22:36:00,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1158 states, 1156 states have (on average 1.7249134948096885) internal successors, (1994), 1157 states have internal predecessors, (1994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:36:00,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1158 states to 1158 states and 1994 transitions. [2024-11-23 22:36:00,355 INFO L78 Accepts]: Start accepts. Automaton has 1158 states and 1994 transitions. Word has length 40 [2024-11-23 22:36:00,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:36:00,356 INFO L471 AbstractCegarLoop]: Abstraction has 1158 states and 1994 transitions. [2024-11-23 22:36:00,356 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:36:00,356 INFO L276 IsEmpty]: Start isEmpty. Operand 1158 states and 1994 transitions. [2024-11-23 22:36:00,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-23 22:36:00,357 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:36:00,357 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] [2024-11-23 22:36:00,357 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-23 22:36:00,357 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:36:00,357 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:36:00,357 INFO L85 PathProgramCache]: Analyzing trace with hash 938711892, now seen corresponding path program 1 times [2024-11-23 22:36:00,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:36:00,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62792872] [2024-11-23 22:36:00,358 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:00,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:36:00,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:00,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:36:00,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:36:00,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62792872] [2024-11-23 22:36:00,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62792872] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:36:00,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:36:00,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 22:36:00,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718949253] [2024-11-23 22:36:00,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:36:00,439 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 22:36:00,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:36:00,439 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 22:36:00,439 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 22:36:00,440 INFO L87 Difference]: Start difference. First operand 1158 states and 1994 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:36:00,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:36:00,492 INFO L93 Difference]: Finished difference Result 1581 states and 2592 transitions. [2024-11-23 22:36:00,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 22:36:00,493 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 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 40 [2024-11-23 22:36:00,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:36:00,499 INFO L225 Difference]: With dead ends: 1581 [2024-11-23 22:36:00,499 INFO L226 Difference]: Without dead ends: 1355 [2024-11-23 22:36:00,500 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 22:36:00,501 INFO L435 NwaCegarLoop]: 1541 mSDtfsCounter, 1476 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1476 SdHoareTripleChecker+Valid, 1590 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:36:00,501 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1476 Valid, 1590 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 22:36:00,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1355 states. [2024-11-23 22:36:00,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1355 to 1353. [2024-11-23 22:36:00,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1353 states, 1351 states have (on average 1.6706143597335308) internal successors, (2257), 1352 states have internal predecessors, (2257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:36:00,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1353 states to 1353 states and 2257 transitions. [2024-11-23 22:36:00,552 INFO L78 Accepts]: Start accepts. Automaton has 1353 states and 2257 transitions. Word has length 40 [2024-11-23 22:36:00,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:36:00,552 INFO L471 AbstractCegarLoop]: Abstraction has 1353 states and 2257 transitions. [2024-11-23 22:36:00,553 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:36:00,553 INFO L276 IsEmpty]: Start isEmpty. Operand 1353 states and 2257 transitions. [2024-11-23 22:36:00,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-23 22:36:00,554 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:36:00,554 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:36:00,554 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-23 22:36:00,555 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:36:00,555 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:36:00,555 INFO L85 PathProgramCache]: Analyzing trace with hash -1906548838, now seen corresponding path program 1 times [2024-11-23 22:36:00,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:36:00,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855294791] [2024-11-23 22:36:00,556 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:00,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:36:00,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:00,731 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-23 22:36:00,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:36:00,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855294791] [2024-11-23 22:36:00,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855294791] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:36:00,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:36:00,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 22:36:00,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957723611] [2024-11-23 22:36:00,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:36:00,732 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 22:36:00,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:36:00,732 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 22:36:00,732 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-23 22:36:00,732 INFO L87 Difference]: Start difference. First operand 1353 states and 2257 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:36:00,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:36:00,906 INFO L93 Difference]: Finished difference Result 3209 states and 4809 transitions. [2024-11-23 22:36:00,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 22:36:00,907 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 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 56 [2024-11-23 22:36:00,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:36:00,919 INFO L225 Difference]: With dead ends: 3209 [2024-11-23 22:36:00,919 INFO L226 Difference]: Without dead ends: 2635 [2024-11-23 22:36:00,921 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-23 22:36:00,921 INFO L435 NwaCegarLoop]: 1548 mSDtfsCounter, 3044 mSDsluCounter, 1601 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3044 SdHoareTripleChecker+Valid, 3149 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 22:36:00,922 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3044 Valid, 3149 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 22:36:00,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2635 states. [2024-11-23 22:36:01,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2635 to 1925. [2024-11-23 22:36:01,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1925 states, 1923 states have (on average 1.579303172126885) internal successors, (3037), 1924 states have internal predecessors, (3037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:36:01,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1925 states to 1925 states and 3037 transitions. [2024-11-23 22:36:01,021 INFO L78 Accepts]: Start accepts. Automaton has 1925 states and 3037 transitions. Word has length 56 [2024-11-23 22:36:01,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:36:01,021 INFO L471 AbstractCegarLoop]: Abstraction has 1925 states and 3037 transitions. [2024-11-23 22:36:01,021 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:36:01,021 INFO L276 IsEmpty]: Start isEmpty. Operand 1925 states and 3037 transitions. [2024-11-23 22:36:01,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-23 22:36:01,023 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:36:01,023 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:36:01,023 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-23 22:36:01,023 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:36:01,024 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:36:01,024 INFO L85 PathProgramCache]: Analyzing trace with hash -125615974, now seen corresponding path program 1 times [2024-11-23 22:36:01,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:36:01,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070391812] [2024-11-23 22:36:01,024 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:01,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:36:01,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:01,223 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-23 22:36:01,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:36:01,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070391812] [2024-11-23 22:36:01,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070391812] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:36:01,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:36:01,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 22:36:01,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690729583] [2024-11-23 22:36:01,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:36:01,224 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 22:36:01,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:36:01,225 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 22:36:01,225 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-23 22:36:01,225 INFO L87 Difference]: Start difference. First operand 1925 states and 3037 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:36:01,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:36:01,395 INFO L93 Difference]: Finished difference Result 3781 states and 5589 transitions. [2024-11-23 22:36:01,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 22:36:01,395 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 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 56 [2024-11-23 22:36:01,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:36:01,410 INFO L225 Difference]: With dead ends: 3781 [2024-11-23 22:36:01,410 INFO L226 Difference]: Without dead ends: 3207 [2024-11-23 22:36:01,412 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-23 22:36:01,413 INFO L435 NwaCegarLoop]: 1549 mSDtfsCounter, 3050 mSDsluCounter, 1599 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3050 SdHoareTripleChecker+Valid, 3148 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 22:36:01,414 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3050 Valid, 3148 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 22:36:01,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3207 states. [2024-11-23 22:36:01,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3207 to 2785. [2024-11-23 22:36:01,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2785 states, 2783 states have (on average 1.5080848005749192) internal successors, (4197), 2784 states have internal predecessors, (4197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:36:01,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2785 states to 2785 states and 4197 transitions. [2024-11-23 22:36:01,522 INFO L78 Accepts]: Start accepts. Automaton has 2785 states and 4197 transitions. Word has length 56 [2024-11-23 22:36:01,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:36:01,522 INFO L471 AbstractCegarLoop]: Abstraction has 2785 states and 4197 transitions. [2024-11-23 22:36:01,522 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:36:01,523 INFO L276 IsEmpty]: Start isEmpty. Operand 2785 states and 4197 transitions. [2024-11-23 22:36:01,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-23 22:36:01,525 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:36:01,525 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:36:01,525 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-23 22:36:01,525 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:36:01,526 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:36:01,526 INFO L85 PathProgramCache]: Analyzing trace with hash 308919962, now seen corresponding path program 1 times [2024-11-23 22:36:01,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:36:01,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988994302] [2024-11-23 22:36:01,526 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:01,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:36:01,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:01,682 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-23 22:36:01,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:36:01,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988994302] [2024-11-23 22:36:01,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988994302] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:36:01,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:36:01,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 22:36:01,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42284334] [2024-11-23 22:36:01,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:36:01,684 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 22:36:01,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:36:01,684 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 22:36:01,684 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-23 22:36:01,684 INFO L87 Difference]: Start difference. First operand 2785 states and 4197 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 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) [2024-11-23 22:36:01,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:36:01,908 INFO L93 Difference]: Finished difference Result 4041 states and 5953 transitions. [2024-11-23 22:36:01,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 22:36:01,909 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 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 56 [2024-11-23 22:36:01,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:36:01,923 INFO L225 Difference]: With dead ends: 4041 [2024-11-23 22:36:01,923 INFO L226 Difference]: Without dead ends: 3623 [2024-11-23 22:36:01,925 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-23 22:36:01,925 INFO L435 NwaCegarLoop]: 1547 mSDtfsCounter, 3041 mSDsluCounter, 1624 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3041 SdHoareTripleChecker+Valid, 3171 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 22:36:01,926 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3041 Valid, 3171 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 22:36:01,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3623 states. [2024-11-23 22:36:02,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3623 to 3201. [2024-11-23 22:36:02,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3201 states, 3199 states have (on average 1.4920287589871835) internal successors, (4773), 3200 states have internal predecessors, (4773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:36:02,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3201 states to 3201 states and 4773 transitions. [2024-11-23 22:36:02,087 INFO L78 Accepts]: Start accepts. Automaton has 3201 states and 4773 transitions. Word has length 56 [2024-11-23 22:36:02,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:36:02,087 INFO L471 AbstractCegarLoop]: Abstraction has 3201 states and 4773 transitions. [2024-11-23 22:36:02,087 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 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) [2024-11-23 22:36:02,087 INFO L276 IsEmpty]: Start isEmpty. Operand 3201 states and 4773 transitions. [2024-11-23 22:36:02,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-23 22:36:02,089 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:36:02,089 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:36:02,089 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-23 22:36:02,089 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:36:02,089 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:36:02,090 INFO L85 PathProgramCache]: Analyzing trace with hash 977738755, now seen corresponding path program 1 times [2024-11-23 22:36:02,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:36:02,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37473717] [2024-11-23 22:36:02,090 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:02,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:36:02,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:02,217 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:36:02,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:36:02,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37473717] [2024-11-23 22:36:02,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37473717] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:36:02,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:36:02,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 22:36:02,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340945848] [2024-11-23 22:36:02,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:36:02,218 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 22:36:02,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:36:02,218 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 22:36:02,218 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 22:36:02,218 INFO L87 Difference]: Start difference. First operand 3201 states and 4773 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:36:02,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:36:02,292 INFO L93 Difference]: Finished difference Result 5625 states and 8083 transitions. [2024-11-23 22:36:02,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 22:36:02,293 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 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 57 [2024-11-23 22:36:02,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:36:02,303 INFO L225 Difference]: With dead ends: 5625 [2024-11-23 22:36:02,304 INFO L226 Difference]: Without dead ends: 3203 [2024-11-23 22:36:02,307 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 22:36:02,308 INFO L435 NwaCegarLoop]: 1528 mSDtfsCounter, 29 mSDsluCounter, 1497 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 3025 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:36:02,308 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 3025 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 22:36:02,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3203 states. [2024-11-23 22:36:02,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3203 to 3201. [2024-11-23 22:36:02,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3201 states, 3199 states have (on average 1.4763988746483276) internal successors, (4723), 3200 states have internal predecessors, (4723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:36:02,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3201 states to 3201 states and 4723 transitions. [2024-11-23 22:36:02,406 INFO L78 Accepts]: Start accepts. Automaton has 3201 states and 4723 transitions. Word has length 57 [2024-11-23 22:36:02,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:36:02,406 INFO L471 AbstractCegarLoop]: Abstraction has 3201 states and 4723 transitions. [2024-11-23 22:36:02,407 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:36:02,407 INFO L276 IsEmpty]: Start isEmpty. Operand 3201 states and 4723 transitions. [2024-11-23 22:36:02,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-23 22:36:02,408 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:36:02,408 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:36:02,408 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-23 22:36:02,409 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:36:02,409 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:36:02,409 INFO L85 PathProgramCache]: Analyzing trace with hash 408394290, now seen corresponding path program 1 times [2024-11-23 22:36:02,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:36:02,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10627369] [2024-11-23 22:36:02,409 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:02,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:36:02,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:02,513 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:36:02,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:36:02,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10627369] [2024-11-23 22:36:02,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10627369] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:36:02,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:36:02,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 22:36:02,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127843540] [2024-11-23 22:36:02,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:36:02,514 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 22:36:02,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:36:02,514 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 22:36:02,514 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 22:36:02,515 INFO L87 Difference]: Start difference. First operand 3201 states and 4723 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:36:02,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:36:02,570 INFO L93 Difference]: Finished difference Result 4157 states and 6020 transitions. [2024-11-23 22:36:02,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 22:36:02,570 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2024-11-23 22:36:02,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:36:02,583 INFO L225 Difference]: With dead ends: 4157 [2024-11-23 22:36:02,583 INFO L226 Difference]: Without dead ends: 1735 [2024-11-23 22:36:02,586 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 22:36:02,586 INFO L435 NwaCegarLoop]: 1526 mSDtfsCounter, 23 mSDsluCounter, 1496 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 3022 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:36:02,587 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 3022 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 22:36:02,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1735 states. [2024-11-23 22:36:02,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1735 to 1726. [2024-11-23 22:36:02,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1726 states, 1724 states have (on average 1.58584686774942) internal successors, (2734), 1725 states have internal predecessors, (2734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:36:02,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1726 states to 1726 states and 2734 transitions. [2024-11-23 22:36:02,646 INFO L78 Accepts]: Start accepts. Automaton has 1726 states and 2734 transitions. Word has length 58 [2024-11-23 22:36:02,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:36:02,646 INFO L471 AbstractCegarLoop]: Abstraction has 1726 states and 2734 transitions. [2024-11-23 22:36:02,647 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:36:02,647 INFO L276 IsEmpty]: Start isEmpty. Operand 1726 states and 2734 transitions. [2024-11-23 22:36:02,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-23 22:36:02,650 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:36:02,650 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:36:02,650 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-23 22:36:02,650 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:36:02,651 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:36:02,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1553558485, now seen corresponding path program 1 times [2024-11-23 22:36:02,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:36:02,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240013945] [2024-11-23 22:36:02,651 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:02,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:36:02,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:02,777 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:36:02,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:36:02,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240013945] [2024-11-23 22:36:02,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240013945] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:36:02,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:36:02,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 22:36:02,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220820971] [2024-11-23 22:36:02,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:36:02,778 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 22:36:02,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:36:02,778 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 22:36:02,778 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 22:36:02,779 INFO L87 Difference]: Start difference. First operand 1726 states and 2734 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:36:02,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:36:02,831 INFO L93 Difference]: Finished difference Result 2198 states and 3366 transitions. [2024-11-23 22:36:02,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 22:36:02,832 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2024-11-23 22:36:02,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:36:02,840 INFO L225 Difference]: With dead ends: 2198 [2024-11-23 22:36:02,844 INFO L226 Difference]: Without dead ends: 1260 [2024-11-23 22:36:02,845 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 22:36:02,846 INFO L435 NwaCegarLoop]: 1520 mSDtfsCounter, 25 mSDsluCounter, 1481 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 3001 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:36:02,846 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 3001 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 22:36:02,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1260 states. [2024-11-23 22:36:02,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1260 to 1258. [2024-11-23 22:36:02,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1258 states, 1256 states have (on average 1.6679936305732483) internal successors, (2095), 1257 states have internal predecessors, (2095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:36:02,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1258 states to 1258 states and 2095 transitions. [2024-11-23 22:36:02,896 INFO L78 Accepts]: Start accepts. Automaton has 1258 states and 2095 transitions. Word has length 59 [2024-11-23 22:36:02,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:36:02,897 INFO L471 AbstractCegarLoop]: Abstraction has 1258 states and 2095 transitions. [2024-11-23 22:36:02,897 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:36:02,897 INFO L276 IsEmpty]: Start isEmpty. Operand 1258 states and 2095 transitions. [2024-11-23 22:36:02,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-23 22:36:02,900 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:36:02,900 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:36:02,900 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-23 22:36:02,900 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:36:02,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:36:02,902 INFO L85 PathProgramCache]: Analyzing trace with hash -1066169817, now seen corresponding path program 1 times [2024-11-23 22:36:02,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:36:02,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651037939] [2024-11-23 22:36:02,903 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:02,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:36:02,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:03,118 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-23 22:36:03,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:36:03,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651037939] [2024-11-23 22:36:03,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651037939] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:36:03,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [902890074] [2024-11-23 22:36:03,119 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:03,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:36:03,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd074848-e0a8-4359-88e3-2246cf18529b/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:36:03,124 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd074848-e0a8-4359-88e3-2246cf18529b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:36:03,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd074848-e0a8-4359-88e3-2246cf18529b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 22:36:03,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:03,289 INFO L256 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-23 22:36:03,298 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:36:03,558 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-23 22:36:03,558 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 22:36:04,050 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-23 22:36:04,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [902890074] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 22:36:04,051 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 22:36:04,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 10 [2024-11-23 22:36:04,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243971623] [2024-11-23 22:36:04,051 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 22:36:04,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-23 22:36:04,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:36:04,052 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-23 22:36:04,052 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2024-11-23 22:36:04,053 INFO L87 Difference]: Start difference. First operand 1258 states and 2095 transitions. Second operand has 10 states, 10 states have (on average 15.9) internal successors, (159), 10 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:36:04,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:36:04,212 INFO L93 Difference]: Finished difference Result 2375 states and 3544 transitions. [2024-11-23 22:36:04,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 22:36:04,213 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 15.9) internal successors, (159), 10 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2024-11-23 22:36:04,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:36:04,218 INFO L225 Difference]: With dead ends: 2375 [2024-11-23 22:36:04,219 INFO L226 Difference]: Without dead ends: 1905 [2024-11-23 22:36:04,220 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2024-11-23 22:36:04,221 INFO L435 NwaCegarLoop]: 1518 mSDtfsCounter, 2971 mSDsluCounter, 4578 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2971 SdHoareTripleChecker+Valid, 6096 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 22:36:04,221 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2971 Valid, 6096 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 22:36:04,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1905 states. [2024-11-23 22:36:04,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1905 to 1841. [2024-11-23 22:36:04,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1841 states, 1839 states have (on average 1.524741707449701) internal successors, (2804), 1840 states have internal predecessors, (2804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:36:04,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1841 states to 1841 states and 2804 transitions. [2024-11-23 22:36:04,283 INFO L78 Accepts]: Start accepts. Automaton has 1841 states and 2804 transitions. Word has length 61 [2024-11-23 22:36:04,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:36:04,283 INFO L471 AbstractCegarLoop]: Abstraction has 1841 states and 2804 transitions. [2024-11-23 22:36:04,284 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.9) internal successors, (159), 10 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:36:04,284 INFO L276 IsEmpty]: Start isEmpty. Operand 1841 states and 2804 transitions. [2024-11-23 22:36:04,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-23 22:36:04,284 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:36:04,284 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, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:36:04,297 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd074848-e0a8-4359-88e3-2246cf18529b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-23 22:36:04,488 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd074848-e0a8-4359-88e3-2246cf18529b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-23 22:36:04,489 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:36:04,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:36:04,490 INFO L85 PathProgramCache]: Analyzing trace with hash 186928309, now seen corresponding path program 1 times [2024-11-23 22:36:04,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:36:04,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573462512] [2024-11-23 22:36:04,490 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:04,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:36:04,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:04,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:36:04,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:36:04,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573462512] [2024-11-23 22:36:04,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573462512] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:36:04,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:36:04,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 22:36:04,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607105878] [2024-11-23 22:36:04,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:36:04,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 22:36:04,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:36:04,692 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 22:36:04,692 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 22:36:04,693 INFO L87 Difference]: Start difference. First operand 1841 states and 2804 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:36:13,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:36:13,136 INFO L93 Difference]: Finished difference Result 4096 states and 7113 transitions. [2024-11-23 22:36:13,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 22:36:13,136 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2024-11-23 22:36:13,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:36:13,145 INFO L225 Difference]: With dead ends: 4096 [2024-11-23 22:36:13,145 INFO L226 Difference]: Without dead ends: 3343 [2024-11-23 22:36:13,147 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 [2024-11-23 22:36:13,148 INFO L435 NwaCegarLoop]: 745 mSDtfsCounter, 2331 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5354 mSolverCounterSat, 1153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2331 SdHoareTripleChecker+Valid, 763 SdHoareTripleChecker+Invalid, 6507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1153 IncrementalHoareTripleChecker+Valid, 5354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2024-11-23 22:36:13,148 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2331 Valid, 763 Invalid, 6507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1153 Valid, 5354 Invalid, 0 Unknown, 0 Unchecked, 8.2s Time] [2024-11-23 22:36:13,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3343 states. [2024-11-23 22:36:13,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3343 to 3343. [2024-11-23 22:36:13,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3343 states, 3341 states have (on average 1.4720143669560013) internal successors, (4918), 3342 states have internal predecessors, (4918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:36:13,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3343 states to 3343 states and 4918 transitions. [2024-11-23 22:36:13,247 INFO L78 Accepts]: Start accepts. Automaton has 3343 states and 4918 transitions. Word has length 61 [2024-11-23 22:36:13,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:36:13,247 INFO L471 AbstractCegarLoop]: Abstraction has 3343 states and 4918 transitions. [2024-11-23 22:36:13,247 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:36:13,247 INFO L276 IsEmpty]: Start isEmpty. Operand 3343 states and 4918 transitions. [2024-11-23 22:36:13,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-23 22:36:13,248 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:36:13,248 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:36:13,248 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-23 22:36:13,249 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:36:13,249 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:36:13,249 INFO L85 PathProgramCache]: Analyzing trace with hash -1754593394, now seen corresponding path program 1 times [2024-11-23 22:36:13,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:36:13,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311671638] [2024-11-23 22:36:13,249 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:13,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:36:13,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:14,030 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:36:14,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:36:14,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311671638] [2024-11-23 22:36:14,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311671638] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:36:14,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1050596703] [2024-11-23 22:36:14,031 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:14,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:36:14,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd074848-e0a8-4359-88e3-2246cf18529b/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:36:14,034 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd074848-e0a8-4359-88e3-2246cf18529b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:36:14,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd074848-e0a8-4359-88e3-2246cf18529b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-23 22:36:14,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:14,159 INFO L256 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-23 22:36:14,162 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:36:14,685 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:36:14,686 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 22:36:15,902 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:36:15,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1050596703] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 22:36:15,902 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 22:36:15,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2024-11-23 22:36:15,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864209549] [2024-11-23 22:36:15,903 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 22:36:15,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-23 22:36:15,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:36:15,904 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-23 22:36:15,904 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2024-11-23 22:36:15,904 INFO L87 Difference]: Start difference. First operand 3343 states and 4918 transitions. Second operand has 21 states, 21 states have (on average 6.0) internal successors, (126), 20 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:36:16,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:36:16,442 INFO L93 Difference]: Finished difference Result 5239 states and 7304 transitions. [2024-11-23 22:36:16,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-23 22:36:16,443 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 6.0) internal successors, (126), 20 states have internal predecessors, (126), 0 states have call successors, (0), 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 62 [2024-11-23 22:36:16,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:36:16,453 INFO L225 Difference]: With dead ends: 5239 [2024-11-23 22:36:16,454 INFO L226 Difference]: Without dead ends: 4271 [2024-11-23 22:36:16,456 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=208, Invalid=604, Unknown=0, NotChecked=0, Total=812 [2024-11-23 22:36:16,457 INFO L435 NwaCegarLoop]: 1493 mSDtfsCounter, 13649 mSDsluCounter, 3129 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13649 SdHoareTripleChecker+Valid, 4622 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-23 22:36:16,457 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13649 Valid, 4622 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-23 22:36:16,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4271 states. [2024-11-23 22:36:16,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4271 to 4267. [2024-11-23 22:36:16,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4267 states, 4265 states have (on average 1.42063305978898) internal successors, (6059), 4266 states have internal predecessors, (6059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:36:16,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4267 states to 4267 states and 6059 transitions. [2024-11-23 22:36:16,585 INFO L78 Accepts]: Start accepts. Automaton has 4267 states and 6059 transitions. Word has length 62 [2024-11-23 22:36:16,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:36:16,585 INFO L471 AbstractCegarLoop]: Abstraction has 4267 states and 6059 transitions. [2024-11-23 22:36:16,585 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 6.0) internal successors, (126), 20 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:36:16,585 INFO L276 IsEmpty]: Start isEmpty. Operand 4267 states and 6059 transitions. [2024-11-23 22:36:16,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-23 22:36:16,586 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:36:16,586 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:36:16,597 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd074848-e0a8-4359-88e3-2246cf18529b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-23 22:36:16,787 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd074848-e0a8-4359-88e3-2246cf18529b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-23 22:36:16,787 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:36:16,788 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:36:16,788 INFO L85 PathProgramCache]: Analyzing trace with hash 1327227278, now seen corresponding path program 1 times [2024-11-23 22:36:16,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:36:16,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462808410] [2024-11-23 22:36:16,788 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:16,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:36:16,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:17,481 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:36:17,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:36:17,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462808410] [2024-11-23 22:36:17,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462808410] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:36:17,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1418674521] [2024-11-23 22:36:17,482 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:17,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:36:17,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd074848-e0a8-4359-88e3-2246cf18529b/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:36:17,484 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd074848-e0a8-4359-88e3-2246cf18529b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:36:17,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd074848-e0a8-4359-88e3-2246cf18529b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-23 22:36:17,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:17,630 INFO L256 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-23 22:36:17,633 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:36:19,489 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:36:19,489 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 22:36:23,914 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:36:23,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1418674521] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 22:36:23,915 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 22:36:23,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 18, 19] total 41 [2024-11-23 22:36:23,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215878157] [2024-11-23 22:36:23,915 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 22:36:23,916 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-23 22:36:23,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:36:23,917 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-23 22:36:23,917 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=293, Invalid=1347, Unknown=0, NotChecked=0, Total=1640 [2024-11-23 22:36:23,918 INFO L87 Difference]: Start difference. First operand 4267 states and 6059 transitions. Second operand has 41 states, 41 states have (on average 3.7560975609756095) internal successors, (154), 41 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:36:28,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:36:28,762 INFO L93 Difference]: Finished difference Result 11237 states and 14790 transitions. [2024-11-23 22:36:28,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-11-23 22:36:28,762 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.7560975609756095) internal successors, (154), 41 states have internal predecessors, (154), 0 states have call successors, (0), 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 62 [2024-11-23 22:36:28,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:36:28,781 INFO L225 Difference]: With dead ends: 11237 [2024-11-23 22:36:28,782 INFO L226 Difference]: Without dead ends: 9420 [2024-11-23 22:36:28,787 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2336 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=1793, Invalid=5863, Unknown=0, NotChecked=0, Total=7656 [2024-11-23 22:36:28,788 INFO L435 NwaCegarLoop]: 1507 mSDtfsCounter, 13260 mSDsluCounter, 12744 mSDsCounter, 0 mSdLazyCounter, 1140 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13260 SdHoareTripleChecker+Valid, 14251 SdHoareTripleChecker+Invalid, 1183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-23 22:36:28,788 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13260 Valid, 14251 Invalid, 1183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1140 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-23 22:36:28,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9420 states. [2024-11-23 22:36:28,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9420 to 4951. [2024-11-23 22:36:28,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4951 states, 4949 states have (on average 1.3911901394221056) internal successors, (6885), 4950 states have internal predecessors, (6885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:36:28,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4951 states to 4951 states and 6885 transitions. [2024-11-23 22:36:28,994 INFO L78 Accepts]: Start accepts. Automaton has 4951 states and 6885 transitions. Word has length 62 [2024-11-23 22:36:28,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:36:28,994 INFO L471 AbstractCegarLoop]: Abstraction has 4951 states and 6885 transitions. [2024-11-23 22:36:28,994 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.7560975609756095) internal successors, (154), 41 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:36:28,994 INFO L276 IsEmpty]: Start isEmpty. Operand 4951 states and 6885 transitions. [2024-11-23 22:36:28,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-23 22:36:28,995 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:36:28,995 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:36:29,007 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd074848-e0a8-4359-88e3-2246cf18529b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-23 22:36:29,196 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd074848-e0a8-4359-88e3-2246cf18529b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:36:29,196 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:36:29,197 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:36:29,197 INFO L85 PathProgramCache]: Analyzing trace with hash -1658760105, now seen corresponding path program 1 times [2024-11-23 22:36:29,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:36:29,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331785722] [2024-11-23 22:36:29,199 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:29,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:36:29,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:29,625 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:36:29,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:36:29,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331785722] [2024-11-23 22:36:29,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331785722] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:36:29,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [369482065] [2024-11-23 22:36:29,626 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:29,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:36:29,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd074848-e0a8-4359-88e3-2246cf18529b/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:36:29,628 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd074848-e0a8-4359-88e3-2246cf18529b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:36:29,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd074848-e0a8-4359-88e3-2246cf18529b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-23 22:36:29,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:29,774 INFO L256 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-23 22:36:29,777 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:36:31,144 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:36:31,144 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 22:36:32,915 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:36:32,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [369482065] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 22:36:32,915 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 22:36:32,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 16, 15] total 37 [2024-11-23 22:36:32,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752807327] [2024-11-23 22:36:32,915 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 22:36:32,916 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-23 22:36:32,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:36:32,916 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-23 22:36:32,917 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=1188, Unknown=0, NotChecked=0, Total=1332 [2024-11-23 22:36:32,917 INFO L87 Difference]: Start difference. First operand 4951 states and 6885 transitions. Second operand has 37 states, 37 states have (on average 4.45945945945946) internal successors, (165), 37 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:36:37,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:36:37,779 INFO L93 Difference]: Finished difference Result 16428 states and 21085 transitions. [2024-11-23 22:36:37,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-11-23 22:36:37,779 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 4.45945945945946) internal successors, (165), 37 states have internal predecessors, (165), 0 states have call successors, (0), 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 63 [2024-11-23 22:36:37,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:36:37,803 INFO L225 Difference]: With dead ends: 16428 [2024-11-23 22:36:37,803 INFO L226 Difference]: Without dead ends: 13950 [2024-11-23 22:36:37,810 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1863 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=1214, Invalid=6268, Unknown=0, NotChecked=0, Total=7482 [2024-11-23 22:36:37,811 INFO L435 NwaCegarLoop]: 1505 mSDtfsCounter, 14707 mSDsluCounter, 15541 mSDsCounter, 0 mSdLazyCounter, 1078 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14707 SdHoareTripleChecker+Valid, 17046 SdHoareTripleChecker+Invalid, 1141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 1078 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-23 22:36:37,814 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14707 Valid, 17046 Invalid, 1141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 1078 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-23 22:36:37,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13950 states. [2024-11-23 22:36:38,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13950 to 7537. [2024-11-23 22:36:38,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7537 states, 7535 states have (on average 1.327803583278036) internal successors, (10005), 7536 states have internal predecessors, (10005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:36:38,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7537 states to 7537 states and 10005 transitions. [2024-11-23 22:36:38,242 INFO L78 Accepts]: Start accepts. Automaton has 7537 states and 10005 transitions. Word has length 63 [2024-11-23 22:36:38,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:36:38,242 INFO L471 AbstractCegarLoop]: Abstraction has 7537 states and 10005 transitions. [2024-11-23 22:36:38,243 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 4.45945945945946) internal successors, (165), 37 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:36:38,243 INFO L276 IsEmpty]: Start isEmpty. Operand 7537 states and 10005 transitions. [2024-11-23 22:36:38,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-23 22:36:38,244 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:36:38,244 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:36:38,254 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd074848-e0a8-4359-88e3-2246cf18529b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-23 22:36:38,448 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd074848-e0a8-4359-88e3-2246cf18529b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:36:38,449 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:36:38,451 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:36:38,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1827537694, now seen corresponding path program 1 times [2024-11-23 22:36:38,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:36:38,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555518961] [2024-11-23 22:36:38,452 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:38,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:36:38,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:40,602 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:36:40,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:36:40,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555518961] [2024-11-23 22:36:40,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555518961] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:36:40,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1339858507] [2024-11-23 22:36:40,603 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:40,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:36:40,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd074848-e0a8-4359-88e3-2246cf18529b/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:36:40,607 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd074848-e0a8-4359-88e3-2246cf18529b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:36:40,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd074848-e0a8-4359-88e3-2246cf18529b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-23 22:36:40,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:40,758 INFO L256 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-23 22:36:40,760 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:36:43,891 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:36:43,891 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 22:36:46,762 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:36:46,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1339858507] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 22:36:46,763 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 22:36:46,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 22, 19] total 57 [2024-11-23 22:36:46,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881251504] [2024-11-23 22:36:46,763 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 22:36:46,763 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2024-11-23 22:36:46,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:36:46,764 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2024-11-23 22:36:46,765 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=297, Invalid=2895, Unknown=0, NotChecked=0, Total=3192 [2024-11-23 22:36:46,765 INFO L87 Difference]: Start difference. First operand 7537 states and 10005 transitions. Second operand has 57 states, 57 states have (on average 3.0) internal successors, (171), 57 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:37:05,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:37:05,871 INFO L93 Difference]: Finished difference Result 17607 states and 22340 transitions. [2024-11-23 22:37:05,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2024-11-23 22:37:05,871 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 3.0) internal successors, (171), 57 states have internal predecessors, (171), 0 states have call successors, (0), 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 64 [2024-11-23 22:37:05,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:37:05,890 INFO L225 Difference]: With dead ends: 17607 [2024-11-23 22:37:05,890 INFO L226 Difference]: Without dead ends: 13774 [2024-11-23 22:37:05,898 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5950 ImplicationChecksByTransitivity, 19.1s TimeCoverageRelationStatistics Valid=3566, Invalid=17314, Unknown=0, NotChecked=0, Total=20880 [2024-11-23 22:37:05,899 INFO L435 NwaCegarLoop]: 1508 mSDtfsCounter, 31388 mSDsluCounter, 32437 mSDsCounter, 0 mSdLazyCounter, 2488 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31388 SdHoareTripleChecker+Valid, 33945 SdHoareTripleChecker+Invalid, 2622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 2488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-23 22:37:05,899 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [31388 Valid, 33945 Invalid, 2622 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [134 Valid, 2488 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-23 22:37:05,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13774 states. [2024-11-23 22:37:06,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13774 to 7973. [2024-11-23 22:37:06,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7973 states, 7971 states have (on average 1.3214151298456907) internal successors, (10533), 7972 states have internal predecessors, (10533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:37:06,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7973 states to 7973 states and 10533 transitions. [2024-11-23 22:37:06,338 INFO L78 Accepts]: Start accepts. Automaton has 7973 states and 10533 transitions. Word has length 64 [2024-11-23 22:37:06,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:37:06,339 INFO L471 AbstractCegarLoop]: Abstraction has 7973 states and 10533 transitions. [2024-11-23 22:37:06,339 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 3.0) internal successors, (171), 57 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:37:06,339 INFO L276 IsEmpty]: Start isEmpty. Operand 7973 states and 10533 transitions. [2024-11-23 22:37:06,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-23 22:37:06,340 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:37:06,340 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:37:06,350 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd074848-e0a8-4359-88e3-2246cf18529b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-23 22:37:06,540 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd074848-e0a8-4359-88e3-2246cf18529b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:37:06,541 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:37:06,542 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:37:06,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1994217637, now seen corresponding path program 1 times [2024-11-23 22:37:06,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:37:06,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249864491] [2024-11-23 22:37:06,542 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:37:06,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:37:06,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:37:07,287 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:37:07,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:37:07,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249864491] [2024-11-23 22:37:07,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249864491] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:37:07,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [36031811] [2024-11-23 22:37:07,288 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:37:07,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:37:07,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd074848-e0a8-4359-88e3-2246cf18529b/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:37:07,290 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd074848-e0a8-4359-88e3-2246cf18529b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:37:07,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd074848-e0a8-4359-88e3-2246cf18529b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-23 22:37:07,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:37:07,434 INFO L256 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-23 22:37:07,436 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:37:08,290 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:37:08,291 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 22:37:09,426 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:37:09,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [36031811] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 22:37:09,426 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 22:37:09,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 33 [2024-11-23 22:37:09,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897124491] [2024-11-23 22:37:09,426 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 22:37:09,427 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-23 22:37:09,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:37:09,427 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-23 22:37:09,428 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=934, Unknown=0, NotChecked=0, Total=1056 [2024-11-23 22:37:09,428 INFO L87 Difference]: Start difference. First operand 7973 states and 10533 transitions. Second operand has 33 states, 33 states have (on average 4.818181818181818) internal successors, (159), 33 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:37:12,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:37:12,305 INFO L93 Difference]: Finished difference Result 17326 states and 22164 transitions. [2024-11-23 22:37:12,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-23 22:37:12,306 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.818181818181818) internal successors, (159), 33 states have internal predecessors, (159), 0 states have call successors, (0), 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 65 [2024-11-23 22:37:12,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:37:12,321 INFO L225 Difference]: With dead ends: 17326 [2024-11-23 22:37:12,322 INFO L226 Difference]: Without dead ends: 14970 [2024-11-23 22:37:12,325 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 567 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=580, Invalid=2390, Unknown=0, NotChecked=0, Total=2970 [2024-11-23 22:37:12,327 INFO L435 NwaCegarLoop]: 1495 mSDtfsCounter, 13594 mSDsluCounter, 15325 mSDsCounter, 0 mSdLazyCounter, 878 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13594 SdHoareTripleChecker+Valid, 16820 SdHoareTripleChecker+Invalid, 921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 878 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-23 22:37:12,327 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13594 Valid, 16820 Invalid, 921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 878 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-23 22:37:12,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14970 states. [2024-11-23 22:37:12,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14970 to 7680. [2024-11-23 22:37:12,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7680 states, 7678 states have (on average 1.3263870799687418) internal successors, (10184), 7679 states have internal predecessors, (10184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:37:12,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7680 states to 7680 states and 10184 transitions. [2024-11-23 22:37:12,793 INFO L78 Accepts]: Start accepts. Automaton has 7680 states and 10184 transitions. Word has length 65 [2024-11-23 22:37:12,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:37:12,793 INFO L471 AbstractCegarLoop]: Abstraction has 7680 states and 10184 transitions. [2024-11-23 22:37:12,793 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.818181818181818) internal successors, (159), 33 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:37:12,794 INFO L276 IsEmpty]: Start isEmpty. Operand 7680 states and 10184 transitions. [2024-11-23 22:37:12,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-23 22:37:12,797 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:37:12,797 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:37:12,807 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd074848-e0a8-4359-88e3-2246cf18529b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-23 22:37:12,997 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd074848-e0a8-4359-88e3-2246cf18529b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:37:12,998 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:37:12,998 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:37:12,998 INFO L85 PathProgramCache]: Analyzing trace with hash 260849486, now seen corresponding path program 1 times [2024-11-23 22:37:12,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:37:12,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951590387] [2024-11-23 22:37:12,998 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:37:12,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:37:13,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:37:14,117 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 35 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:37:14,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:37:14,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951590387] [2024-11-23 22:37:14,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951590387] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:37:14,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1276751217] [2024-11-23 22:37:14,117 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:37:14,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:37:14,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd074848-e0a8-4359-88e3-2246cf18529b/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:37:14,119 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd074848-e0a8-4359-88e3-2246cf18529b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:37:14,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd074848-e0a8-4359-88e3-2246cf18529b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-23 22:37:14,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:37:14,256 INFO L256 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-23 22:37:14,258 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:37:15,489 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 21 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:37:15,489 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 22:37:17,498 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 17 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:37:17,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1276751217] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 22:37:17,498 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 22:37:17,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 16] total 44 [2024-11-23 22:37:17,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222652832] [2024-11-23 22:37:17,499 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 22:37:17,499 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-23 22:37:17,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:37:17,500 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-23 22:37:17,501 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=1734, Unknown=0, NotChecked=0, Total=1892 [2024-11-23 22:37:17,501 INFO L87 Difference]: Start difference. First operand 7680 states and 10184 transitions. Second operand has 44 states, 44 states have (on average 6.5227272727272725) internal successors, (287), 44 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) [2024-11-23 22:37:26,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:37:26,057 INFO L93 Difference]: Finished difference Result 14472 states and 18550 transitions. [2024-11-23 22:37:26,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2024-11-23 22:37:26,058 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 6.5227272727272725) internal successors, (287), 44 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 104 [2024-11-23 22:37:26,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:37:26,066 INFO L225 Difference]: With dead ends: 14472 [2024-11-23 22:37:26,066 INFO L226 Difference]: Without dead ends: 10772 [2024-11-23 22:37:26,070 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3274 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=1932, Invalid=9840, Unknown=0, NotChecked=0, Total=11772 [2024-11-23 22:37:26,071 INFO L435 NwaCegarLoop]: 1537 mSDtfsCounter, 23200 mSDsluCounter, 25067 mSDsCounter, 0 mSdLazyCounter, 2210 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23200 SdHoareTripleChecker+Valid, 26604 SdHoareTripleChecker+Invalid, 2272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 2210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-23 22:37:26,071 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23200 Valid, 26604 Invalid, 2272 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [62 Valid, 2210 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-23 22:37:26,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10772 states. [2024-11-23 22:37:26,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10772 to 8766. [2024-11-23 22:37:26,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8766 states, 8764 states have (on average 1.312186216339571) internal successors, (11500), 8765 states have internal predecessors, (11500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:37:26,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8766 states to 8766 states and 11500 transitions. [2024-11-23 22:37:26,596 INFO L78 Accepts]: Start accepts. Automaton has 8766 states and 11500 transitions. Word has length 104 [2024-11-23 22:37:26,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:37:26,596 INFO L471 AbstractCegarLoop]: Abstraction has 8766 states and 11500 transitions. [2024-11-23 22:37:26,596 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 6.5227272727272725) internal successors, (287), 44 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) [2024-11-23 22:37:26,596 INFO L276 IsEmpty]: Start isEmpty. Operand 8766 states and 11500 transitions. [2024-11-23 22:37:26,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-23 22:37:26,598 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:37:26,598 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:37:26,606 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd074848-e0a8-4359-88e3-2246cf18529b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-23 22:37:26,798 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd074848-e0a8-4359-88e3-2246cf18529b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-23 22:37:26,798 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:37:26,799 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:37:26,799 INFO L85 PathProgramCache]: Analyzing trace with hash 2075020846, now seen corresponding path program 1 times [2024-11-23 22:37:26,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:37:26,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806497916] [2024-11-23 22:37:26,799 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:37:26,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:37:26,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:37:28,015 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 16 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:37:28,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:37:28,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806497916] [2024-11-23 22:37:28,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806497916] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:37:28,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1546726924] [2024-11-23 22:37:28,016 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:37:28,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:37:28,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd074848-e0a8-4359-88e3-2246cf18529b/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:37:28,019 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd074848-e0a8-4359-88e3-2246cf18529b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:37:28,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd074848-e0a8-4359-88e3-2246cf18529b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-23 22:37:28,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:37:28,213 INFO L256 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-23 22:37:28,221 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:37:32,479 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 33 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:37:32,479 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 22:37:39,476 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 33 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:37:39,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1546726924] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 22:37:39,476 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 22:37:39,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 25, 24] total 61 [2024-11-23 22:37:39,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443221235] [2024-11-23 22:37:39,476 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 22:37:39,477 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2024-11-23 22:37:39,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:37:39,477 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2024-11-23 22:37:39,478 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=349, Invalid=3311, Unknown=0, NotChecked=0, Total=3660 [2024-11-23 22:37:39,478 INFO L87 Difference]: Start difference. First operand 8766 states and 11500 transitions. Second operand has 61 states, 61 states have (on average 4.688524590163935) internal successors, (286), 61 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) [2024-11-23 22:39:00,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:39:00,801 INFO L93 Difference]: Finished difference Result 20560 states and 25951 transitions. [2024-11-23 22:39:00,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 201 states. [2024-11-23 22:39:00,802 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 4.688524590163935) internal successors, (286), 61 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 104 [2024-11-23 22:39:00,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:39:00,812 INFO L225 Difference]: With dead ends: 20560 [2024-11-23 22:39:00,812 INFO L226 Difference]: Without dead ends: 15535 [2024-11-23 22:39:00,820 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 258 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26103 ImplicationChecksByTransitivity, 78.1s TimeCoverageRelationStatistics Valid=10928, Invalid=56412, Unknown=0, NotChecked=0, Total=67340 [2024-11-23 22:39:00,821 INFO L435 NwaCegarLoop]: 1679 mSDtfsCounter, 25285 mSDsluCounter, 34249 mSDsCounter, 0 mSdLazyCounter, 4612 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25285 SdHoareTripleChecker+Valid, 35928 SdHoareTripleChecker+Invalid, 4742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 4612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2024-11-23 22:39:00,821 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25285 Valid, 35928 Invalid, 4742 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [130 Valid, 4612 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2024-11-23 22:39:00,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15535 states. [2024-11-23 22:39:01,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15535 to 12311. [2024-11-23 22:39:01,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12311 states, 12309 states have (on average 1.2831261678446666) internal successors, (15794), 12310 states have internal predecessors, (15794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:39:01,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12311 states to 12311 states and 15794 transitions. [2024-11-23 22:39:01,860 INFO L78 Accepts]: Start accepts. Automaton has 12311 states and 15794 transitions. Word has length 104 [2024-11-23 22:39:01,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:39:01,860 INFO L471 AbstractCegarLoop]: Abstraction has 12311 states and 15794 transitions. [2024-11-23 22:39:01,860 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 4.688524590163935) internal successors, (286), 61 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) [2024-11-23 22:39:01,860 INFO L276 IsEmpty]: Start isEmpty. Operand 12311 states and 15794 transitions. [2024-11-23 22:39:01,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-23 22:39:01,863 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:39:01,863 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:39:01,873 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd074848-e0a8-4359-88e3-2246cf18529b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-23 22:39:02,067 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd074848-e0a8-4359-88e3-2246cf18529b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-23 22:39:02,067 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:39:02,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:39:02,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1449418917, now seen corresponding path program 1 times [2024-11-23 22:39:02,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:39:02,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122097331] [2024-11-23 22:39:02,068 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:39:02,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:39:02,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:39:03,484 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 16 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:39:03,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:39:03,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122097331] [2024-11-23 22:39:03,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122097331] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:39:03,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1934146149] [2024-11-23 22:39:03,485 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:39:03,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:39:03,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd074848-e0a8-4359-88e3-2246cf18529b/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:39:03,487 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd074848-e0a8-4359-88e3-2246cf18529b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:39:03,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd074848-e0a8-4359-88e3-2246cf18529b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-23 22:39:03,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:39:03,636 INFO L256 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-11-23 22:39:03,639 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:39:07,477 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 26 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:39:07,477 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 22:39:17,550 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 16 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:39:17,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1934146149] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 22:39:17,550 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 22:39:17,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 27, 24] total 69 [2024-11-23 22:39:17,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435729539] [2024-11-23 22:39:17,551 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 22:39:17,551 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2024-11-23 22:39:17,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:39:17,552 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2024-11-23 22:39:17,552 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=532, Invalid=4160, Unknown=0, NotChecked=0, Total=4692 [2024-11-23 22:39:17,553 INFO L87 Difference]: Start difference. First operand 12311 states and 15794 transitions. Second operand has 69 states, 69 states have (on average 4.3478260869565215) internal successors, (300), 69 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:40:02,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:40:02,367 INFO L93 Difference]: Finished difference Result 16584 states and 21018 transitions. [2024-11-23 22:40:02,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2024-11-23 22:40:02,368 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 4.3478260869565215) internal successors, (300), 69 states have internal predecessors, (300), 0 states have call successors, (0), 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 105 [2024-11-23 22:40:02,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:40:02,382 INFO L225 Difference]: With dead ends: 16584 [2024-11-23 22:40:02,382 INFO L226 Difference]: Without dead ends: 12992 [2024-11-23 22:40:02,387 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 163 SyntacticMatches, 1 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7003 ImplicationChecksByTransitivity, 45.3s TimeCoverageRelationStatistics Valid=4167, Invalid=20013, Unknown=0, NotChecked=0, Total=24180 [2024-11-23 22:40:02,388 INFO L435 NwaCegarLoop]: 1501 mSDtfsCounter, 33596 mSDsluCounter, 31943 mSDsCounter, 0 mSdLazyCounter, 2201 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33596 SdHoareTripleChecker+Valid, 33444 SdHoareTripleChecker+Invalid, 2350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 2201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-23 22:40:02,388 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [33596 Valid, 33444 Invalid, 2350 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [149 Valid, 2201 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-23 22:40:02,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12992 states. [2024-11-23 22:40:03,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12992 to 12822. [2024-11-23 22:40:03,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12822 states, 12820 states have (on average 1.2776911076443058) internal successors, (16380), 12821 states have internal predecessors, (16380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:40:03,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12822 states to 12822 states and 16380 transitions. [2024-11-23 22:40:03,336 INFO L78 Accepts]: Start accepts. Automaton has 12822 states and 16380 transitions. Word has length 105 [2024-11-23 22:40:03,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:40:03,337 INFO L471 AbstractCegarLoop]: Abstraction has 12822 states and 16380 transitions. [2024-11-23 22:40:03,337 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 4.3478260869565215) internal successors, (300), 69 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:40:03,337 INFO L276 IsEmpty]: Start isEmpty. Operand 12822 states and 16380 transitions. [2024-11-23 22:40:03,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-23 22:40:03,339 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:40:03,339 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:40:03,348 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd074848-e0a8-4359-88e3-2246cf18529b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-23 22:40:03,543 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd074848-e0a8-4359-88e3-2246cf18529b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-23 22:40:03,543 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:40:03,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:40:03,544 INFO L85 PathProgramCache]: Analyzing trace with hash 886549339, now seen corresponding path program 1 times [2024-11-23 22:40:03,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:40:03,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662631681] [2024-11-23 22:40:03,544 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:40:03,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:40:03,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:40:04,481 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 16 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:40:04,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:40:04,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662631681] [2024-11-23 22:40:04,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662631681] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:40:04,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1713852931] [2024-11-23 22:40:04,482 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:40:04,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:40:04,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd074848-e0a8-4359-88e3-2246cf18529b/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:40:04,483 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd074848-e0a8-4359-88e3-2246cf18529b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:40:04,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd074848-e0a8-4359-88e3-2246cf18529b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-23 22:40:04,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:40:04,621 INFO L256 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 61 conjuncts are in the unsatisfiable core [2024-11-23 22:40:04,624 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:40:07,855 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 25 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:40:07,855 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 22:40:15,628 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 16 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:40:15,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1713852931] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 22:40:15,628 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 22:40:15,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 26, 23] total 65 [2024-11-23 22:40:15,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527972363] [2024-11-23 22:40:15,629 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 22:40:15,629 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2024-11-23 22:40:15,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:40:15,630 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2024-11-23 22:40:15,630 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=341, Invalid=3819, Unknown=0, NotChecked=0, Total=4160 [2024-11-23 22:40:15,630 INFO L87 Difference]: Start difference. First operand 12822 states and 16380 transitions. Second operand has 65 states, 65 states have (on average 4.615384615384615) internal successors, (300), 65 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:43:23,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:43:23,574 INFO L93 Difference]: Finished difference Result 35142 states and 44042 transitions. [2024-11-23 22:43:23,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 275 states. [2024-11-23 22:43:23,575 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 4.615384615384615) internal successors, (300), 65 states have internal predecessors, (300), 0 states have call successors, (0), 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 105 [2024-11-23 22:43:23,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:43:23,598 INFO L225 Difference]: With dead ends: 35142 [2024-11-23 22:43:23,598 INFO L226 Difference]: Without dead ends: 30316 [2024-11-23 22:43:23,607 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 497 GetRequests, 164 SyntacticMatches, 1 SemanticMatches, 332 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41894 ImplicationChecksByTransitivity, 182.1s TimeCoverageRelationStatistics Valid=13020, Invalid=98202, Unknown=0, NotChecked=0, Total=111222 [2024-11-23 22:43:23,607 INFO L435 NwaCegarLoop]: 1558 mSDtfsCounter, 23655 mSDsluCounter, 37962 mSDsCounter, 0 mSdLazyCounter, 4762 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23655 SdHoareTripleChecker+Valid, 39520 SdHoareTripleChecker+Invalid, 4953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 4762 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2024-11-23 22:43:23,607 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23655 Valid, 39520 Invalid, 4953 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [191 Valid, 4762 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2024-11-23 22:43:23,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30316 states. [2024-11-23 22:43:25,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30316 to 19198. [2024-11-23 22:43:25,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19198 states, 19196 states have (on average 1.26093977912065) internal successors, (24205), 19197 states have internal predecessors, (24205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:43:25,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19198 states to 19198 states and 24205 transitions. [2024-11-23 22:43:25,608 INFO L78 Accepts]: Start accepts. Automaton has 19198 states and 24205 transitions. Word has length 105 [2024-11-23 22:43:25,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:43:25,609 INFO L471 AbstractCegarLoop]: Abstraction has 19198 states and 24205 transitions. [2024-11-23 22:43:25,609 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 4.615384615384615) internal successors, (300), 65 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:43:25,609 INFO L276 IsEmpty]: Start isEmpty. Operand 19198 states and 24205 transitions. [2024-11-23 22:43:25,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-23 22:43:25,611 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:43:25,612 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:43:25,626 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd074848-e0a8-4359-88e3-2246cf18529b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-23 22:43:25,812 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd074848-e0a8-4359-88e3-2246cf18529b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:43:25,812 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:43:25,812 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:43:25,813 INFO L85 PathProgramCache]: Analyzing trace with hash -1118181688, now seen corresponding path program 1 times [2024-11-23 22:43:25,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:43:25,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625777701] [2024-11-23 22:43:25,813 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:43:25,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:43:25,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:43:27,917 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 31 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:43:27,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:43:27,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625777701] [2024-11-23 22:43:27,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625777701] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:43:27,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1281220637] [2024-11-23 22:43:27,917 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:43:27,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:43:27,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd074848-e0a8-4359-88e3-2246cf18529b/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:43:27,919 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd074848-e0a8-4359-88e3-2246cf18529b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:43:27,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd074848-e0a8-4359-88e3-2246cf18529b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-23 22:43:28,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:43:28,081 INFO L256 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-23 22:43:28,084 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:43:30,912 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 31 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:43:30,912 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 22:43:37,230 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 31 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:43:37,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1281220637] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 22:43:37,230 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 22:43:37,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 22, 19] total 64 [2024-11-23 22:43:37,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494707182] [2024-11-23 22:43:37,230 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 22:43:37,231 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-11-23 22:43:37,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:43:37,232 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-11-23 22:43:37,232 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=308, Invalid=3724, Unknown=0, NotChecked=0, Total=4032 [2024-11-23 22:43:37,233 INFO L87 Difference]: Start difference. First operand 19198 states and 24205 transitions. Second operand has 64 states, 64 states have (on average 4.515625) internal successors, (289), 64 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:44:29,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:44:29,123 INFO L93 Difference]: Finished difference Result 43579 states and 54020 transitions. [2024-11-23 22:44:29,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2024-11-23 22:44:29,123 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 4.515625) internal successors, (289), 64 states have internal predecessors, (289), 0 states have call successors, (0), 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 106 [2024-11-23 22:44:29,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:44:29,148 INFO L225 Difference]: With dead ends: 43579 [2024-11-23 22:44:29,148 INFO L226 Difference]: Without dead ends: 27903 [2024-11-23 22:44:29,159 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 381 GetRequests, 173 SyntacticMatches, 2 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13755 ImplicationChecksByTransitivity, 47.2s TimeCoverageRelationStatistics Valid=6195, Invalid=36861, Unknown=0, NotChecked=0, Total=43056 [2024-11-23 22:44:29,159 INFO L435 NwaCegarLoop]: 1574 mSDtfsCounter, 30496 mSDsluCounter, 35930 mSDsCounter, 0 mSdLazyCounter, 3909 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30496 SdHoareTripleChecker+Valid, 37504 SdHoareTripleChecker+Invalid, 4072 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 3909 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2024-11-23 22:44:29,160 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30496 Valid, 37504 Invalid, 4072 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [163 Valid, 3909 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2024-11-23 22:44:29,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27903 states. [2024-11-23 22:44:32,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27903 to 25184. [2024-11-23 22:44:32,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25184 states, 25182 states have (on average 1.2522039552060995) internal successors, (31533), 25183 states have internal predecessors, (31533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:44:32,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25184 states to 25184 states and 31533 transitions. [2024-11-23 22:44:32,307 INFO L78 Accepts]: Start accepts. Automaton has 25184 states and 31533 transitions. Word has length 106 [2024-11-23 22:44:32,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:44:32,308 INFO L471 AbstractCegarLoop]: Abstraction has 25184 states and 31533 transitions. [2024-11-23 22:44:32,308 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 4.515625) internal successors, (289), 64 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:44:32,308 INFO L276 IsEmpty]: Start isEmpty. Operand 25184 states and 31533 transitions. [2024-11-23 22:44:32,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-23 22:44:32,310 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:44:32,310 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:44:32,323 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd074848-e0a8-4359-88e3-2246cf18529b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-23 22:44:32,511 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd074848-e0a8-4359-88e3-2246cf18529b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:44:32,511 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:44:32,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:44:32,511 INFO L85 PathProgramCache]: Analyzing trace with hash -667025751, now seen corresponding path program 1 times [2024-11-23 22:44:32,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:44:32,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515896017] [2024-11-23 22:44:32,512 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:44:32,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:44:32,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:44:35,514 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 31 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:44:35,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:44:35,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515896017] [2024-11-23 22:44:35,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515896017] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:44:35,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1599896812] [2024-11-23 22:44:35,515 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:44:35,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:44:35,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd074848-e0a8-4359-88e3-2246cf18529b/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:44:35,518 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd074848-e0a8-4359-88e3-2246cf18529b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:44:35,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd074848-e0a8-4359-88e3-2246cf18529b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-23 22:44:35,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:44:35,688 INFO L256 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-23 22:44:35,691 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:44:38,395 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 27 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:44:38,396 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 22:44:41,269 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 23 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:44:41,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1599896812] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 22:44:41,270 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 22:44:41,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 17, 16] total 58 [2024-11-23 22:44:41,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704628705] [2024-11-23 22:44:41,270 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 22:44:41,271 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2024-11-23 22:44:41,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:44:41,272 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2024-11-23 22:44:41,272 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=238, Invalid=3068, Unknown=0, NotChecked=0, Total=3306 [2024-11-23 22:44:41,272 INFO L87 Difference]: Start difference. First operand 25184 states and 31533 transitions. Second operand has 58 states, 58 states have (on average 5.224137931034483) internal successors, (303), 58 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:45:09,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:45:09,679 INFO L93 Difference]: Finished difference Result 56097 states and 69751 transitions. [2024-11-23 22:45:09,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2024-11-23 22:45:09,679 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 5.224137931034483) internal successors, (303), 58 states have internal predecessors, (303), 0 states have call successors, (0), 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 107 [2024-11-23 22:45:09,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:45:09,718 INFO L225 Difference]: With dead ends: 56097 [2024-11-23 22:45:09,718 INFO L226 Difference]: Without dead ends: 37917 [2024-11-23 22:45:09,733 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9861 ImplicationChecksByTransitivity, 23.2s TimeCoverageRelationStatistics Valid=4658, Invalid=28648, Unknown=0, NotChecked=0, Total=33306 [2024-11-23 22:45:09,734 INFO L435 NwaCegarLoop]: 1543 mSDtfsCounter, 33593 mSDsluCounter, 32084 mSDsCounter, 0 mSdLazyCounter, 3128 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33593 SdHoareTripleChecker+Valid, 33627 SdHoareTripleChecker+Invalid, 3254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 3128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-11-23 22:45:09,735 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [33593 Valid, 33627 Invalid, 3254 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [126 Valid, 3128 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-11-23 22:45:09,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37917 states. [2024-11-23 22:45:14,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37917 to 36621. [2024-11-23 22:45:14,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36621 states, 36619 states have (on average 1.2553319315109643) internal successors, (45969), 36620 states have internal predecessors, (45969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:45:14,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36621 states to 36621 states and 45969 transitions. [2024-11-23 22:45:14,984 INFO L78 Accepts]: Start accepts. Automaton has 36621 states and 45969 transitions. Word has length 107 [2024-11-23 22:45:14,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:45:14,984 INFO L471 AbstractCegarLoop]: Abstraction has 36621 states and 45969 transitions. [2024-11-23 22:45:14,984 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 5.224137931034483) internal successors, (303), 58 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:45:14,985 INFO L276 IsEmpty]: Start isEmpty. Operand 36621 states and 45969 transitions. [2024-11-23 22:45:14,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-11-23 22:45:14,987 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:45:14,987 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:45:15,001 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd074848-e0a8-4359-88e3-2246cf18529b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-23 22:45:15,187 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd074848-e0a8-4359-88e3-2246cf18529b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-23 22:45:15,188 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:45:15,188 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:45:15,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1286141199, now seen corresponding path program 1 times [2024-11-23 22:45:15,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:45:15,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140490835] [2024-11-23 22:45:15,188 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:45:15,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:45:15,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:45:17,721 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 23 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:45:17,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:45:17,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140490835] [2024-11-23 22:45:17,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140490835] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:45:17,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756920075] [2024-11-23 22:45:17,722 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:45:17,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:45:17,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd074848-e0a8-4359-88e3-2246cf18529b/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:45:17,723 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd074848-e0a8-4359-88e3-2246cf18529b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:45:17,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd074848-e0a8-4359-88e3-2246cf18529b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-23 22:45:17,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:45:17,875 INFO L256 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-23 22:45:17,878 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:45:19,129 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 53 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:45:19,129 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 22:45:21,233 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 43 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:45:21,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [756920075] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 22:45:21,233 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 22:45:21,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 13, 12] total 48 [2024-11-23 22:45:21,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387516928] [2024-11-23 22:45:21,233 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 22:45:21,234 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-11-23 22:45:21,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:45:21,234 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-11-23 22:45:21,235 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=2072, Unknown=0, NotChecked=0, Total=2256 [2024-11-23 22:45:21,235 INFO L87 Difference]: Start difference. First operand 36621 states and 45969 transitions. Second operand has 48 states, 48 states have (on average 6.166666666666667) internal successors, (296), 48 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:45:35,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:45:35,874 INFO L93 Difference]: Finished difference Result 84741 states and 105479 transitions. [2024-11-23 22:45:35,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-11-23 22:45:35,875 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 6.166666666666667) internal successors, (296), 48 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2024-11-23 22:45:35,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:45:35,938 INFO L225 Difference]: With dead ends: 84741 [2024-11-23 22:45:35,938 INFO L226 Difference]: Without dead ends: 56839 [2024-11-23 22:45:35,952 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1772 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=1675, Invalid=7255, Unknown=0, NotChecked=0, Total=8930 [2024-11-23 22:45:35,953 INFO L435 NwaCegarLoop]: 1587 mSDtfsCounter, 27218 mSDsluCounter, 24077 mSDsCounter, 0 mSdLazyCounter, 2295 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27218 SdHoareTripleChecker+Valid, 25664 SdHoareTripleChecker+Invalid, 2358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 2295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-23 22:45:35,953 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27218 Valid, 25664 Invalid, 2358 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [63 Valid, 2295 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-23 22:45:35,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56839 states. [2024-11-23 22:45:44,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56839 to 49783. [2024-11-23 22:45:44,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49783 states, 49781 states have (on average 1.2369779634800426) internal successors, (61578), 49782 states have internal predecessors, (61578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:45:44,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49783 states to 49783 states and 61578 transitions. [2024-11-23 22:45:44,765 INFO L78 Accepts]: Start accepts. Automaton has 49783 states and 61578 transitions. Word has length 109 [2024-11-23 22:45:44,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:45:44,765 INFO L471 AbstractCegarLoop]: Abstraction has 49783 states and 61578 transitions. [2024-11-23 22:45:44,765 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 6.166666666666667) internal successors, (296), 48 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:45:44,765 INFO L276 IsEmpty]: Start isEmpty. Operand 49783 states and 61578 transitions. [2024-11-23 22:45:44,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-23 22:45:44,767 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:45:44,767 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:45:44,775 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd074848-e0a8-4359-88e3-2246cf18529b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-23 22:45:44,967 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd074848-e0a8-4359-88e3-2246cf18529b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-23 22:45:44,968 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:45:44,968 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:45:44,968 INFO L85 PathProgramCache]: Analyzing trace with hash 252592076, now seen corresponding path program 1 times [2024-11-23 22:45:44,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:45:44,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301111583] [2024-11-23 22:45:44,969 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:45:44,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:45:45,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:45:46,666 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 32 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:45:46,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:45:46,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301111583] [2024-11-23 22:45:46,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301111583] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:45:46,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1528919024] [2024-11-23 22:45:46,667 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:45:46,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:45:46,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd074848-e0a8-4359-88e3-2246cf18529b/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:45:46,670 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd074848-e0a8-4359-88e3-2246cf18529b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:45:46,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd074848-e0a8-4359-88e3-2246cf18529b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-23 22:45:46,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:45:46,887 INFO L256 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 68 conjuncts are in the unsatisfiable core [2024-11-23 22:45:46,890 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:45:50,977 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 63 proven. 7 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-23 22:45:50,977 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 22:46:07,920 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 32 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:46:07,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1528919024] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 22:46:07,920 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 22:46:07,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 34] total 74 [2024-11-23 22:46:07,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148855127] [2024-11-23 22:46:07,920 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 22:46:07,921 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2024-11-23 22:46:07,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:46:07,922 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2024-11-23 22:46:07,922 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=579, Invalid=4823, Unknown=0, NotChecked=0, Total=5402 [2024-11-23 22:46:07,923 INFO L87 Difference]: Start difference. First operand 49783 states and 61578 transitions. Second operand has 74 states, 74 states have (on average 3.7567567567567566) internal successors, (278), 74 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:49:02,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:49:02,801 INFO L93 Difference]: Finished difference Result 103391 states and 126199 transitions. [2024-11-23 22:49:02,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 243 states. [2024-11-23 22:49:02,802 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 3.7567567567567566) internal successors, (278), 74 states have internal predecessors, (278), 0 states have call successors, (0), 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 110 [2024-11-23 22:49:02,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:49:02,895 INFO L225 Difference]: With dead ends: 103391 [2024-11-23 22:49:02,895 INFO L226 Difference]: Without dead ends: 81770 [2024-11-23 22:49:02,918 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 482 GetRequests, 167 SyntacticMatches, 2 SemanticMatches, 313 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41008 ImplicationChecksByTransitivity, 159.6s TimeCoverageRelationStatistics Valid=16171, Invalid=82739, Unknown=0, NotChecked=0, Total=98910 [2024-11-23 22:49:02,918 INFO L435 NwaCegarLoop]: 1528 mSDtfsCounter, 36236 mSDsluCounter, 31933 mSDsCounter, 0 mSdLazyCounter, 3398 mSolverCounterSat, 280 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36236 SdHoareTripleChecker+Valid, 33461 SdHoareTripleChecker+Invalid, 3678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 280 IncrementalHoareTripleChecker+Valid, 3398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2024-11-23 22:49:02,919 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [36236 Valid, 33461 Invalid, 3678 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [280 Valid, 3398 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2024-11-23 22:49:02,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81770 states. [2024-11-23 22:49:10,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81770 to 49588. [2024-11-23 22:49:10,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49588 states, 49586 states have (on average 1.2372645504779576) internal successors, (61351), 49587 states have internal predecessors, (61351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:49:10,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49588 states to 49588 states and 61351 transitions. [2024-11-23 22:49:10,418 INFO L78 Accepts]: Start accepts. Automaton has 49588 states and 61351 transitions. Word has length 110 [2024-11-23 22:49:10,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:49:10,418 INFO L471 AbstractCegarLoop]: Abstraction has 49588 states and 61351 transitions. [2024-11-23 22:49:10,418 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 3.7567567567567566) internal successors, (278), 74 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:49:10,419 INFO L276 IsEmpty]: Start isEmpty. Operand 49588 states and 61351 transitions. [2024-11-23 22:49:10,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2024-11-23 22:49:10,420 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:49:10,420 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, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:49:10,429 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd074848-e0a8-4359-88e3-2246cf18529b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-23 22:49:10,621 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd074848-e0a8-4359-88e3-2246cf18529b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:49:10,621 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:49:10,621 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:49:10,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1746661205, now seen corresponding path program 1 times [2024-11-23 22:49:10,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:49:10,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801948121] [2024-11-23 22:49:10,622 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:49:10,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:49:10,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:49:10,785 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:49:10,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:49:10,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801948121] [2024-11-23 22:49:10,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801948121] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:49:10,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:49:10,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 22:49:10,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390845939] [2024-11-23 22:49:10,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:49:10,786 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 22:49:10,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:49:10,786 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 22:49:10,786 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-23 22:49:10,787 INFO L87 Difference]: Start difference. First operand 49588 states and 61351 transitions. Second operand has 4 states, 4 states have (on average 33.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:49:23,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:49:23,388 INFO L93 Difference]: Finished difference Result 53382 states and 67714 transitions. [2024-11-23 22:49:23,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 22:49:23,389 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 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 132 [2024-11-23 22:49:23,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:49:23,455 INFO L225 Difference]: With dead ends: 53382 [2024-11-23 22:49:23,455 INFO L226 Difference]: Without dead ends: 51090 [2024-11-23 22:49:23,466 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 [2024-11-23 22:49:23,466 INFO L435 NwaCegarLoop]: 744 mSDtfsCounter, 772 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 3095 mSolverCounterSat, 729 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 772 SdHoareTripleChecker+Valid, 828 SdHoareTripleChecker+Invalid, 3824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 729 IncrementalHoareTripleChecker+Valid, 3095 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2024-11-23 22:49:23,467 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [772 Valid, 828 Invalid, 3824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [729 Valid, 3095 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2024-11-23 22:49:23,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51090 states. [2024-11-23 22:49:30,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51090 to 50339. [2024-11-23 22:49:30,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50339 states, 50337 states have (on average 1.2337644277569184) internal successors, (62104), 50338 states have internal predecessors, (62104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:49:30,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50339 states to 50339 states and 62104 transitions. [2024-11-23 22:49:30,227 INFO L78 Accepts]: Start accepts. Automaton has 50339 states and 62104 transitions. Word has length 132 [2024-11-23 22:49:30,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:49:30,227 INFO L471 AbstractCegarLoop]: Abstraction has 50339 states and 62104 transitions. [2024-11-23 22:49:30,227 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:49:30,228 INFO L276 IsEmpty]: Start isEmpty. Operand 50339 states and 62104 transitions. [2024-11-23 22:49:30,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-23 22:49:30,232 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:49:30,233 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-23 22:49:30,233 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-11-23 22:49:30,233 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:49:30,233 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:49:30,234 INFO L85 PathProgramCache]: Analyzing trace with hash -811669857, now seen corresponding path program 1 times [2024-11-23 22:49:30,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:49:30,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773289398] [2024-11-23 22:49:30,234 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:49:30,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:49:30,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:49:31,650 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 67 proven. 186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:49:31,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:49:31,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773289398] [2024-11-23 22:49:31,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773289398] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:49:31,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1952589179] [2024-11-23 22:49:31,651 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:49:31,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:49:31,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd074848-e0a8-4359-88e3-2246cf18529b/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:49:31,653 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd074848-e0a8-4359-88e3-2246cf18529b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:49:31,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd074848-e0a8-4359-88e3-2246cf18529b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-23 22:49:31,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:49:31,833 INFO L256 TraceCheckSpWp]: Trace formula consists of 559 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-23 22:49:31,834 INFO L279 TraceCheckSpWp]: Computing forward predicates...