./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label03.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_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/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_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label03.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/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_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/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 eac7eb39c98aff4ef80806ab78ab5db437ac2c7b09e47bea802a0bba118466ba --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 00:17:39,959 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 00:17:40,050 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-24 00:17:40,064 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 00:17:40,064 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 00:17:40,104 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 00:17:40,106 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 00:17:40,106 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 00:17:40,107 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 00:17:40,107 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 00:17:40,108 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 00:17:40,108 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 00:17:40,109 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 00:17:40,109 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 00:17:40,109 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 00:17:40,110 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 00:17:40,110 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 00:17:40,110 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-24 00:17:40,110 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 00:17:40,110 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-24 00:17:40,111 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 00:17:40,111 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 00:17:40,111 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 00:17:40,111 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 00:17:40,111 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-24 00:17:40,111 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 00:17:40,111 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 00:17:40,112 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 00:17:40,112 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 00:17:40,112 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:17:40,112 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:17:40,112 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:17:40,112 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:17:40,112 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 00:17:40,112 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:17:40,112 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:17:40,113 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:17:40,113 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:17:40,113 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 00:17:40,113 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 00:17:40,113 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 00:17:40,113 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 00:17:40,113 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 00:17:40,113 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 00:17:40,113 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 00:17:40,113 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 00:17:40,113 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 00:17:40,114 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 00:17:40,114 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_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/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 -> eac7eb39c98aff4ef80806ab78ab5db437ac2c7b09e47bea802a0bba118466ba [2024-11-24 00:17:40,392 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 00:17:40,402 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 00:17:40,405 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 00:17:40,407 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 00:17:40,407 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 00:17:40,409 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label03.c [2024-11-24 00:17:43,311 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/data/5d4d4b320/157a46762d9e41eaa4bfb5f055fd42c7/FLAG339668543 [2024-11-24 00:17:43,888 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 00:17:43,890 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/sv-benchmarks/c/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label03.c [2024-11-24 00:17:43,927 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/data/5d4d4b320/157a46762d9e41eaa4bfb5f055fd42c7/FLAG339668543 [2024-11-24 00:17:44,383 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/data/5d4d4b320/157a46762d9e41eaa4bfb5f055fd42c7 [2024-11-24 00:17:44,385 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 00:17:44,386 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 00:17:44,388 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 00:17:44,388 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 00:17:44,392 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 00:17:44,392 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:17:44" (1/1) ... [2024-11-24 00:17:44,393 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@402018cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:17:44, skipping insertion in model container [2024-11-24 00:17:44,394 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:17:44" (1/1) ... [2024-11-24 00:17:44,508 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 00:17:44,865 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_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/sv-benchmarks/c/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label03.c[6450,6463] [2024-11-24 00:17:44,906 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_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/sv-benchmarks/c/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label03.c[8787,8800] [2024-11-24 00:17:45,783 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:17:45,800 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 00:17:45,836 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_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/sv-benchmarks/c/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label03.c[6450,6463] [2024-11-24 00:17:45,849 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_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/sv-benchmarks/c/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label03.c[8787,8800] [2024-11-24 00:17:46,392 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:17:46,430 INFO L204 MainTranslator]: Completed translation [2024-11-24 00:17:46,431 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:17:46 WrapperNode [2024-11-24 00:17:46,431 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 00:17:46,432 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 00:17:46,432 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 00:17:46,433 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 00:17:46,441 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:17:46" (1/1) ... [2024-11-24 00:17:46,522 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:17:46" (1/1) ... [2024-11-24 00:17:46,874 INFO L138 Inliner]: procedures = 35, calls = 20, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 4981 [2024-11-24 00:17:46,875 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 00:17:46,875 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 00:17:46,875 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 00:17:46,876 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 00:17:46,885 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:17:46" (1/1) ... [2024-11-24 00:17:46,885 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:17:46" (1/1) ... [2024-11-24 00:17:46,938 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:17:46" (1/1) ... [2024-11-24 00:17:47,229 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]. [2024-11-24 00:17:47,229 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:17:46" (1/1) ... [2024-11-24 00:17:47,229 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:17:46" (1/1) ... [2024-11-24 00:17:47,376 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:17:46" (1/1) ... [2024-11-24 00:17:47,392 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:17:46" (1/1) ... [2024-11-24 00:17:47,429 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:17:46" (1/1) ... [2024-11-24 00:17:47,452 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:17:46" (1/1) ... [2024-11-24 00:17:47,470 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:17:46" (1/1) ... [2024-11-24 00:17:47,521 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 00:17:47,523 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 00:17:47,523 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 00:17:47,523 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 00:17:47,524 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:17:46" (1/1) ... [2024-11-24 00:17:47,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:17:47,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:17:47,555 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 00:17:47,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 00:17:47,585 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 00:17:47,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-24 00:17:47,586 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 00:17:47,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 00:17:47,681 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 00:17:47,683 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 00:17:53,889 INFO L? ?]: Removed 734 outVars from TransFormulas that were not future-live. [2024-11-24 00:17:53,890 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 00:17:53,916 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 00:17:53,917 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-24 00:17:53,917 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:17:53 BoogieIcfgContainer [2024-11-24 00:17:53,917 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 00:17:53,920 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 00:17:53,920 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 00:17:53,924 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 00:17:53,925 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 12:17:44" (1/3) ... [2024-11-24 00:17:53,925 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59af76c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:17:53, skipping insertion in model container [2024-11-24 00:17:53,925 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:17:46" (2/3) ... [2024-11-24 00:17:53,926 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59af76c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:17:53, skipping insertion in model container [2024-11-24 00:17:53,926 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:17:53" (3/3) ... [2024-11-24 00:17:53,927 INFO L128 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label03.c [2024-11-24 00:17:53,942 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 00:17:53,945 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label03.c that has 1 procedures, 874 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2024-11-24 00:17:54,021 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 00:17:54,033 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;@231c51a8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 00:17:54,033 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-24 00:17:54,040 INFO L276 IsEmpty]: Start isEmpty. Operand has 874 states, 871 states have (on average 1.9058553386911596) internal successors, (1660), 873 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:17:54,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-24 00:17:54,046 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:17:54,047 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] [2024-11-24 00:17:54,048 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:17:54,052 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:17:54,053 INFO L85 PathProgramCache]: Analyzing trace with hash -934405548, now seen corresponding path program 1 times [2024-11-24 00:17:54,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:17:54,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365720818] [2024-11-24 00:17:54,062 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:17:54,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:17:54,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:17:54,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:17:54,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:17:54,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365720818] [2024-11-24 00:17:54,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365720818] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:17:54,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:17:54,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-24 00:17:54,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458091402] [2024-11-24 00:17:54,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:17:54,263 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-24 00:17:54,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:17:54,285 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-24 00:17:54,286 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 00:17:54,290 INFO L87 Difference]: Start difference. First operand has 874 states, 871 states have (on average 1.9058553386911596) internal successors, (1660), 873 states have internal predecessors, (1660), 0 states have call successors, (0), 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 10.0) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:17:54,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:17:54,390 INFO L93 Difference]: Finished difference Result 1724 states and 3278 transitions. [2024-11-24 00:17:54,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-24 00:17:54,392 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2024-11-24 00:17:54,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:17:54,406 INFO L225 Difference]: With dead ends: 1724 [2024-11-24 00:17:54,406 INFO L226 Difference]: Without dead ends: 808 [2024-11-24 00:17:54,411 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 [2024-11-24 00:17:54,414 INFO L435 NwaCegarLoop]: 1591 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, 1591 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 [2024-11-24 00:17:54,415 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1591 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:17:54,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808 states. [2024-11-24 00:17:54,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 808 to 808. [2024-11-24 00:17:54,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 808 states, 806 states have (on average 1.8945409429280398) internal successors, (1527), 807 states have internal predecessors, (1527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:17:54,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 808 states to 808 states and 1527 transitions. [2024-11-24 00:17:54,495 INFO L78 Accepts]: Start accepts. Automaton has 808 states and 1527 transitions. Word has length 20 [2024-11-24 00:17:54,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:17:54,495 INFO L471 AbstractCegarLoop]: Abstraction has 808 states and 1527 transitions. [2024-11-24 00:17:54,496 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:17:54,496 INFO L276 IsEmpty]: Start isEmpty. Operand 808 states and 1527 transitions. [2024-11-24 00:17:54,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-24 00:17:54,497 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:17:54,497 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] [2024-11-24 00:17:54,497 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-24 00:17:54,498 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:17:54,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:17:54,498 INFO L85 PathProgramCache]: Analyzing trace with hash -1945522798, now seen corresponding path program 1 times [2024-11-24 00:17:54,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:17:54,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439946405] [2024-11-24 00:17:54,499 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:17:54,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:17:54,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:17:54,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:17:54,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:17:54,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439946405] [2024-11-24 00:17:54,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439946405] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:17:54,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:17:54,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 00:17:54,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461495756] [2024-11-24 00:17:54,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:17:54,807 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:17:54,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:17:54,808 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:17:54,808 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:17:54,808 INFO L87 Difference]: Start difference. First operand 808 states and 1527 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:17:54,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:17:54,940 INFO L93 Difference]: Finished difference Result 844 states and 1581 transitions. [2024-11-24 00:17:54,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:17:54,941 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2024-11-24 00:17:54,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:17:54,947 INFO L225 Difference]: With dead ends: 844 [2024-11-24 00:17:54,947 INFO L226 Difference]: Without dead ends: 808 [2024-11-24 00:17:54,948 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 [2024-11-24 00:17:54,953 INFO L435 NwaCegarLoop]: 1525 mSDtfsCounter, 0 mSDsluCounter, 4554 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6079 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:17:54,953 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6079 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:17:54,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808 states. [2024-11-24 00:17:54,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 808 to 808. [2024-11-24 00:17:55,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 808 states, 806 states have (on average 1.8746898263027296) internal successors, (1511), 807 states have internal predecessors, (1511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:17:55,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 808 states to 808 states and 1511 transitions. [2024-11-24 00:17:55,010 INFO L78 Accepts]: Start accepts. Automaton has 808 states and 1511 transitions. Word has length 20 [2024-11-24 00:17:55,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:17:55,010 INFO L471 AbstractCegarLoop]: Abstraction has 808 states and 1511 transitions. [2024-11-24 00:17:55,011 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:17:55,011 INFO L276 IsEmpty]: Start isEmpty. Operand 808 states and 1511 transitions. [2024-11-24 00:17:55,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-24 00:17:55,011 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:17:55,011 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] [2024-11-24 00:17:55,012 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-24 00:17:55,012 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:17:55,012 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:17:55,012 INFO L85 PathProgramCache]: Analyzing trace with hash -482422651, now seen corresponding path program 1 times [2024-11-24 00:17:55,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:17:55,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276766235] [2024-11-24 00:17:55,013 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:17:55,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:17:55,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:17:55,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:17:55,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:17:55,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276766235] [2024-11-24 00:17:55,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276766235] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:17:55,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:17:55,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-24 00:17:55,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265884906] [2024-11-24 00:17:55,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:17:55,148 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:17:55,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:17:55,149 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:17:55,149 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:17:55,149 INFO L87 Difference]: Start difference. First operand 808 states and 1511 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:17:59,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:17:59,602 INFO L93 Difference]: Finished difference Result 2312 states and 4384 transitions. [2024-11-24 00:17:59,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:17:59,603 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2024-11-24 00:17:59,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:17:59,611 INFO L225 Difference]: With dead ends: 2312 [2024-11-24 00:17:59,612 INFO L226 Difference]: Without dead ends: 1559 [2024-11-24 00:17:59,614 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:17:59,615 INFO L435 NwaCegarLoop]: 180 mSDtfsCounter, 921 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2377 mSolverCounterSat, 711 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 921 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 3088 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 711 IncrementalHoareTripleChecker+Valid, 2377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-11-24 00:17:59,615 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [921 Valid, 187 Invalid, 3088 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [711 Valid, 2377 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2024-11-24 00:17:59,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1559 states. [2024-11-24 00:17:59,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1559 to 1559. [2024-11-24 00:17:59,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1559 states, 1557 states have (on average 1.8304431599229287) internal successors, (2850), 1558 states have internal predecessors, (2850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:17:59,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1559 states to 1559 states and 2850 transitions. [2024-11-24 00:17:59,671 INFO L78 Accepts]: Start accepts. Automaton has 1559 states and 2850 transitions. Word has length 20 [2024-11-24 00:17:59,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:17:59,671 INFO L471 AbstractCegarLoop]: Abstraction has 1559 states and 2850 transitions. [2024-11-24 00:17:59,671 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:17:59,672 INFO L276 IsEmpty]: Start isEmpty. Operand 1559 states and 2850 transitions. [2024-11-24 00:17:59,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-24 00:17:59,673 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:17:59,673 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] [2024-11-24 00:17:59,674 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-24 00:17:59,674 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:17:59,674 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:17:59,675 INFO L85 PathProgramCache]: Analyzing trace with hash 1226597962, now seen corresponding path program 1 times [2024-11-24 00:17:59,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:17:59,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825174433] [2024-11-24 00:17:59,675 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:17:59,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:17:59,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:17:59,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:17:59,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:17:59,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825174433] [2024-11-24 00:17:59,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825174433] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:17:59,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:17:59,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 00:17:59,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149294751] [2024-11-24 00:17:59,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:17:59,868 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:17:59,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:17:59,869 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:17:59,870 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:17:59,870 INFO L87 Difference]: Start difference. First operand 1559 states and 2850 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:00,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:18:00,011 INFO L93 Difference]: Finished difference Result 1751 states and 3150 transitions. [2024-11-24 00:18:00,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-24 00:18:00,012 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 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 35 [2024-11-24 00:18:00,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:18:00,019 INFO L225 Difference]: With dead ends: 1751 [2024-11-24 00:18:00,019 INFO L226 Difference]: Without dead ends: 1719 [2024-11-24 00:18:00,020 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-24 00:18:00,021 INFO L435 NwaCegarLoop]: 1505 mSDtfsCounter, 4682 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4682 SdHoareTripleChecker+Valid, 1758 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:18:00,021 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4682 Valid, 1758 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:18:00,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1719 states. [2024-11-24 00:18:00,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1719 to 1589. [2024-11-24 00:18:00,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1589 states, 1587 states have (on average 1.8254568367989918) internal successors, (2897), 1588 states have internal predecessors, (2897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:00,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1589 states to 1589 states and 2897 transitions. [2024-11-24 00:18:00,066 INFO L78 Accepts]: Start accepts. Automaton has 1589 states and 2897 transitions. Word has length 35 [2024-11-24 00:18:00,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:18:00,066 INFO L471 AbstractCegarLoop]: Abstraction has 1589 states and 2897 transitions. [2024-11-24 00:18:00,067 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:00,067 INFO L276 IsEmpty]: Start isEmpty. Operand 1589 states and 2897 transitions. [2024-11-24 00:18:00,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-24 00:18:00,068 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:18:00,068 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] [2024-11-24 00:18:00,068 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-24 00:18:00,068 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:18:00,069 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:18:00,069 INFO L85 PathProgramCache]: Analyzing trace with hash 523901274, now seen corresponding path program 1 times [2024-11-24 00:18:00,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:18:00,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905237240] [2024-11-24 00:18:00,069 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:18:00,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:18:00,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:18:00,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:18:00,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:18:00,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905237240] [2024-11-24 00:18:00,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905237240] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:18:00,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:18:00,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:18:00,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818742269] [2024-11-24 00:18:00,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:18:00,209 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:18:00,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:18:00,209 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:18:00,209 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:18:00,209 INFO L87 Difference]: Start difference. First operand 1589 states and 2897 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:00,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:18:00,260 INFO L93 Difference]: Finished difference Result 1702 states and 3072 transitions. [2024-11-24 00:18:00,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:18:00,260 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2024-11-24 00:18:00,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:18:00,267 INFO L225 Difference]: With dead ends: 1702 [2024-11-24 00:18:00,268 INFO L226 Difference]: Without dead ends: 1640 [2024-11-24 00:18:00,268 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 [2024-11-24 00:18:00,271 INFO L435 NwaCegarLoop]: 1507 mSDtfsCounter, 1468 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1468 SdHoareTripleChecker+Valid, 1550 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:18:00,271 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1468 Valid, 1550 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:18:00,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1640 states. [2024-11-24 00:18:00,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1640 to 1636. [2024-11-24 00:18:00,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1636 states, 1634 states have (on average 1.8157894736842106) internal successors, (2967), 1635 states have internal predecessors, (2967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:00,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1636 states to 1636 states and 2967 transitions. [2024-11-24 00:18:00,317 INFO L78 Accepts]: Start accepts. Automaton has 1636 states and 2967 transitions. Word has length 37 [2024-11-24 00:18:00,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:18:00,318 INFO L471 AbstractCegarLoop]: Abstraction has 1636 states and 2967 transitions. [2024-11-24 00:18:00,318 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:00,318 INFO L276 IsEmpty]: Start isEmpty. Operand 1636 states and 2967 transitions. [2024-11-24 00:18:00,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-24 00:18:00,321 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:18:00,321 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] [2024-11-24 00:18:00,321 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-24 00:18:00,321 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:18:00,322 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:18:00,322 INFO L85 PathProgramCache]: Analyzing trace with hash 590394786, now seen corresponding path program 1 times [2024-11-24 00:18:00,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:18:00,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769942723] [2024-11-24 00:18:00,322 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:18:00,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:18:00,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:18:00,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:18:00,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:18:00,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769942723] [2024-11-24 00:18:00,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769942723] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:18:00,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:18:00,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 00:18:00,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738227158] [2024-11-24 00:18:00,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:18:00,601 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:18:00,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:18:00,604 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:18:00,604 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:18:00,604 INFO L87 Difference]: Start difference. First operand 1636 states and 2967 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:00,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:18:00,697 INFO L93 Difference]: Finished difference Result 1747 states and 3135 transitions. [2024-11-24 00:18:00,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:18:00,698 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2024-11-24 00:18:00,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:18:00,754 INFO L225 Difference]: With dead ends: 1747 [2024-11-24 00:18:00,755 INFO L226 Difference]: Without dead ends: 1638 [2024-11-24 00:18:00,755 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 [2024-11-24 00:18:00,756 INFO L435 NwaCegarLoop]: 1506 mSDtfsCounter, 2952 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2952 SdHoareTripleChecker+Valid, 1601 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:18:00,756 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2952 Valid, 1601 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:18:00,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1638 states. [2024-11-24 00:18:00,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1638 to 1636. [2024-11-24 00:18:00,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1636 states, 1634 states have (on average 1.8145654834761322) internal successors, (2965), 1635 states have internal predecessors, (2965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:00,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1636 states to 1636 states and 2965 transitions. [2024-11-24 00:18:00,805 INFO L78 Accepts]: Start accepts. Automaton has 1636 states and 2965 transitions. Word has length 37 [2024-11-24 00:18:00,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:18:00,805 INFO L471 AbstractCegarLoop]: Abstraction has 1636 states and 2965 transitions. [2024-11-24 00:18:00,806 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:00,806 INFO L276 IsEmpty]: Start isEmpty. Operand 1636 states and 2965 transitions. [2024-11-24 00:18:00,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-24 00:18:00,807 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:18:00,807 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] [2024-11-24 00:18:00,808 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-24 00:18:00,808 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:18:00,808 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:18:00,808 INFO L85 PathProgramCache]: Analyzing trace with hash 707645968, now seen corresponding path program 1 times [2024-11-24 00:18:00,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:18:00,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793900552] [2024-11-24 00:18:00,808 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:18:00,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:18:00,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:18:01,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:18:01,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:18:01,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793900552] [2024-11-24 00:18:01,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793900552] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:18:01,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:18:01,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-24 00:18:01,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754682521] [2024-11-24 00:18:01,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:18:01,137 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-24 00:18:01,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:18:01,137 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-24 00:18:01,137 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-24 00:18:01,137 INFO L87 Difference]: Start difference. First operand 1636 states and 2965 transitions. Second operand has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 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) [2024-11-24 00:18:01,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:18:01,228 INFO L93 Difference]: Finished difference Result 1644 states and 2974 transitions. [2024-11-24 00:18:01,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-24 00:18:01,228 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 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 [2024-11-24 00:18:01,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:18:01,235 INFO L225 Difference]: With dead ends: 1644 [2024-11-24 00:18:01,236 INFO L226 Difference]: Without dead ends: 1642 [2024-11-24 00:18:01,237 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-24 00:18:01,238 INFO L435 NwaCegarLoop]: 1505 mSDtfsCounter, 0 mSDsluCounter, 9017 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10522 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:18:01,239 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 10522 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:18:01,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1642 states. [2024-11-24 00:18:01,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1642 to 1642. [2024-11-24 00:18:01,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1642 states, 1640 states have (on average 1.8109756097560976) internal successors, (2970), 1641 states have internal predecessors, (2970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:01,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1642 states to 1642 states and 2970 transitions. [2024-11-24 00:18:01,287 INFO L78 Accepts]: Start accepts. Automaton has 1642 states and 2970 transitions. Word has length 38 [2024-11-24 00:18:01,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:18:01,287 INFO L471 AbstractCegarLoop]: Abstraction has 1642 states and 2970 transitions. [2024-11-24 00:18:01,287 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 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) [2024-11-24 00:18:01,287 INFO L276 IsEmpty]: Start isEmpty. Operand 1642 states and 2970 transitions. [2024-11-24 00:18:01,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-24 00:18:01,288 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:18:01,288 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] [2024-11-24 00:18:01,289 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-24 00:18:01,289 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:18:01,289 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:18:01,289 INFO L85 PathProgramCache]: Analyzing trace with hash 1903217474, now seen corresponding path program 1 times [2024-11-24 00:18:01,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:18:01,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533853324] [2024-11-24 00:18:01,290 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:18:01,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:18:01,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:18:01,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:18:01,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:18:01,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533853324] [2024-11-24 00:18:01,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533853324] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:18:01,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:18:01,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:18:01,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813993223] [2024-11-24 00:18:01,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:18:01,367 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:18:01,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:18:01,367 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:18:01,367 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:18:01,367 INFO L87 Difference]: Start difference. First operand 1642 states and 2970 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 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) [2024-11-24 00:18:01,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:18:01,404 INFO L93 Difference]: Finished difference Result 1856 states and 3282 transitions. [2024-11-24 00:18:01,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:18:01,405 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 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 [2024-11-24 00:18:01,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:18:01,413 INFO L225 Difference]: With dead ends: 1856 [2024-11-24 00:18:01,413 INFO L226 Difference]: Without dead ends: 1741 [2024-11-24 00:18:01,414 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 [2024-11-24 00:18:01,415 INFO L435 NwaCegarLoop]: 1528 mSDtfsCounter, 1475 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1475 SdHoareTripleChecker+Valid, 1587 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 [2024-11-24 00:18:01,415 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1475 Valid, 1587 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:18:01,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1741 states. [2024-11-24 00:18:01,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1741 to 1739. [2024-11-24 00:18:01,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1739 states, 1737 states have (on average 1.7887161773172136) internal successors, (3107), 1738 states have internal predecessors, (3107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:01,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1739 states to 1739 states and 3107 transitions. [2024-11-24 00:18:01,461 INFO L78 Accepts]: Start accepts. Automaton has 1739 states and 3107 transitions. Word has length 39 [2024-11-24 00:18:01,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:18:01,462 INFO L471 AbstractCegarLoop]: Abstraction has 1739 states and 3107 transitions. [2024-11-24 00:18:01,462 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 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) [2024-11-24 00:18:01,462 INFO L276 IsEmpty]: Start isEmpty. Operand 1739 states and 3107 transitions. [2024-11-24 00:18:01,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-24 00:18:01,463 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:18:01,463 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] [2024-11-24 00:18:01,463 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-24 00:18:01,463 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:18:01,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:18:01,465 INFO L85 PathProgramCache]: Analyzing trace with hash 122284610, now seen corresponding path program 1 times [2024-11-24 00:18:01,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:18:01,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123424392] [2024-11-24 00:18:01,465 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:18:01,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:18:01,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:18:01,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:18:01,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:18:01,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123424392] [2024-11-24 00:18:01,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123424392] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:18:01,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:18:01,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:18:01,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577138322] [2024-11-24 00:18:01,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:18:01,543 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:18:01,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:18:01,543 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:18:01,543 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:18:01,543 INFO L87 Difference]: Start difference. First operand 1739 states and 3107 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 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) [2024-11-24 00:18:01,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:18:01,584 INFO L93 Difference]: Finished difference Result 2131 states and 3665 transitions. [2024-11-24 00:18:01,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:18:01,585 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 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 [2024-11-24 00:18:01,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:18:01,592 INFO L225 Difference]: With dead ends: 2131 [2024-11-24 00:18:01,592 INFO L226 Difference]: Without dead ends: 1919 [2024-11-24 00:18:01,594 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 [2024-11-24 00:18:01,595 INFO L435 NwaCegarLoop]: 1538 mSDtfsCounter, 1477 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1477 SdHoareTripleChecker+Valid, 1593 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 [2024-11-24 00:18:01,596 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1477 Valid, 1593 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:18:01,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1919 states. [2024-11-24 00:18:01,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1919 to 1917. [2024-11-24 00:18:01,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1917 states, 1915 states have (on average 1.7488250652741515) internal successors, (3349), 1916 states have internal predecessors, (3349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:01,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1917 states to 1917 states and 3349 transitions. [2024-11-24 00:18:01,650 INFO L78 Accepts]: Start accepts. Automaton has 1917 states and 3349 transitions. Word has length 39 [2024-11-24 00:18:01,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:18:01,650 INFO L471 AbstractCegarLoop]: Abstraction has 1917 states and 3349 transitions. [2024-11-24 00:18:01,651 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 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) [2024-11-24 00:18:01,651 INFO L276 IsEmpty]: Start isEmpty. Operand 1917 states and 3349 transitions. [2024-11-24 00:18:01,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-24 00:18:01,651 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:18:01,651 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] [2024-11-24 00:18:01,652 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-24 00:18:01,652 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:18:01,653 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:18:01,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1688735299, now seen corresponding path program 1 times [2024-11-24 00:18:01,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:18:01,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114602553] [2024-11-24 00:18:01,654 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:18:01,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:18:01,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:18:01,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:18:01,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:18:01,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114602553] [2024-11-24 00:18:01,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114602553] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:18:01,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:18:01,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:18:01,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748848558] [2024-11-24 00:18:01,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:18:01,728 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:18:01,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:18:01,728 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:18:01,728 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:18:01,728 INFO L87 Difference]: Start difference. First operand 1917 states and 3349 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:01,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:18:01,771 INFO L93 Difference]: Finished difference Result 2340 states and 3955 transitions. [2024-11-24 00:18:01,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:18:01,772 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 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 41 [2024-11-24 00:18:01,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:18:01,781 INFO L225 Difference]: With dead ends: 2340 [2024-11-24 00:18:01,781 INFO L226 Difference]: Without dead ends: 2105 [2024-11-24 00:18:01,783 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 [2024-11-24 00:18:01,785 INFO L435 NwaCegarLoop]: 1543 mSDtfsCounter, 1476 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1476 SdHoareTripleChecker+Valid, 1594 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 [2024-11-24 00:18:01,785 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1476 Valid, 1594 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:18:01,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2105 states. [2024-11-24 00:18:01,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2105 to 2103. [2024-11-24 00:18:01,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2103 states, 2101 states have (on average 1.714897667777249) internal successors, (3603), 2102 states have internal predecessors, (3603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:01,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2103 states to 2103 states and 3603 transitions. [2024-11-24 00:18:01,844 INFO L78 Accepts]: Start accepts. Automaton has 2103 states and 3603 transitions. Word has length 41 [2024-11-24 00:18:01,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:18:01,845 INFO L471 AbstractCegarLoop]: Abstraction has 2103 states and 3603 transitions. [2024-11-24 00:18:01,845 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:01,845 INFO L276 IsEmpty]: Start isEmpty. Operand 2103 states and 3603 transitions. [2024-11-24 00:18:01,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-24 00:18:01,846 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:18:01,846 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] [2024-11-24 00:18:01,846 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-24 00:18:01,846 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:18:01,846 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:18:01,846 INFO L85 PathProgramCache]: Analyzing trace with hash 923003988, now seen corresponding path program 1 times [2024-11-24 00:18:01,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:18:01,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199760098] [2024-11-24 00:18:01,846 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:18:01,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:18:01,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:18:01,970 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-24 00:18:01,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:18:01,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199760098] [2024-11-24 00:18:01,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199760098] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:18:01,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:18:01,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 00:18:01,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394181845] [2024-11-24 00:18:01,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:18:01,971 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:18:01,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:18:01,971 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:18:01,971 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:18:01,971 INFO L87 Difference]: Start difference. First operand 2103 states and 3603 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:02,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:18:02,109 INFO L93 Difference]: Finished difference Result 3959 states and 6183 transitions. [2024-11-24 00:18:02,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:18:02,110 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2024-11-24 00:18:02,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:18:02,123 INFO L225 Difference]: With dead ends: 3959 [2024-11-24 00:18:02,123 INFO L226 Difference]: Without dead ends: 3385 [2024-11-24 00:18:02,125 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 [2024-11-24 00:18:02,125 INFO L435 NwaCegarLoop]: 1551 mSDtfsCounter, 3061 mSDsluCounter, 1596 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3061 SdHoareTripleChecker+Valid, 3147 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:18:02,125 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3061 Valid, 3147 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:18:02,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3385 states. [2024-11-24 00:18:02,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3385 to 2675. [2024-11-24 00:18:02,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2675 states, 2673 states have (on average 1.6427235316124205) internal successors, (4391), 2674 states have internal predecessors, (4391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:02,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2675 states to 2675 states and 4391 transitions. [2024-11-24 00:18:02,211 INFO L78 Accepts]: Start accepts. Automaton has 2675 states and 4391 transitions. Word has length 54 [2024-11-24 00:18:02,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:18:02,211 INFO L471 AbstractCegarLoop]: Abstraction has 2675 states and 4391 transitions. [2024-11-24 00:18:02,211 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:02,212 INFO L276 IsEmpty]: Start isEmpty. Operand 2675 states and 4391 transitions. [2024-11-24 00:18:02,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-24 00:18:02,212 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:18:02,212 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] [2024-11-24 00:18:02,213 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-24 00:18:02,213 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:18:02,213 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:18:02,213 INFO L85 PathProgramCache]: Analyzing trace with hash -857928876, now seen corresponding path program 1 times [2024-11-24 00:18:02,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:18:02,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116226716] [2024-11-24 00:18:02,213 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:18:02,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:18:02,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:18:02,352 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-24 00:18:02,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:18:02,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116226716] [2024-11-24 00:18:02,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116226716] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:18:02,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:18:02,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 00:18:02,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458917464] [2024-11-24 00:18:02,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:18:02,353 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:18:02,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:18:02,353 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:18:02,353 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:18:02,353 INFO L87 Difference]: Start difference. First operand 2675 states and 4391 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:02,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:18:02,496 INFO L93 Difference]: Finished difference Result 4531 states and 6971 transitions. [2024-11-24 00:18:02,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:18:02,497 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2024-11-24 00:18:02,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:18:02,519 INFO L225 Difference]: With dead ends: 4531 [2024-11-24 00:18:02,519 INFO L226 Difference]: Without dead ends: 3957 [2024-11-24 00:18:02,521 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 [2024-11-24 00:18:02,522 INFO L435 NwaCegarLoop]: 1552 mSDtfsCounter, 3049 mSDsluCounter, 1618 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3049 SdHoareTripleChecker+Valid, 3170 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:18:02,522 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3049 Valid, 3170 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:18:02,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3957 states. [2024-11-24 00:18:02,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3957 to 3535. [2024-11-24 00:18:02,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3535 states, 3533 states have (on average 1.5745825077837532) internal successors, (5563), 3534 states have internal predecessors, (5563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:02,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3535 states to 3535 states and 5563 transitions. [2024-11-24 00:18:02,636 INFO L78 Accepts]: Start accepts. Automaton has 3535 states and 5563 transitions. Word has length 54 [2024-11-24 00:18:02,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:18:02,636 INFO L471 AbstractCegarLoop]: Abstraction has 3535 states and 5563 transitions. [2024-11-24 00:18:02,636 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:02,636 INFO L276 IsEmpty]: Start isEmpty. Operand 3535 states and 5563 transitions. [2024-11-24 00:18:02,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-24 00:18:02,637 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:18:02,637 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] [2024-11-24 00:18:02,637 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-24 00:18:02,637 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:18:02,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:18:02,638 INFO L85 PathProgramCache]: Analyzing trace with hash 894361900, now seen corresponding path program 1 times [2024-11-24 00:18:02,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:18:02,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839637303] [2024-11-24 00:18:02,638 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:18:02,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:18:02,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:18:02,750 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:18:02,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:18:02,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839637303] [2024-11-24 00:18:02,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839637303] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:18:02,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:18:02,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:18:02,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132666929] [2024-11-24 00:18:02,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:18:02,751 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:18:02,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:18:02,752 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:18:02,752 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:18:02,752 INFO L87 Difference]: Start difference. First operand 3535 states and 5563 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:02,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:18:02,822 INFO L93 Difference]: Finished difference Result 5011 states and 7626 transitions. [2024-11-24 00:18:02,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:18:02,822 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 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 [2024-11-24 00:18:02,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:18:02,835 INFO L225 Difference]: With dead ends: 5011 [2024-11-24 00:18:02,835 INFO L226 Difference]: Without dead ends: 3005 [2024-11-24 00:18:02,837 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 [2024-11-24 00:18:02,839 INFO L435 NwaCegarLoop]: 1535 mSDtfsCounter, 34 mSDsluCounter, 1496 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 3031 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 [2024-11-24 00:18:02,839 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 3031 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:18:02,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3005 states. [2024-11-24 00:18:02,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3005 to 3003. [2024-11-24 00:18:02,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3003 states, 3001 states have (on average 1.611129623458847) internal successors, (4835), 3002 states have internal predecessors, (4835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:02,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3003 states to 3003 states and 4835 transitions. [2024-11-24 00:18:02,939 INFO L78 Accepts]: Start accepts. Automaton has 3003 states and 4835 transitions. Word has length 56 [2024-11-24 00:18:02,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:18:02,939 INFO L471 AbstractCegarLoop]: Abstraction has 3003 states and 4835 transitions. [2024-11-24 00:18:02,940 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:02,940 INFO L276 IsEmpty]: Start isEmpty. Operand 3003 states and 4835 transitions. [2024-11-24 00:18:02,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-24 00:18:02,942 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:18:02,942 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] [2024-11-24 00:18:02,942 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-24 00:18:02,942 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:18:02,942 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:18:02,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1218909775, now seen corresponding path program 1 times [2024-11-24 00:18:02,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:18:02,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069768094] [2024-11-24 00:18:02,943 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:18:02,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:18:02,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:18:03,074 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-24 00:18:03,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:18:03,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069768094] [2024-11-24 00:18:03,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069768094] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:18:03,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:18:03,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 00:18:03,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436687582] [2024-11-24 00:18:03,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:18:03,074 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:18:03,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:18:03,075 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:18:03,075 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:18:03,075 INFO L87 Difference]: Start difference. First operand 3003 states and 4835 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:03,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:18:03,249 INFO L93 Difference]: Finished difference Result 4259 states and 6591 transitions. [2024-11-24 00:18:03,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:18:03,253 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 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 [2024-11-24 00:18:03,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:18:03,263 INFO L225 Difference]: With dead ends: 4259 [2024-11-24 00:18:03,263 INFO L226 Difference]: Without dead ends: 3841 [2024-11-24 00:18:03,265 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 [2024-11-24 00:18:03,265 INFO L435 NwaCegarLoop]: 1549 mSDtfsCounter, 3049 mSDsluCounter, 1606 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3049 SdHoareTripleChecker+Valid, 3155 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:18:03,266 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3049 Valid, 3155 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:18:03,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3841 states. [2024-11-24 00:18:03,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3841 to 3419. [2024-11-24 00:18:03,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3419 states, 3417 states have (on average 1.5835528241147205) internal successors, (5411), 3418 states have internal predecessors, (5411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:03,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3419 states to 3419 states and 5411 transitions. [2024-11-24 00:18:03,381 INFO L78 Accepts]: Start accepts. Automaton has 3419 states and 5411 transitions. Word has length 56 [2024-11-24 00:18:03,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:18:03,381 INFO L471 AbstractCegarLoop]: Abstraction has 3419 states and 5411 transitions. [2024-11-24 00:18:03,382 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:03,382 INFO L276 IsEmpty]: Start isEmpty. Operand 3419 states and 5411 transitions. [2024-11-24 00:18:03,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-24 00:18:03,383 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:18:03,383 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] [2024-11-24 00:18:03,383 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-24 00:18:03,383 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:18:03,384 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:18:03,384 INFO L85 PathProgramCache]: Analyzing trace with hash -877348108, now seen corresponding path program 1 times [2024-11-24 00:18:03,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:18:03,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268632201] [2024-11-24 00:18:03,385 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:18:03,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:18:03,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:18:03,494 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:18:03,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:18:03,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268632201] [2024-11-24 00:18:03,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268632201] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:18:03,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:18:03,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:18:03,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429665474] [2024-11-24 00:18:03,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:18:03,495 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:18:03,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:18:03,496 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:18:03,496 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:18:03,496 INFO L87 Difference]: Start difference. First operand 3419 states and 5411 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) [2024-11-24 00:18:03,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:18:03,549 INFO L93 Difference]: Finished difference Result 4359 states and 6709 transitions. [2024-11-24 00:18:03,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:18:03,549 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 [2024-11-24 00:18:03,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:18:03,555 INFO L225 Difference]: With dead ends: 4359 [2024-11-24 00:18:03,555 INFO L226 Difference]: Without dead ends: 2485 [2024-11-24 00:18:03,557 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 [2024-11-24 00:18:03,558 INFO L435 NwaCegarLoop]: 1528 mSDtfsCounter, 29 mSDsluCounter, 1488 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 3016 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 [2024-11-24 00:18:03,558 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 3016 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:18:03,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2485 states. [2024-11-24 00:18:03,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2485 to 2483. [2024-11-24 00:18:03,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2483 states, 2481 states have (on average 1.6513502619911327) internal successors, (4097), 2482 states have internal predecessors, (4097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:03,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2483 states to 2483 states and 4097 transitions. [2024-11-24 00:18:03,629 INFO L78 Accepts]: Start accepts. Automaton has 2483 states and 4097 transitions. Word has length 57 [2024-11-24 00:18:03,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:18:03,629 INFO L471 AbstractCegarLoop]: Abstraction has 2483 states and 4097 transitions. [2024-11-24 00:18:03,629 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) [2024-11-24 00:18:03,630 INFO L276 IsEmpty]: Start isEmpty. Operand 2483 states and 4097 transitions. [2024-11-24 00:18:03,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-24 00:18:03,630 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:18:03,630 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] [2024-11-24 00:18:03,631 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-24 00:18:03,631 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:18:03,631 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:18:03,631 INFO L85 PathProgramCache]: Analyzing trace with hash 1226511174, now seen corresponding path program 1 times [2024-11-24 00:18:03,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:18:03,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282225958] [2024-11-24 00:18:03,631 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:18:03,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:18:03,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:18:03,746 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:18:03,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:18:03,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282225958] [2024-11-24 00:18:03,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282225958] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:18:03,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:18:03,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:18:03,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182549453] [2024-11-24 00:18:03,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:18:03,746 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:18:03,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:18:03,747 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:18:03,747 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:18:03,747 INFO L87 Difference]: Start difference. First operand 2483 states and 4097 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) [2024-11-24 00:18:03,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:18:03,787 INFO L93 Difference]: Finished difference Result 2955 states and 4738 transitions. [2024-11-24 00:18:03,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:18:03,788 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 [2024-11-24 00:18:03,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:18:03,793 INFO L225 Difference]: With dead ends: 2955 [2024-11-24 00:18:03,793 INFO L226 Difference]: Without dead ends: 2017 [2024-11-24 00:18:03,794 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 [2024-11-24 00:18:03,796 INFO L435 NwaCegarLoop]: 1521 mSDtfsCounter, 26 mSDsluCounter, 1480 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 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 [2024-11-24 00:18:03,796 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 3001 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:18:03,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2017 states. [2024-11-24 00:18:03,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2017 to 2015. [2024-11-24 00:18:03,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2015 states, 2013 states have (on average 1.7133631395926479) internal successors, (3449), 2014 states have internal predecessors, (3449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:03,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2015 states to 2015 states and 3449 transitions. [2024-11-24 00:18:03,846 INFO L78 Accepts]: Start accepts. Automaton has 2015 states and 3449 transitions. Word has length 59 [2024-11-24 00:18:03,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:18:03,846 INFO L471 AbstractCegarLoop]: Abstraction has 2015 states and 3449 transitions. [2024-11-24 00:18:03,846 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) [2024-11-24 00:18:03,846 INFO L276 IsEmpty]: Start isEmpty. Operand 2015 states and 3449 transitions. [2024-11-24 00:18:03,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-24 00:18:03,850 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:18:03,850 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-24 00:18:03,850 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-24 00:18:03,850 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:18:03,850 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:18:03,850 INFO L85 PathProgramCache]: Analyzing trace with hash -1826022888, now seen corresponding path program 1 times [2024-11-24 00:18:03,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:18:03,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812718784] [2024-11-24 00:18:03,852 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:18:03,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:18:03,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:18:05,703 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:18:05,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:18:05,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812718784] [2024-11-24 00:18:05,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812718784] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:18:05,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [882357331] [2024-11-24 00:18:05,704 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:18:05,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:18:05,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:18:05,709 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:18:05,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-24 00:18:05,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:18:05,845 INFO L256 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-24 00:18:05,851 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:18:06,140 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-24 00:18:06,140 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:18:06,386 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-24 00:18:06,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [882357331] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:18:06,386 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:18:06,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 6, 4] total 19 [2024-11-24 00:18:06,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121587672] [2024-11-24 00:18:06,386 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:18:06,387 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-24 00:18:06,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:18:06,388 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-24 00:18:06,388 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2024-11-24 00:18:06,389 INFO L87 Difference]: Start difference. First operand 2015 states and 3449 transitions. Second operand has 19 states, 19 states have (on average 8.736842105263158) internal successors, (166), 19 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:08,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:18:08,914 INFO L93 Difference]: Finished difference Result 4416 states and 6623 transitions. [2024-11-24 00:18:08,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-24 00:18:08,915 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 8.736842105263158) internal successors, (166), 19 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2024-11-24 00:18:08,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:18:08,924 INFO L225 Difference]: With dead ends: 4416 [2024-11-24 00:18:08,924 INFO L226 Difference]: Without dead ends: 3946 [2024-11-24 00:18:08,927 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 788 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=545, Invalid=2535, Unknown=0, NotChecked=0, Total=3080 [2024-11-24 00:18:08,927 INFO L435 NwaCegarLoop]: 1499 mSDtfsCounter, 17260 mSDsluCounter, 7676 mSDsCounter, 0 mSdLazyCounter, 652 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17260 SdHoareTripleChecker+Valid, 9175 SdHoareTripleChecker+Invalid, 699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-24 00:18:08,928 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17260 Valid, 9175 Invalid, 699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 652 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-24 00:18:08,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3946 states. [2024-11-24 00:18:09,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3946 to 3912. [2024-11-24 00:18:09,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3912 states, 3910 states have (on average 1.481841432225064) internal successors, (5794), 3911 states have internal predecessors, (5794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:09,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3912 states to 3912 states and 5794 transitions. [2024-11-24 00:18:09,116 INFO L78 Accepts]: Start accepts. Automaton has 3912 states and 5794 transitions. Word has length 61 [2024-11-24 00:18:09,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:18:09,116 INFO L471 AbstractCegarLoop]: Abstraction has 3912 states and 5794 transitions. [2024-11-24 00:18:09,116 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 8.736842105263158) internal successors, (166), 19 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:09,116 INFO L276 IsEmpty]: Start isEmpty. Operand 3912 states and 5794 transitions. [2024-11-24 00:18:09,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-24 00:18:09,118 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:18:09,118 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, 1] [2024-11-24 00:18:09,129 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-24 00:18:09,318 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-24 00:18:09,319 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:18:09,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:18:09,322 INFO L85 PathProgramCache]: Analyzing trace with hash 459765187, now seen corresponding path program 1 times [2024-11-24 00:18:09,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:18:09,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442762088] [2024-11-24 00:18:09,322 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:18:09,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:18:09,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:18:11,830 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:18:11,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:18:11,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442762088] [2024-11-24 00:18:11,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442762088] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:18:11,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [225418710] [2024-11-24 00:18:11,831 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:18:11,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:18:11,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:18:11,833 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:18:11,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-24 00:18:11,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:18:11,953 INFO L256 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-24 00:18:11,955 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:18:12,452 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:18:12,452 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:18:13,262 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:18:13,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [225418710] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:18:13,263 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:18:13,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 25 [2024-11-24 00:18:13,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152389441] [2024-11-24 00:18:13,263 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:18:13,264 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-24 00:18:13,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:18:13,265 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-24 00:18:13,265 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=552, Unknown=0, NotChecked=0, Total=650 [2024-11-24 00:18:13,265 INFO L87 Difference]: Start difference. First operand 3912 states and 5794 transitions. Second operand has 26 states, 26 states have (on average 5.769230769230769) internal successors, (150), 25 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:14,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:18:14,013 INFO L93 Difference]: Finished difference Result 8181 states and 11209 transitions. [2024-11-24 00:18:14,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-24 00:18:14,013 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.769230769230769) internal successors, (150), 25 states have internal predecessors, (150), 0 states have call successors, (0), 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 [2024-11-24 00:18:14,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:18:14,027 INFO L225 Difference]: With dead ends: 8181 [2024-11-24 00:18:14,027 INFO L226 Difference]: Without dead ends: 6222 [2024-11-24 00:18:14,031 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=287, Invalid=1045, Unknown=0, NotChecked=0, Total=1332 [2024-11-24 00:18:14,032 INFO L435 NwaCegarLoop]: 1495 mSDtfsCounter, 10631 mSDsluCounter, 3253 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10631 SdHoareTripleChecker+Valid, 4748 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-24 00:18:14,032 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10631 Valid, 4748 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-24 00:18:14,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6222 states. [2024-11-24 00:18:14,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6222 to 6156. [2024-11-24 00:18:14,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6156 states, 6154 states have (on average 1.3865778355541112) internal successors, (8533), 6155 states have internal predecessors, (8533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:14,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6156 states to 6156 states and 8533 transitions. [2024-11-24 00:18:14,290 INFO L78 Accepts]: Start accepts. Automaton has 6156 states and 8533 transitions. Word has length 62 [2024-11-24 00:18:14,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:18:14,291 INFO L471 AbstractCegarLoop]: Abstraction has 6156 states and 8533 transitions. [2024-11-24 00:18:14,291 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.769230769230769) internal successors, (150), 25 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:14,291 INFO L276 IsEmpty]: Start isEmpty. Operand 6156 states and 8533 transitions. [2024-11-24 00:18:14,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-24 00:18:14,292 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:18:14,292 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:18:14,302 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-24 00:18:14,497 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-24 00:18:14,497 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:18:14,497 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:18:14,497 INFO L85 PathProgramCache]: Analyzing trace with hash 1147902773, now seen corresponding path program 1 times [2024-11-24 00:18:14,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:18:14,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300429887] [2024-11-24 00:18:14,498 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:18:14,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:18:14,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:18:14,927 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:18:14,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:18:14,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300429887] [2024-11-24 00:18:14,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300429887] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:18:14,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1558517697] [2024-11-24 00:18:14,927 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:18:14,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:18:14,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:18:14,929 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:18:14,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-24 00:18:15,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:18:15,052 INFO L256 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-24 00:18:15,054 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:18:15,812 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:18:15,812 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:18:16,973 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:18:16,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1558517697] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:18:16,974 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:18:16,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 13] total 32 [2024-11-24 00:18:16,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541686720] [2024-11-24 00:18:16,974 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:18:16,974 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-24 00:18:16,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:18:16,975 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-24 00:18:16,975 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=887, Unknown=0, NotChecked=0, Total=992 [2024-11-24 00:18:16,975 INFO L87 Difference]: Start difference. First operand 6156 states and 8533 transitions. Second operand has 32 states, 32 states have (on average 4.9375) internal successors, (158), 32 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:20,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:18:20,700 INFO L93 Difference]: Finished difference Result 16403 states and 21329 transitions. [2024-11-24 00:18:20,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-11-24 00:18:20,701 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.9375) internal successors, (158), 32 states have internal predecessors, (158), 0 states have call successors, (0), 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 [2024-11-24 00:18:20,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:18:20,727 INFO L225 Difference]: With dead ends: 16403 [2024-11-24 00:18:20,728 INFO L226 Difference]: Without dead ends: 12305 [2024-11-24 00:18:20,737 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1630 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=1214, Invalid=5592, Unknown=0, NotChecked=0, Total=6806 [2024-11-24 00:18:20,737 INFO L435 NwaCegarLoop]: 1508 mSDtfsCounter, 14006 mSDsluCounter, 15506 mSDsCounter, 0 mSdLazyCounter, 946 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14006 SdHoareTripleChecker+Valid, 17014 SdHoareTripleChecker+Invalid, 994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 946 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-24 00:18:20,738 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14006 Valid, 17014 Invalid, 994 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 946 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-24 00:18:20,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12305 states. [2024-11-24 00:18:21,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12305 to 8355. [2024-11-24 00:18:21,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8355 states, 8353 states have (on average 1.338680713516102) internal successors, (11182), 8354 states have internal predecessors, (11182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:21,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8355 states to 8355 states and 11182 transitions. [2024-11-24 00:18:21,137 INFO L78 Accepts]: Start accepts. Automaton has 8355 states and 11182 transitions. Word has length 62 [2024-11-24 00:18:21,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:18:21,137 INFO L471 AbstractCegarLoop]: Abstraction has 8355 states and 11182 transitions. [2024-11-24 00:18:21,137 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.9375) internal successors, (158), 32 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:21,137 INFO L276 IsEmpty]: Start isEmpty. Operand 8355 states and 11182 transitions. [2024-11-24 00:18:21,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-24 00:18:21,138 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:18:21,139 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, 1, 1] [2024-11-24 00:18:21,148 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-24 00:18:21,339 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:18:21,340 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:18:21,341 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:18:21,341 INFO L85 PathProgramCache]: Analyzing trace with hash 807603108, now seen corresponding path program 1 times [2024-11-24 00:18:21,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:18:21,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687356968] [2024-11-24 00:18:21,342 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:18:21,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:18:21,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:18:21,754 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:18:21,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:18:21,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687356968] [2024-11-24 00:18:21,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687356968] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:18:21,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1651805552] [2024-11-24 00:18:21,755 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:18:21,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:18:21,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:18:21,760 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:18:21,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-24 00:18:21,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:18:21,870 INFO L256 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-24 00:18:21,872 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:18:23,335 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:18:23,336 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:18:24,565 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:18:24,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1651805552] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:18:24,565 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:18:24,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 11] total 26 [2024-11-24 00:18:24,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419968394] [2024-11-24 00:18:24,565 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:18:24,566 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-24 00:18:24,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:18:24,566 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-24 00:18:24,567 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=590, Unknown=0, NotChecked=0, Total=702 [2024-11-24 00:18:24,567 INFO L87 Difference]: Start difference. First operand 8355 states and 11182 transitions. Second operand has 27 states, 27 states have (on average 6.111111111111111) internal successors, (165), 26 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) [2024-11-24 00:18:26,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:18:26,453 INFO L93 Difference]: Finished difference Result 17081 states and 22024 transitions. [2024-11-24 00:18:26,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-24 00:18:26,453 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 6.111111111111111) internal successors, (165), 26 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 [2024-11-24 00:18:26,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:18:26,476 INFO L225 Difference]: With dead ends: 17081 [2024-11-24 00:18:26,476 INFO L226 Difference]: Without dead ends: 11437 [2024-11-24 00:18:26,484 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 549 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=637, Invalid=2015, Unknown=0, NotChecked=0, Total=2652 [2024-11-24 00:18:26,487 INFO L435 NwaCegarLoop]: 1514 mSDtfsCounter, 23058 mSDsluCounter, 6516 mSDsCounter, 0 mSdLazyCounter, 512 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23058 SdHoareTripleChecker+Valid, 8030 SdHoareTripleChecker+Invalid, 554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-24 00:18:26,487 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23058 Valid, 8030 Invalid, 554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 512 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-24 00:18:26,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11437 states. [2024-11-24 00:18:26,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11437 to 10831. [2024-11-24 00:18:26,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10831 states, 10829 states have (on average 1.3042755563763968) internal successors, (14124), 10830 states have internal predecessors, (14124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:26,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10831 states to 10831 states and 14124 transitions. [2024-11-24 00:18:26,946 INFO L78 Accepts]: Start accepts. Automaton has 10831 states and 14124 transitions. Word has length 63 [2024-11-24 00:18:26,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:18:26,946 INFO L471 AbstractCegarLoop]: Abstraction has 10831 states and 14124 transitions. [2024-11-24 00:18:26,947 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 6.111111111111111) internal successors, (165), 26 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) [2024-11-24 00:18:26,947 INFO L276 IsEmpty]: Start isEmpty. Operand 10831 states and 14124 transitions. [2024-11-24 00:18:26,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-24 00:18:26,948 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:18:26,948 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:18:26,958 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-24 00:18:27,154 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:18:27,154 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:18:27,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:18:27,155 INFO L85 PathProgramCache]: Analyzing trace with hash 1786741782, now seen corresponding path program 1 times [2024-11-24 00:18:27,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:18:27,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580114348] [2024-11-24 00:18:27,155 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:18:27,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:18:27,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:18:29,368 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:18:29,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:18:29,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580114348] [2024-11-24 00:18:29,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580114348] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:18:29,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [228377371] [2024-11-24 00:18:29,368 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:18:29,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:18:29,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:18:29,373 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:18:29,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-24 00:18:29,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:18:29,514 INFO L256 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-24 00:18:29,517 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:18:32,917 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:18:32,917 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:18:34,985 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:18:34,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [228377371] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:18:34,985 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:18:34,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 18, 15] total 51 [2024-11-24 00:18:34,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061419009] [2024-11-24 00:18:34,985 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:18:34,985 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-11-24 00:18:34,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:18:34,986 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-11-24 00:18:34,987 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=2308, Unknown=0, NotChecked=0, Total=2550 [2024-11-24 00:18:34,987 INFO L87 Difference]: Start difference. First operand 10831 states and 14124 transitions. Second operand has 51 states, 51 states have (on average 3.411764705882353) internal successors, (174), 51 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:19:01,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:19:01,783 INFO L93 Difference]: Finished difference Result 21138 states and 26707 transitions. [2024-11-24 00:19:01,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2024-11-24 00:19:01,788 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 3.411764705882353) internal successors, (174), 51 states have internal predecessors, (174), 0 states have call successors, (0), 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 [2024-11-24 00:19:01,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:19:01,881 INFO L225 Difference]: With dead ends: 21138 [2024-11-24 00:19:01,881 INFO L226 Difference]: Without dead ends: 17394 [2024-11-24 00:19:01,895 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6022 ImplicationChecksByTransitivity, 25.9s TimeCoverageRelationStatistics Valid=4194, Invalid=16398, Unknown=0, NotChecked=0, Total=20592 [2024-11-24 00:19:01,897 INFO L435 NwaCegarLoop]: 1542 mSDtfsCounter, 26465 mSDsluCounter, 16423 mSDsCounter, 0 mSdLazyCounter, 2222 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26465 SdHoareTripleChecker+Valid, 17965 SdHoareTripleChecker+Invalid, 2360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 2222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-24 00:19:01,898 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26465 Valid, 17965 Invalid, 2360 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [138 Valid, 2222 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-24 00:19:01,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17394 states. [2024-11-24 00:19:03,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17394 to 13947. [2024-11-24 00:19:03,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13947 states, 13945 states have (on average 1.289709573323772) internal successors, (17985), 13946 states have internal predecessors, (17985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:19:03,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13947 states to 13947 states and 17985 transitions. [2024-11-24 00:19:03,225 INFO L78 Accepts]: Start accepts. Automaton has 13947 states and 17985 transitions. Word has length 63 [2024-11-24 00:19:03,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:19:03,229 INFO L471 AbstractCegarLoop]: Abstraction has 13947 states and 17985 transitions. [2024-11-24 00:19:03,230 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 3.411764705882353) internal successors, (174), 51 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:19:03,232 INFO L276 IsEmpty]: Start isEmpty. Operand 13947 states and 17985 transitions. [2024-11-24 00:19:03,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-24 00:19:03,239 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:19:03,239 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:19:03,265 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-24 00:19:03,440 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:19:03,441 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:19:03,442 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:19:03,442 INFO L85 PathProgramCache]: Analyzing trace with hash 532152701, now seen corresponding path program 1 times [2024-11-24 00:19:03,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:19:03,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042903293] [2024-11-24 00:19:03,443 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:19:03,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:19:03,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:19:05,446 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:19:05,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:19:05,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042903293] [2024-11-24 00:19:05,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042903293] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:19:05,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1637893166] [2024-11-24 00:19:05,449 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:19:05,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:19:05,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:19:05,454 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:19:05,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-24 00:19:05,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:19:05,615 INFO L256 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-24 00:19:05,619 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:19:07,385 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:19:07,385 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:19:08,382 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:19:08,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1637893166] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:19:08,383 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:19:08,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12, 12] total 34 [2024-11-24 00:19:08,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810926657] [2024-11-24 00:19:08,383 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:19:08,384 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-24 00:19:08,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:19:08,385 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-24 00:19:08,386 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=985, Unknown=0, NotChecked=0, Total=1122 [2024-11-24 00:19:08,387 INFO L87 Difference]: Start difference. First operand 13947 states and 17985 transitions. Second operand has 34 states, 34 states have (on average 5.0) internal successors, (170), 34 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:19:13,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:19:13,091 INFO L93 Difference]: Finished difference Result 18807 states and 23911 transitions. [2024-11-24 00:19:13,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-24 00:19:13,092 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 5.0) internal successors, (170), 34 states have internal predecessors, (170), 0 states have call successors, (0), 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 [2024-11-24 00:19:13,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:19:13,123 INFO L225 Difference]: With dead ends: 18807 [2024-11-24 00:19:13,123 INFO L226 Difference]: Without dead ends: 13060 [2024-11-24 00:19:13,129 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 694 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=822, Invalid=2960, Unknown=0, NotChecked=0, Total=3782 [2024-11-24 00:19:13,135 INFO L435 NwaCegarLoop]: 1517 mSDtfsCounter, 14417 mSDsluCounter, 15499 mSDsCounter, 0 mSdLazyCounter, 992 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14417 SdHoareTripleChecker+Valid, 17016 SdHoareTripleChecker+Invalid, 1025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 992 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:19:13,140 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14417 Valid, 17016 Invalid, 1025 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [33 Valid, 992 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-24 00:19:13,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13060 states. [2024-11-24 00:19:13,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13060 to 10942. [2024-11-24 00:19:13,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10942 states, 10940 states have (on average 1.3036563071297989) internal successors, (14262), 10941 states have internal predecessors, (14262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:19:13,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10942 states to 10942 states and 14262 transitions. [2024-11-24 00:19:13,961 INFO L78 Accepts]: Start accepts. Automaton has 10942 states and 14262 transitions. Word has length 64 [2024-11-24 00:19:13,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:19:13,965 INFO L471 AbstractCegarLoop]: Abstraction has 10942 states and 14262 transitions. [2024-11-24 00:19:13,965 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 5.0) internal successors, (170), 34 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:19:13,965 INFO L276 IsEmpty]: Start isEmpty. Operand 10942 states and 14262 transitions. [2024-11-24 00:19:13,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-24 00:19:13,970 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:19:13,970 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, 1, 1, 1, 1] [2024-11-24 00:19:13,991 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-24 00:19:14,171 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-24 00:19:14,171 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:19:14,172 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:19:14,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1624666796, now seen corresponding path program 1 times [2024-11-24 00:19:14,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:19:14,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809290264] [2024-11-24 00:19:14,180 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:19:14,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:19:14,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:19:16,322 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:19:16,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:19:16,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809290264] [2024-11-24 00:19:16,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809290264] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:19:16,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1121891180] [2024-11-24 00:19:16,323 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:19:16,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:19:16,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:19:16,327 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:19:16,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-24 00:19:16,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:19:16,463 INFO L256 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-24 00:19:16,465 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:19:17,352 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:19:17,353 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:19:19,590 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:19:19,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1121891180] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:19:19,590 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:19:19,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 12, 12] total 42 [2024-11-24 00:19:19,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393106832] [2024-11-24 00:19:19,591 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:19:19,591 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-24 00:19:19,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:19:19,592 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-24 00:19:19,592 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=1593, Unknown=0, NotChecked=0, Total=1722 [2024-11-24 00:19:19,595 INFO L87 Difference]: Start difference. First operand 10942 states and 14262 transitions. Second operand has 42 states, 42 states have (on average 3.880952380952381) internal successors, (163), 42 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:19:31,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:19:31,076 INFO L93 Difference]: Finished difference Result 17682 states and 22469 transitions. [2024-11-24 00:19:31,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2024-11-24 00:19:31,077 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 3.880952380952381) internal successors, (163), 42 states have internal predecessors, (163), 0 states have call successors, (0), 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 [2024-11-24 00:19:31,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:19:31,104 INFO L225 Difference]: With dead ends: 17682 [2024-11-24 00:19:31,104 INFO L226 Difference]: Without dead ends: 12903 [2024-11-24 00:19:31,110 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2078 ImplicationChecksByTransitivity, 10.7s TimeCoverageRelationStatistics Valid=2078, Invalid=7822, Unknown=0, NotChecked=0, Total=9900 [2024-11-24 00:19:31,113 INFO L435 NwaCegarLoop]: 1558 mSDtfsCounter, 15123 mSDsluCounter, 31540 mSDsCounter, 0 mSdLazyCounter, 2455 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15123 SdHoareTripleChecker+Valid, 33098 SdHoareTripleChecker+Invalid, 2524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 2455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:19:31,115 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15123 Valid, 33098 Invalid, 2524 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [69 Valid, 2455 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-24 00:19:31,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12903 states. [2024-11-24 00:19:31,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12903 to 8791. [2024-11-24 00:19:31,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8791 states, 8789 states have (on average 1.3241551939924907) internal successors, (11638), 8790 states have internal predecessors, (11638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:19:31,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8791 states to 8791 states and 11638 transitions. [2024-11-24 00:19:31,984 INFO L78 Accepts]: Start accepts. Automaton has 8791 states and 11638 transitions. Word has length 65 [2024-11-24 00:19:31,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:19:31,986 INFO L471 AbstractCegarLoop]: Abstraction has 8791 states and 11638 transitions. [2024-11-24 00:19:31,986 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 3.880952380952381) internal successors, (163), 42 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:19:31,986 INFO L276 IsEmpty]: Start isEmpty. Operand 8791 states and 11638 transitions. [2024-11-24 00:19:31,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-24 00:19:31,988 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:19:31,988 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:19:32,001 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-24 00:19:32,193 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-24 00:19:32,193 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:19:32,194 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:19:32,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1022152935, now seen corresponding path program 1 times [2024-11-24 00:19:32,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:19:32,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032519611] [2024-11-24 00:19:32,195 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:19:32,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:19:32,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:19:32,398 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:19:32,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:19:32,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032519611] [2024-11-24 00:19:32,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032519611] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:19:32,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:19:32,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:19:32,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586315980] [2024-11-24 00:19:32,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:19:32,401 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:19:32,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:19:32,402 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:19:32,402 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:19:32,402 INFO L87 Difference]: Start difference. First operand 8791 states and 11638 transitions. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:19:39,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:19:39,807 INFO L93 Difference]: Finished difference Result 12548 states and 18528 transitions. [2024-11-24 00:19:39,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:19:39,807 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 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 89 [2024-11-24 00:19:39,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:19:39,828 INFO L225 Difference]: With dead ends: 12548 [2024-11-24 00:19:39,828 INFO L226 Difference]: Without dead ends: 11044 [2024-11-24 00:19:39,830 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 [2024-11-24 00:19:39,831 INFO L435 NwaCegarLoop]: 766 mSDtfsCounter, 2303 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 4805 mSolverCounterSat, 1138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2303 SdHoareTripleChecker+Valid, 786 SdHoareTripleChecker+Invalid, 5943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1138 IncrementalHoareTripleChecker+Valid, 4805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2024-11-24 00:19:39,831 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2303 Valid, 786 Invalid, 5943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1138 Valid, 4805 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2024-11-24 00:19:39,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11044 states. [2024-11-24 00:19:40,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11044 to 11044. [2024-11-24 00:19:40,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11044 states, 11042 states have (on average 1.2884441224415866) internal successors, (14227), 11043 states have internal predecessors, (14227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:19:40,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11044 states to 11044 states and 14227 transitions. [2024-11-24 00:19:40,358 INFO L78 Accepts]: Start accepts. Automaton has 11044 states and 14227 transitions. Word has length 89 [2024-11-24 00:19:40,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:19:40,358 INFO L471 AbstractCegarLoop]: Abstraction has 11044 states and 14227 transitions. [2024-11-24 00:19:40,358 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:19:40,358 INFO L276 IsEmpty]: Start isEmpty. Operand 11044 states and 14227 transitions. [2024-11-24 00:19:40,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-24 00:19:40,360 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:19:40,360 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:19:40,361 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-24 00:19:40,361 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:19:40,361 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:19:40,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1874217900, now seen corresponding path program 1 times [2024-11-24 00:19:40,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:19:40,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22545584] [2024-11-24 00:19:40,362 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:19:40,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:19:40,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:19:40,457 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-24 00:19:40,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:19:40,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22545584] [2024-11-24 00:19:40,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22545584] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:19:40,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:19:40,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-24 00:19:40,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880700462] [2024-11-24 00:19:40,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:19:40,459 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:19:40,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:19:40,459 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:19:40,459 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:19:40,460 INFO L87 Difference]: Start difference. First operand 11044 states and 14227 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:19:44,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:19:44,844 INFO L93 Difference]: Finished difference Result 15552 states and 21610 transitions. [2024-11-24 00:19:44,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:19:44,844 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 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 91 [2024-11-24 00:19:44,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:19:44,866 INFO L225 Difference]: With dead ends: 15552 [2024-11-24 00:19:44,867 INFO L226 Difference]: Without dead ends: 12546 [2024-11-24 00:19:44,870 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:19:44,871 INFO L435 NwaCegarLoop]: 539 mSDtfsCounter, 797 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2261 mSolverCounterSat, 652 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 797 SdHoareTripleChecker+Valid, 546 SdHoareTripleChecker+Invalid, 2913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 652 IncrementalHoareTripleChecker+Valid, 2261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2024-11-24 00:19:44,871 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [797 Valid, 546 Invalid, 2913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [652 Valid, 2261 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2024-11-24 00:19:44,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12546 states. [2024-11-24 00:19:45,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12546 to 12546. [2024-11-24 00:19:45,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12546 states, 12544 states have (on average 1.2873883928571428) internal successors, (16149), 12545 states have internal predecessors, (16149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:19:45,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12546 states to 12546 states and 16149 transitions. [2024-11-24 00:19:45,505 INFO L78 Accepts]: Start accepts. Automaton has 12546 states and 16149 transitions. Word has length 91 [2024-11-24 00:19:45,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:19:45,506 INFO L471 AbstractCegarLoop]: Abstraction has 12546 states and 16149 transitions. [2024-11-24 00:19:45,506 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:19:45,506 INFO L276 IsEmpty]: Start isEmpty. Operand 12546 states and 16149 transitions. [2024-11-24 00:19:45,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-24 00:19:45,508 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:19:45,509 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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] [2024-11-24 00:19:45,509 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-24 00:19:45,509 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:19:45,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:19:45,510 INFO L85 PathProgramCache]: Analyzing trace with hash 1065912349, now seen corresponding path program 1 times [2024-11-24 00:19:45,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:19:45,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666652288] [2024-11-24 00:19:45,510 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:19:45,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:19:45,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:19:46,366 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 31 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:19:46,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:19:46,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666652288] [2024-11-24 00:19:46,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666652288] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:19:46,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [695592759] [2024-11-24 00:19:46,367 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:19:46,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:19:46,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:19:46,369 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:19:46,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-24 00:19:46,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:19:46,530 INFO L256 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-24 00:19:46,537 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:19:47,478 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 33 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:19:47,479 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:19:49,439 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 31 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:19:49,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [695592759] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:19:49,439 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:19:49,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 26 [2024-11-24 00:19:49,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400043220] [2024-11-24 00:19:49,440 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:19:49,440 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-24 00:19:49,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:19:49,441 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-24 00:19:49,441 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=597, Unknown=0, NotChecked=0, Total=702 [2024-11-24 00:19:49,442 INFO L87 Difference]: Start difference. First operand 12546 states and 16149 transitions. Second operand has 27 states, 27 states have (on average 8.333333333333334) internal successors, (225), 26 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:19:50,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:19:50,706 INFO L93 Difference]: Finished difference Result 17462 states and 22205 transitions. [2024-11-24 00:19:50,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-24 00:19:50,706 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 8.333333333333334) internal successors, (225), 26 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2024-11-24 00:19:50,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:19:50,718 INFO L225 Difference]: With dead ends: 17462 [2024-11-24 00:19:50,718 INFO L226 Difference]: Without dead ends: 12866 [2024-11-24 00:19:50,724 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 191 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=343, Invalid=1217, Unknown=0, NotChecked=0, Total=1560 [2024-11-24 00:19:50,725 INFO L435 NwaCegarLoop]: 1515 mSDtfsCounter, 13412 mSDsluCounter, 9159 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13412 SdHoareTripleChecker+Valid, 10674 SdHoareTripleChecker+Invalid, 427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 00:19:50,725 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13412 Valid, 10674 Invalid, 427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 405 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 00:19:50,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12866 states. [2024-11-24 00:19:51,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12866 to 12546. [2024-11-24 00:19:51,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12546 states, 12544 states have (on average 1.2808514030612246) internal successors, (16067), 12545 states have internal predecessors, (16067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:19:51,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12546 states to 12546 states and 16067 transitions. [2024-11-24 00:19:51,380 INFO L78 Accepts]: Start accepts. Automaton has 12546 states and 16067 transitions. Word has length 103 [2024-11-24 00:19:51,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:19:51,381 INFO L471 AbstractCegarLoop]: Abstraction has 12546 states and 16067 transitions. [2024-11-24 00:19:51,381 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 8.333333333333334) internal successors, (225), 26 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:19:51,381 INFO L276 IsEmpty]: Start isEmpty. Operand 12546 states and 16067 transitions. [2024-11-24 00:19:51,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-24 00:19:51,384 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:19:51,384 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:19:51,395 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-24 00:19:51,588 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-24 00:19:51,588 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:19:51,589 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:19:51,590 INFO L85 PathProgramCache]: Analyzing trace with hash 1754049935, now seen corresponding path program 1 times [2024-11-24 00:19:51,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:19:51,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111226960] [2024-11-24 00:19:51,590 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:19:51,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:19:51,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:19:52,490 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 34 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:19:52,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:19:52,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111226960] [2024-11-24 00:19:52,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111226960] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:19:52,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [673416544] [2024-11-24 00:19:52,492 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:19:52,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:19:52,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:19:52,494 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:19:52,497 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-24 00:19:52,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:19:52,695 INFO L256 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-24 00:19:52,705 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:19:53,759 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 38 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:19:53,759 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:19:55,298 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 34 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:19:55,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [673416544] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:19:55,298 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:19:55,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 26 [2024-11-24 00:19:55,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174171637] [2024-11-24 00:19:55,298 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:19:55,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-24 00:19:55,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:19:55,301 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-24 00:19:55,301 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=602, Unknown=0, NotChecked=0, Total=702 [2024-11-24 00:19:55,301 INFO L87 Difference]: Start difference. First operand 12546 states and 16067 transitions. Second operand has 27 states, 27 states have (on average 8.037037037037036) internal successors, (217), 26 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:19:56,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:19:56,753 INFO L93 Difference]: Finished difference Result 16811 states and 21257 transitions. [2024-11-24 00:19:56,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-24 00:19:56,753 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 8.037037037037036) internal successors, (217), 26 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2024-11-24 00:19:56,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:19:56,766 INFO L225 Difference]: With dead ends: 16811 [2024-11-24 00:19:56,766 INFO L226 Difference]: Without dead ends: 12632 [2024-11-24 00:19:56,770 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=347, Invalid=1293, Unknown=0, NotChecked=0, Total=1640 [2024-11-24 00:19:56,771 INFO L435 NwaCegarLoop]: 1515 mSDtfsCounter, 13398 mSDsluCounter, 10672 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13398 SdHoareTripleChecker+Valid, 12187 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-24 00:19:56,771 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13398 Valid, 12187 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-24 00:19:56,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12632 states. [2024-11-24 00:19:57,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12632 to 12546. [2024-11-24 00:19:57,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12546 states, 12544 states have (on average 1.2764668367346939) internal successors, (16012), 12545 states have internal predecessors, (16012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:19:57,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12546 states to 12546 states and 16012 transitions. [2024-11-24 00:19:57,494 INFO L78 Accepts]: Start accepts. Automaton has 12546 states and 16012 transitions. Word has length 103 [2024-11-24 00:19:57,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:19:57,494 INFO L471 AbstractCegarLoop]: Abstraction has 12546 states and 16012 transitions. [2024-11-24 00:19:57,494 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 8.037037037037036) internal successors, (217), 26 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:19:57,494 INFO L276 IsEmpty]: Start isEmpty. Operand 12546 states and 16012 transitions. [2024-11-24 00:19:57,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-24 00:19:57,496 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:19:57,496 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:19:57,507 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-24 00:19:57,697 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:19:57,697 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:19:57,697 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:19:57,697 INFO L85 PathProgramCache]: Analyzing trace with hash 856710688, now seen corresponding path program 1 times [2024-11-24 00:19:57,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:19:57,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652173529] [2024-11-24 00:19:57,698 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:19:57,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:19:57,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:19:59,296 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 57 proven. 6 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-24 00:19:59,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:19:59,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652173529] [2024-11-24 00:19:59,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652173529] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:19:59,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1023471772] [2024-11-24 00:19:59,296 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:19:59,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:19:59,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:19:59,300 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:19:59,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-24 00:19:59,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:19:59,441 INFO L256 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-24 00:19:59,443 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:20:01,178 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 25 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:20:01,178 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:20:05,163 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 25 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:20:05,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1023471772] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:20:05,164 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:20:05,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 52 [2024-11-24 00:20:05,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560107271] [2024-11-24 00:20:05,164 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:20:05,164 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-11-24 00:20:05,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:20:05,165 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-11-24 00:20:05,165 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=2423, Unknown=0, NotChecked=0, Total=2652 [2024-11-24 00:20:05,166 INFO L87 Difference]: Start difference. First operand 12546 states and 16012 transitions. Second operand has 52 states, 52 states have (on average 5.173076923076923) internal successors, (269), 52 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:20:30,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:20:30,285 INFO L93 Difference]: Finished difference Result 18644 states and 23275 transitions. [2024-11-24 00:20:30,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2024-11-24 00:20:30,324 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 5.173076923076923) internal successors, (269), 52 states have internal predecessors, (269), 0 states have call successors, (0), 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 [2024-11-24 00:20:30,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:20:30,334 INFO L225 Difference]: With dead ends: 18644 [2024-11-24 00:20:30,334 INFO L226 Difference]: Without dead ends: 14728 [2024-11-24 00:20:30,339 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9886 ImplicationChecksByTransitivity, 22.7s TimeCoverageRelationStatistics Valid=5256, Invalid=28416, Unknown=0, NotChecked=0, Total=33672 [2024-11-24 00:20:30,340 INFO L435 NwaCegarLoop]: 1686 mSDtfsCounter, 28171 mSDsluCounter, 30665 mSDsCounter, 0 mSdLazyCounter, 3760 mSolverCounterSat, 293 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28171 SdHoareTripleChecker+Valid, 32351 SdHoareTripleChecker+Invalid, 4053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 293 IncrementalHoareTripleChecker+Valid, 3760 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-24 00:20:30,340 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [28171 Valid, 32351 Invalid, 4053 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [293 Valid, 3760 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-11-24 00:20:30,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14728 states. [2024-11-24 00:20:31,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14728 to 12190. [2024-11-24 00:20:31,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12190 states, 12188 states have (on average 1.2749425664588119) internal successors, (15539), 12189 states have internal predecessors, (15539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:20:31,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12190 states to 12190 states and 15539 transitions. [2024-11-24 00:20:31,077 INFO L78 Accepts]: Start accepts. Automaton has 12190 states and 15539 transitions. Word has length 104 [2024-11-24 00:20:31,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:20:31,077 INFO L471 AbstractCegarLoop]: Abstraction has 12190 states and 15539 transitions. [2024-11-24 00:20:31,077 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 5.173076923076923) internal successors, (269), 52 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:20:31,077 INFO L276 IsEmpty]: Start isEmpty. Operand 12190 states and 15539 transitions. [2024-11-24 00:20:31,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-24 00:20:31,079 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:20:31,079 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:20:31,088 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-24 00:20:31,279 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-24 00:20:31,280 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:20:31,280 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:20:31,280 INFO L85 PathProgramCache]: Analyzing trace with hash -1395528875, now seen corresponding path program 1 times [2024-11-24 00:20:31,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:20:31,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636105271] [2024-11-24 00:20:31,281 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:20:31,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:20:31,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:20:32,670 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 25 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:20:32,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:20:32,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636105271] [2024-11-24 00:20:32,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636105271] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:20:32,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [333901706] [2024-11-24 00:20:32,671 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:20:32,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:20:32,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:20:32,673 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:20:32,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-24 00:20:32,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:20:32,819 INFO L256 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-24 00:20:32,821 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:20:34,864 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 35 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:20:34,864 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:20:38,787 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 35 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:20:38,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [333901706] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:20:38,787 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:20:38,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 18, 17] total 54 [2024-11-24 00:20:38,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018935326] [2024-11-24 00:20:38,788 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:20:38,788 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-11-24 00:20:38,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:20:38,789 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-11-24 00:20:38,790 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=2630, Unknown=0, NotChecked=0, Total=2862 [2024-11-24 00:20:38,790 INFO L87 Difference]: Start difference. First operand 12190 states and 15539 transitions. Second operand has 54 states, 54 states have (on average 5.277777777777778) internal successors, (285), 54 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:21:22,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:21:22,320 INFO L93 Difference]: Finished difference Result 21086 states and 26207 transitions. [2024-11-24 00:21:22,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 173 states. [2024-11-24 00:21:22,321 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 5.277777777777778) internal successors, (285), 54 states have internal predecessors, (285), 0 states have call successors, (0), 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 [2024-11-24 00:21:22,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:21:22,333 INFO L225 Difference]: With dead ends: 21086 [2024-11-24 00:21:22,334 INFO L226 Difference]: Without dead ends: 17022 [2024-11-24 00:21:22,341 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 403 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 223 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15919 ImplicationChecksByTransitivity, 40.9s TimeCoverageRelationStatistics Valid=8347, Invalid=42053, Unknown=0, NotChecked=0, Total=50400 [2024-11-24 00:21:22,342 INFO L435 NwaCegarLoop]: 1611 mSDtfsCounter, 28752 mSDsluCounter, 39193 mSDsCounter, 0 mSdLazyCounter, 3236 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28752 SdHoareTripleChecker+Valid, 40804 SdHoareTripleChecker+Invalid, 3392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 3236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-11-24 00:21:22,342 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [28752 Valid, 40804 Invalid, 3392 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [156 Valid, 3236 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-11-24 00:21:22,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17022 states. [2024-11-24 00:21:23,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17022 to 16738. [2024-11-24 00:21:23,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16738 states, 16736 states have (on average 1.25256931166348) internal successors, (20963), 16737 states have internal predecessors, (20963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:21:23,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16738 states to 16738 states and 20963 transitions. [2024-11-24 00:21:23,618 INFO L78 Accepts]: Start accepts. Automaton has 16738 states and 20963 transitions. Word has length 105 [2024-11-24 00:21:23,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:21:23,618 INFO L471 AbstractCegarLoop]: Abstraction has 16738 states and 20963 transitions. [2024-11-24 00:21:23,618 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 5.277777777777778) internal successors, (285), 54 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:21:23,618 INFO L276 IsEmpty]: Start isEmpty. Operand 16738 states and 20963 transitions. [2024-11-24 00:21:23,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-24 00:21:23,620 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:21:23,620 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-24 00:21:23,633 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-24 00:21:23,820 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-24 00:21:23,821 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:21:23,821 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:21:23,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1969661904, now seen corresponding path program 1 times [2024-11-24 00:21:23,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:21:23,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545882220] [2024-11-24 00:21:23,821 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:21:23,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:21:23,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:21:25,561 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 40 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:21:25,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:21:25,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545882220] [2024-11-24 00:21:25,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545882220] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:21:25,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401751588] [2024-11-24 00:21:25,562 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:21:25,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:21:25,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:21:25,564 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:21:25,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-24 00:21:25,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:21:25,711 INFO L256 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-11-24 00:21:25,713 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:21:30,114 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 40 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:21:30,114 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:21:39,920 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 40 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:21:39,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1401751588] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:21:39,920 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:21:39,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 28, 27] total 76 [2024-11-24 00:21:39,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954565546] [2024-11-24 00:21:39,921 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:21:39,921 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2024-11-24 00:21:39,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:21:39,922 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2024-11-24 00:21:39,922 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=559, Invalid=5141, Unknown=0, NotChecked=0, Total=5700 [2024-11-24 00:21:39,923 INFO L87 Difference]: Start difference. First operand 16738 states and 20963 transitions. Second operand has 76 states, 76 states have (on average 3.6710526315789473) internal successors, (279), 76 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:22:44,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:22:44,126 INFO L93 Difference]: Finished difference Result 31611 states and 38803 transitions. [2024-11-24 00:22:44,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 169 states. [2024-11-24 00:22:44,127 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 3.6710526315789473) internal successors, (279), 76 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2024-11-24 00:22:44,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:22:44,142 INFO L225 Difference]: With dead ends: 31611 [2024-11-24 00:22:44,142 INFO L226 Difference]: Without dead ends: 22445 [2024-11-24 00:22:44,150 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 160 SyntacticMatches, 2 SemanticMatches, 232 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18854 ImplicationChecksByTransitivity, 64.0s TimeCoverageRelationStatistics Valid=9117, Invalid=45405, Unknown=0, NotChecked=0, Total=54522 [2024-11-24 00:22:44,151 INFO L435 NwaCegarLoop]: 1646 mSDtfsCounter, 23331 mSDsluCounter, 31113 mSDsCounter, 0 mSdLazyCounter, 3983 mSolverCounterSat, 177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23331 SdHoareTripleChecker+Valid, 32759 SdHoareTripleChecker+Invalid, 4160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 177 IncrementalHoareTripleChecker+Valid, 3983 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-11-24 00:22:44,151 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23331 Valid, 32759 Invalid, 4160 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [177 Valid, 3983 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2024-11-24 00:22:44,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22445 states. [2024-11-24 00:22:45,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22445 to 19099. [2024-11-24 00:22:45,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19099 states, 19097 states have (on average 1.2449075771063518) internal successors, (23774), 19098 states have internal predecessors, (23774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:22:45,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19099 states to 19099 states and 23774 transitions. [2024-11-24 00:22:45,511 INFO L78 Accepts]: Start accepts. Automaton has 19099 states and 23774 transitions. Word has length 106 [2024-11-24 00:22:45,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:22:45,511 INFO L471 AbstractCegarLoop]: Abstraction has 19099 states and 23774 transitions. [2024-11-24 00:22:45,512 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 3.6710526315789473) internal successors, (279), 76 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:22:45,512 INFO L276 IsEmpty]: Start isEmpty. Operand 19099 states and 23774 transitions. [2024-11-24 00:22:45,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-24 00:22:45,513 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:22:45,513 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:22:45,520 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-24 00:22:45,713 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:22:45,714 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:22:45,714 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:22:45,714 INFO L85 PathProgramCache]: Analyzing trace with hash -1775421751, now seen corresponding path program 1 times [2024-11-24 00:22:45,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:22:45,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101398917] [2024-11-24 00:22:45,714 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:22:45,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:22:45,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:22:46,328 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 22 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:22:46,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:22:46,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101398917] [2024-11-24 00:22:46,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101398917] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:22:46,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [601686298] [2024-11-24 00:22:46,329 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:22:46,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:22:46,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:22:46,331 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:22:46,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-24 00:22:46,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:22:46,486 INFO L256 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-24 00:22:46,488 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:22:48,493 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 26 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:22:48,494 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:22:51,167 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 23 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:22:51,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [601686298] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:22:51,167 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:22:51,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 18, 17] total 44 [2024-11-24 00:22:51,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577828115] [2024-11-24 00:22:51,167 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:22:51,168 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-24 00:22:51,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:22:51,168 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-24 00:22:51,168 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=1688, Unknown=0, NotChecked=0, Total=1892 [2024-11-24 00:22:51,169 INFO L87 Difference]: Start difference. First operand 19099 states and 23774 transitions. Second operand has 44 states, 44 states have (on average 6.545454545454546) internal successors, (288), 44 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:22:56,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:22:56,940 INFO L93 Difference]: Finished difference Result 40208 states and 49125 transitions. [2024-11-24 00:22:56,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-24 00:22:56,941 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 6.545454545454546) internal successors, (288), 44 states have internal predecessors, (288), 0 states have call successors, (0), 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 [2024-11-24 00:22:56,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:22:56,972 INFO L225 Difference]: With dead ends: 40208 [2024-11-24 00:22:56,972 INFO L226 Difference]: Without dead ends: 29015 [2024-11-24 00:22:56,979 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 184 SyntacticMatches, 1 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1320 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=1232, Invalid=5088, Unknown=0, NotChecked=0, Total=6320 [2024-11-24 00:22:56,980 INFO L435 NwaCegarLoop]: 1573 mSDtfsCounter, 24058 mSDsluCounter, 20657 mSDsCounter, 0 mSdLazyCounter, 1279 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24058 SdHoareTripleChecker+Valid, 22230 SdHoareTripleChecker+Invalid, 1334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:22:56,980 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [24058 Valid, 22230 Invalid, 1334 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [55 Valid, 1279 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-24 00:22:56,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29015 states. [2024-11-24 00:22:59,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29015 to 26683. [2024-11-24 00:22:59,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26683 states, 26681 states have (on average 1.2280649151081293) internal successors, (32766), 26682 states have internal predecessors, (32766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:22:59,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26683 states to 26683 states and 32766 transitions. [2024-11-24 00:22:59,563 INFO L78 Accepts]: Start accepts. Automaton has 26683 states and 32766 transitions. Word has length 107 [2024-11-24 00:22:59,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:22:59,564 INFO L471 AbstractCegarLoop]: Abstraction has 26683 states and 32766 transitions. [2024-11-24 00:22:59,564 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 6.545454545454546) internal successors, (288), 44 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:22:59,564 INFO L276 IsEmpty]: Start isEmpty. Operand 26683 states and 32766 transitions. [2024-11-24 00:22:59,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-24 00:22:59,566 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:22:59,566 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:22:59,572 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-24 00:22:59,766 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:22:59,766 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:22:59,767 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:22:59,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1570064813, now seen corresponding path program 1 times [2024-11-24 00:22:59,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:22:59,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247289363] [2024-11-24 00:22:59,767 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:22:59,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:22:59,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:23:00,403 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 31 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:23:00,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:23:00,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247289363] [2024-11-24 00:23:00,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247289363] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:23:00,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [760395859] [2024-11-24 00:23:00,403 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:23:00,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:23:00,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:23:00,408 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:23:00,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-24 00:23:00,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:23:00,629 INFO L256 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-24 00:23:00,630 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:23:02,436 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 33 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:23:02,437 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:23:04,492 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 34 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:23:04,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [760395859] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:23:04,493 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:23:04,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 17, 16] total 43 [2024-11-24 00:23:04,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908834015] [2024-11-24 00:23:04,493 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:23:04,494 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-24 00:23:04,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:23:04,494 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-24 00:23:04,494 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=1592, Unknown=0, NotChecked=0, Total=1806 [2024-11-24 00:23:04,495 INFO L87 Difference]: Start difference. First operand 26683 states and 32766 transitions. Second operand has 43 states, 43 states have (on average 6.6976744186046515) internal successors, (288), 43 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:23:10,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:23:10,146 INFO L93 Difference]: Finished difference Result 47289 states and 57565 transitions. [2024-11-24 00:23:10,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-24 00:23:10,146 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 6.6976744186046515) internal successors, (288), 43 states have internal predecessors, (288), 0 states have call successors, (0), 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 [2024-11-24 00:23:10,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:23:10,169 INFO L225 Difference]: With dead ends: 47289 [2024-11-24 00:23:10,169 INFO L226 Difference]: Without dead ends: 30269 [2024-11-24 00:23:10,178 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 185 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1089 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1021, Invalid=4235, Unknown=0, NotChecked=0, Total=5256 [2024-11-24 00:23:10,180 INFO L435 NwaCegarLoop]: 1575 mSDtfsCounter, 23989 mSDsluCounter, 17272 mSDsCounter, 0 mSdLazyCounter, 931 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23989 SdHoareTripleChecker+Valid, 18847 SdHoareTripleChecker+Invalid, 977 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 931 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-24 00:23:10,180 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23989 Valid, 18847 Invalid, 977 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 931 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-24 00:23:10,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30269 states. [2024-11-24 00:23:12,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30269 to 30100. [2024-11-24 00:23:12,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30100 states, 30098 states have (on average 1.221542959665094) internal successors, (36766), 30099 states have internal predecessors, (36766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:23:12,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30100 states to 30100 states and 36766 transitions. [2024-11-24 00:23:12,884 INFO L78 Accepts]: Start accepts. Automaton has 30100 states and 36766 transitions. Word has length 107 [2024-11-24 00:23:12,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:23:12,885 INFO L471 AbstractCegarLoop]: Abstraction has 30100 states and 36766 transitions. [2024-11-24 00:23:12,885 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 6.6976744186046515) internal successors, (288), 43 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:23:12,885 INFO L276 IsEmpty]: Start isEmpty. Operand 30100 states and 36766 transitions. [2024-11-24 00:23:12,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-24 00:23:12,886 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:23:12,886 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:23:12,897 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-24 00:23:13,087 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:23:13,087 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:23:13,088 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:23:13,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1360080118, now seen corresponding path program 1 times [2024-11-24 00:23:13,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:23:13,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49934156] [2024-11-24 00:23:13,088 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:23:13,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:23:13,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:23:15,219 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 32 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:23:15,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:23:15,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49934156] [2024-11-24 00:23:15,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49934156] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:23:15,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [944958755] [2024-11-24 00:23:15,219 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:23:15,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:23:15,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:23:15,221 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:23:15,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-24 00:23:15,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:23:15,376 INFO L256 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-24 00:23:15,378 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:23:19,020 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 32 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:23:19,020 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:23:23,086 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 32 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:23:23,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [944958755] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:23:23,086 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:23:23,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 20, 19] total 61 [2024-11-24 00:23:23,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419477953] [2024-11-24 00:23:23,087 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:23:23,087 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2024-11-24 00:23:23,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:23:23,088 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2024-11-24 00:23:23,088 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=243, Invalid=3417, Unknown=0, NotChecked=0, Total=3660 [2024-11-24 00:23:23,088 INFO L87 Difference]: Start difference. First operand 30100 states and 36766 transitions. Second operand has 61 states, 61 states have (on average 4.475409836065574) internal successors, (273), 61 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:23:54,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:23:54,565 INFO L93 Difference]: Finished difference Result 52315 states and 63382 transitions. [2024-11-24 00:23:54,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2024-11-24 00:23:54,566 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 4.475409836065574) internal successors, (273), 61 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2024-11-24 00:23:54,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:23:54,595 INFO L225 Difference]: With dead ends: 52315 [2024-11-24 00:23:54,595 INFO L226 Difference]: Without dead ends: 43795 [2024-11-24 00:23:54,602 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9504 ImplicationChecksByTransitivity, 26.7s TimeCoverageRelationStatistics Valid=5157, Invalid=29253, Unknown=0, NotChecked=0, Total=34410 [2024-11-24 00:23:54,603 INFO L435 NwaCegarLoop]: 1652 mSDtfsCounter, 32367 mSDsluCounter, 34239 mSDsCounter, 0 mSdLazyCounter, 3750 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32367 SdHoareTripleChecker+Valid, 35891 SdHoareTripleChecker+Invalid, 3903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 3750 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-11-24 00:23:54,603 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [32367 Valid, 35891 Invalid, 3903 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [153 Valid, 3750 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-11-24 00:23:54,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43795 states. [2024-11-24 00:23:58,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43795 to 29109. [2024-11-24 00:23:58,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29109 states, 29107 states have (on average 1.2217679595973476) internal successors, (35562), 29108 states have internal predecessors, (35562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:23:58,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29109 states to 29109 states and 35562 transitions. [2024-11-24 00:23:58,127 INFO L78 Accepts]: Start accepts. Automaton has 29109 states and 35562 transitions. Word has length 108 [2024-11-24 00:23:58,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:23:58,127 INFO L471 AbstractCegarLoop]: Abstraction has 29109 states and 35562 transitions. [2024-11-24 00:23:58,127 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 4.475409836065574) internal successors, (273), 61 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:23:58,127 INFO L276 IsEmpty]: Start isEmpty. Operand 29109 states and 35562 transitions. [2024-11-24 00:23:58,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-24 00:23:58,129 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:23:58,129 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:23:58,138 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-24 00:23:58,329 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-11-24 00:23:58,329 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:23:58,330 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:23:58,330 INFO L85 PathProgramCache]: Analyzing trace with hash 1868806128, now seen corresponding path program 1 times [2024-11-24 00:23:58,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:23:58,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657171122] [2024-11-24 00:23:58,330 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:23:58,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:23:58,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:23:59,431 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 22 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:23:59,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:23:59,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657171122] [2024-11-24 00:23:59,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657171122] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:23:59,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [362643902] [2024-11-24 00:23:59,431 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:23:59,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:23:59,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:23:59,433 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:23:59,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-24 00:23:59,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:23:59,580 INFO L256 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-24 00:23:59,582 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:24:00,676 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 33 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:24:00,676 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:24:04,388 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 34 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:24:04,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [362643902] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:24:04,388 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:24:04,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 13, 13] total 43 [2024-11-24 00:24:04,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900261557] [2024-11-24 00:24:04,388 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:24:04,389 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-24 00:24:04,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:24:04,389 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-24 00:24:04,390 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=1635, Unknown=0, NotChecked=0, Total=1806 [2024-11-24 00:24:04,390 INFO L87 Difference]: Start difference. First operand 29109 states and 35562 transitions. Second operand has 43 states, 43 states have (on average 6.976744186046512) internal successors, (300), 43 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) [2024-11-24 00:24:25,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:24:25,355 INFO L93 Difference]: Finished difference Result 56284 states and 67993 transitions. [2024-11-24 00:24:25,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2024-11-24 00:24:25,355 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 6.976744186046512) internal successors, (300), 43 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 108 [2024-11-24 00:24:25,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:24:25,401 INFO L225 Difference]: With dead ends: 56284 [2024-11-24 00:24:25,401 INFO L226 Difference]: Without dead ends: 38158 [2024-11-24 00:24:25,416 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6714 ImplicationChecksByTransitivity, 16.2s TimeCoverageRelationStatistics Valid=3549, Invalid=19707, Unknown=0, NotChecked=0, Total=23256 [2024-11-24 00:24:25,417 INFO L435 NwaCegarLoop]: 1625 mSDtfsCounter, 17799 mSDsluCounter, 27643 mSDsCounter, 0 mSdLazyCounter, 2755 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17799 SdHoareTripleChecker+Valid, 29268 SdHoareTripleChecker+Invalid, 2851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 2755 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-24 00:24:25,417 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17799 Valid, 29268 Invalid, 2851 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [96 Valid, 2755 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-24 00:24:25,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38158 states. [2024-11-24 00:24:29,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38158 to 35789. [2024-11-24 00:24:29,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35789 states, 35787 states have (on average 1.2111101796741834) internal successors, (43342), 35788 states have internal predecessors, (43342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:24:29,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35789 states to 35789 states and 43342 transitions. [2024-11-24 00:24:29,168 INFO L78 Accepts]: Start accepts. Automaton has 35789 states and 43342 transitions. Word has length 108 [2024-11-24 00:24:29,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:24:29,169 INFO L471 AbstractCegarLoop]: Abstraction has 35789 states and 43342 transitions. [2024-11-24 00:24:29,169 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 6.976744186046512) internal successors, (300), 43 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) [2024-11-24 00:24:29,169 INFO L276 IsEmpty]: Start isEmpty. Operand 35789 states and 43342 transitions. [2024-11-24 00:24:29,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-24 00:24:29,170 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:24:29,170 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:24:29,180 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-24 00:24:29,370 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-11-24 00:24:29,371 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:24:29,371 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:24:29,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1776708174, now seen corresponding path program 1 times [2024-11-24 00:24:29,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:24:29,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239977328] [2024-11-24 00:24:29,371 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:24:29,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:24:29,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:24:31,187 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 41 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:24:31,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:24:31,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239977328] [2024-11-24 00:24:31,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239977328] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:24:31,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1877836479] [2024-11-24 00:24:31,188 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:24:31,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:24:31,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:24:31,190 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:24:31,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-24 00:24:31,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:24:31,355 INFO L256 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-11-24 00:24:31,358 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:24:36,527 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 42 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:24:36,527 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:24:46,429 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 41 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:24:46,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1877836479] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:24:46,429 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:24:46,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 29, 27] total 75 [2024-11-24 00:24:46,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709008964] [2024-11-24 00:24:46,429 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:24:46,430 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2024-11-24 00:24:46,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:24:46,430 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2024-11-24 00:24:46,431 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=506, Invalid=5044, Unknown=0, NotChecked=0, Total=5550 [2024-11-24 00:24:46,431 INFO L87 Difference]: Start difference. First operand 35789 states and 43342 transitions. Second operand has 75 states, 75 states have (on average 3.5733333333333333) internal successors, (268), 75 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:26:05,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:26:05,347 INFO L93 Difference]: Finished difference Result 66564 states and 79777 transitions. [2024-11-24 00:26:05,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 268 states. [2024-11-24 00:26:05,348 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 3.5733333333333333) internal successors, (268), 75 states have internal predecessors, (268), 0 states have call successors, (0), 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 108 [2024-11-24 00:26:05,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:26:05,390 INFO L225 Difference]: With dead ends: 66564 [2024-11-24 00:26:05,390 INFO L226 Difference]: Without dead ends: 52684 [2024-11-24 00:26:05,404 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 507 GetRequests, 164 SyntacticMatches, 4 SemanticMatches, 339 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46582 ImplicationChecksByTransitivity, 71.2s TimeCoverageRelationStatistics Valid=18100, Invalid=97840, Unknown=0, NotChecked=0, Total=115940 [2024-11-24 00:26:05,406 INFO L435 NwaCegarLoop]: 1692 mSDtfsCounter, 21438 mSDsluCounter, 45222 mSDsCounter, 0 mSdLazyCounter, 6912 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21438 SdHoareTripleChecker+Valid, 46914 SdHoareTripleChecker+Invalid, 7103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 6912 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2024-11-24 00:26:05,406 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [21438 Valid, 46914 Invalid, 7103 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [191 Valid, 6912 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2024-11-24 00:26:05,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52684 states. [2024-11-24 00:26:09,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52684 to 37447. [2024-11-24 00:26:09,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37447 states, 37445 states have (on average 1.2104686874081987) internal successors, (45326), 37446 states have internal predecessors, (45326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:26:09,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37447 states to 37447 states and 45326 transitions. [2024-11-24 00:26:09,900 INFO L78 Accepts]: Start accepts. Automaton has 37447 states and 45326 transitions. Word has length 108 [2024-11-24 00:26:09,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:26:09,901 INFO L471 AbstractCegarLoop]: Abstraction has 37447 states and 45326 transitions. [2024-11-24 00:26:09,901 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 3.5733333333333333) internal successors, (268), 75 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:26:09,901 INFO L276 IsEmpty]: Start isEmpty. Operand 37447 states and 45326 transitions. [2024-11-24 00:26:09,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-24 00:26:09,903 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:26:09,903 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:26:09,914 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-24 00:26:10,103 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:26:10,103 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:26:10,104 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:26:10,104 INFO L85 PathProgramCache]: Analyzing trace with hash 289672907, now seen corresponding path program 1 times [2024-11-24 00:26:10,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:26:10,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547738264] [2024-11-24 00:26:10,104 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:26:10,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:26:10,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:26:11,472 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 67 proven. 179 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:26:11,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:26:11,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547738264] [2024-11-24 00:26:11,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547738264] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:26:11,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2014307239] [2024-11-24 00:26:11,473 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:26:11,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:26:11,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:26:11,475 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:26:11,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-24 00:26:11,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:26:11,655 INFO L256 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-24 00:26:11,658 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:26:12,547 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 80 proven. 147 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-24 00:26:12,548 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:26:15,048 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 37 proven. 190 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-24 00:26:15,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2014307239] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:26:15,048 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:26:15,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 11, 11] total 43 [2024-11-24 00:26:15,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367558176] [2024-11-24 00:26:15,049 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:26:15,049 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-24 00:26:15,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:26:15,050 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-24 00:26:15,050 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=1731, Unknown=0, NotChecked=0, Total=1892 [2024-11-24 00:26:15,050 INFO L87 Difference]: Start difference. First operand 37447 states and 45326 transitions. Second operand has 44 states, 44 states have (on average 8.909090909090908) internal successors, (392), 43 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:26:30,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:26:30,880 INFO L93 Difference]: Finished difference Result 50848 states and 61412 transitions. [2024-11-24 00:26:30,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2024-11-24 00:26:30,881 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 8.909090909090908) internal successors, (392), 43 states have internal predecessors, (392), 0 states have call successors, (0), 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 146 [2024-11-24 00:26:30,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:26:30,907 INFO L225 Difference]: With dead ends: 50848 [2024-11-24 00:26:30,908 INFO L226 Difference]: Without dead ends: 37541 [2024-11-24 00:26:30,915 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 271 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4283 ImplicationChecksByTransitivity, 10.1s TimeCoverageRelationStatistics Valid=3290, Invalid=13480, Unknown=0, NotChecked=0, Total=16770 [2024-11-24 00:26:30,915 INFO L435 NwaCegarLoop]: 1585 mSDtfsCounter, 32119 mSDsluCounter, 16573 mSDsCounter, 0 mSdLazyCounter, 1945 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32119 SdHoareTripleChecker+Valid, 18158 SdHoareTripleChecker+Invalid, 2025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1945 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-24 00:26:30,915 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [32119 Valid, 18158 Invalid, 2025 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [80 Valid, 1945 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-24 00:26:30,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37541 states. [2024-11-24 00:26:34,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37541 to 25802. [2024-11-24 00:26:34,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25802 states, 25800 states have (on average 1.2178682170542636) internal successors, (31421), 25801 states have internal predecessors, (31421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:26:34,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25802 states to 25802 states and 31421 transitions. [2024-11-24 00:26:34,925 INFO L78 Accepts]: Start accepts. Automaton has 25802 states and 31421 transitions. Word has length 146 [2024-11-24 00:26:34,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:26:34,925 INFO L471 AbstractCegarLoop]: Abstraction has 25802 states and 31421 transitions. [2024-11-24 00:26:34,925 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 8.909090909090908) internal successors, (392), 43 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:26:34,926 INFO L276 IsEmpty]: Start isEmpty. Operand 25802 states and 31421 transitions. [2024-11-24 00:26:34,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-11-24 00:26:34,928 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:26:34,929 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:26:34,939 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-24 00:26:35,129 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-11-24 00:26:35,130 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:26:35,130 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:26:35,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1444097760, now seen corresponding path program 1 times [2024-11-24 00:26:35,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:26:35,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666890613] [2024-11-24 00:26:35,130 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:26:35,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:26:35,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:26:36,606 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 53 proven. 195 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:26:36,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:26:36,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666890613] [2024-11-24 00:26:36,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666890613] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:26:36,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [47389451] [2024-11-24 00:26:36,606 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:26:36,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:26:36,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:26:36,608 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:26:36,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-24 00:26:36,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:26:36,808 INFO L256 TraceCheckSpWp]: Trace formula consists of 557 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-11-24 00:26:36,811 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:26:40,184 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 57 proven. 191 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:26:40,184 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:26:45,912 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 53 proven. 195 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:26:45,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [47389451] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:26:45,912 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:26:45,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 23, 22] total 67 [2024-11-24 00:26:45,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860834757] [2024-11-24 00:26:45,912 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:26:45,913 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2024-11-24 00:26:45,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:26:45,913 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2024-11-24 00:26:45,914 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=357, Invalid=4065, Unknown=0, NotChecked=0, Total=4422 [2024-11-24 00:26:45,914 INFO L87 Difference]: Start difference. First operand 25802 states and 31421 transitions. Second operand has 67 states, 67 states have (on average 5.776119402985074) internal successors, (387), 67 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:27:17,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:27:17,563 INFO L93 Difference]: Finished difference Result 36888 states and 44485 transitions. [2024-11-24 00:27:17,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2024-11-24 00:27:17,564 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 5.776119402985074) internal successors, (387), 67 states have internal predecessors, (387), 0 states have call successors, (0), 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 147 [2024-11-24 00:27:17,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:27:17,582 INFO L225 Difference]: With dead ends: 36888 [2024-11-24 00:27:17,582 INFO L226 Difference]: Without dead ends: 20428 [2024-11-24 00:27:17,591 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 453 GetRequests, 253 SyntacticMatches, 2 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11983 ImplicationChecksByTransitivity, 28.7s TimeCoverageRelationStatistics Valid=7429, Invalid=32371, Unknown=0, NotChecked=0, Total=39800 [2024-11-24 00:27:17,592 INFO L435 NwaCegarLoop]: 1598 mSDtfsCounter, 44826 mSDsluCounter, 27012 mSDsCounter, 0 mSdLazyCounter, 3596 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44826 SdHoareTripleChecker+Valid, 28610 SdHoareTripleChecker+Invalid, 3744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 3596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-11-24 00:27:17,592 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [44826 Valid, 28610 Invalid, 3744 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [148 Valid, 3596 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-11-24 00:27:17,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20428 states. [2024-11-24 00:27:19,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20428 to 18782. [2024-11-24 00:27:19,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18782 states, 18780 states have (on average 1.233493077742279) internal successors, (23165), 18781 states have internal predecessors, (23165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:27:19,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18782 states to 18782 states and 23165 transitions. [2024-11-24 00:27:19,875 INFO L78 Accepts]: Start accepts. Automaton has 18782 states and 23165 transitions. Word has length 147 [2024-11-24 00:27:19,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:27:19,875 INFO L471 AbstractCegarLoop]: Abstraction has 18782 states and 23165 transitions. [2024-11-24 00:27:19,875 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 5.776119402985074) internal successors, (387), 67 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:27:19,875 INFO L276 IsEmpty]: Start isEmpty. Operand 18782 states and 23165 transitions. [2024-11-24 00:27:19,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-11-24 00:27:19,877 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:27:19,877 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:27:19,887 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-24 00:27:20,078 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-11-24 00:27:20,078 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:27:20,078 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:27:20,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1800837796, now seen corresponding path program 1 times [2024-11-24 00:27:20,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:27:20,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610930304] [2024-11-24 00:27:20,079 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:27:20,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:27:20,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:27:23,441 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 27 proven. 214 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:27:23,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:27:23,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610930304] [2024-11-24 00:27:23,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610930304] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:27:23,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [173015550] [2024-11-24 00:27:23,441 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:27:23,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:27:23,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:27:23,443 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:27:23,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-24 00:27:23,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:27:23,629 INFO L256 TraceCheckSpWp]: Trace formula consists of 557 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-11-24 00:27:23,631 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:27:28,037 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 73 proven. 168 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:27:28,037 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:27:36,350 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 27 proven. 214 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:27:36,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [173015550] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:27:36,351 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:27:36,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 28, 27] total 85 [2024-11-24 00:27:36,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102516150] [2024-11-24 00:27:36,351 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:27:36,351 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 85 states [2024-11-24 00:27:36,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:27:36,352 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2024-11-24 00:27:36,352 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=497, Invalid=6643, Unknown=0, NotChecked=0, Total=7140 [2024-11-24 00:27:36,353 INFO L87 Difference]: Start difference. First operand 18782 states and 23165 transitions. Second operand has 85 states, 85 states have (on average 4.952941176470588) internal successors, (421), 85 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:28:40,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:28:40,519 INFO L93 Difference]: Finished difference Result 21390 states and 26218 transitions. [2024-11-24 00:28:40,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2024-11-24 00:28:40,520 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 85 states have (on average 4.952941176470588) internal successors, (421), 85 states have internal predecessors, (421), 0 states have call successors, (0), 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 147 [2024-11-24 00:28:40,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:28:40,535 INFO L225 Difference]: With dead ends: 21390 [2024-11-24 00:28:40,535 INFO L226 Difference]: Without dead ends: 19740 [2024-11-24 00:28:40,540 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 461 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 215 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14063 ImplicationChecksByTransitivity, 61.2s TimeCoverageRelationStatistics Valid=7771, Invalid=39101, Unknown=0, NotChecked=0, Total=46872 [2024-11-24 00:28:40,540 INFO L435 NwaCegarLoop]: 1606 mSDtfsCounter, 50918 mSDsluCounter, 44357 mSDsCounter, 0 mSdLazyCounter, 5248 mSolverCounterSat, 336 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50918 SdHoareTripleChecker+Valid, 45963 SdHoareTripleChecker+Invalid, 5584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 336 IncrementalHoareTripleChecker+Valid, 5248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2024-11-24 00:28:40,541 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [50918 Valid, 45963 Invalid, 5584 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [336 Valid, 5248 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2024-11-24 00:28:40,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19740 states. [2024-11-24 00:28:43,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19740 to 19180. [2024-11-24 00:28:43,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19180 states, 19178 states have (on average 1.2327145687767234) internal successors, (23641), 19179 states have internal predecessors, (23641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:28:43,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19180 states to 19180 states and 23641 transitions. [2024-11-24 00:28:43,131 INFO L78 Accepts]: Start accepts. Automaton has 19180 states and 23641 transitions. Word has length 147 [2024-11-24 00:28:43,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:28:43,131 INFO L471 AbstractCegarLoop]: Abstraction has 19180 states and 23641 transitions. [2024-11-24 00:28:43,132 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 85 states, 85 states have (on average 4.952941176470588) internal successors, (421), 85 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:28:43,132 INFO L276 IsEmpty]: Start isEmpty. Operand 19180 states and 23641 transitions. [2024-11-24 00:28:43,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-11-24 00:28:43,134 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:28:43,134 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:28:43,143 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-24 00:28:43,334 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-11-24 00:28:43,335 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:28:43,335 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:28:43,335 INFO L85 PathProgramCache]: Analyzing trace with hash 355894557, now seen corresponding path program 1 times [2024-11-24 00:28:43,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:28:43,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314741955] [2024-11-24 00:28:43,335 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:28:43,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:28:43,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:28:44,692 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 37 proven. 212 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:28:44,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:28:44,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314741955] [2024-11-24 00:28:44,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314741955] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:28:44,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [250080734] [2024-11-24 00:28:44,693 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:28:44,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:28:44,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:28:44,694 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:28:44,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-24 00:28:44,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:28:44,897 INFO L256 TraceCheckSpWp]: Trace formula consists of 556 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-24 00:28:44,901 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:28:47,435 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 37 proven. 212 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:28:47,435 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:28:51,239 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 37 proven. 212 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:28:51,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [250080734] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:28:51,239 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:28:51,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 20, 18] total 60 [2024-11-24 00:28:51,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767171639] [2024-11-24 00:28:51,239 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:28:51,240 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-11-24 00:28:51,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:28:51,241 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-11-24 00:28:51,241 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=3287, Unknown=0, NotChecked=0, Total=3540 [2024-11-24 00:28:51,241 INFO L87 Difference]: Start difference. First operand 19180 states and 23641 transitions. Second operand has 60 states, 60 states have (on average 6.616666666666666) internal successors, (397), 60 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:29:11,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:29:11,152 INFO L93 Difference]: Finished difference Result 19421 states and 23891 transitions. [2024-11-24 00:29:11,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2024-11-24 00:29:11,153 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 6.616666666666666) internal successors, (397), 60 states have internal predecessors, (397), 0 states have call successors, (0), 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 148 [2024-11-24 00:29:11,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:29:11,163 INFO L225 Difference]: With dead ends: 19421 [2024-11-24 00:29:11,163 INFO L226 Difference]: Without dead ends: 8449 [2024-11-24 00:29:11,171 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 263 SyntacticMatches, 1 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8491 ImplicationChecksByTransitivity, 19.2s TimeCoverageRelationStatistics Valid=5908, Invalid=25954, Unknown=0, NotChecked=0, Total=31862 [2024-11-24 00:29:11,171 INFO L435 NwaCegarLoop]: 1580 mSDtfsCounter, 42249 mSDsluCounter, 25027 mSDsCounter, 0 mSdLazyCounter, 3080 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42249 SdHoareTripleChecker+Valid, 26607 SdHoareTripleChecker+Invalid, 3187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 3080 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-24 00:29:11,171 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [42249 Valid, 26607 Invalid, 3187 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [107 Valid, 3080 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-24 00:29:11,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8449 states. [2024-11-24 00:29:11,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8449 to 7826. [2024-11-24 00:29:11,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7826 states, 7824 states have (on average 1.3044478527607362) internal successors, (10206), 7825 states have internal predecessors, (10206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:29:11,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7826 states to 7826 states and 10206 transitions. [2024-11-24 00:29:11,945 INFO L78 Accepts]: Start accepts. Automaton has 7826 states and 10206 transitions. Word has length 148 [2024-11-24 00:29:11,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:29:11,946 INFO L471 AbstractCegarLoop]: Abstraction has 7826 states and 10206 transitions. [2024-11-24 00:29:11,946 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 6.616666666666666) internal successors, (397), 60 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:29:11,946 INFO L276 IsEmpty]: Start isEmpty. Operand 7826 states and 10206 transitions. [2024-11-24 00:29:11,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-11-24 00:29:11,947 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:29:11,947 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:29:11,955 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-24 00:29:12,147 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-11-24 00:29:12,148 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:29:12,148 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:29:12,148 INFO L85 PathProgramCache]: Analyzing trace with hash -970975155, now seen corresponding path program 1 times [2024-11-24 00:29:12,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:29:12,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221433324] [2024-11-24 00:29:12,148 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:29:12,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:29:12,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:29:12,323 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 20 proven. 199 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-24 00:29:12,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:29:12,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221433324] [2024-11-24 00:29:12,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221433324] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:29:12,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [951410092] [2024-11-24 00:29:12,323 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:29:12,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:29:12,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:29:12,325 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:29:12,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-24 00:29:12,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:29:12,521 INFO L256 TraceCheckSpWp]: Trace formula consists of 557 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-24 00:29:12,523 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:29:12,705 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 20 proven. 199 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-24 00:29:12,705 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:29:13,285 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 92 proven. 134 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-24 00:29:13,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [951410092] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:29:13,285 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:29:13,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7] total 12 [2024-11-24 00:29:13,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680714939] [2024-11-24 00:29:13,285 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:29:13,286 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-24 00:29:13,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:29:13,286 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-24 00:29:13,287 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-24 00:29:13,287 INFO L87 Difference]: Start difference. First operand 7826 states and 10206 transitions. Second operand has 12 states, 12 states have (on average 22.833333333333332) internal successors, (274), 12 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:29:14,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:29:14,166 INFO L93 Difference]: Finished difference Result 12294 states and 15579 transitions. [2024-11-24 00:29:14,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-24 00:29:14,166 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 22.833333333333332) internal successors, (274), 12 states have internal predecessors, (274), 0 states have call successors, (0), 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 148 [2024-11-24 00:29:14,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:29:14,175 INFO L225 Difference]: With dead ends: 12294 [2024-11-24 00:29:14,175 INFO L226 Difference]: Without dead ends: 10211 [2024-11-24 00:29:14,178 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 290 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2024-11-24 00:29:14,178 INFO L435 NwaCegarLoop]: 1576 mSDtfsCounter, 1674 mSDsluCounter, 6374 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1674 SdHoareTripleChecker+Valid, 7950 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:29:14,178 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1674 Valid, 7950 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:29:14,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10211 states. [2024-11-24 00:29:14,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10211 to 10054. [2024-11-24 00:29:14,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10054 states, 10052 states have (on average 1.2519896538002389) internal successors, (12585), 10053 states have internal predecessors, (12585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:29:14,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10054 states to 10054 states and 12585 transitions. [2024-11-24 00:29:14,963 INFO L78 Accepts]: Start accepts. Automaton has 10054 states and 12585 transitions. Word has length 148 [2024-11-24 00:29:14,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:29:14,963 INFO L471 AbstractCegarLoop]: Abstraction has 10054 states and 12585 transitions. [2024-11-24 00:29:14,963 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 22.833333333333332) internal successors, (274), 12 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:29:14,963 INFO L276 IsEmpty]: Start isEmpty. Operand 10054 states and 12585 transitions. [2024-11-24 00:29:14,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2024-11-24 00:29:14,964 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:29:14,964 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:29:14,971 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-11-24 00:29:15,165 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-11-24 00:29:15,165 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:29:15,165 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:29:15,165 INFO L85 PathProgramCache]: Analyzing trace with hash -2046949756, now seen corresponding path program 1 times [2024-11-24 00:29:15,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:29:15,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330752772] [2024-11-24 00:29:15,166 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:29:15,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:29:15,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:29:15,289 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2024-11-24 00:29:15,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:29:15,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330752772] [2024-11-24 00:29:15,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330752772] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:29:15,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:29:15,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 00:29:15,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335579121] [2024-11-24 00:29:15,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:29:15,290 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:29:15,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:29:15,290 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:29:15,290 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:29:15,291 INFO L87 Difference]: Start difference. First operand 10054 states and 12585 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:29:16,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:29:16,066 INFO L93 Difference]: Finished difference Result 11011 states and 13642 transitions. [2024-11-24 00:29:16,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:29:16,067 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 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 149 [2024-11-24 00:29:16,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:29:16,075 INFO L225 Difference]: With dead ends: 11011 [2024-11-24 00:29:16,075 INFO L226 Difference]: Without dead ends: 9573 [2024-11-24 00:29:16,078 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 [2024-11-24 00:29:16,078 INFO L435 NwaCegarLoop]: 1537 mSDtfsCounter, 3018 mSDsluCounter, 1576 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3018 SdHoareTripleChecker+Valid, 3113 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:29:16,079 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3018 Valid, 3113 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:29:16,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9573 states. [2024-11-24 00:29:16,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9573 to 9339. [2024-11-24 00:29:16,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9339 states, 9337 states have (on average 1.2592909928242477) internal successors, (11758), 9338 states have internal predecessors, (11758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:29:16,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9339 states to 9339 states and 11758 transitions. [2024-11-24 00:29:16,820 INFO L78 Accepts]: Start accepts. Automaton has 9339 states and 11758 transitions. Word has length 149 [2024-11-24 00:29:16,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:29:16,820 INFO L471 AbstractCegarLoop]: Abstraction has 9339 states and 11758 transitions. [2024-11-24 00:29:16,820 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:29:16,820 INFO L276 IsEmpty]: Start isEmpty. Operand 9339 states and 11758 transitions. [2024-11-24 00:29:16,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2024-11-24 00:29:16,821 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:29:16,821 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:29:16,822 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-11-24 00:29:16,822 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:29:16,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:29:16,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1345885178, now seen corresponding path program 1 times [2024-11-24 00:29:16,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:29:16,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189514802] [2024-11-24 00:29:16,822 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:29:16,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:29:16,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:29:18,118 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 37 proven. 214 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:29:18,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:29:18,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189514802] [2024-11-24 00:29:18,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189514802] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:29:18,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [957702488] [2024-11-24 00:29:18,118 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:29:18,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:29:18,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:29:18,120 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:29:18,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-24 00:29:18,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:29:18,332 INFO L256 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-24 00:29:18,334 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:29:20,326 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 37 proven. 214 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:29:20,326 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:29:29,097 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 37 proven. 214 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:29:29,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [957702488] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:29:29,097 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:29:29,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 22, 22] total 64 [2024-11-24 00:29:29,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617272244] [2024-11-24 00:29:29,098 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:29:29,098 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-11-24 00:29:29,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:29:29,099 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-11-24 00:29:29,099 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=419, Invalid=3613, Unknown=0, NotChecked=0, Total=4032 [2024-11-24 00:29:29,099 INFO L87 Difference]: Start difference. First operand 9339 states and 11758 transitions. Second operand has 64 states, 64 states have (on average 6.640625) internal successors, (425), 64 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:29:42,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:29:42,123 INFO L93 Difference]: Finished difference Result 10660 states and 13199 transitions. [2024-11-24 00:29:42,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2024-11-24 00:29:42,123 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 6.640625) internal successors, (425), 64 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 149 [2024-11-24 00:29:42,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:29:42,131 INFO L225 Difference]: With dead ends: 10660 [2024-11-24 00:29:42,131 INFO L226 Difference]: Without dead ends: 10310 [2024-11-24 00:29:42,133 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 257 SyntacticMatches, 2 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5367 ImplicationChecksByTransitivity, 13.1s TimeCoverageRelationStatistics Valid=4208, Invalid=16384, Unknown=0, NotChecked=0, Total=20592 [2024-11-24 00:29:42,134 INFO L435 NwaCegarLoop]: 1571 mSDtfsCounter, 33861 mSDsluCounter, 22667 mSDsCounter, 0 mSdLazyCounter, 2185 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33861 SdHoareTripleChecker+Valid, 24238 SdHoareTripleChecker+Invalid, 2267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 2185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-24 00:29:42,134 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [33861 Valid, 24238 Invalid, 2267 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [82 Valid, 2185 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-24 00:29:42,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10310 states. [2024-11-24 00:29:42,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10310 to 9186. [2024-11-24 00:29:42,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9186 states, 9184 states have (on average 1.2624128919860627) internal successors, (11594), 9185 states have internal predecessors, (11594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:29:42,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9186 states to 9186 states and 11594 transitions. [2024-11-24 00:29:42,880 INFO L78 Accepts]: Start accepts. Automaton has 9186 states and 11594 transitions. Word has length 149 [2024-11-24 00:29:42,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:29:42,880 INFO L471 AbstractCegarLoop]: Abstraction has 9186 states and 11594 transitions. [2024-11-24 00:29:42,880 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 6.640625) internal successors, (425), 64 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:29:42,880 INFO L276 IsEmpty]: Start isEmpty. Operand 9186 states and 11594 transitions. [2024-11-24 00:29:42,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2024-11-24 00:29:42,881 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:29:42,881 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:29:42,890 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-11-24 00:29:43,082 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2024-11-24 00:29:43,082 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:29:43,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:29:43,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1650018584, now seen corresponding path program 1 times [2024-11-24 00:29:43,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:29:43,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967967079] [2024-11-24 00:29:43,083 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:29:43,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:29:43,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:29:43,192 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2024-11-24 00:29:43,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:29:43,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967967079] [2024-11-24 00:29:43,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967967079] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:29:43,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:29:43,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 00:29:43,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349704969] [2024-11-24 00:29:43,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:29:43,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:29:43,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:29:43,193 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:29:43,193 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:29:43,194 INFO L87 Difference]: Start difference. First operand 9186 states and 11594 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:29:43,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:29:43,860 INFO L93 Difference]: Finished difference Result 10045 states and 12569 transitions. [2024-11-24 00:29:43,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:29:43,861 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 149 [2024-11-24 00:29:43,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:29:43,869 INFO L225 Difference]: With dead ends: 10045 [2024-11-24 00:29:43,869 INFO L226 Difference]: Without dead ends: 9134 [2024-11-24 00:29:43,871 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 [2024-11-24 00:29:43,872 INFO L435 NwaCegarLoop]: 1534 mSDtfsCounter, 3005 mSDsluCounter, 1598 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3005 SdHoareTripleChecker+Valid, 3132 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:29:43,872 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3005 Valid, 3132 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:29:43,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9134 states. [2024-11-24 00:29:44,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9134 to 9132. [2024-11-24 00:29:44,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9132 states, 9130 states have (on average 1.2600219058050384) internal successors, (11504), 9131 states have internal predecessors, (11504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:29:44,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9132 states to 9132 states and 11504 transitions. [2024-11-24 00:29:44,515 INFO L78 Accepts]: Start accepts. Automaton has 9132 states and 11504 transitions. Word has length 149 [2024-11-24 00:29:44,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:29:44,515 INFO L471 AbstractCegarLoop]: Abstraction has 9132 states and 11504 transitions. [2024-11-24 00:29:44,516 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:29:44,516 INFO L276 IsEmpty]: Start isEmpty. Operand 9132 states and 11504 transitions. [2024-11-24 00:29:44,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2024-11-24 00:29:44,517 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:29:44,517 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:29:44,517 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-11-24 00:29:44,518 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:29:44,518 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:29:44,518 INFO L85 PathProgramCache]: Analyzing trace with hash 1623880358, now seen corresponding path program 1 times [2024-11-24 00:29:44,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:29:44,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223501806] [2024-11-24 00:29:44,518 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:29:44,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:29:44,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:29:46,017 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 53 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:29:46,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:29:46,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223501806] [2024-11-24 00:29:46,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223501806] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:29:46,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1712054827] [2024-11-24 00:29:46,018 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:29:46,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:29:46,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:29:46,020 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:29:46,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b08d1b8-e2b0-49b8-9593-218b05f8c9fb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-24 00:29:46,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:29:46,282 INFO L256 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 84 conjuncts are in the unsatisfiable core [2024-11-24 00:29:46,284 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:29:50,860 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 53 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:29:50,860 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:30:15,770 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 49 proven. 202 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:30:15,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1712054827] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:30:15,770 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:30:15,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 35, 38] total 96 [2024-11-24 00:30:15,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877414349] [2024-11-24 00:30:15,771 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:30:15,771 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2024-11-24 00:30:15,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:30:15,772 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2024-11-24 00:30:15,772 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1034, Invalid=8086, Unknown=0, NotChecked=0, Total=9120 [2024-11-24 00:30:15,772 INFO L87 Difference]: Start difference. First operand 9132 states and 11504 transitions. Second operand has 96 states, 96 states have (on average 4.375) internal successors, (420), 96 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)